Results 101 to 110 of about 59,350 (222)

Acute intermittent hypercapnic hypoxia augments left ventricular contractility

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Twenty‐four healthy adults were studied to determine the effects of an acute session of 40 min of intermittent hypercapnic hypoxia on cardiac performance. Cardiac function was assessed via echocardiography at rest and during graded stages of lower‐body negative pressure before and after the intervention to quantify load ...
Scott F. Thrall   +8 more
wiley   +1 more source

Doppler Echocardiography [PDF]

open access: yesEuropean Heart Journal, 1994
openaire   +1 more source

Pulmonary arterial mechanoreceptors modulate exercise‐induced sympathetic activation in healthy humans during moderate‐intensity hypoxic exercise

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend This randomized cross‐over trial (N = 12) addressed the hypothesis that selective reduction of pulmonary arterial pressure (i.e. manipulation of pulmonary arterial mechanoreceptor activation) during hypoxic exercise would reduce sympathetic outflow (muscle sympathetic nerve activity (MSNA)) in healthy humans.
Michiel T. Ewalts   +9 more
wiley   +1 more source

Role of reactive oxygen species in mediating peripheral hypoxic vasodilation and sympathoexcitation at high altitude

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend High‐altitude acclimatisation increases muscle sympathetic nerve activity (MSNA) via activation of the arterial chemoreflex, pulmonary arterial baroreceptors and resetting of the sympathetic vascular baroreflex. However attempting to silence these mechanisms only partially normalises MSNA, implicating other contributory ...
Liam D. Corr   +15 more
wiley   +1 more source

Trans-esophageal echocardiography for tricuspid and pulmonary valves

open access: yesAnnals of Cardiac Anaesthesia, 2009
Transesophageal echocardiography has been shown to provide unique information about cardiac anatomy, function, hemodynamics and blood flow and is relatively easy to perform with a low risk of complications.
Prabhu Mahesh
doaj  

Disseminated Invasive Aspergillosis in a Young Patient With Chronic Alcohol Use and Seemingly Preserved Immunocompetence: A Case Report

open access: yesClinical Case Reports, Volume 14, Issue 2, February 2026.
ABSTRACT Invasive aspergillosis, though typically seen in immunocompromised patients, can also affect immunocompetent individuals and mimic pulmonary malignancy. This case highlights the importance of considering fungal infections in the differential diagnosis of chronic respiratory symptoms, particularly in patients with risk factors such as heavy ...
Kumail Khandwala   +4 more
wiley   +1 more source

Method of checking the function of implanted artificial valve by pulsed Doppler echocardiography – in vitro study

open access: yesArchives of Acoustics, 2015
The usefulness of pulsed Doppler echocardiography for verifying the function of implanted Bjork-Shiley tilting disc valve prosthesis was checked experimentally in vitro. The valve was built into a physical model of central blood circulation.
Antonín GROŠPIC   +3 more
doaj  

The Impact of High‐Intensity Exercise in Normobaric Hypoxia on Right Ventricular Function in Trained and Untrained Men—An Echocardiographic Study

open access: yesComprehensive Physiology, Volume 16, Issue 1, February 2026.
A single bout of high‐intensity exercise to volitional exhaustion under acute normobaric hypoxia (~3000 m a.s.l.; FiO2 = 14.4%) does not induce greater alterations in right ventricular systolic function compared to normoxia in either trained or untrained healthy men.
Gajda Robert   +8 more
wiley   +1 more source

Inhaled Halogen‐Induced Oxidative Renal Damage and Dysfunction: A Lung Heart Kidney Axis

open access: yesComprehensive Physiology, Volume 16, Issue 1, February 2026.
Mechanisms of lung‐heart‐kidney interaction in inducing organ injury after chemical inhalation. Acute exposure to halogen gases causes extensive lung injury and acute cardiac damage leading to fatalities. Formation of highly reactive halogenated molecules in the pulmonary bed and their circulation resulting in oxidative stress and inflammation was ...
Juan Xavier Masjoan Juncos   +9 more
wiley   +1 more source

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