Sinoatrial exit block occurs when the action potential initiated by the sinoatrial node is inhibited or completely blocked before it is able to leave the SA node and reach the atrium, and thus no ...
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How do pacemakers and defibrillators work? A cardiologist explains how they interact with the electrical system of the heartFirst, the sinoatrial, or SA, node sets your “resting” heart rate, usually somewhere between 60 and 100 beats per minute. This is the base effort needed to circulate enough blood to sustain ...
Tachycardia-bradycardia syndrome (i.e. pauses after converting to sinus rhythm) Severe sinus bradycardia Sinus pauses/sinus arrest Sinoatrial nodal exit block Chronotropic incompetence (failure of ...
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