Journal articles: 'Ostia'

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Bolger, William E., and Winston C. Vaughan. "Catheter-Based Dilation of the Sinus Ostia: Initial Safety and Feasibility Analysis in a Cadaver Model." American Journal of Rhinology 20, no. 3 (May 2006): 290–94. http://dx.doi.org/10.2500/ajr.2006.20.2868.

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Background Over the past 20 years, many patients have benefited from endoscopic sinus surgery and its ability to relieve sinus obstruction. However, problems still occur with surgery, thereby leaving room for innovation. Recently, catheter-based technology has provided new options for treating cardiac, vascular, and urologic diseases. We speculated that catheter technology also might offer new treatment options for sinusitis patients. The purpose of this investigation was to explore the feasibility and safety of catheter-based technology to relieve sinus ostial obstruction. Methods Anatomic models and human cadaver specimens were used initially to design and iterate catheters to open sinus ostial drainage pathways. Thereafter, the safety of balloon-catheter dilation was evaluated in six human cadaver heads. CT scan obtained before and after catheter ostial dilation was analyzed for evidence of catheter-induced trauma. Dilated ostia also were examined by endoscopy and gross anatomic dissection for unwanted catheter-induced trauma. Results Catheters successfully dilated 31 of 31 ostia, including 9 maxillary, 11 sphenoid, and 11 frontal ostia/recesses. CT scan, endoscopy, and gross anatomic dissection revealed that such dilation did not cause trauma to surrounding structures such as the orbit or skull base. Mucosal trauma imparted by catheter dilation appeared to be less than that normally seen with standard endoscopic instruments. Conclusion This initial study suggests that catheter technology can be used to dilate sinus ostia safely. Mucosal preservation and ease of use make catheters an attractive minimally invasive treatment strategy. Additional testing in patients is indicated to gain additional safety information and to explore the usefulness of catheter-based technology.

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Ravichandran, Pasala S., H. Storm Floten, Anthony P. Furnary, Hugh L. Gately, Hagop Hovaguimian, Jeffrey Swanson, and Albert Starr. "Coronary Ostial Anastomosis in Aortic Root Replacement." Asian Cardiovascular and Thoracic Annals 4, no. 1 (March 1996): 40–42. http://dx.doi.org/10.1177/021849239600400111.

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Zhao, Daqiu, Xiayan Zhang, Ziwen Fang, Yanqing Wu, and Jun Tao. "Physiological and Transcriptomic Analysis of Tree Peony (Paeonia section Moutan DC.) in Response to Drought Stress." Forests 10, no. 2 (February 7, 2019): 135. http://dx.doi.org/10.3390/f10020135.

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Tree peony (Paeonia section Moutan DC.) is a famous ornamental plant, and P. ostii has been used for seed oil production in China because it is rich in α-linolenic acid. P. ostii has some resistance to drought, but lack of water can severely hinder its growth and development in arid areas. In order to clarify drought stress induced physiological and molecular changes of P. ostia, its physiological and transcriptomic analyses were performed under drought stress, and we found that P. ostii leaves drooped significantly 12 days after treatment and observed a significant increase in all detected physiological indices in response to drought treatment except leaf water content, chlorophyll, and carotenoid content. Meanwhile, the activity of three antioxidant enzymes basically increased under drought treatment. Moreover, drought treatment significantly reduced photosynthetic and chlorophyll fluorescence parameters except non-photochemical quenching (qN), and maintained more intact mesophyll cell structures. Additionally, many differentially expressed genes (DEGs) were found by transcriptome sequencing, which play an important role in P. ostia drought tolerance by controlling a variety of biological processes, including the reactive oxygen species (ROS) system, chlorophyll degradation and photosynthetic competency, fatty acid metabolism, proline metabolism, biosynthesis of secondary metabolism, and plant hormone metabolism. These results provide a better understanding of P. ostii responses to drought stress.

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Bolger, William E., Christopher L. Brown, Christopher A. Church, Andrew N. Goldberg, Boris Karanfilov, Frederick A. Kuhn, Howard L. Levine, Michael J. Sillers, Winston C. Vaughan, and Raymond L. Weiss. "Safety and Outcomes of Balloon Catheter Sinusotomy: A Multicenter 24-Week Analysis in 115 Patients." Otolaryngology–Head and Neck Surgery 137, no. 1 (July 2007): 10–20. http://dx.doi.org/10.1016/j.otohns.2007.02.006.

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OBJECTIVE: The aim of this study was to further evaluate the safety and effectiveness of balloon catheter devices to dilate obstructed sinus ostia/perform sinusotomy. METHODS: Through a prospective, multicenter evaluation, safety was assessed by rate of adverse events, patency was determined by endoscopic examination, and sinus symptoms were determined by the Sino-Nasal Outcome Test (SNOT 20). RESULTS: At the conclusion of the 24-week analysis, endoscopy determined that the sinusotomy was patent in 80.5% (247 of 307) sinuses and nonpatent in 1.6% (5 of 307), and could not determine ostial patency status in 17.9% (55 of 307). Of the ostia visualized on endoscopy, 98% were patent (247 of 252), while 2% (5 of 252) were considered nonpatent. SNOT 20 scores showed consistent symptomatic improvement over baseline. Revision treatment was required in 3 sinuses (3 of 307 sinuses, 0.98%) in 3 patients (3 of 109 patients, 2.75%). CONCLUSION: Balloon catheter technology appears safe and effective in relieving ostial obstruction. Patients were pleased and indicated that they experienced symptomatic improvement.

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Chowdhury, Ujjwal, Keerthi Rao, Rajiv Narang, Poonam Kapoor, Minati Choudhury, Arindam Choudhury, and Pradeep Ramakrishnan. "An Alternative Technique of Coronary Button Implantation in Patients Undergoing Modified Bentall's Procedure." Journal of Cardiac Critical Care TSS 01, no. 01 (August 2017): 051–54. http://dx.doi.org/10.1055/s-0037-1606350.

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AbstractWe present two modifications of the “button technique” and proximal aortic conduit suturing for patients undergoing modified Bentall's procedure. We interposed a glutaraldehyde-treated autologous pericardial strip between the graft and native coronary ostia during coronary ostial implantation and placed interrupted aortic annular pledgeted mattress sutures to ensure perfect hemostasis at the suture lines.

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Wein, Courtney E., Paul M. Weinberg, and Kristine J. Guleserian. "Congenital absence of coronary ostia in a single/common coronary system." Cardiology in the Young 29, no. 7 (June 21, 2019): 993–95. http://dx.doi.org/10.1017/s1047951119001100.

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AbstractCoronary ostial atresia seen with pulmonary atresia and coronary-cameral fistulae or, more rarely, in isolation manifested as left main coronary artery atresia, is well described. We describe the clinical course and post-mortem findings in a neonate who suffered a fatal cardiac arrest and was found to have congenital absence of both coronary ostia in a single/common coronary system.

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HERES, T. L. "Ostia Antica." BABESCH - Bulletin Antieke Beschaving 61 (January 1, 1986): 138–48. http://dx.doi.org/10.2143/bab.61.0.2012600.

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Caldelli, Maria Letizia. "Ostia dispersa." Mélanges de l'École française de Rome. Antiquité, no. 130-2 (November 5, 2018): 341–50. http://dx.doi.org/10.4000/mefra.5993.

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Patil, Manjula, and Manjunath KY. "Ostium maxillare accessorium - a morphologic study." National Journal of Clinical Anatomy 01, no. 04 (October 2012): 171–75. http://dx.doi.org/10.1055/s-0039-3401684.

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Abstract Background and aims : The "Osteomeatal complex" of the middle meatus contains the primary maxillary opening as well as in few cases the 'accessory maxillary ostia'. An ostium leading to maxillary sinus apart from the primary maxillary opening is defined as accessory maxillary ostia. Location of accessory maxillary ostia is more advantageous than primary maxillary opening. Accessory maxillary ostia can be utilized to approach the maxillary sinus in cases of difficulty in approaching the primary maxillary opening. The present study was undertaken to study the morphological variations of accessory maxillary ostia in human cadavers. Material and methods : Forty two sagittal sections of the human cadavers were studied for the incidence, location, number, shape, size and laterality of accessory maxillary ostia. Results : Accessory maxillary ostia were found in 26% of the specimens. Of these 55.54% were found in anterior fontanelle and 45.45% in the posterior fontanelle. Shape varied from oval to round and dimensions 1.33 to 5.6mm antero-posteriorly and 1.07 to 2.55mm vertically. Accessory maxillary ostia were frequently observed unilaterally. Conclusion : Accessory maxillary ostia when present can be utilized during clinical procedures to get access to maxillary sinus in cases of difficulty in approach due to the variation in configuration of uncinate process or bulla ethmoidalis. Morphology of accessory maxillary ostia can thus be a valuable source of information to the endoscopic surgeons operating on the maxillary sinus.

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Lee, Chang Sub, Ji Hoon Phi, Seung-Ki Kim, Byung-Kyu Cho, and Kyu-Chang Wang. "Spinal congenital dermal sinus with dual ostia." Journal of Neurosurgery: Pediatrics 3, no. 5 (May 2009): 407–11. http://dx.doi.org/10.3171/2009.1.peds08153.

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Object Congenital dermal sinus (CDS) usually develops in the midline of the body as a single tract. To date, only a few patients with multiple CDS tracts and ostia have been reported. The authors analyzed the clinical features of patients with spinal CDS and multiple ostia and proposed a novel hypothesis for the pathogenesis of the atypical CDS. Methods Five patients with spinal CDS and multiple ostia were included. The clinical, radiological, and operative features of these patients were reviewed retrospectively. Results Three patients demonstrated bilateral paramedian ostia at the same or a very similar spinal level. One patient showed a paramedian and a midline ostium. One patient had 2 unilateral paramedian ostia at different spinal levels. The layers of the internal ending of CDS tracts were diverse. Complete removal of the tracts was possible in all patients. Two patients had dermoid tumors. All patients had an associated anomaly, such as a lumbosacral lipoma or the Currarino triad. The authors propose a “zipping error” hypothesis for the formation of dual ostia located at the spinal level of primary neurulation. An associated anomaly such as a lumbosacral lipoma may contribute to the formation of dual ostia. Conclusions Unilateral or bilateral dual ostia may be present in patients with CDS, especially when an associated anomaly is present. The atypical CDS may develop from aberrant neural tube closure.

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David, Massimiliano, and Alessandro Melega. "Symbols of Identity and Culture of the Monogram in the Late Antique Mithraism." Acta Antiqua Academiae Scientiarum Hungaricae 58, no. 1-4 (December 2018): 133–42. http://dx.doi.org/10.1556/068.2018.58.1-4.8.

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Summary The highest number of mithraea in urban context of the ancient world come from Ostia. Although we do not know the whole city, mithraea have been found in all districts of the town. The spread and fortune of the Mithraic worship are also attested by the plenteous epigraphic and sculptural materials. This research deals with the Mithraism at Ostia, focusing on the particular case of monograms, just mentioned by Giovanni Becatti in his seminal work about mithraea at Ostia, dating back to more than sixty years ago. After the recent discovery of the Mithraeum of colored marbles by the archaeologists of the Ostia Marina Project (University of Bologna), it seems necessary to examine and contextualize the phenomenology of Mithraic monograms at Ostia, as is done in relation to similar processes which involve the Christian world.

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Walker. "Latin via Ostia." Classical Journal 105, no. 1 (2009): 53. http://dx.doi.org/10.5184/00098353.105.1.53.

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Walker, Jeremy M. "Latin via Ostia." Classical Journal 105, no. 1 (2009): 53–55. http://dx.doi.org/10.1353/tcj.2009.0039.

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Laurence, Ray. "Roman Ostia Revisited." Classical Review 49, no. 1 (April 1999): 220–21. http://dx.doi.org/10.1093/cr/49.1.220.

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Laurence, Ray. "RELIGION AT OSTIA." Classical Review 48, no. 2 (October 1998): 444–45. http://dx.doi.org/10.1017/s0009840x98680021.

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Murugan, Magi, Sri Ambika, Virendar Kumar Nim, and Shaik Hussain Saheb. "Coronary Ostia: A Cadaveric Study." Indian Journal of Anatomy 6, no. 4 (2017): 482–86. http://dx.doi.org/10.21088/ija.2320.0022.6417.13.

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Patel, Neil S., Amy C. Dearking, Erin K. O’Brien, and John F. Pallanch. "Virtual Mapping of the Frontal Recess: Guiding Safe and Efficient Frontal Sinus Surgery." Otolaryngology–Head and Neck Surgery 156, no. 5 (April 18, 2017): 946–51. http://dx.doi.org/10.1177/0194599817699562.

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Objective To define relationships between the frontal sinus opening, ostia of other frontal recess cells, and endoscopic landmarks and to develop a clinically useful framework to guide frontal sinus surgery. Study Design Retrospective review. Setting Tertiary care academic referral center. Methods Adult patients with computed tomography (CT) without sinonasal pathology were included. Virtual endoscopy (using OsiriX) and corresponding CT reconstructions were used to identify all visible ostia in the frontal recess and characterize their positions in spaces between the uncinate/agger nasi (U), bulla ethmoidalis (EB), and middle turbinate (MT). Results Two hundred sides in 100 patients (median age 51 years, 62% female) were analyzed. The “center” of each map was defined as the intersection of spaces between U, EB, and MT. The frontal sinus opening was in the “center” in 53% of frontal recesses, lateral to this position in 29%, and anterior in 11%. When the frontal sinus opening was at the “center,” anterior ostia drained frontal Kuhn T cells in 51% and intersinus septal cells in 23%. The skull base attachment of the apical strut of the uncinate process demarcated medial and lateral within the space between U and EB, with the opening to the frontal sinus medial in 68% and lateral in 31%. Left-right asymmetry in frontal sinus openings was noted in 46% of patients. Conclusion Combining preoperative imaging and knowledge of these anatomic relationships may facilitate more efficient frontal outflow tract identification and instrumentation. This represents the first and largest description of ostial configurations relative to endoscopic structural landmarks. Level of Evidence: 4

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D'Souza, M., B. Ray, A. Saxena, P. Rastogi, A. D'Souza, C. Gupta, B. Muralimanju, P. Shetty, V. Kumar, and N. Kumar. "Variations of origin of coronary artery and their importance." Journal of Morphological Sciences 32, no. 01 (January 2015): 001–7. http://dx.doi.org/10.4322/jms.051214.

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Abstract Introduction: Incidence of anomalous coronary arteries is rare and has been recognized as the causative factor for myocardial ischemia and sudden death. Knowledge about the variations of coronary arterial origin and its course provide a valuable guide to Cardiothoracic Surgeons and Physicians and be useful for producing devices appropriate for variant anatomical structures. The aim of the study was to investigate the number and position of the coronary ostia, emphasizing their possible clinical implications. Methods: Fifty one formalin fixed adult heart specimens were dissected to conduct a morphometric study on coronary ostia and establish their relation with respective aortic sinuses. In addition, branching pattern of the right coronary artery and its dominance were documented. Results: Variations in number and position of ostia in both sinuses were noted. Of the 96 ostia analyzed in the present study, 64.5% were located below the intercommissural line, 11.4% above it and 18.7% at its level. Mean diameter of right and left ostia was measured as 3.03mm and 2.9mm respectively. Mean distance of right and left ostia from their respective sinuses was found to be 15.14mm and 14.20mm respectively. Conclusion: Knowledge of normal and variant anatomy of coronary circulation is a vital component in diagnoses of congenital and acquired cardiac diseases. This study will provide additional information about variations of coronary artery to clinicians and manufacturers to plan their approach for safer and successful treatment.

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Perazzo, Alvaro, Pedro Rafael Vieira de Oliveira Salerno, Mariana Ferreira Paulino, Vitoria de Ataide Caliari, Isabella Martins Ribeiro, Roberto Lorusso, Ricardo de Carvalho Lima, and Pedro Rafael Salerno. "Surgical Ostioplasty of the Left Main Coronary Artery: An Alternative to Coronary Artery Bypass Grafting in the Treatment of Left Main Stem Isolated Ostial Stenosis—A Case Series." Surgical Techniques Development 11, no. 2 (July 20, 2022): 62–70. http://dx.doi.org/10.3390/std11020006.

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This study aims to demonstrate the use of surgical ostioplasty of the left main coronary artery as an alternative technique to the conventional use of coronary artery bypass grafting for the treatment of left main stem-isolated ostial stenosis. From 2002 to 2021, five patients—three women (60%) and two men (40%)—presented with a history of angina pectoris and were diagnosed with isolated stenosis of the coronary ostia associated with normal distal coronary arteries. Pre-operative cardiac catheterization and echocardiography were performed to aid in the diagnosis. The patients were submitted to surgical ostioplasty with a posterior approach using a saphenous patch. There were no hospital deaths or myocardial infarctions during the post-operative period. The mean cardiopulmonary bypass time was 82 min (range, 70–95 min), and the mean aortic-clamp time was 62 min (range, 55–75 min). The average time of hospitalization was 6.2 days (range, 4–18 days). Patients with isolated stenosis of the coronary ostia associated with normal distal coronary arteries may be submitted to left main coronary artery ostioplasty as an alternative to coronary artery bypass grafting, the traditional surgical technique for this pathology.

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Roberts-Jones, Jonah, Emma Kathleen Fiedler, and Matthew James Martin. "Daily, Global, High-Resolution SST and Sea Ice Reanalysis for 1985–2007 Using the OSTIA System." Journal of Climate 25, no. 18 (April 6, 2012): 6215–32. http://dx.doi.org/10.1175/jcli-d-11-00648.1.

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Abstract A sea surface temperature (SST) and sea ice reanalysis has been produced at the Met Office based on the Operational SST and Sea Ice Analysis (OSTIA) system. The OSTIA reanalysis produces daily, high-resolution, global foundation SST and sea ice concentration fields from 1 January 1985 to 31 December 2007. The SST reanalysis uses reprocessed satellite and in situ observations that are assimilated using a multiscale optimal-interpolation-type scheme similar to that used in the near-real-time OSTIA system. Validation of the SST analysis using assimilated in situ observation-minus-background statistics shows that the accuracy of the analysis increases throughout the reanalysis period; the global root-mean-square difference is approximately 0.50 K by 2007. This approach to validation is supported in the recent period by results from comparisons with independent near-surface Argo data against which a global standard deviation error of 0.55 K was calculated. Assessment of the OSTIA reanalysis at high latitudes demonstrates that the SST and sea ice fields are more consistent with one another in the Southern Hemisphere than in the Northern Hemisphere. Comparison of the sea ice extents to those in a similar reanalysis shows OSTIA to have larger extents in the Northern Hemisphere, and the Southern Hemisphere extents are similar. The OSTIA reanalysis SSTs are shown to be regionally comparable with similar reanalyses, with the largest differences occurring at high latitudes in the summer hemisphere. Differences are observed around the ice edge and in regions with high SST gradients. The OSTIA reanalysis provides a valuable high-resolution addition to the satellite period SST data record that makes use of the (Advanced) Along-Track Scanning Radiometer [(A)ATSR] multimission data.

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Aburawi, E. H., A. Berg, H. Arheden, M. Karlsson, P. Jögi, and E. Pesonen. "Abstracts for the British Congenital Cardiac Association Annual Meeting: The Barbican, London, 24–25 November 2005: Poster Presentations: Severe coronary ostial stenosis after arterial switch operation detected by transthoracic Doppler echocardiography." Cardiology in the Young 16, no. 3 (June 2006): 322. http://dx.doi.org/10.1017/s1047951106330235.

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Background: Asymptomatic proximal coronary artery stenosis after arterial switch operation (ASO) is rare, but a potentially life-threatening condition, that is reported to appear in up to 7%. Angiography, although considered the state-of-the-art method of diagnosis, is an invasive method, but has limitations for diagnosing ostial stenosis. We report changes in Doppler flow profile and coronary flow reserve (CFR) in two asymptomatic patients (9- and 10-year old) with left main coronary artery (LMCA) ostial stenosis after ASO. Methods: Coronary flow was assessed by Transthoracic pulsed and colour-flow Doppler echocardiography (TTDE). CFR was measured in one patient using adenosine infusion (140 mcg/kg/min) over 4 minutes. CFR was calculated as the ratio of reactive hyperaemia to basal average peak velocity (APV). Both children were investigated with coronary angiography. They had myocardial Single-photon Emission Computed Tomography (SPECT), and magnetic resonance imaging (MRI) at rest and after reactive hyperaemia with adenosine infusion. Both patients had balloon dilatation and Cypher select (drug eluted) stent. Results: On echocardiogram a flame-like colour-flow diastolic signal was detected at the stenotic coronary ostia. The maximal spectral velocities during baseline conditions over the stenotic ostia were over 1.9 and 2.0 m/s (normal 30 ± 10 cm/s). The post-stenotic CFR was haemodynmically significant with value of 1.3, normal adult range 2.5–4. Coronary angiography showed a significant ostial stenosis 90% in both patients. Myocardial SPECT and MRI at rest/adenosine infusion were consistent with severe myocardial ischemia in the territory of the left coronary artery. Normal coronary angiography and coronary flow studies after stenting. Conclusion: We suggest that coronary artery flow assessment should be an integral part of the TTDE in the follow up of children with ASO. Serious coronary artery stenosis can be detected with TTDE. Assessment of CFR provides information of the physiological significance of the coronary stenosis.

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Roule, Vincent, Idir Rebouh, Adrien Lemaitre, Mathieu Bignon, Pierre Ardouin, Rémi Sabatier, Fabien Labombarda, Katrien Blanchart, and Farzin Beygui. "Evaluation of Left Main Coronary Artery Using Optical Frequency Domain Imaging and Its Pitfalls." Journal of Interventional Cardiology 2020 (June 12, 2020): 1–7. http://dx.doi.org/10.1155/2020/4817239.

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Objectives. We aimed to assess the quality of optical frequency domain imaging (OFDI) of the left main (LM) arterial wall and describe and analyse potential artefacts in this setting. Background. OFDI is increasingly used to assess ambiguous lesions and optimize LM percutaneous coronary intervention. However, its ability to provide artefact-free high-quality images of coronary ostia and large segments such as the LM remains uncertain. Methods. We included 42 consecutive patients who underwent OFDI, including LM imaging. Each OFDI frame was subdivided into four quadrants and analysed. The number of quadrants with artifacts was calculated within the proximal, mid, and distal LM and the first 5 mm of the left anterior descending artery (LAD) and/or left circumflex artery (LCX). Results. The quadrants analysis showed an overall artifact rate of 8.9%, mostly out-of-field (45.1%) or residual blood (44.7%) artefacts. Most artifacts were located in the proximal LM (18.6%) with a stepwise reduction of artifact rates towards distal segments (mid LM 5.8%; distal LM 3.6%, ostial LAD 2.6%, and ostial LCX 0%; p<0.001). While 20 (48.8%) patients had angiographically visible plaques, OFDI showed plaques in 32 patients (76.2%; p=0.007). Conclusion. OFDI can accurately evaluate the LM and detect and assess angiographically unvisualized atherosclerotic plaques providing accurate assessment of >90% of the quadrants of the LM and the ostia of its bifurcation branches. However, artifacts mainly located in the proximal LM and decreasing distally in a stepwise fashion should be considered in the interpretation of OFDI in this setting.

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Bukowiecki, Evelyne, and Corinne Rousse. "Ostia antica : entrepôts d’Ostie et de Portus. Les grandi horrea à Ostie." Mélanges de l’École française de Rome. Antiquité 119, no. 1 (2007): 283–86. http://dx.doi.org/10.3406/mefr.2007.10344.

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Bukowiecki, Evelyne, Nicolas Monteix, and Corinne Rousse. "Ostia antica : entrepôts d’Ostie et de Portus. Les grandi horrea à Ostie." Mélanges de l'École française de Rome. Antiquité 120, no. 1 (2008): 211–16. http://dx.doi.org/10.3406/mefr.2008.10432.

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BOERSMA, Johannes. "Private Latrines in Ostia." BABESCH - Bulletin Antieke Beschaving 71 (December 1, 1996): 151–60. http://dx.doi.org/10.2143/bab.71.0.2002278.

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Noy, David. "THE SYNAGOGURE AT OSTIA." Classical Review 53, no. 2 (October 2003): 428–29. http://dx.doi.org/10.1093/cr/53.2.428.

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Ghosh, Puja, Pragadeeswaran Kumarasekaran, and Gurumani Sriraman. "Incidence of accessory ostia in patients with chronic maxillary sinusitis." International Journal of Otorhinolaryngology and Head and Neck Surgery 4, no. 2 (February 23, 2018): 443. http://dx.doi.org/10.18203/issn.2454-5929.ijohns20180705.

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Background: Chronic maxillary sinusitisis is one of the most frequent diseases presenting in ENT out patient department seeking medical attention. Defects in the fontanelle region of the lateral nasal wall have been described as accessory ostia. The presence of AMO in both pre and post operated cases of chronic maxillary sinusitis can cause recirculation of mucus leading to recurrences. In the present study we will investigate the incidence of accessory ostia in patients with clinical and radiological signs of chronic maxillary sinusitis. Methods: The study included 100 patients visiting the out patient department of Shri Sathya Sai Medical College and Research Institute selected according to inclusion criteria with a clinical diagnosis of chronic rhino sinusitis which was confirmed by high resolution CT scan and those patients were subjected to diagnostic nasal endoscopy under local anesthesia. Results: The study group consisted of total 100 patients among whom 56 were male patients and 44 were female patients. Accessory maxillary ostia were detected in 23% of the cases and in rest of the 77% cases it was absent. Among the 23 cases in 35% cases accessory ostia were found to be bilateral and in 65% cases it was found to be unilateral. Among the cases where accessory ostia were seen, in 39% cases only accessory ostia were found. Where as in 17.39% cases it was associated with concha bullosa, in 65.2% cases there was deviated nasal septum and in 8.7% cases paradoxical middle turbinate were found to be present. Conclusions: To conclude, the present study revealed close association of accessory ostia with chronic maxillary rhino sinusitis. It was also found that majority of the cases accessory ostia were found to be unilateral and were frequently found in the posterior fontanelle region.

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Serrano Ordozgoiti, David. "Los vínculos entre la sal y el dios Hércules en Roma, Ostia y Alba Fucens = The Links between Salt and the God Hercules in Rome, Ostia and Alba Fucens." ARYS. Antigüedad: Religiones y Sociedades, no. 16 (September 12, 2019): 395. http://dx.doi.org/10.20318/arys.2018.4185.

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Resumen: A menudo, el interés científico por la sal ha encontrado provechosos socios en los investigadores de la economía romana, más que en su relación simbólica con los pobladores. Por ello, el estudio se propone analizar la relación existente entre la sal y la religión romana, tomando para ello el ejemplo del culto de Hércules en Roma, Ostia y el centro de Italia. Con ese fin se analizará en un primer momento la figura del dios itálico en su contexto originario, subrayando sus diferencias conceptuales con el dios grecorromano más tardío y su relación con la sal y su culto urbano. En un segundo momento, se revisará el papel que desempeña el dios con la ciudad de Ostia y su casuística, para, en último lugar, estudiar la devoción de la divinidad en el centro de Italia, tremendamente radicada desde tiempos muy remotos en santuarios como el de Alba Fucens.Abstract: The scientific interest in salt has often found useful partners in researchers of the Roman economy, rather than in its symbolic relationship with the settlers. For this reason, the study aims to analyse the relationship between salt and Roman religion, taking the example of the cult of Hercules in Rome, Ostia and central Italy. To this end, the figure of the Italic god in its original context will be analysed first, highlighting its conceptual differences with the later Greco-Roman god and its relationship with salt and its urban cult. In a second moment, the role that the god plays with the city of Ostia and its casuistry will be reviewed, in order to, finally, study the devotion of the divinity in the centre of Italy, tremendously rooted since very remote times in sanctuaries such as that of Alba Fucens.Palabras clave: Sal, religión romana, Hércules, Roma, Ostia, Alba Fucens, Via Salaria.Key words: Salt, Roman Religion, Hercules, Rome, Ostia, Alba Fucens, Via Salaria.

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Cherukupalli, Chandra, Amit J. Dwivedi, Rajeev Dayal, and Khambapatty V. Krishnasastry. "Aortic Debranching for Descending Thoracic Aortic Aneurysm Repair by Stent Grafts." American Surgeon 73, no. 1 (January 2007): 32–36. http://dx.doi.org/10.1177/000313480707300108.

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Endovascular repair of a descending thoracic aortic aneurysm may result in covering the ostia of the left carotid or left subclavian artery for proper proximal landing zones, and the celiac artery or superior mesenteric artery ostia in the abdomen for distal landing zones. To prevent possible complications of occluding the ostia of these vessels, the authors performed an innominate to left common carotid and left subclavian artery bypass as the first procedure in one patient. In the second patient they performed an aortoceliac and aortomesenteric bypass before stent graft placement. The stent graft repair of the descending thoracic aortic aneurysm was performed subsequently in both patients. This aortic debranching provides subsequent proper placement of thoracic stent grafts.

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Pidvalna, U. Ye. "Correlation between aortic root dimensions and biometric indicators in coronary heart disease." Reports of Morphology 28, no. 3 (September 6, 2022): 14–20. http://dx.doi.org/10.31393/morphology-journal-2022-28(3)-02.

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Aortic root requires preliminary preoperative analysis for coronary artery bypass graft (CABG) in coronary heart disease (CHD). The dimensions of the aorta correlate with anthropometric indicators. The purpose of the study: to establish the relationship between sinuses of Valsalva height, coronary artery ostia height and biometric parameters (age, height, weight, body surface area and body mass index) in men with CHD using computed tomography. Research materials and methods include contrast-enhanced computed tomography images of the aorta of men with verified CHD. According to growth parameters, division into 2 groups was made. The sinuses of Valsalva height and right and left coronary artery ostia height were measured. Clinical data were analyzed: age, height, body weight, body surface area (BSA) and body mass index (BMI). Statistical analysis: Student's t-test, Kendall's rank correlation method, Pearson's linear correlation, Fisher's multifactorial regression analysis. Analysis of the results of computed tomography of 30 men with CHD (average age 60.80±10.63 years) showed that the average values of the three sinuses of Valsalva height were approximately at the same level. The results of the Pearson linear correlation evaluation showed the absence of a proven relationship between biometric indicators and morphometric data according to CT in men with CHD (p>0.05). Multifactor regression analysis proved the inverse significant influence of weight and the direct significant influence of BMI and BSA on the dependence of left coronary artery ostia height. The multiple correlation coefficient was R=+0.55, with p=0.023, SEE=2.74. Prediction of the level of left coronary artery ostia height in men with CHD was carried out with confirmation of the constructed model. In the first group of short men (n=11) with CHD (average age 60.11±12.63 years, height 1.677±0.023 m), an inverse correlation between height and left coronary artery ostia height (τb=-0.56, p=0.034). Reliable direct relationships between the left coronary artery ostia height parameter and several anthropometric indicators were established: with weight – a direct strong relationship (τb=+0.72, p=0.007), with BMI – a direct relationship of medium strength (τb=+ 0.67, p=0.008), with BSA – average strength direct connection (τb=+0.58, p=0.023). The relationship between the value of the right coronary artery ostia height and the BSA indicator – the inverse of the average strength correlation (τb=-0.51, p=0.046) was proved. Relationships between morphometric parameters and age were not proven. Thus, in men with CHD, left coronary artery ostia height correlates with weight, BMI, and BSA. In short men with CHD, there is an inverse relationship between left coronary artery height and height; direct relationships with weight, BMI and BSA.

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Fiocca, Luigi, Micol Coccato, Vasile Sirbu, Angelina Vassileva, Giulio Guagliumi, Giuseppe Musumeci, Amedeo Terzi, et al. "Radiation Therapy-Induced Cardiovascular Disease Treated by a Percutaneous Approach." Case Reports in Cardiology 2015 (2015): 1–4. http://dx.doi.org/10.1155/2015/851624.

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We report the case of a 51-year-old woman, treated with radiotherapy at the age of two years, for a pulmonary sarcoma. Subsequently she developed severe aortic stenosis and bilateral ostial coronary artery disease, symptomatic for dyspnea (NYHA III functional class). Due to the prohibitive surgical risk, she underwent successful stenting in the right coronary artery and left main ostia with drug eluting stents and, afterwards, transcatheter aortic valve replacement with transfemoral implantation of a 23 mm Edwards SAPIEN XT valve. The percutaneous treatment was successful without complications and the patient is in NYHA II functional class at 2 years’ follow-up, fully carrying out normal daily activities.

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Bellotti, P., G. Calderoni, F. Di Rita, M. D’Orefice, C. D’Amico, D. Esu, D. Magri, M. Preite Martinez, P. Tortora, and P. Valeri. "The Tiber river delta plain (central Italy): Coastal evolution and implications for the ancient Ostia Roman settlement." Holocene 21, no. 7 (May 26, 2011): 1105–16. http://dx.doi.org/10.1177/0959683611400464.

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Geomorphologic, stratigraphic, faunistic, palynological and carbon isotope analyses were carried out in the area of the Tiber river mouth. The results depict a complex palaeoenvironmental evolution in the area of the Roman town of Ostia, ascertain the changes of the Tiber river delta over the last 6000 years and support a re-interpretation of some archaeologic issues. The wave-dominated Tiber delta evolved through three distinct phases. In the first step (5000–2700 yr BP) a delta cusp was built at the river mouth, which was located north of the present outlet. Subsequently (2700–1900 BP), an abrupt southward migration of the river mouth determined the abandonment of the previous cusp and the progradation of a new one. The third step, which is still in progress, is marked by the appearance of a complex cusp made up of two distributary channels. The transition from the first to the second evolution phase occurred in the seventh century bc and was contemporary to the foundation of Ostia, as suggested by historical accounts. However, the oldest archaeological evidence of the town of Ostia dates to the fourth century bc, when human activity is clearly recorded also by pollen data. We suggest that the first human settlement (seventh century bc) consisted of ephemeral military posts, with the aim of controlling the strategic river mouth and establishing the Ostia saltworks. Only after the fourth century bc the coastal environment was stable enough for the foundation and development of the town of Ostia.

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de Boisséson, E., M. A. Balmaseda, F. Vitart, and K. Mogensen. "Impact of the sea surface temperature forcing on hindcasts of Madden-Julian Oscillation events using the ECMWF model." Ocean Science Discussions 9, no. 4 (July 23, 2012): 2535–59. http://dx.doi.org/10.5194/osd-9-2535-2012.

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Abstract. This paper explores the sensitivity of the prediction of Madden Julian Oscillation (MJO) events to different aspects of the sea surface temperature (SST) in the European Centre for Medium-range Weather Forecasts (ECMWF) model. The impact of temporal resolution of SST on the MJO is first evaluated via a set of monthly hindcast experiments. The experiments are conducted with an atmosphere forced by persisted SST anomalies, monthly and weekly SSTs. Skill scores are clearly degraded when weekly SSTs are replaced by monthly values or persisted anomalies. The new high resolution OSTIA SST daily reanalysis would in principle allow to establish the impact of daily versus weekly SST values on the MJO prediction. It is found however that OSTIA SSTs provide lower skill scores than the weekly product. Further experiments show that this loss of skill cannot be attributed to either the mean state or the daily frequency of OSTIA SSTs. Additional diagnostics show that the phase relationship between OSTIA SSTs and tropical convection is not optimal with repspect to observations. Such result suggests that capturing the correct SST-convection phase relationship is a major challenge for the MJO predictions.

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S., Rajesh, Vijaya Kumar S., and Manikanda Reddy V. "A study on pulmonary venous ostia pattern in the left atrium and its clinical applications." National Journal of Clinical Anatomy 7, no. 04 (October 2018): 201–4. http://dx.doi.org/10.1055/s-0040-1701737.

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Abstract Background & aims : Normally four pulmonary veins open into the left atrium. Frequently there are variations in the number of pulmonary veins opening in to the left atrium. Ectopic beats in atrial fibrillation commonly originates from the ostia of the pulmonary veins. The treatment of atrial fibrillation is by radio frequency ablation of the focus of origin and hence the knowledge of anatomical variation of pulmonary veins is necessary to find the ectopic focus in the origin of atrial fibrillation. Materials and Method : In this study the variation of pulmonary venous ostia pattern in the left atrium was studied in 80 formalin fixed adult cadaveric hearts. Results and Conclusion : 63 hearts showed no variation in the pulmonary venous ostia pattem which accounts for 78.75%, rest of the 17 hearts showed variation in the pulmonary venous ostia which accounts for 21.25%, the variation in the number of pulmonary veins was slightly higher for the left side [11.25%] when compared to the right sided variation [ 10%], the number of hearts which showed bilateral variation was noted in 2 hearts - both showed a single pulmonary vein opening on either side which accounts for 2.5%

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Bekke, Kirstine, Hanna Dagnegård, Per E. Sigvardsen, and Morten Smerup. "Myocardial ischaemia caused by bilateral coronary ostial stenosis from pseudointimal membranes in a full root freestyle valve: a case report." European Heart Journal - Case Reports 4, no. 5 (September 4, 2020): 1–8. http://dx.doi.org/10.1093/ehjcr/ytaa136.

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Abstract Background Coronary artery ostial stenosis is a rare but well-known complication to aortic root replacement. The occurrence of this complication in patients with the Medtronic Freestyle bioprosthesis is poorly described. We report a case of late bilateral coronary ostial stenosis due to pseudointimal membranes within a Medtronic Freestyle bioprosthesis, resulting in acute coronary syndrome. Case summary In 2013, a 43-year-old male patient received a Medtronic Freestyle bioprosthesis as a full aortic root implantation due to endocarditis with root abscess. Preoperative coronary angiography was normal. The patient, who had no previous symptoms of coronary ischaemia, presented with severe chest pain and acute coronary syndrome in 2017. Coronary angiography and electrocardiogram-gated contrast-enhanced cardiac computed tomography showed bilateral coronary ostial stenosis. The patient was successfully treated with coronary artery bypass grafting. Intraoperative inspection revealed pseudointimal membranes covering the coronary ostia. Histology showed fibro-intimal thickening with areas of inflamed granulation tissue. Discussion Bilateral coronary ostial stenosis is a severe, potentially life-threatening condition, and a possible complication to implantation of the Medtronic Freestyle bioprosthesis as a full root. The phenomenon may occur late and should be distinguished from arteriosclerotic coronary artery disease.

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Beach, Lynn, Allen Burke, Dennis Chute, and Renu Virmani. "Anomalous Origin of 4 Coronary Ostia From the Right Sinus of Valsalva in a Patient With Hypertrophic Cardiomyopathy." Archives of Pathology & Laboratory Medicine 125, no. 11 (November 1, 2001): 1489–90. http://dx.doi.org/10.5858/2001-125-1489-aoocof.

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Abstract Anomalous origin of 4 separate coronary ostia from a single coronary sinus has rarely been reported. We report what is to our knowledge a previously undescribed variation characterized by the left anterior descending, left ramus, left circumflex, and right coronary arteries originating from separate ostia in the right sinus of Valsalva. In addition, the autopsy disclosed features of hypertrophic cardiomyopathy, rarely associated with congenital coronary anomalies.

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Donisan, Teodora, and Luay Sayed. "Dual Ostia Right Coronary Artery." JACC: Cardiovascular Interventions 14, no. 7 (April 2021): e69-e70. http://dx.doi.org/10.1016/j.jcin.2020.12.032.

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Saminathan, Suganya. "MORPHOLOGICAL STUDY OF CORONARY OSTIA." International Journal of Advanced Research 8, no. 02 (February 29, 2020): 1020–106. http://dx.doi.org/10.21474/ijar01/10441.

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MOLS, Stephan T. A. M. "Ricerche sulla pittura di Ostia." BABESCH - Bulletin Antieke Beschaving 77 (January 1, 2002): 151–74. http://dx.doi.org/10.2143/bab.77.0.99.

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STÖGER, Hanna. "Monumental Entrances of Roman Ostia." BABESCH - Bulletin Antieke Beschaving 82, no. 2 (July 31, 2007): 347–63. http://dx.doi.org/10.2143/bab.82.2.2020782.

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Finikiotis, George. "Abnormal Cornual Ostia and Infertility." Australian and New Zealand Journal of Obstetrics and Gynaecology 29, no. 4 (November 1989): 425–27. http://dx.doi.org/10.1111/j.1479-828x.1989.tb01781.x.

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Wang, Lei, Li Yang, Gang Wang, and Tianwen Gao. "Granular Parakeratosis of Eccrine Ostia." American Journal of Dermatopathology 30, no. 1 (February 2008): 65–66. http://dx.doi.org/10.1097/dad.0b013e31815c9016.

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Yang, Ji-Hye, Hyung-Min Lee, Tai-Kyung Noh, Chong-Hyun Won, Sungeun Chang, Mi-Woo Lee, Jee-Ho Choi, and Kee-Chan Moon. "Granular Parakeratosis of Eccrine Ostia." Annals of Dermatology 24, no. 2 (2012): 203. http://dx.doi.org/10.5021/ad.2012.24.2.203.

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Yanagisawa, Eiji, Ken Yanagisawa, Dewey A. Christmas, and Ray Yanagisawa. "Endoscopic Views of the Ostia and Ostia-Like Structures in the Lateral Nasal Wall." Ear, Nose & Throat Journal 83, no. 7 (July 2004): 446–48. http://dx.doi.org/10.1177/014556130408300703.

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Depes, Denis, Ari Mennander, Rauha Vehniäinen, Timo Paavonen, and Ivana Kholová. "Human Pulmonary Vein Myocardial Sleeve Autonomic Neural Density and Cardiovascular Mortality." Journal of Histochemistry & Cytochemistry 70, no. 9 (September 2022): 627–42. http://dx.doi.org/10.1369/00221554221129899.

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Myocardial sleeves around pulmonary veins (PVs) are highly innervated structures with heterogeneous morphological and electrophysiological characteristics. Autonomic nerve dysfunction in the myocardium may be associated with an increased risk of cardiovascular morbidity and mortality. This article studied autonomic neural remodeling in myocardial sleeves around PVs and atrial-PV ostia with immunohistochemical and morphometric methods with clinicopathological correlations. PVs were collected from 37 and atrial-PV ostia from 17 human autopsy hearts. Immunohistochemical analysis was performed using antibodies against tyrosine hydroxylase (TH), choline acetyltransferase (CHAT), and growth-associated protein 43 (GAP43). In the PV cohort, subjects with immediate cardiovascular cause of death had significantly decreased sympathetic nerve density in fibro-fatty tissue vs those with non-cardiovascular cause of death (1624.53 vs 2522.05 µm2/mm2, p=0.038). In the atrial-PV ostia cohort, parasympathetic nerve density in myocardial sleeves was significantly increased in subjects with underlying cardiovascular cause of death (19.48 µm2/mm2) than subjects with underlying non-cardiovascular cause of death with no parasympathetic nerves detected ( p=0.034). Neural growth regionally varied in sympathetic nerves and was present in most of the parasympathetic nerves. Heterogeneous autonomic nerve distribution and growth around PVs and atrial-PV ostia might play a role in cardiovascular morbidity and mortality. No association in nerve density was found with atrial fibrillation.

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Runesson, Anders. "The Oldest Original Synagogue Building in the Diaspora: A Response to L. Michael White." Harvard Theological Review 92, no. 4 (October 1999): 409–33. http://dx.doi.org/10.1017/s0017816000017752.

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In 1997, the Harvard Theological Review published an article written by L. Michael White in which he “presents and analyzes evidence for the social location and organization of Jewish groups in the environs of Rome, specifically from the port city of Ostia” during the first centuries CE. White draws from two sources in his examination: archaeological remains of the Ostia synagogue and rather scanty—but important—epigraphical material, the Mindius Faustus and the Gaius Julius Justus inscriptions. White's study is the most extensive discussion of the archaeological evidence in English since the excavator, Maria Floriani Squarciapino, presented her preliminary reports from the excavations of the synagogue in the early 1960s. Despite the great interest that the synagogue at Ostia aroused when it was unearthed and excavated during two campaigns in 1961 and 1962, it has since been neglected by scholars.

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Seol, Sang Hoon. "Three Separate Coronary Arteries with Hypertrophic Cardiomyopathy." Journal of Medicine 19, no. 2 (July 10, 2018): 136–37. http://dx.doi.org/10.3329/jom.v19i2.37237.

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Coronary arteries anomalies are an uncommon congenital heart disease. Anomalous origin of three separate ostia is the rarest condition. Hypertrophic cardiomyopathy is the most common inherited disease. There have been just few cases of hypertrophic cardiomyopathy in relation with congenital coronary anomaly. In this report, we describe a rare case of anomalous origin of all three coronary arteries from separate ostia with apical hypertrophic cardiomyopathy.J MEDICINE JUL 2018; 19 (2) : 136-137

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Kaur, Amarbir, Anshu Sharma, and Mahesh Sharma. "Variations in the Number of Pulmonary Veins Draining into Left Atrium and its Clinical Significance." International Journal of Medical and Dental Sciences 6, no. 1 (January 1, 2017): 1413. http://dx.doi.org/10.18311/ijmds/2017/18799.

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Background: Pulmonary veins, normally two on each side bring oxygenated blood from lungs to left atrium. During early embryonic life, absorption of pulmonary venous network by the left primitive atrial chamber results in opening of four pulmonary veins which drain independently into its chamber. The extent of absorption and hence, the number of pulmonary veins which open into left atrium may vary.Objective: The study was done to observe the variation in the number of pulmonary veins opening in the left atrium.Materials and method: The present study was done on 30 formalin fixed hearts of unknown age and sex which were obtained from the department of anatomy, Government medical college, Chandigarh. These hearts were observed for the variations in pulmonary ostia on right and left sides and were compared on both sides and also with the earlier data.Results: In 8 (26.67%) out of these 30 hearts, variations were observed in the number of pulmonary veins and ostia either on one side or on both sides of the left atrium. 22 hearts (73.33%) out of 30 hearts had normal pulmonary veins which opened into left atrium via two separate pulmonary ostia, on either side.Conclusion: Knowledge of number of pulmonary veins and their ostia locations is important to ensure that all ostia are ablated, as ectopic foci may go untreated in variant veins.

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Klimek-Piotrowska, Wiesława, Mateusz K. Hołda, Katarzyna Piątek, Mateusz Koziej, and Jakub Hołda. "Normal distal pulmonary vein anatomy." PeerJ 4 (January 14, 2016): e1579. http://dx.doi.org/10.7717/peerj.1579.

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Background.It is well known that the pulmonary veins (PVs), especially their myocardial sleeves play a critical role in the initiation and maintenance of atrial fibrillation. Understanding the PV anatomy is crucial for the safety and efficacy of all procedures performed on PVs. The aim of this study was to present normal distal PV anatomy and to create a juxtaposition of all PV ostium variants.Methods.A total of 130 randomly selected autopsied adult human hearts (Caucasian) were examined. The number of PVs ostia was evaluated and their diameter was measured. The ostium-to-last-tributary distance and macroscopic presence of myocardial sleeves were also evaluated.Results.Five hundred forty-one PV ostia were identified. Four classical PV ostia patterns (two left and two right PVs) were observed in 70.8% of all cases. The most common variant was the classical pattern with additional middle right PV (19.2%), followed by the common ostium for the left superior and the inferior PVs (4.44%). Mean diameters of PV ostia (for the classical pattern) were: left superior = 13.8 ± 2.9 mm; left inferior = 13.3 ± 3.4 mm; right superior = 14.3 ± 2.9 mm; right inferior = 13.7 ± 3.3 mm. When present, the additional middle right PV ostium had the smallest PV ostium diameter in the heart (8.2 ± 4.1 mm). The mean ostium-to-last-tributary (closest to the atrium) distances were: left superior = 15.1 ± 4.6 mm; left inferior = 13.5 ± 4.0 mm; right superior = 11.8 ± 4.0 mm; right inferior = 11.0 ± 3.7 mm. There were no statistically significant differences between sexes in ostia diameters and ostium-to-last-tributary distances.Conclusion.Only 71% of the cases have four standard pulmonary veins. The middle right pulmonary vein is present in almost 20% of patients. Presented data can provide useful information for the clinicians during interventional procedures or radiologic examinations of PVs.

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Venturini, Andrea, Alan Gallingani, Angiolino Asta, Chiara Zanchettin, Giampaolo Zoffoli, Antonio Cannarella, and Domenico Mangino. "Performing Antegrade Selective Cerebral Perfusion Using the AV Cannula: A Novel Approach." AORTA 07, no. 06 (December 2019): 181–84. http://dx.doi.org/10.1055/s-0039-3401997.

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AbstractAntegrade selective cerebral perfusion has become the preferred choice for brain protection during aortic arch surgery. To perform antegrade selective cerebral perfusion, cannulas have been introduced directly into the ostia of the supra-aortic vessels (SAV) after institution of hypothermic circulatory arrest and opening the aortic arch. We describe a different surgical technique with a new type of cannula for antegrade selective cerebral perfusion. This cannula, called AV (Andrea Venturini) cannula, has been designed to be introduced in the SAV directly using a standard guidewire technique (Seldinger's technique). The AV cannula can also be introduced from the ostia of the SAV if preferred. The AV cannula can be introduced before the institution of hypothermic circulatory arrest and before opening the aortic arch. One great advantage of this technique is that the ostia of the SAV remain free from a cannula, allowing the operator easier access and a faster anastomosis or reimplantation.

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Journal articles on the topic 'Ostia'

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