A 55-year-old man has been diagnosed with Stokes- Adams syndrome. Two minutes after the onset of syncopal attack, which of the following is the pacemaker of the hea?
Correct Answer: Purkinje fibers
Description: During a Stokes-Adams syndrome attack, total A-V block suddenly begins. After a few seconds, some pa of the Purkinje system beyond the block, usually in the distal pa of the A-V node beyond the blocked point in the node, or in the A-V bundle, begins discharging rhythmically at a rate of 15 to 40 times per minute and acting as the pacemaker of the ventricles. This phenomenon is called ventricular escape.
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now