Results 121 to 130 of about 345,154 (283)

Changes in hemodynamics of pulmonary artery using Flowire in a canine model of acute pulmonary thromboembolism

Animal Models and Experimental Medicine
Background Pulmonary hypertension (PH) is a life‐threatening condition that can be triggered by pulmonary thromboembolism (PTE), which causes abrupt increases in pulmonary artery pressure and resistance.
Tomohiko Yoshida, Katsuhiro Matsuura, Akiko Uemura, Ryou Tanaka   +3 more
doaj   +1 more source

Preoperative Longitudinal Left Ventricular Function by Tissue Doppler Echocardiography at Rest and During Exercise Is Valuable in Timing of Aortic Valve Surgery in Male Aortic Regurgitation Patients

, 2010
Background: The aim of this study was to evaluate if left ventricular (LV) systolic function by tissue Doppler echocardiography at rest and during exercise preoperatively could predict postoperative LV function and thereby be useful in the timing of ...
Nylander, Eva, Tamas, Eva, Helin Forsberg,, Lena,, Nylander, Eva,, Helin Forsberg,, Lena, Tamas, Eva,   +5 more
core   +1 more source

Cerebral haemodynamic responses to inspiratory muscle work

Experimental Physiology, EarlyView.
Abstract Fatiguing inspiratory work has been shown to evoke a sympathetically mediated reflex that has systemic cardiovascular consequences, including increases in heart rate and blood pressure and a decrease in resting limb vascular conductance. Moreover, the response to this reflex appears to be attenuated in females compared with males.
Andrew H. Ramsook, Morgan A. Hughes, Wyatt W. Pruter, Kevin L. Webb, Ali Ataie, Chad C. Wiggins, Gabrielle A. Dillon, Sarah E. Baker, Michael J. Joyner   +8 more
wiley   +1 more source

Sex differences in cerebral blood flow and cardiac function in response to exercise in the heat

Experimental Physiology, EarlyView.
Abstract We investigated the effect of exercising in hot conditions on cerebral blood flow and systolic left ventricular (LV) function in males and females, to explore sex differences. The experimental condition consisted of walking on a treadmill at 5 km/h and 2% incline, inside a heat chamber at 40°C (50% relative humidity), for 90 min.
João Carlos Locatelli, Juliene G. Costa, Kristanti W. Wigati, Jesse L. Criddle, Julie J. Collis, Xingwei Xu, Louise H. Naylor, Howard H. Carter, Shane K. Maloney, Robert A. McLaughlin, Andrew Haynes, Helen Jones, Keith George, Daniel J. Green   +13 more
wiley   +1 more source

Conventional Two-Dimensional Echocardiography and Doppler Echocardiography Measures.

, 2015
Values shown are Mean ± SD. LA, left atrium; LV, left ventricular; RA, right atrium; RV, right ventricular; E, early diastolic flow velocity; A, late diastolic flow velocity; S’, systolic annular velocity; E’, early diastolic annular velocity; A’, late ...
Yan Zhang (8098), Yuling Li (290240), Yonghuai Wang (694584), Chunyan Ma (170758), Jun Yang (2084), Zhengyu Guan (694585), Shuang Liu (8449)   +6 more
core   +1 more source

Cerebrovascular regulation during heat stress

Experimental Physiology, EarlyView.
Abstract Given that the brain is a highly metabolic organ and is enclosed by the skull, effective regulation of cerebral blood flow (CBF), not only for oxygen and nutrients supply but also as a means of convective heat exchange, is critical for preventing excessive elevations in brain temperature.
Kanoko Ito, Manabu Shibasaki
wiley   +1 more source

Tissue Doppler echocardiography predicts long-term cardiovascular mortality: the Anglo-Scandinavian Cardiac Outcomes Trial (ASCOT) legacy 20-year follow-up study

Open Heart
Background Left ventricular diastolic function as assessed by tissue Doppler echocardiography predicts cardiovascular event rates at 4 years of follow-up in patients with hypertension.
Simon Thom, Alice Stanton, Jamil Mayet, Amit Kaura, Darrel Francis, Anoop SV Shah, Andrew Sharp, Alun D Hughes, Neil R Poulter, Anenta Ratneswaren, Tong Wu, Somayeh Rostamian, Devan Wasan, PS Sever   +13 more
doaj   +1 more source

Pulmonary arterial mechanoreceptors mediate sustained sympathoexcitation during high altitude hypoxia in humans

Experimental Physiology, EarlyView.
Abstract Sympathetic nervous system activation is a hallmark of high‐altitude hypoxia, yet the afferent mechanisms remain incompletely defined. We examined the relative contributions of pulmonary arterial mechanoreceptors and carotid chemoreceptors – two excitatory pathways co‐activated by hypoxia – to sustained sympathoexcitation at altitude.
Michiel T. Ewalts, Lydia L. Simpson, Jack S. Talbot, Elliott J. Jenkins, Travis D. Gibbons, Connor A. Howe, Lauren E. Maier, Emily R. Vanden Berg, Alex M. Williams, Philip N. Ainslie, Samuel J. Oliver, Craig D. Steinback, Mike Stembridge, Jonathan P. Moore   +13 more
wiley   +1 more source

Cardiovascular Involvement in Behçet's Disease

The Turkish Journal of Gastroenterology, 2015
Objectives: This study aims to evaluate left and right ventricular functions at rest by pulsed-wave Doppler and tissue Doppler echocardiography methods in patients with Behçet’s disease (BD) without overt cardiovascular disease, and compare with age and
Tolga AKSU, Erdem GÜLER, Nurcan ARAT, Ali ZORLU, Birhan YILMAZ, Ümit GÜRAY, Omaç TÜFEKÇİOĞLU, Halil KISACIK   +7 more
doaj  

Prevalence of mechanical dyssynchrony in patients with heart failure and preserved left ventricular function (a report from the Belgian Multicenter registry on dyssynchrony)

, 2005
The present study evaluated the prevalence of mechanical inter- and intraventricular dyssynchrony in patients with heart failure and preserved left ventricular (LV) ejection fraction (LVEF). We studied 138 patients with heart failure (age 67 +/- 11 years;
Decoodt, P, Van Camp, G., van de Veire, Nico R., Gillebert, Thierry, Hoffer, E, VAN CAMP, G, Vaerenberg, M, De Sutter, Johan, Muyldermans, L, de Backer, Tine, Gillebert, Thierry C., GABRIEL, L, De Backer, T, Gabriel, Laurence, Muyldermans, Luc, Vaerenberg, Marc, de Veire, NRV, De Sutter, J, Paelinck, Bernard, Decoodt, Pierre, Gillebert, TC, Hoffer, Etienne, Van Camp, Guy, Paelinck, B, Van de Veire, Nico   +24 more
core   +1 more source