Relevant bibliographies by topics / Relative hyperemia index

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Academic literature on the topic 'Relative hyperemia index'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Relative hyperemia index"

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Knaapen, Paul, Tjeerd Germans, Paolo G. Camici, et al. "Determinants of coronary microvascular dysfunction in symptomatic hypertrophic cardiomyopathy." American Journal of Physiology-Heart and Circulatory Physiology 294, no. 2 (2008): H986—H993. http://dx.doi.org/10.1152/ajpheart.00233.2007.

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Impaired hyperemic myocardial blood flow (MBF) in hypertrophic cardiomyopathy (HCM), despite normal epicardial coronary arteries, results in microvascular dysfunction. The aim of the present study was to determine the relative contribution of extravascular compressive forces to microvascular dysfunction in HCM. Eighteen patients with symptomatic HCM and normal coronary arteries and 10 age-matched healthy volunteers were studied with PET to quantify resting and hyperemic MBF at a subendocardial and subepicardial level. In HCM patients, MRI was performed to determine left ventricular (LV) mass i
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Chlasta-Twardzik, Edyta, Aleksandra Górecka-Nitoń, Anna Nowińska, and Edward Wylęgała. "The Influence of Work Environment Factors on the Ocular Surface in a One-Year Follow-Up Prospective Clinical Study." Diagnostics 11, no. 3 (2021): 392. http://dx.doi.org/10.3390/diagnostics11030392.

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The purpose of this study was to assess the effect of environmental working conditions on the symptoms and signs of dry eye disease and to examine whether and how those conditions impact the ocular surface. Methods: This single-center, prospective clinical study with a 1-year follow-up included 150 patients. The following parameters were evaluated: non-invasive keratograph break-up time (NIKBUT), tear meniscus height (TMH), and conjunctival and limbal hyperemia. We also performed staining of the surface of the eye for simulated fluorescein images, Schirmer’s test I, assessment of Meibomian gla
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Ejaz-ul-Haq, Muhammad. "Temporal Changes in Physical Signs of Estrus and Validation of Fetal Parameters for Estimation of Gestational Stage through B-mode Ultrasonography in Beetal goats." Pakistan Veterinary Journal 40, no. 04 (2020): 425–30. http://dx.doi.org/10.29261/pakvetj/2020.037.

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The current study evaluates changes in the physical signs of estrus (vulvar hyperemia, edema and mucous discharge) from their onset until ovulation, and validates fetal parameters for the estimation of gestational stage in Beetal goats. In experiment 1, temporal changes in estrus signs were monitored subjectively after the administration of two injections of PGF2α at 10-days interval and a cumulative behavioural index (BI) was calculated in goats that showed estrus response (n=7). Ovulation occurred after 18.8±2.3 h relative to peak vulvar hyperemia and edema; ovulation coincided with maximum
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Tyagi, Ravi, S. Samaduddin Ahmed, Yilun Koethe, Aleksandr Raskind, and Osman Ahmed. "Genicular Artery Embolization for Primary Knee Osteoarthritis." Seminars in Interventional Radiology 39, no. 02 (2022): 125–29. http://dx.doi.org/10.1055/s-0042-1745798.

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AbstractGenicular artery embolization (GAE) is a novel treatment for knee osteoarthritis (OA) with increasing interest and utilization worldwide. The genicular arteries are selectively embolized using microspheres with subsequent cessation of abnormal synovial hyperemia, a process believed to arrest the inflammatory changes and pain associated with OA. Current data indicate that GAE offers sustained, 6-month improvement in Western Ontario and McMaster Universities Osteoarthritis index (WOMAC) and visual analog scale scores in 80 to 85% of patients with mild to moderate OA. As GAE gains tractio
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Cooper, Leroy L., Na Wang, Alexa S. Beiser, et al. "Digital Peripheral Arterial Tonometry and Cardiovascular Disease Events: The Framingham Heart Study." Stroke 52, no. 9 (2021): 2866–73. http://dx.doi.org/10.1161/strokeaha.120.031102.

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Background and Purpose: Novel noninvasive measures of vascular function are emerging as subclinical markers for cardiovascular disease (CVD) and may be useful to predict CVD events. The purpose of our prospective study was to assess associations between digital peripheral arterial tonometry (PAT) measures and first-onset major CVD events in a sample of FHS (Framingham Heart Study) participants. Methods: Using a fingertip PAT device, we assessed pulse amplitude in Framingham Offspring and Third Generation participants (n=3865; mean age, 55±14 years; 52% women) at baseline and in 30-second inter
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Bugge, Merete Drevvatne, B. Ulvestad, B. Berlinger, L. Stockfelt, R. Olsen, and D. G. Ellingsen. "Reactive hyperemia and baseline pulse amplitude among smelter workers exposed to fine and ultrafine particles." International Archives of Occupational and Environmental Health 93, no. 3 (2019): 399–407. http://dx.doi.org/10.1007/s00420-019-01491-8.

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Abstract Objective Ambient exposure to fine particles is associated with increased cardiovascular morbidity and mortality. Associations between occupational particulate matter (PM) exposure and cardiovascular disease have been studied less. The objective of this study was to examine associations between PM exposure and endothelial function among workers in Norwegian smelters. Methods We examined endothelial function with Endo-PAT equipment after a working day (WD) and on a day off (DO) in 59 furnace workers recruited from three metal smelters in Norway. The difference in baseline pulse amplitu
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Manasyan, A. G., A. L. Dobkes, S. G. Manasyan, et al. "STUDY THE REGULATION OF PERIPHERAL BLOOD FLOW IN PATIENTSWITH CARDIOVASCULAR DISORDERS." HERALD of North-Western State Medical University named after I.I. Mechnikov 7, no. 2 (2015): 52–62. http://dx.doi.org/10.17816/mechnikov20157252-62.

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A new approach to evaluating of the state of cardiovascular system for patients with verified diagnosis of coronary heart disease (CHd), cardiac syndrome X (COAG) and hypertension (GB) by modification of known techniques of the PAT (peripheral arterial tonometry) is represented in the article. The results of studies by the method of us PAT patients with various cardiovascular disease indicate a particular clinical significance is not only the assessment of local «endothelial dysfunction» (the known value of reactive hyperemia index RHI), but also assess the nature of the Central system respons
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Hoffman, Robert P., Melanie M. Copenhaver, Danlei Zhou, and Chack-Yung Yu. "Oral glucose tolerance response curve predicts disposition index but not other cardiometabolic risk factors in healthy adolescents." Journal of Pediatric Endocrinology and Metabolism 34, no. 5 (2021): 599–605. http://dx.doi.org/10.1515/jpem-2020-0619.

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Abstract Objectives In obese adults the shape of the glucose response curve during an oral glucose tolerance test (OGTT) predicts future type 2 diabetes. Patients with an incessant increase or monophasic curves have increased risk compared to those with biphasic curves. Since type 2 diabetes is associated with increased cardiometabolic risk, we studied whether differences in OGTT response curve are associated with differences in cardiometabolic risk factors in healthy adolescents across a wide body mass index (BMI) range. Methods Sixty-nine (33F/36M), white adolescents (age: 15.2 ± 1.7 years;
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Yeo, Tsin W., Daniel A. Lampah, Retno Gitawati, et al. "Impaired nitric oxide bioavailability and l-arginine–reversible endothelial dysfunction in adults with falciparum malaria." Journal of Experimental Medicine 204, no. 11 (2007): 2693–704. http://dx.doi.org/10.1084/jem.20070819.

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Severe falciparum malaria (SM) is associated with tissue ischemia related to cytoadherence of parasitized erythrocytes to microvascular endothelium and reduced levels of NO and its precursor, l-arginine. Endothelial function has not been characterized in SM but can be improved by l-arginine in cardiovascular disease. In an observational study in Indonesia, we measured endothelial function using reactive hyperemia–peripheral arterial tonometry (RH-PAT) in 51 adults with SM, 48 patients with moderately severe falciparum malaria (MSM), and 48 controls. The mean RH-PAT index was lower in SM (1.41;
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GRANGE, ROBERT W., EIJI ISOTANI, KIM S. LAU, KRISTINE E. KAMM, PAUL L. HUANG, and JAMES T. STULL. "Nitric oxide contributes to vascular smooth muscle relaxation in contracting fast-twitch muscles." Physiological Genomics 5, no. 1 (2001): 35–44. http://dx.doi.org/10.1152/physiolgenomics.2001.5.1.35.

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During skeletal muscle contraction, NO derived from neuronal nitric oxide synthase (nNOS) in skeletal muscle fibers or from endothelial cells (eNOS) may relax vascular smooth muscle contributing to functional hyperemia. To examine the relative importance of these pathways, smooth muscle myosin regulatory light chain (smRLC) phosphorylation was assessed as an index of vascular tone in isolated extensor digitorum longus (EDL) muscles from C57, nNOS−/−, and eNOS−/− mice. The smRLC phosphorylation (in mol phosphate per mol smRLC) in C57 resting muscles (0.12 ± 0.04) was increased 3.7-fold (0.44 ±
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Conference papers on the topic "Relative hyperemia index"

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Peelukhana, Srikara V., Kranthi K. Kolli, Massoud Leesar, et al. "Distinguishing Epicardial and Microvascular Disease Using Combined Functional and Anatomical Endpoints in a Porcine Model." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80464.

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For a better treatment of coronary artery disease in a catheterization lab, detection of the relative contributions of the epicardial stenosis (ES) and concomitant microvascular disease (MVD) is important. To diagnose ES, fractional flow reserve (FFR), the hyperemic stenosis resistance index (hSRv) and to diagnose MVD, hyperemic microvascular resistance index (hMRv) have been tested in cath labs. However, for concurrent assessment of ES and MVD, functional parameter utilizing flow and pressure values, pressure drop coefficient (CDP) and combined functional and anatomical parameter, lesion flow
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