CardioPerfect Workstation
PEDMEANS ECG Interpretation Module Physicians Manual
DIR 80015051 Rev. C 4 / 55
Contents
1 INTRODUCTION ...................................................................................................................... 5
1.1 Signal conditioning ................................................................................................................... 5
1.2 Pattern recognition ................................................................................................................... 6
1.3 Parameter extraction ................................................................................................................ 6
1.4 Diagnostic classification ........................................................................................................... 7
1.5 Outline of the manual ............................................................................................................... 7
1.6 References ............................................................................................................................... 8
2 CONTOUR ANALYSIS ............................................................................................................ 9
2.1 Contour parameters ................................................................................................................. 9
2.2 Wolf-Parkinson-White syndrome (WPW) .............................................................................. 11
2.3 Left Bundle Branch Block (LBBB) .......................................................................................... 12
2.4 Right Bundle Branch Block (RBBB) ....................................................................................... 13
2.5 Intraventricular conduction delay ............................................................................................ 14
2.6 Atrial hypertrophy (AH) ........................................................................................................... 14
2.7 Axis deviation ......................................................................................................................... 15
2.8 Low QRS voltage .................................................................................................................... 15
2.9 QT abnormalities .................................................................................................................... 15
2.10 Left ventricular hypertrophy (LVH) .......................................................................................... 16
2.11 Right ventricular hypertrophy (RVH) ....................................................................................... 18
2.12 Biventricular hypertrophy (BVH) ............................................................................................. 20
2.13 Myocardial infarction ............................................................................................................... 21
2.14 ST elevation ............................................................................................................................ 22
2.15 ST depression ........................................................................................................................ 22
2.16 Repolarization ......................................................................................................................... 23
2.17 Combination of statements..................................................................................................... 24
3 RHYTHM ANALYSIS ............................................................................................................. 25
3.1 Introduction ............................................................................................................................. 25
3.2 Rhythm parameters ................................................................................................................ 26
3.3 Decision tree........................................................................................................................... 26
3.4 Group 1: Rhythms with artificial pacemaker spikes ............................................................... 29
3.5 Group 2: Non-dominant QRS complexes ............................................................................... 30
3.6 Group 3: Rhythms with atrial flutter or tachycardia ................................................................. 33
3.7 Group 4: Regular rhythms with P/QRS 0.15........................................................................ 34
3.8 Group 5: Regular rhythms with 0.15 < P/QRS 1.0 and PR range > 60 ms ......................... 35
3.9 Group 6: Regular rhythms with P/QRS > 1.0 and PR range 30 ms .................................... 36
3.10 Group 7: Regular rhythms with P/QRS > 1.0 and PR range > 30 ms .................................... 37
3.11 Group 8: Irregular rhythms with P/QRS 0.15 ....................................................................... 38
3.12 Group 9: rhythms with paroxysmal acceleration or deceleration of ventricular rate ............... 38
3.13 Group 10: Irregular rhythms with 0.15 < P/QRS 0.9 and PR range 30 ms ...................... 39
3.14 Group 11: Irregular rhythms with 0.15 < P/QRS 0.9 and PR range > 30 ms ...................... 40
3.15 Group 12: Irregular rhythms with 0.9 < P/QRS 1.2 and PR range > 30 ms ........................ 41
3.16 Group 13: Irregular rhythms with P/QRS > 1.2 and PR range > 30 ms ................................. 42
3.17 Group 14: Irregular rhythms with P/QRS > 1.0 and PR range 30 ms ................................. 42
3.18 Group 15: Rhythms with constant PR interval ........................................................................ 43
4 STATEMENT INDEX ............................................................................................................. 45