What is the primary function of the sinoatrial (SA) node in the heart?
Correct!
Wrong!
The SA node, located in the right atrium, is the heart's natural pacemaker. It generates electrical impulses that initiate each heartbeat.
Which part of the heart’s conduction system is responsible for delaying the electrical impulse to allow the ventricles to fill with blood before they contract?
Correct!
Wrong!
The atrioventricular (AV) node delays the electrical impulse after it has passed through the atria, ensuring that the ventricles have time to fill before contracting.
Which of the following arrhythmias is most commonly associated with an accessory pathway, such as in Wolff-Parkinson-White (WPW) syndrome?
Correct!
Wrong!
WPW syndrome involves an accessory pathway that can lead to SVT, a fast heart rhythm originating above the ventricles.
Which electrophysiological test is used to identify and map the origin of arrhythmias in the heart?
Correct!
Wrong!
EPS involves the insertion of catheters into the heart to record electrical activity and identify abnormal rhythms and their origins.
In cardiac electrophysiology, what is an "ablation" procedure primarily used for?
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Wrong!
Ablation procedures are used to treat arrhythmias by eliminating the heart tissue responsible for the abnormal signals, thereby restoring normal rhythm.