Q. Premature ventricular contractions are characterized by

A
Premature beats followed by a compensatory pause
B
QRS complexes, which are short and narrow
C
Inverted P waves before the QRS complexes
D
A P-wave preceding every QRS complexes
Solution:

PVCs can be distinguished from premature atrial contractions because the compensatory pause is longer following premature ventricular contractions, in addition to a difference in QRS appearance.

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