Welch Allyn Cardioperfect Workstation, PEDMEANS ECG Interpretation Module - Physicians - User Manual - Manual (Page 39)

CardioPerfect Workstation
PEDMEANS ECG Interpretation Module Physicians Manual
DIR 80015051 Rev. C 39 / 55
3.13 Group 10: Irregular rhythms with 0.15 < P/QRS

0.9 and PR range

30
ms
First, a test is made on the alternation of RR intervals with and without a P wave to rule out a
bigeminal rhythm due to sinus rhythm with atrial or AV junctional premature complexes. If a bigeminal
rhythm is found the program halts. If not, tests are performed on each RR interval in which no P wave
has been detected. If the interval is shortened, a premature supraventricular complex is assumed; if it
is prolonged, an AV junctional escape is assumed. The shortened or prolonged RR intervals are
deleted after they have been analyzed and the program continues with the logic for rhythms with
constant PR intervals.
Say: “bigeminy: sinus rhythm with alternate premature supraventricular complexes”
if: P/QRS ratio

0.4
and test bigeminy passed
Say:
“premature supraventricular complexes”
if: test PSVC passed
and test bigeminy failed
Say:
“AV junctional escapes, cause? eg SA block or AV block?”
if: test escape passed
and test bigeminy failed
Say:
“consider premature supraventricular complexes”
if: test bigeminy failed
and test PSVC failed
and test escape failed