Which of the following correctly describes multifocal atrial tachycardia?
A) Atrial rhythm is regular.
B) Ventricular rhythm is irregular.
C) Atrial and ventricular rhythms are regular.
D) Atrial and ventricular rhythms are irregular.

Question

Quizplus · Accepted Answer

Characteristics of multifocal atrial tachycardia:
Rhythm-Usually irregular as the pacemaker site shifts from the SA node to ectopic atrial locations or AV junction.
Rate-Faster than 100 beats/min.
P waves-Size, shape, and direction may change from beat to beat; it may be upright, inverted, biphasic, rounded, flat, pointed, notched, or buried in the QRS complex.
PR interval-Varies as the pacemaker site shifts from the SA node to ectopic atrial locations or AV junction.
QRS duration-0.11 second or less unless abnormally conducted.

Which of the Following Correctly Describes Multifocal Atrial Tachycardia