Concept explainers
To determine: The physiological justification of the treatment for atrial fibrillation and the reason for the harmful effects of rapid atrial depolarization.
Introduction: In the new treatment of atrial fibrillation, high voltage electric impulse is administrated to control the rapid rate at senatorial (SA) node and destroy the autorhythmic cells of the atrioventricular (AV) node. After that, the ventricular pacemaker is implanted in the patient.
To determine: The reason for the destruction of the atrio-ventricular (AV) node in the procedure to treat atrial fibrillation.
Introduction: Cardiac muscles fiber of heart joins with each other to form a network. This network of muscle fiber is called myocardium. The muscles of the heart are involuntary and do not get tired. Therefore, the action potential of myocardial muscle is different from other muscle fibers.
To determine: The reason for the implantation of a pacemaker in the procedure to treat atrial fibrillation.
Introduction: Cardiac muscles fiber of the heart joins with each other to form a network. This network of muscle fiber is called myocardium. All the myocardial muscles generate action potential simultaneously to initiate electrical conduction the heart.
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Human Physiology: An Integrated Approach (8th Edition)
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