Complete the following ECG criteria for third-degree AV block:
Rhythm__________________________
Rate___________________________________
P waves__________________________
PR interval_________________________________
QRS duration______________________________

Question

Complete the following ECG criteria for third-degree AV block:
 Rhythm__________________________
Rate___________________________________
P waves__________________________
PR interval_________________________________
QRS duration______________________________

Quizplus · Accepted Answer

The Answer is

\begin{array}{|l|l|}\hline ext { Rhythm } & \begin{array}{l} ext { Ventricular regular; atrial regular (Ps plot through); no relationship } \ ext { between the atrial and ventricular rhythms (i.e., AV dissociation is } \ ext { present). }\end{array} \\hline ext { Rate } & \begin{array}{l} ext { The ventricular rate is determined by the origin of the escape rhythm; } \ ext { the atrial rate is greater than (and independent of) the ventricular rate; } \ ext { ventricular rate is determined by the origin of the escape rhythm. }\end{array} \\hline ext { P waves } & \begin{array}{l} ext { Normal in size and shape; some P waves are not followed by a QRS } \ ext { complex (i.e., more Ps than QRSs). }\end{array} \\hline ext { PR interval } & \begin{array}{l} ext { None. The atria and the ventricles beat independently of each other; } \ ext { therefore there is no true PR interval. }\end{array} \\hline ext { QRS duration } & \begin{array}{l} ext { Narrow or wide, depending on the location of the escape pacemaker } \ ext { and the condition of the intraventricular conduction system. }\end{array} \\hline\end{array}

Complete the Following ECG Criteria for Third-Degree AV Block