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Journal articles on the topic 'Diving chambers'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

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1

Clarke, Richard. "Monoplace chamber treatment of decompression illness: Review and commentary." Diving and Hyperbaric Medicine Journal 50, no. 3 (2020): 264–72. http://dx.doi.org/10.28920/dhm50.3.264-272.

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This paper summarises the history and capabilities of monoplace chambers in treatment of decompression illness (DCI); both in support of diving operations and in the hospital setting. In the field, monoplace hyperbaric chambers provide victims of DCI immediate access to recompression in settings where traditional multiplace chambers are not available. Alternatively, they may facilitate pressurised transport to a multiplace chamber for continued management. Recently, collapsible lightweight versions have improved suitability for field deployment aboard small vessels in remote settings, and for

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Clarke, Richard. "Monoplace chamber treatment of decompression illness: Review and commentary." Diving and Hyperbaric Medicine Journal 50, no. 3 (2020): 264–72. http://dx.doi.org/10.28920/dhm50.3.264-272.

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This paper summarises the history and capabilities of monoplace chambers in treatment of decompression illness (DCI); both in support of diving operations and in the hospital setting. In the field, monoplace hyperbaric chambers provide victims of DCI immediate access to recompression in settings where traditional multiplace chambers are not available. Alternatively, they may facilitate pressurised transport to a multiplace chamber for continued management. Recently, collapsible lightweight versions have improved suitability for field deployment aboard small vessels in remote settings, and for

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Sokolov, G. M., A. V. Suvorov, and A. T. Logunov. "TOXICOLOGY OF GASEOUS ENVIRONMENT IN DECOMPRESSION CHAMBER." Marine Medicine 4, no. 3 (2018): 83–94. http://dx.doi.org/10.22328/2413-5747-2018-4-3-83-94.

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The paper presents basic concepts of toxicological problems under human containment in a closed hermetic hyperbaric volume basing on the literature data and our own long-term scientific and practical experience aimed at diving and diving medicine, development and testing of the decompression chambers. The paper describes the following essentials of the problem: gaseous atmospheric composition in closed hermetic volumes, evolution of exogenous gases in human organism under lowering in the chamber, evolving hazardous gaseous substances (HGS) in the closed volume, design average daily rate of HGS

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Dolatkowski, Augustyn, A. Szczeblewska, Lucjan Łaba, and Bogdan Łokucijewski. "The sugar level in divers’ blood in hyperbaric conditions." Polish Hyperbaric Research 59, no. 2 (2017): 61–68. http://dx.doi.org/10.1515/phr-2017-0009.

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Abstract The authors examined 104 divers performing dives in water, 14 exposed to simulated conditions in decompression chambers and 11 control subjects. The average blood sugar reading before diving amounted to 100 mg% with readings of 101 mg% after diving, whereas in the control group these readings were 107 and 100 mg% respectively and in the group of simulated dives, 102 before and 106 mg% after the exposure. It was found that the diet applied ensured a sufficiently high level blood sugar level in the subjects to protect them against hypoglycaemia. Further research in decompression chamber

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Zaman, Taylan, Abdusselam Celebi, Bengusu Mirasoglu, and Akin Savas Toklu. "The evaluation of in-chamber sound levels during hyperbaric oxygen applications: Results of 41 centres." Diving and Hyperbaric Medicine Journal 50, no. 3 (2020): 244–49. http://dx.doi.org/10.28920/dhm50.3.244-249.

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Introduction: Noise has physical and psychological effects on humans. Recommended exposure limits are exceeded in many hospital settings; however, information about sound levels in hyperbaric oxygen treatment chambers is lacking. This study measured in-chamber sound levels during treatments in Turkish hyperbaric centres. Methods: Sound levels were measured using a sound level meter (decibel meter). All chambers were multiplace with similar dimensions and shapes. Eight measurements were performed in each of 41 chambers; three during compression, three during decompression, and two at treatment

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T., Stanciu. "Control of metabolic gases in hyperbaric chambers." Scientific Bulletin of Naval Academy XXII, no. 2 (2019): 61–68. http://dx.doi.org/10.21279/1454-864x-19-i2-007.

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Respiratory effort in hyperbaric conditions is increased, leading to an increase in the diver's respiratory flow, increased oxygen consumption, and consistent carbon dioxide production. The knowledge of these physical and physiological phenomena involved during the hyperbaric respiration was studied theoretically in collaboration with the "Ovidius" University of Constanta, Faculty of Medicine. They were verified by experimental determinations on groups of divers in the Diving Center hyperbaric complex.

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Bumai, O. K., G. S. Torshin, and S. V. Malinina. "Features of medical and sanitary provision of diving operations in the Arctic zone of the Russian Federation." Marine Medicine 8, no. 1 (2022): 69–73. http://dx.doi.org/10.22328/2413-5747-2022-8-1-69-73.

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The purpose of the scientific article is to study and analyze the features of medical and sanitary provision of diving operations in the Arctic zone of the Russian Federation.Materials and methods. The application of theoretical and empirical research methods allowed analyzing the features of medical and sanitary provision of diving operations in the Arctic.Results and their discussion. Studies have shown that the peculiarities of medical and sanitary provision of diving operations in the Arctic zone of the Russian Federation are associated with the prevention and treatment of hypothermia and

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Yakhontov, B. O. "STRUCTURE AND FUNCTION OF LIFE SUPPORT SYSTEMS FOR DIVING HYPERBARIC CHAMBERS." International Journal of Applied and Fundamental Research (Международный журнал прикладных и фундаментальных исследований), no. 11 2018 (2018): 34–39. http://dx.doi.org/10.17513/mjpfi.12446.

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Yakhontov, B. O. "PRINCIPLES OF MEASURING BIOPHYSICAL PARAMETERS OF THE ENVIRONMENT IN DIVING PRESSURE CHAMBERS." International Journal of Applied and Fundamental Research (Международный журнал прикладных и фундаментальных исследований), no. 7 2020 (2020): 7–13. http://dx.doi.org/10.17513/mjpfi.13092.

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Manni, Corrado, and Sergio I. Magalini. "Mobile Hyperbaric Chambers for Early Treatment and Air Transportation in Diving Accidents." Journal of the World Association for Emergency and Disaster Medicine 1, no. 1 (1985): 73–75. http://dx.doi.org/10.1017/s1049023x00032817.

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The rescue of victims of accidents during underwater activities, and the treatment of the pathology provoked by too rapid ascent in diving, are unfortunately problems which still remain relevant today. The concept of rapid artificial recompression is at the basis of the fundamental therapeutic techniques for the early treatment of all those involved in accidents of this type. Though numerous advances have been achieved in this field, many practical limitations still prevent their complete utilization.

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Marco Ivaldi, Andrea Ciavattini, and Cugliari Giovanni. "Heart rate analysis during very deep dives in flooded caves: single case study." International Journal of Physical Education, Fitness and Sports 9, no. 3 (2020): 9–17. http://dx.doi.org/10.34256/ijpefs2032.

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The purpose of this study is to investigate the heart rate adaptations during deep dave diving with MCCR (mechanical closed circuit rebreather). Previous studies on this matter have not been conducted to the depths reached in this study and most of them have been conducted inside hyperbaric chambers trying to recreate the immersion conditions. The data collection took place during the exploration of two hydrogeological sites by a professional cave diver. The recordings were made using a SCUBAPRO GALILEO SOL® dive computer capable of monitoring the heart rate, with a sampling interval of 0,25 H

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Dziewiatowski, Krzysztof, Romuald Olszański, and Piotr Siermontowski. "A Case of Decompression Sickness Associated With PFO in a Dive Medical Officer." Polish Hyperbaric Research 75, no. 2 (2021): 15–24. http://dx.doi.org/10.2478/phr-2021-0008.

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Abstract Current medical guidelines and regulations do not require routine examinations for the right-to-left shunt at divers. We present the case of a Polish Navy Dive Medical Officer (DMO) who more than 20 years ago suffered from decompression ilness - bends accompanied by cutis marmorata, numbness in one limb and mild vertigo. After treatment in decompression chamber all symptoms entirely resolved. Since then, despite of continuing diving, he experienced no decompression ilness symptoms. Twenty years later, then 52 years-old, the DMO was admitted as a patient to the Neurology Department at

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Bruzzone, Agostino, Matteo Agresta, and Kirill Sinelshchikov. "Modeling Human Physiology Coupled With Hyperbaric Plant Simulation for Oil and Gas." International Journal of Privacy and Health Information Management 8, no. 1 (2020): 1–12. http://dx.doi.org/10.4018/ijphim.2020010101.

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Underwater activities are an essential part of different industrial fields, and if in some cases autonomous and remotely controlled solutions could be used, often intervention of human divers is pivotal. In order to operate at depths of tens to hundreds of meters, the main technique that allows safe and efficient operation is called saturation diving, which foresees gradual adaptation of divers to harsh underwater conditions by means of hyperbaric chambers. This type of facility requires highly qualified personnel for management; however, nowadays, most training is done on empty industrial pla

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Muljadi, Michael, Yi-Chen Fu, and Chao-Min Cheng. "Understanding the Cell’s Response to Chemical Signals: Utilisation of Microfluidic Technology in Studies of Cellular and Dictyostelium discoideum Chemotaxis." Micromachines 13, no. 10 (2022): 1737. http://dx.doi.org/10.3390/mi13101737.

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Cellular chemotaxis has been the subject of a variety of studies due to its relevance in physiological processes, disease pathogenesis, and systems biology, among others. The migration of cells towards a chemical source remains a closely studied topic, with the Boyden chamber being one of the earlier techniques that has successfully studied cell chemotaxis. Despite its success, diffusion chambers such as these presented a number of problems, such as the quantification of many aspects of cell behaviour, the reproducibility of procedures, and measurement accuracy. The advent of microfluidic tech

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Ljubkovic, Marko, Jasna Marinovic, Ante Obad, Toni Breskovic, Svein E. Gaustad, and Zeljko Dujic. "High incidence of venous and arterial gas emboli at rest after trimix diving without protocol violations." Journal of Applied Physiology 109, no. 6 (2010): 1670–74. http://dx.doi.org/10.1152/japplphysiol.01369.2009.

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SCUBA diving is associated with generation of gas emboli due to gas release from the supersaturated tissues during decompression. Gas emboli arise mostly on the venous side of circulation, and they are usually eliminated as they pass through the lung vessels. Arterialization of venous gas emboli (VGE) is seldom reported, and it is potentially related to neurological damage and development of decompression sickness. The goal of the present study was to evaluate the generation of VGE in a group of divers using a mixture of compressed oxygen, helium, and nitrogen (trimix) and to probe for their p

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Garell, Madeline, Mahsa Abbaszadeh, and Marta Hatzell. "Application of Reverse Electrodialysis Power for Oxygen Generation in Undersea Diving." ECS Meeting Abstracts MA2022-02, no. 26 (2022): 1014. http://dx.doi.org/10.1149/ma2022-02261014mtgabs.

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With continued growth of marine exploration and underwater missions, there is a need to design new diving technologies. Currently, dive time is limited by scuba tank weight and volume. The use of an electrolysis system, powered by a battery, for driving chemical reactions could be introduced to produce a steady supply of oxygen during dives. However, batteries have a limited capacity, are heavy, and are detrimental to the environment when disposed. Developing an electrochemical technology that utilizes resources abundantly available to a diver (salt water) to drive the oxygen evolution reactio

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Paganini, Matteo, Richard E. Moon, Nicole Boccalon, et al. "Blood gas analyses in hyperbaric and underwater environments: a systematic review." Journal of Applied Physiology 132, no. 2 (2022): 283–93. http://dx.doi.org/10.1152/japplphysiol.00569.2021.

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Pulmonary gas exchange during diving or in a dry hyperbaric environment is affected by increased breathing gas density and possibly water immersion. During free diving, there is also the effect of apnea. Few studies have published blood gas data in underwater or hyperbaric environments: this review summarizes the available literature and was used to test the hypothesis that arterial Po2 under hyperbaric conditions can be predicted from blood gas measurement at 1 atmosphere assuming a constant arterial/alveolar Po2 ratio (a:A). A systematic search was performed on traditional sources including

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Siermontowski, Piotr, and Stanisław Skrzyński. "Formal and Professional Requirements for Medical, Paramedical and Technical Staff of Hyperbaric Centres. Part 2." Polish Hyperbaric Research 70, no. 1 (2020): 7–20. http://dx.doi.org/10.2478/phr-2020-0001.

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AbstractThis two-part article reviews the current legal situation of professional personnel implementing hyperbaric procedures other than those used for diving. Numerous inconsistencies between the existing legal acts and the lack of legal regulations concerning procedures not financed from the State budget are shown.The first significant problem was the lack of mutual correlation of various regulations of the Minister of Health concerning hyperbaric diseases, as well as incoherence with medical and nursing specialisation programs in force in Poland.The second problem is the lack of requiremen

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Gulyar, Sergiy A., and Yuri M. Barats. "Habitable Underwater Hyperbaric Facilities: Respiratory Balance in the Human Organism During Adapting to Saturation Nitrogen-Oxygen Hyperbaria." Polish Hyperbaric Research 68, no. 3 (2019): 93–118. http://dx.doi.org/10.2478/phr-2019-0014.

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Abstract There were evaluated responses of the respiratory system to changes in the variables of the external environment under increased pressure. To the model of professional underwater human activity underwater served the conditions of full saturation in compressed air or nitrogen-oxygen gas mixtures. Technical devices were presented by a number of underwater laboratories, mounted at the bottom (Ikhtiander-66, 67 and 68), hyperbaric chambers, submersible drilling rigs (Bur-1 and 2), and an autonomous diving Ikhtiander-2 for a long stay in the water. Studies of respiratory gases mass transpo

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Sánchez, Carlos, Alberto Hernando, Juan Bolea, et al. "Enhancing Safety in Hyperbaric Environments through Analysis of Autonomic Nervous System Responses: A Comparison of Dry and Humid Conditions." Sensors 23, no. 11 (2023): 5289. http://dx.doi.org/10.3390/s23115289.

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Diving can have significant cardiovascular effects on the human body and increase the risk of developing cardiac health issues. This study aimed to investigate the autonomic nervous system (ANS) responses of healthy individuals during simulated dives in hyperbaric chambers and explore the effects of the humid environment on these responses. Electrocardiographic- and heart-rate-variability (HRV)-derived indices were analyzed, and their statistical ranges were compared at different depths during simulated immersions under dry and humid conditions. The results showed that humidity significantly a

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Sethuraman, Kinjal, Michael Tom, Kin Wah Chew, Jonathan Romero-Casillas, and Kevin Hardy. "Quantification of referrals received at two emergency-capable hyperbaric medicine centers." Undersea and Hyperbaric Medicine 51, no. 2 (2024): 97–100. http://dx.doi.org/10.22462/653.

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ABSTRACT Sethuraman K, Tom M, Chew KW, Ramon Y, Romero-Casillas J, Hardy K. Quantification of referrals received at two emergency-capable hyperbaric medicine centers. Undersea Hyperb Med. 2024 Second Quarter; 51(2):97-100. Emergency hyperbaric oxygen treatment capability is limited in the United States, and there is little documentation of calls received by centers available 24 hours a day, seven days a week, 365 days a year. Our study aimed to calculate the number of calls received for urgent hyperbaric oxygen (HBO2). We logged calls from two HBO2 chambers on the East Coast of the United Stat

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Romadoni, Muhammad Aulia Hikmah, Dwi Rahmat, and Eka Ari Yuliyani. "Inner Ear Decompression Sickness (Iedcs) in Divers." Journal of Social Research 2, no. 1 (2022): 134–41. http://dx.doi.org/10.55324/josr.v2i1.482.

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Background: Inner ear decompression sickness (IEDCS) is a common disease in divers. In Indonesia, IEDCS is often experienced by diver fishermen in fulfilling their daily needs. In general, decompression sickness (DCS) is caused by the formation of gas bubbles in blood vessels and organ tissues. This is due to the deposition of gas bubbles in the endolymphatic and perilymphatic spaces during the process of their rapid rise to the surface.  Objective: This study aims to identify IEDCS disease in divers.  Method: This study used a qualitative approach with a case study mod

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Shupak, Avi, Ervin Ostfeld, Zohara Sharoni, and Ilana Doweck. "Pressure Chamber Tympanometry in Diving Candidates." Annals of Otology, Rhinology & Laryngology 100, no. 8 (1991): 658–60. http://dx.doi.org/10.1177/000348949110000811.

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Fine, Deborah M., Anthony H. Tobias, and Kristin A. Jacob. "Supravalvular Mitral Stenosis in a Cat." Journal of the American Animal Hospital Association 38, no. 5 (2002): 403–6. http://dx.doi.org/10.5326/0380403.

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A 3-year-old, 4-kg, castrated male domestic shorthair cat presented with signs of progressive respiratory distress. Thoracic radiographs showed pulmonary edema and pleural effusion. Echocardiography revealed a perforate membrane immediately above the mitral valve that divided the left atrium into proximal and distal chambers. The left auricle was proximal to the dividing membrane and connected to the markedly enlarged proximal left atrial chamber, consistent with the diagnosis of supravalvular mitral stenosis (SMS). Position of the obstructing membrane relative to the left auricle distinguishe

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Utama, Winda Trijayanthi. "Occupational Diving : Neurological Complications of Diving." Conferences of Medical Sciences Dies Natalis Faculty of Medicine Universitas Sriwijaya 1, no. 1 (2019): 292–305. http://dx.doi.org/10.32539/confmednatalisunsri.v1i1.33.

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Banyak pekerjaan yang dilakukan melalui kegiatan menyelam dengan tujuan penelitian, pencarian makanan laut, konstruksi, pemeliharaan alam, pembuatan film, militer, forensik dan penyelamatan, bahkan eksplorasi dan konstruksi ladang minyak lepas pantai juga dilakukan dengan proses menyelam. Artikel ini membahas tentang Occupational diving (penyelaman di tempat kerja) yang merupakan kegiatan menyelam yang dilakukan dalam pekerjaan untuk mendapatkan atau memberi imbalan (terlepas dari apakah menyelam merupakan fungsi utama pekerjaan atau hanya merupakan tambahan untuk itu). Terdapat 3 cara penyela

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Szulborski, Michał, Sebastian Łapczyński, and Łukasz Kolimas. "Increasing Magnetic Blow-Out Force by Using Ferromagnetic Side Plates inside MCB." Energies 15, no. 8 (2022): 2776. http://dx.doi.org/10.3390/en15082776.

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The paper presents a modern method of computer modeling, concerning the low-voltage extinguishing chambers employed in modular apparatuses. The focus was put on presenting the phenomenon of increasing the blow-out, through the use of ferromagnetic plates, dividing the electric arc inside the electrical apparatus. The use of ferromagnetic material for the production of extinguishing chambers results in the distortion of the magnetic field generated by the electric arc. This creates a magnetic force that draws the arc towards the plate area of the extinguishing chamber. The authors presented a m

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Seol, Sang-Hoon. "Double-chambered Right Ventricle after Ventricular Septal Defect Operation Presenting as Syncope." Journal of Medicine 21, no. 1 (2019): 65–66. http://dx.doi.org/10.3329/jom.v21i1.44103.

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Double-chambered right ventricle (DCRV) is a cardiac disease of the right ventricular outflow tract obstruction characterized by anomalous muscle bundles that divide the right ventricle into two chambers. It may be also develop over time as an acquired lesion in patients with an abnormally short distance between the moderator band and the pulmonary valve. This report highlights the case of a man with double-chambered right ventricle after ventricular septal defect operation, who presented with syncope J MEDICINE JAN 2020; 21 (1) : 65-66

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Nwaoha, Thaddeus Chidiebere, and Ikuobase Emovon. "Fuzzy Cost Modelling of Diving Chamber Control Measures under Uncertainties." Pomorstvo 34, no. 2 (2020): 438–42. http://dx.doi.org/10.31217/p.34.2.24.

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The diving chamber is an important system needed for diving operations in the oil and gas industry. Divers use it for various purposes. Thus, the safety level of the diving chamber needs to be very high at all times and the system needs to be in a good state. To achieve this, various control measures such as control measures 1 and 2 can be adopted in preventing failures/hazards or mitigate their consequences. In this study, fuzzy cost algorithm is used to estimate the cost of using control measures 1 and 2 in ensuring optimal operational level for the diving chamber, while the preference degre

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Nadeem, Umair, Hamza Irfan, and Kashif Shahzad. "Social Media Fuels Polarization in Muslim Countries." Bulletin of Business and Economics (BBE) 12, no. 3 (2023): 398–401. http://dx.doi.org/10.61506/01.00046.

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The majority of People are Polarize online in Muslim countries of world. It is very easy to create polarize groups with the use of Social Media. The purpose of the study to measures Polarization and the echo chamber feature of Social Media in Islamic Republic of Pakistan. The results suggested that Social Media Polarization extreme form is existed and also confirmed that Social Media new Algorithms creating echo chambers. The interesting results suggested that our respondent wants diversity not echo chamber. People are politically Polarize because of fake and emotional content. It is the respo

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Dąbrowiecki, Zbigniew, Małgorzata Dąbrowiecka, Romuald Olszański, and Piotr Siermontowski. "Microbial Contamination of a Diving Suit." Polish Hyperbaric Research 62, no. 1 (2018): 61–74. http://dx.doi.org/10.2478/phr-2018-0005.

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Abstract Pathogenic micro-organisms can easily transfer from the surface of a diver’s skin onto the surfaces of a protective suit. A long-term stay in a hyperbaric chamber during a saturation dive increases the risk of infection if in the chamber there is even a single carrier of disease-causing pathogens. The conducted research has confirmed that the diving equipment located in Diving Centres is a place of many different bacteria and fungi, including pathogenic ones. The vast majority of microbes found on the surfaces of wetsuits, etc. are commensals (with some being opportunistic organisms).

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Liu, Jing, Wenzhuo Yu, Yawei Fang, Zimao Pan, and Guohui Cao. "Finite Element Analysis on the Seismic Performance of Concrete-Filled Steel Tube Columns with a Multiple-Chamber Round-Ended Cross-Section." Buildings 14, no. 4 (2024): 1154. http://dx.doi.org/10.3390/buildings14041154.

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This study proposes a form of concrete-filled steel tube column with a multiple-chamber round-ended cross-section (M-CFST). Longitudinal and transverse stiffening ribs divide the circular-ended section into different chambers, strengthening the steel tube’s confinement effect on the core concrete and improving the component’s seismic performance. A three-dimensional finite element (FE) solid model of the M-CFST is created by employing the FE software ABAQUS. Quasi-static analysis is conducted to investigate the influence of parameters, such as chamber arrangement, aspect ratio, and axial compr

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Audra, Philippe, Jean-Claude D’antoni-Nobecourt, and Jean-Yves Bigot. "Hypogenic caves in France. Speleogenesis and morphology of the cave systems." Bulletin de la Société Géologique de France 181, no. 4 (2010): 327–35. http://dx.doi.org/10.2113/gssgfbull.181.4.327.

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Abstract Hypogenic caves develop by recharge from below, not directly influenced by seepage from the overlying land surface. Several processes of speleogenesis are combined, involving CO2 or H2S produced at depth. If the recharge from depth remains uniform, the growth of selected fissures is prevented, giving rise to maze cave systems with an upward development trend, which is defined as “transverse speleogenesis” [Klimchouk, 2003]. Hypogenic caves are much fewer than epigenic caves (i.e. developed downwards by meteoric water with aggressivity derived from soil). In France, as in the rest of t

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Pradana, Furqon Satria Adi, Lucia Kris Dinarti, and Putrika Prastuti Ratna Gharini. "A Woman with Double Chamber Right Ventricle." ACI (Acta Cardiologia Indonesiana) 7, no. 1 (2021): 63–67. http://dx.doi.org/10.22146/jaci.v7i1.545.

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Introduction: An additional membrane or muscle band inside right ventricle divides it into two chambers, the proximal and distal one. It is a rare congenital malformation which makes up approximately 0.5-1 per cent of all congenital heart defects. The double chambers right ventricle most often present in children but rarely in adults. Transoesophageal Echocardiography is the most effective tool in diagnosing a DCRV.Case presentation: A 36 years old woman, diagnosed with large ventricular septal defect by transthoracic echocardiography, underwent a TOE to complement the preparation of surgical

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Esiemoghie, Akhigbe, Fares Munes, Harris Jeffrey, and Stines Jack. "The Multilayered Atrium: An Unusual Case of a Life-Threatening Cor Triatriatum With Persistent Levotrial Cardinal Vein in a 2-Month-Old Infant." Journal of Investigative Medicine High Impact Case Reports 11 (January 2023): 232470962311712. http://dx.doi.org/10.1177/23247096231171247.

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Cor triatriatum sinister (CTS) is a rare congenital cardiac malformation. In CTS, a fibromuscular membrane subdivides the left atrium into 2 chambers. The communication between the 2 chambers is through 1 or more orifices in the dividing membrane. We present an interesting case of a 2-month-old infant with obstructed CTS membrane who first presented on account of poor feeding and failure to thrive. Echocardiography showed a persistent levoatrial cardinal vein (LACV) connecting the left atrium and the innominate vein. This allowed the proximal left atrial chamber to decompress its blood volume

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Wang, Jung Chang, and Yu Pin Tsai. "Analysis for Diving Regulator of Manufacturing Process." Advanced Materials Research 213 (February 2011): 68–72. http://dx.doi.org/10.4028/www.scientific.net/amr.213.68.

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Diving regulator converts the compressed air in a tank into atmosphere air for divers and plays a very important role of SCUBA diving apparatus. The article analyzes its manufacturing process of injection mold in order to enhance the strength after insert molding through the good thermal performance of vapor chamber. The insert molding process is that the metal insert is firstly put into the cavity and then composed an embedded metal-plastic product by injection molding. These results proved that the product strength can be improved significantly with a yield rate up to 100% through this manuf

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Gelmann, Dominique, Gregory Jasani, Siamak Moayedi, and Douglas Sward. "Inner ear decompression sickness in a hyperbaric chamber inside tender: a case report." Undersea and Hyperbaric Medicine 48, no. 4 (2021): 443–48. http://dx.doi.org/10.22462/07.08.2021.9.

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Inner ear decompression sickness (IEDCS) is a rare diving complication that presents with vestibular dysfunction, cochlear dysfunction, or a combination of both. While scuba diving is a known cause, no cases have been reported in the occupational hyperbaric setting. We present the case of a 55-year-old man who developed IEDCS after working as a hyperbaric multiplace chamber inside tender. The patient was treated with seven sessions of hyperbaric oxygen therapy, resulting in resolution of the majority of his symptoms. This case illustrates a potential occupational hazard of working in a hyperba

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Imbert, Jean-Pierre, Jean-Yves Massimelli, Ajit Kulkarni, Lyubisa Matity, and Philip Bryson. "A review of accelerated decompression from heliox saturation in commercial diving emergencies." Diving and Hyperbaric Medicine Journal 52, no. 4 (2022): 245–59. http://dx.doi.org/10.28920/dhm52.4.245-259.

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Introduction: Saturation diving is a specialised method of intervention in offshore commercial diving. Emergencies may require the crew to be evacuated from the diving support vessel. Because saturation divers generally need several days to reach surface, the emergency evacuation of divers is based on dedicated hyperbaric rescue systems. There are still potential situations for which these systems cannot be used or deployed, and where an emergency decompression provides an alternative solution. Methods: Our objective was to describe historical cases and assess the benefit of emergency decompre

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Bezza, Sofia, Mohamed Imad Rhoujjati, Mohammed Eljamili, Saloua El Karimi, and Mustapha Elhattaoui. "Isolated Double-Chambered Right Ventricle: A Rare Congenital Heart Disease." Cardiology and Angiology: An International Journal 13, no. 1 (2024): 1–4. http://dx.doi.org/10.9734/ca/2024/v13i1385.

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Double-chambered right ventricle (DCRV) is an uncommon congenital heart condition characterized by a progressive obstruction in the right ventricular outflow tract. This obstruction is caused by anomalous muscles or fibrous tissues that divide the right ventricle into two cavities: a proximal high-pressure chamber (anatomically lower) and a distal low-pressure chamber (anatomically higher). We present a case of a middle-aged man with a medical history of recurrent symptomatic dyspnea. Upon presentation, there were no signs of congestive cardiac failure. The diagnosis was confirmed using transt

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Bharucha, Tara, Diane E. Spicer, Timothy J. Mohun, David Black, G. William Henry, and Robert H. Anderson. "Cor triatriatum or divided atriums: which approach provides the better understanding?" Cardiology in the Young 25, no. 2 (2014): 193–207. http://dx.doi.org/10.1017/s1047951114000572.

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AbstractIt is frequent, in the current era, to encounter congenital cardiac malformations described in terms of “cor triatriatum”. But can hearts be truly found with three atrial chambers? The morphological method, emphasised by Van Praagh et al, states that structures within the heart should be defined on the basis of their most constant components. In the atrial chambers, it is the appendages that are the most constant components, and to the best of our knowledge, hearts can only possess two appendages, which can be of either right or left morphology. The hearts described on the basis of “co

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Lima, Yuri T. B., Mateus das Neves Gomes, Camila F. Cardozo, Liércio André Isoldi, Elizaldo D. Santos, and Luiz Alberto Oliveira Rocha. "Analysis of Geometric Variation of Three Degrees of Freedom through the Constructal Design Method for a Oscillating Water Column Device with Double Hidropneumatic Chamber." Defect and Diffusion Forum 396 (August 2019): 22–31. http://dx.doi.org/10.4028/www.scientific.net/ddf.396.22.

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This paper presents a biphasic two-dimensional numerical study of sea wave energy converters with operating principle being Oscillating Water Column (CAO) devices with two couples chambers. For the study of the geometric optimization, the Constructal Design method is applied in association with the exhaustive search method to determine the geometric arrangement that leads to the greatest hydropneumatic power available. The objective function is the maximization of hydropneumatic power converted by the device. The constraints of the problem are the inflow volumes of the hydropneumatic chamber (

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Ferrigno, Massimo, Guido Ferretti, Avery Ellis, et al. "Cardiovascular changes during deep breath-hold dives in a pressure chamber." Journal of Applied Physiology 83, no. 4 (1997): 1282–90. http://dx.doi.org/10.1152/jappl.1997.83.4.1282.

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Ferrigno, Massimo, Guido Ferretti, Avery Ellis, Dan Warkander, Mario Costa, Paolo Cerretelli, and Claes E. G. Lundgren. Cardiovascular changes during deep breath-hold dives in a pressure chamber. J. Appl. Physiol.83(4): 1282–1290, 1997.—Electrocardiogram, cardiac output, and blood lactate accumulation were recorded in three elite breath-hold divers diving to 40–55 m in a pressure chamber in thermoneutral (35°C) or cool (25°C) water. In two of the divers, invasive recordings of arterial blood pressure were also obtained during dives to 50 m in cool water. Bradycardia during the dives was more p

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Boässon, M. P., R. Rienks, A. van de Ven, and R. A. van Hulst. "Arrhythmogenicity of scuba diving Holter monitoring in a hyperbaric environment." Undersea and Hyperbaric Medicine 46, no. 4 (2019): 421–27. http://dx.doi.org/10.22462/06.08.2019.4.

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Introduction: About 26% of diving-related fatalities are caused by cardiac disease, part of which might be associated with fatal arrhythmias. This raises the question as to whether fatal arrhythmias are being provoked by hyperbaric conditions themselves or if exercise or stress provokes the fatal arrhythmias in cases of underlying (ischemic) cardiac disease. Objective: To measure the influence of hyperbaric conditions (50 msw) on cardiac conduction and arrhythmias in professional divers by means of ECG. Methods: This is a prospective study on military divers in a hyperbaric chamber with contin

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Ferrigno, M., D. D. Hickey, M. H. Liner, and C. E. Lundgren. "Simulated breath-hold diving to 20 meters: cardiac performance in humans." Journal of Applied Physiology 62, no. 6 (1987): 2160–67. http://dx.doi.org/10.1152/jappl.1987.62.6.2160.

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Cardiac performance was assessed in six subjects breath-hold diving to 20 m in a hyperbaric chamber, while nonsubmersed or submersed in a thermoneutral environment. Cardiac index and systolic time intervals were obtained with impedance cardiography and intrathoracic pressure with an esophageal balloon. Breath holding at large lung volume (80% vital capacity) decreased cardiac index, probably by increasing intrathoracic pressure and thereby impeding venous return. During diving, cardiac index increased (compared with breath holding at the surface) by 35.1% in the nonsubmersed and by 29.5% in th

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Sergeevich, Ezhov, Semicheva Evgenievna, Ezhova Vladimirovna, and Brezhnev Viktorovich. "Energy efficient water desalination technology." Journal of Applied Engineering Science 18, no. 4 (2020): 614–17. http://dx.doi.org/10.5937/jaes0-28676.

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The work relates to the technique of desalination of sea and saline waters and can be used to obtain desalinated water with generation of electrical energy. The proposed technology of water desalination is implemented by an autonomous solar desalination-electric generator, containing a rectangular body, the roof of which is covered from above with photocells with a storage unit, an inclined evaporating tray is placed inside the body, dividing the body cavity into evaporation and condensation chambers, communicating with each other at the sides of the body through vertical slots at the ends of

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Vohmyakov, A. M., M. D. Kazyaev, and D. M. Kazyaev. "CHAMBER FURNACE WITH DIVIDING THE WORKING SPACE." Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 56, no. 9 (2015): 30. http://dx.doi.org/10.17073/0368-0797-2013-9-30-33.

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Kvadsheim, Petter H., Lars P. Folkow, and Arnoldus Schytte Blix. "Inhibition of shivering in hypothermic seals during diving." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 289, no. 2 (2005): R326—R331. http://dx.doi.org/10.1152/ajpregu.00708.2004.

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The mammalian response to hypothermia is increased metabolic heat production, usually by way of muscular activity, such as shivering. Seals, however, have been reported to respond to diving with hypothermia, which in other mammals under other circumstances would have elicited vigorous shivering. In the diving situation, shivering could be counterproductive, because it obviously would increase oxygen consumption and therefore reduce diving capacity. We have measured the electromyographic (EMG) activity of three different muscles and the rectal and brain temperature of hooded seals ( Cystophora

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Wang, Qiong, Marc Belhomme, François Guerrero, Aleksandra Mazur, Kate Lambrechts, and Michaël Theron. "Diving under a Microscope—A New Simple and Versatile In Vitro Diving Device for Fluorescence and Confocal Microscopy Allowing the Controls of Hydrostatic Pressure, Gas Pressures, and Kinetics of Gas Saturation." Microscopy and Microanalysis 19, no. 3 (2013): 608–16. http://dx.doi.org/10.1017/s1431927613000378.

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AbstractHow underwater diving effects the function of the arterial wall and the activities of endothelial cells is the focus of recent studies on decompression sickness. Here we describe an in vitro diving system constructed to achieve real-time monitoring of cell activity during simulated dives under fluorescent microscopy and confocal microscopy. A 1-mL chamber with sapphire windows on both sides and located on the stage of an inverted microscope was built to allow in vitro diving simulation of isolated cells or arteries in which activities during diving are monitored in real-time via fluore

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Artemenko, E. S., and I. K. Logosha. "CASE OF A TREATMENT OF THE SERIOUS BAROTRAUMA OF THE LUNGS USING THE MODERN DIVING CHAMBER." Marine Medicine 4, no. 2 (2018): 67–72. http://dx.doi.org/10.22328/2413-5747-2018-4-2-67-72.

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Barotrauma of the lungs is a serious diver’s professional disease with the rupture of lung tissue and gas spreading away from the alveolar space. The radical way of treatment of the barotrauma of the lungs is the urgent therapeutic recompression in the diving chamber. The clinical case of a successful treatment of the barotrauma of the lungs combined with the drowning using the modern mobile autonomous barocomplex is particularly observed. The diagnostic data obtained during the examination in the hospital is analyzed. The results of the computed tomography of the chest for effi ciency evaluat

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T, Stanciu. "Aspects regarding the maintenance of climate inside the hyperbaric chamber of the Diving Center." Scientific Bulletin of Naval Academy XIX, no. 1 (2018): 77–84. http://dx.doi.org/10.21279/1454-864x-18-i1-011.

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The climate conditioning of a hyperbaric chamber is extremely important, as the health or even lives of the divers depend on it. Climate conditioning consists of controlling and maintaining the following factors inside the enclosure:  Temperature  Humidity  The parameters of the breathing gas In this paper I have analyzed some of the aspects regarding the thermo-hygrometric phenomena and the composition of the breathing gas mix, phenomena that accompany any dive in saturation. The variation in temperature and humidity under pressure and during decompression differs from the unitary dives wi

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Pascu, Doru Romulus, Radu Alexandru Roşu, Iuliana Duma, and Horia Daşcău. "Quality Assessment of Weldable Steel Mark P355NH from Decompression Chamber Construction for Diving." Applied Mechanics and Materials 217-219 (November 2012): 2381–87. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.2381.

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Non-alloyed P355NH steel according to EN 10028-3:2003 belongs to a group of fine-grained steels for pressure vessels being used in welded construction at decompression chamber for divers. Values of the chemical, structural and mechanical characteristics and steel toughness experimentally determined fit the analyzed steel in P355NH steel group according to EN 10028-3:2003. The toughness of the analyzed steel at the test temperature of -30°C is characterized by high values of fracture energy KV in longitudinal direction between 48 and 86 J and on transverse direction between 17 and 34J. Steel to

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