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Pattern of ventricular premature contraction
| Pattern of VPC | Axis | |||
|---|---|---|---|---|
| Inferior | Superior | unD | ||
| First graders | ||||
| CRBBB | 73 (54%) | 51 | 12 | 10 |
| CLBBB | 55 (41%) | 40 | 4 | 23 |
| Undetermined | 6 (4%) | |||
| Seventh graders | ||||
| CRBBB | 94 (35%) | 58 | 24 | 12 |
| CLBBB | 155 (57%) | 122 | 8 | 23 |
| Undetermined | 21 (8%) | |||
Abbreviations: CLBBB, complete left bundle branch block; CRBBB, complete right bundle branch block; unD, undetermined; VPC, ventricular premature contraction.
