Page 111 - Critical Care Notes
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4223_Tab02_045-106 29/08/14 10:00 AM Page 105
105 Second-Degree AV Block—Mobitz II
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Rhythm: Regular.
or dopamine as needed.
progress to more serious block.
PR interval: Normal if P wave followed by QRS.
P wave: Present but atrial rate > ventricular rate.
QRS: Normal but QRS periodically missing, sometimes wide.
Problem with bundle of His or bundle branches. Bradycardia →↓
Conduction of P waves: QRS complexes in 2:1, 3:1, or 4:1 manner.
Management: Atropine for bradycardia, isoproterenol if very slow rate, pacemaker. Consider epinephrine
BP . Patient symptomatic. May
CV CO →↓
