نتایج جستجو برای: ventricles heart

تعداد نتایج: 391832  

Background: The aim of the present study was to evaluate how left ventricular twist and torsion are associated with sex between sex groups of the same age.Materials and Methods: In this analytical study, twenty one healthy subjects were scanned in left ventricle basal and apical short axis views to run the block matching algorithm; instantaneous changes in the base and apex rotation angel...

LVAD is a mechanical pump supporting a weak heart function and blood flow. Sometimes, the heart may not recover fast enough to take over the pumping action immediately after surgery, in such patients a temporary support device has been employed to maintain the pumping action until the patient’s own heart recovers. This device can be considered as a temporary alternative before the process of ar...

Journal: :American journal of physiology. Heart and circulatory physiology 2005
Jochen Rose Antonis A Armoundas Yanli Tian Deborah DiSilvestre Miroslava Burysek Victoria Halperin Brian O'Rourke David A Kass Eduardo Marbán Gordon F Tomaselli

Action potential (AP) prolongation is a hallmark of failing myocardium. Functional downregulation of K currents is a prominent feature of cells isolated from failing ventricles. The detailed changes in K current expression differ depending on the species, the region of the heart, and the mechanism of induction of heart failure. We used complementary approaches to study K current downregulation ...

Journal: :Circulation research 1975
G Mancia D E Donald

To localize the areas of the cardiopulmonary region involved in tonic inhibition of the vasomotor center, anesthetized dogs were subjected to sinoaortic denervation and diaphragmatic vagotomy. Afferent vagal nerve traffic was interrupted in the neck by cooling. With the venous return taken from the venae cavae, oxygenated extracorporeally, and returned to the aorta, the heart was removed, leavi...

Journal: :Congenital Heart Disease 2022

Appropriate heart rate in a failing pulmonary ventricle remains unknown, particularly congenital disease with unique hemodynamics. A 71-year-old male repaired tetralogy of Fallot and pacemaker for sinus node dysfunction suffered from failure symptoms preserved left ventricular function. Simply changing the pacemaker’s lower 60 to 75 bpm, New York Heart Association classification improved III II...

Journal: :Indian journal of physiology and pharmacology 1965
D R Kulkarni S S Gambhir

When one is interested in the study, particularly the screening, of cardioactive agents, one needs to have the information on the effects of the concerned drug on (i) the rate, (ii) rhythm, (iii) force of contraction and (iv) output of the heart. The methods commonly used to study the effects of drugs on the heart in situ are Cushny's myocardiograph, glass cardiometry and electrocardiography (3...

Journal: :World Journal Of Advanced Research and Reviews 2023

Introduction: Subclinical hypothyroidism is defined by the combination of an elevated thyroid-stimulating hormone (TSH) level and a normal free thyroxine (T4L) level. Dilated cardiomyopathy characterized both dilation ventricles hypokinesia these ventricles. It predominantly involves left ventricle, but right ventricle frequently involved.We present two cases idiopathic dilated associated with ...

Journal: :The Journal of thoracic and cardiovascular surgery 2014
J William Gaynor Richard F Ittenbach Marsha Gerdes Judy Bernbaum Robert R Clancy Donna M McDonald-McGinn Elaine H Zackai Gil Wernovsky Susan C Nicolson Thomas L Spray

OBJECTIVES The study objectives were to compare the neurodevelopmental outcomes of preschool survivors of the Fontan procedure with those of children with congenital heart disease undergoing biventricular repair and to investigate predictors of neurodevelopmental outcome for those with single ventricle congenital heart disease, including hypoplastic left heart syndrome. METHODS Neurodevelopme...

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