Welch Allyn Means ECG Physicians Manual for CP Series Electrocardiographs - User Manual - Manual (Page 40)

MEANS Physicians Manual
Welch Allyn
40
Alternating dominant and non-dominant complexes
Say: “bigeminal rhythm, consider escape-capture bigeminy”
if: alternating dominant/non-dominant complexes in the whole recording
and one type of non-dominant consecutive complexes
and QRS duration non-dominant complexes

120 ms
and RR preceding non-dominant < RR preceding dominant complexes
and no P preceding dominant QRS complexes
Say:
“as a bigeminal rhythm”
if: alternating dominant/non-dominant complexes in the whole recording
and failure to meet one or more of the other criteria above
Say:
“episode of bigeminal rhythm”
if: alternating dominant/non-dominant complexes for at least three consecutive times but not in the whole
recording