Impaired conduction between the atrium and the ventricle through the AV node or His–Purkinje system
1st-degree AV block:
Prolonged conduction through the AV node
Ventricular impulses ar...
Type I 2nd-degree AV block:
Type II 2nd-degree AV block and 3rd-degree block:
Transcutaneous pacing for unstable Type II 2nd- or 3rd-degree block
Avoid with Type II 2nd-degree block because it may precipitate complete heart block
Contraindicated in ...
Type II 2nd-degree block
Obtaining an EKG rapidly in symptomatic patients is paramount.
Once a high-degree AV block has been diagnosed, initiate transcutaneous pacing immediately.
Obtain a complete history f...
Harrigan RA, Chan TC, Moonblatt S, et al. Temporary transvenous pacemaker placement in the emergency department. J Emerg Med. 2007;32(1):105–111.
Olgin JE, Zipes DP. Speci...
426.10 Atrioventricular block, unspecified
426.11 First degree atrioventricular block
426.13 Other second degree atrioventricular block
426.0 Atrioventricular block, complete
426.12 Mobitz (type...
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