Results 131 to 140 of about 64,835 (288)

Effect of systole on coronary pressure-flow relations in the right ventricle of the dog

, 1980
Downey and Kirk's hypothesis that ventricular systole inhibits coronary blood flow by forming vascular waterfalls was examined in conscious chronically instrumented dogs by studying the effect of right ventricular systole on right coronary blood flow ...
H. S. Lowensohn, R. F. Bellamy
core   +1 more source

No difference in mean middle cerebral artery blood velocity responses between lower‐ and upper‐body unilateral resistance exercise in untrained individuals

Experimental Physiology, EarlyView.
Abstract Dynamic resistance exercise (RE) produces sinusoidal fluctuations in blood pressure that are mirrored by middle cerebral artery blood velocity (MCAv). However, whether lower‐ or upper‐body RE elicits a differential cerebrovascular response has not yet been examined.
Stephanie Korad, Toby Mündel, Blake G. Perry   +2 more
wiley   +1 more source

AURICULAR PREMATURE SYSTOLES: THE DURATION OF THE ELECTRICAL SYSTOLE [PDF]

Heart, 1946
openaire   +3 more sources

Coronary input impedance is constant during systole and diastole

, 1991
Although it is well known that coronary inflow decreases substantially during systole, the mechanism responsible for this decrease remains controversial. Knowledge of how coronary input impedance is affected by contraction can differentiate between some
R. M. Judd, R. E. Mates
core   +1 more source

Cerebral blood flow regulation, central arterial stiffness and traumatic brain injury: Effects of aerobic exercise training

Experimental Physiology, EarlyView.
Abstract Advanced age is the strongest risk factor for Alzheimer's disease and related dementias (ADRDs). Traumatic brain injury (TBI) has also been recognized as a risk factor for ADRD, potentially contributing to an earlier onset of the disease. Thus, elucidating the mechanisms underlying brain ageing and TBI is critical for developing strategies to ...
Tsubasa Tomoto, Kan Ding, C. Munro Cullum, Rong Zhang   +3 more
wiley   +1 more source

Personalized auricular vagus nerve stimulation: beat-to-beat deceleration dominates in systole-gated stimulation during inspiration - a pilot study

Frontiers in Physiology
Neuromodulation comes into focus as a non-pharmacological therapy with the vagus nerve as modulation target. The auricular vagus nerve stimulation (aVNS) has emerged to treat chronic diseases while re-establishing the sympathovagal balance and activating
Johannes Tischer, Jozsef Constantin Szeles, Eugenijus Kaniusas   +2 more
doaj   +1 more source

Passive hyperthermia increases blood circulation in specific regions, largely independent of conduit artery mechanics and cardiac performance

Experimental Physiology, EarlyView.
Abstract Passive hyperthermia increases net peripheral and systemic blood flow in humans and other animals, yet the underlying haemodynamic forces that selectively accelerate blood movement remain incompletely characterized. Wave intensity analysis offers insight into the respective contributions of the heart and the vascular system to changes in blood
Nuno Koch Esteves, Kazuhito Watanabe, Francesca R. Cavallo, Ashraf W. Khir, José González‐Alonso   +4 more
wiley   +1 more source

Identification of the individual cardiac contraction threshold during high‐frame‐rate stress echocardiography

Experimental Physiology, EarlyView.
Abstract The clinical assessment of cardiovascular function during exercise using stress echocardiography is essential for accurate cardiac diagnosis. However, normal limitations of cardiac deformation responses to increasing physical exertion remain poorly understood.
Fabian Spahiu, Max Hagemann, Michelle Ottlik, Moritz Lampkemeyer, Eric J. Stöhr   +4 more
wiley   +1 more source

Prolonged electrical systole in acute myocardial infarction

, 1980
Electrical systole duration has been studied in two groups of 23 patients (39 M and 7 F) admitted in the coronary care units of two different hospitals for documented acute myocardial infarction (AMI).
R. Sambuc, A. Jouve, PUDDU, Paolo Emilio, R. Jouve, J. Torresani   +4 more
core  

Mechanical pressure on endothelial cells mediates remote ischaemic preconditioning‐induced neuroprotection via miR‐126

Experimental Physiology, EarlyView.
Abstract Remote ischaemic preconditioning (RIPC) uses brief limb ischaemia to protect distant organs, but the mechanism of travel of the protective signal remains unclear. This study investigated whether endothelial cells (ECs) contribute to RIPC‐induced neuroprotection and the underlying mechanisms.
Xiaojie Wang, Lei Yan, Hongwei Zhu, Yifan Li, Qi Liu, Wei Li, Kerui Gong, Zhijun Zhao, Chunyang Zhang, Gang Fu, Guo Shao, Xunming Ji   +11 more
wiley   +1 more source