Table 3

Situations where temporary pacing may offer benefit after acute myocardial infarction; placement of transcutaneous electrodes may be more appropriate than transvenous pacing (class II ACC/AHA)3

Class IIa RBBB with LAFB or LPFB (new or indeterminate)
RBBB with 1st degree AV block
LBBB (new or indeterminate)
Recurrent sinus pauses (> 3 seconds) not responsive to atropine
Incessant VT, for atrial or ventricular overdrive pacing (transvenous pacing required)
Class IIb Bifascicular block of indeterminate age
New or age indeterminate isolated RBBB