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Myocardial contractility represents the innate ability of the heart muscle (cardiac muscle or myocardium) to contract. It is the maximum attainable value for the force of contraction of a given heart.
Cardiac contractility modulation device implantation was first successfully done in India in Royal Hospital, Trivandrum, Kerala, under the leadership of Dr. C. Bharath Chandran. Advocate Harishankar was the first person in India to get the cardiac contractility modulation device implanted.
As a larger volume of blood flows into the ventricle, the blood stretches cardiac muscle, leading to an increase in the force of contraction. The Frank-Starling mechanism allows the cardiac output to be synchronized with the venous return, arterial blood supply and humoral length, [2] without depending upon external regulation to make ...
Contractility refers to the ability for self-contraction, especially of the muscles or similar active biological tissue Contractile ring in cytokinesis; Contractile vacuole; Muscle contraction. Myocardial contractility; See contractile cell for an overview of cell types in humans.
Cardiac automaticity also known as autorhythmicity, is the property of the specialized conductive muscle cells of the heart to generate spontaneous cardiac action ...
Afterload is a determinant of cardiac output. [1] Cardiac output is the product of stroke volume and heart rate. [2] Afterload is a determinant of stroke volume (in addition to preload, and strength of myocardial contraction). [1]
Additionally, the contractility and electrophysiological environment of the cardiomyocyte are regulated by the cardiac endothelium. [ 5 ] The endocardial endothelium may also act as a kind of blood–heart barrier (analogous to the blood–brain barrier ), thus controlling the ionic composition of the extracellular fluid in which the ...
Cardiac physiology or heart function is the study of healthy, ... These secretions increase the heart rate, subsequent metabolic rate and contractility.
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