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The conduction system consists of specialized heart muscle cells, situated within the myocardium. [3] There is a skeleton of fibrous tissue that surrounds the conduction system which can be seen on an ECG. Dysfunction of the conduction system can cause irregular heart rhythms including rhythms that are too fast or too slow.
Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical conduction system of the heart; the cardiac cycle and cardiac output and how these interact and depend on one another.
The Tamil Nadu Dr. M.G.R. Medical University (abbr. TNMGRMU) is a government medical university situated in Guindy in the southern part of the city of Chennai, Tamil Nadu, India. It is about 7 km from the Chennai International Airport and about 13 km from the Chennai Central Railway Station .
In normal anatomy, there is only one conduit for electrical conduction from the upper chambers to the lower chambers, known as the atrioventricular node. The physiologic cardiac skeleton forms a firewall governing autonomic /electrical influence until bordering the bundle of His which further governs autonomic flow to the bundle branches of the ...
Purkinje fibers also have the ability of firing at a rate of 20–40 beats per minute if upstream conduction or pacemaking ability is compromised. [9] In contrast, the SA node in normal state can fire at 60-100 beats per minute. [9] In short, they generate action potentials, but at a slower rate than the sinoatrial node. [9]
A dromotropic agent is one which affects the conduction speed (in fact the magnitude of delay [1]) in the AV node, and subsequently the rate of electrical impulses in the heart. [2] [3] Positive dromotropy increases conduction velocity (e.g. epinephrine stimulation), negative dromotropy decreases velocity (e.g. vagal stimulation). [4]
Cardiac electrophysiology – study of the electrical properties and conduction diseases of the heart. Clinical cardiac electrophysiology –Clinical cardiac electrophysiology, is a branch of the medical specialty of cardiology and is concerned with the study and treatment of rhythm disorders of the heart. Cardiologists with expertise in this ...
The college offers a 5.5-year Bachelor of Medicine, Bachelor of Surgery (MBBS) degree, as well as a diploma in Nursing (GNM) and a diploma in Medical Lab Technology (DMLT), 4 year Bachelor of Science (B.Sc Paramedical) in Renal Dialysis technology (From 2018 onwards).In the year 2018 -2019 [2] post-graduate courses have started.