Welch Allyn Means ECG Physicians Manual for CP Series Electrocardiographs - User Manual - Manual (Page 41)

MEANS Physicians Manual
Welch Allyn
41
Isolated non-dominant complexes
Say: “premature ventricular complexes with variable coupling intervals,”
“consider ventricular parasystole”
if: QRS duration non-dominant complexes > 120 ms
and coupling interval range > 80 ms
Say:
“multiform premature ventricular complexes”
or
“premature ventricular complexes”
if: QRS duration non-dominant complexes > 120 ms
and coupling interval range

80 ms
and RR ratio < 0.9
Say:
“ventricular escapes, cause? eg AV block?”
if: QRS duration non-dominant complexes > ULN + 20 ms
and coupling interval range  80 ms
and RR ratio > 1.2
Say:
“aberrantly conducted complexes”
if: 0.9 < RR ratio

1.2
Say:
“premature supraventricular complexes with aberrant ventricular conduction and variable
coupling intervals, ” “consider supraventricular parasystole”
if: QRS duration non-dominant complexes

100 ms
and coupling interval range > 80 ms
Say:
“supraventricular escapes with aberrant ventricular conduction, cause? eg SA block?”
if: QRS duration non-dominant complexes

100 ms
and coupling interval range

80 ms
and RR ratio > 1.2
Say:
“premature supraventricular complexes with aberrant ventricular conduction”
or
“premature supraventricular complexes with variable aberrant ventricular conduction”
if: QRS duration non-dominant complexes

100 ms
and coupling interval range

80 ms
and RR ratio

0.9
Say:
“premature ventricular complexes or premature supraventricular complexes with aberrant
ventricular conduction, with variable coupling intervals ,” “consider parasystole”
if: 100 < QRS duration non-dominant complexes

120 ms
and coupling interval range > 80 ms
Say:
“premature ventricular complexes or premature supraventricular complexes with aberrant
ventricular conduction ”
or
“multiform premature ventricular complexes and/or premature supraventricular
complexes with (variable) aberrant ventricular conduction ”
if: 100 < QRS duration non-dominant complexes

120 ms
and coupling interval range

80 ms
and RR ratio

0.9
Say:
“ventricular escapes or supraventricular escapes with aberrant ventricular conduction, cause?”
if: 100 < QRS duration non-dominant complexes

120 ms
and coupling interval range

80 ms
and RR ratio > 1.2