Page 69 - AACN Essentials of Critical-Care Nursing Pocket Handbook, Second Edition
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Pacemaker is often needed.
Treatment Atropine is not recommended.
• •
Cardiac Rhythms, ECG Characteristics, and Treatment Guide (continued)
ECG Characteristics P waves: Usually regular and precede each QRS. Periodically a P wave is not PR interval: Constant before conducted beats. The PR interval preceding the pause QRS complex: Usually wide due to associated bundle branch block. Con
Rate: Can occur at any basic rate. Rhythm: Irregular due to blocked beats. followed by a QRS complex. is the same as that following the pause.
• • • • • •
Rhythm Second-degree AV
block type II (Mobitz II)
3.12
