A normal or narrow QRS complex indicates that the impulse was not formed in the ventricles and is termed:
A) midventricular.
B) idioventricular.
C) supraventricular.
D) aberrant conduction.

Question

Quizplus · Accepted Answer

A supraventricular origin indicates that the impulse originated in the atria, AV node, or His-Purkinje system above the level of the ventricles, resulting in a normal or narrow QRS complex. Option A (midventricular) is not a recognized term for origin of an impulse. Option B (idioventricular) indicates that the impulse originated in the ventricles, resulting in a wide QRS complex. Option D (aberrant conduction) refers to a delay or interruption in conduction through the ventricles, resulting in a wide QRS complex.

A Normal or Narrow QRS Complex Indicates That the Impulse