Results 21 to 30 of about 4,977,534 (400)

Effects of mercury on the arterial blood pressure of anesthetized rats

open access: yesBrazilian Journal of Medical and Biological Research, 1999
The available data suggests that hypotension caused by Hg2+ administration may be produced by a reduction of cardiac contractility or by cholinergic mechanisms.
L.V. Rossoni   +7 more
doaj   +1 more source

Understanding cardiopulmonary interactions through esophageal pressure monitoring

open access: yesFrontiers in Physiology, 2023
Esophageal pressure is the closest estimate of pleural pressure. Changes in esophageal pressure reflect changes in intrathoracic pressure and affect transpulmonary pressure, both of which have multiple effects on right and left ventricular performance ...
Elena Spinelli   +4 more
doaj   +1 more source

Responses to stimulation of coronary and carotid baroreceptors and the coronary chemoreflex at different ventricular distending pressures in anaesthetised dogs [PDF]

open access: yes, 2001
Stimulation of left ventricular mechanoreceptors was believed not only to exert important effects on the circulation, but also to influence the responses to baroreceptor reflexes.
Drinkhill, M.J.   +2 more
core   +1 more source

Pressure-related ventricular tachycardia

open access: yesInternational Journal of Cardiology, 1990
A case with syncope on exertion and paced heart block is presented. Non-sustained ventricular tachycardia was seen on Holter monitoring and reproduced repeatedly by either exercise or an injection of an alpha agonist, but not with provocative electrophysiology.
SIDERIS, DA, ROKAS, SG, KONTOYANNIS, DA
openaire   +4 more sources

A new approach to assess myocardial work by non-invasive left ventricular pressure–strain relations in hypertension and dilated cardiomyopathy

open access: yesEuropean Heart Journal-Cardiovascular Imaging, 2018
Aims Non-invasive left ventricular (LV) pressure-strain loop (PSL) provides a novel method of quantifying myocardial work (MW) with potential advantages over conventional global longitudinal strain (GLS) by incorporating measurements of myocardial ...
J. Chan   +7 more
semanticscholar   +1 more source

Cardioprotective effects of early intervention with sacubitril/valsartan on pressure overloaded rat hearts

open access: yesScientific Reports, 2021
Left ventricular remodeling due to pressure overload is associated with poor prognosis. Sacubitril/valsartan is the first-in-class Angiotensin Receptor Neprilysin Inhibitor and has been demonstrated to have superior beneficial effects in the settings of ...
Xiaofei Li   +4 more
doaj   +1 more source

Left ventricular active stiffness: dependency on time and inotropic state [PDF]

open access: yes, 1978
Left ventricular systolic stiffness was measured by rapidly changing ventricular volume (within 7 ms) of isovolumically contracting isolated rabbit hearts. Instantaneous pressure-volume relations were found to be linear with slopes that depended upon the
Boom, Herman B.K., Schiereck, Piet
core   +2 more sources

Pressure, Flow Rate and Operating Speed Characteristics of a Continuous Flow Left Ventricular Assist Device During Varying Speed Support

open access: yesIEEE Access, 2020
Hydraulic performance of Continuous Flow Left Ventricular Assist Devices depends on their pressure head and flow rate relations. Hydraulic characteristics of these devices are expressed by pressure head and flow rate loops in a pulsatile environment as ...
Selim Bozkurt
doaj   +1 more source

Inter-ventricular Septum Ablation for the Treatment of Hypertrophic Obstructive Cardiomyopathy [PDF]

open access: yesAdvanced Ultrasound in Diagnosis and Therapy, 2020
For symptomatic hypertrophic obstructive cardiomyopathy (HOCM), how to effectively relieve left ventricular outflow tract obstruction is of great significance.
Yuejin Wu, MS, Shaobo Duan, MD, Luwen Liu, MS, Shuaiyang Wang, MS, Shuang Xu, MS, Liuwei Hao, BS, Lianzhong Zhang, MD
doaj   +1 more source

The effects of repetitive electric cardiac stimulation in dogs with normal hearts, complete heart block and experimental cardiac arrest [PDF]

open access: yes, 1955
Direct cardiac stimulation was conducted in the open chest. In normal animals, auricular stimulation at frequencies faster than the spontaneous rate caused little change in vascular pressures or cardiac output.
GAERTNER, RA, STARZL, TE, WEBB, RC
core   +1 more source

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