Results 21 to 30 of about 5,069,987 (401)

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

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

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, 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

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

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

Synergistic Model of Cardiac Function with a Heart Assist Device [PDF]

open access: yes, 2019
The breakdown of cardiac self-organization leads to heart diseases and failure, the number one cause of death worldwide. The left ventricular pressure–volume relation plays a key role in the diagnosis and treatment of heart diseases.
Bestel, Haken, Knudsen, Simaan, Tuzun
core   +2 more sources

Left Ventricular Trabeculations Decrease the Wall Shear Stress and Increase the Intra-Ventricular Pressure Drop in CFD Simulations

open access: yesFrontiers in Physiology, 2018
The aim of the present study is to characterize the hemodynamics of left ventricular (LV) geometries to examine the impact of trabeculae and papillary muscles (PMs) on blood flow using high performance computing (HPC). Five pairs of detailed and smoothed
F. Sacco   +8 more
semanticscholar   +1 more source

FREQUENCY AND RISK FACTORS OF LEFT VENTRICULAR GEOMETRIC ABNORMALITIES IN HYPERTENSIVE PATIENTS: A STUDY BASED ON THE UPDATED CLASSIFICATION SYSTEM OF LEFT VENTRICULAR GEOMETRY

open access: yesPakistan Armed Forces Medical Journal, 2020
Objective: To determine the association between cardiovascular risk factors and the abnormalities of left ventricular geometric abnormalities. Study Design: Prospective cross-sectional, single centered study.
Fauzia Nazir   +6 more
doaj   +1 more source

Dynamic changes of age-related left ventricular hypertrophy found in spontaneously hypertensive rats [PDF]

open access: yesJichu yixue yu linchuang, 2022
Objective To study the dynamic changes of left ventricular hypertrophy with age found in spontaneously hypertensive rats (SHR). Methods Forty-five male SHR and thirty-five male Wistar Kyoto rats (WKY), which were four-week-old and specific-pathogen free,
YI Da-song, YUAN Shan-bin, ZENG Jun-yi, ZHAO Jian-qing, DING Lu, WEN Tong, NIE Jun-gang
doaj   +1 more source

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