Arrhythmias & electrophysiologyCohort study
Prevalence and clinical significance of electrocardiographic complete right bundle branch block in young individuals
- Cohort study
- consecutive individuals
Authors' conclusion
The prevalence of CRBBB in young individuals was 0.1% and was more prevalent in males and in athletes. CRBBB-related conditions were identified in 5% of individuals and were more common in individuals with non-isolated CRBBB and more pronounced intraventricular conduction delay (QRS duration of ≥130 ms).
Study context
- Population
- Young individuals aged 14–35 years undergoing cardiovascular assessment (health questionnaire, ECG, clinical consultation, selective echocardiography), 2008–2018mean follow-up 7.3 ± 2.7 years
- Participants
- 104,369 individuals
- Outcome
- Prevalence and significance of complete right bundle branch block (CRBBB)
Main finding
As reported in the abstract
CRBBB prevalence
Complete right bundle branch block (CRBBB) identified
154 (0.1%)
CRBBB-related cardiac conditions among CRBBB (4 atrial septal defect, 1 Brugada syndrome, 1 progressive cardiac conduction disease, 1 AF)
7 (5%)
Observational data: associations, not effects.
Further findings
| Outcome | Values | P value |
|---|---|---|
| CRBBB prevalence by sex | Males 0.20% · Females 0.06% | P < 0.05 |
| CRBBB prevalence by athletic status | Athletes 0.25% · Non-athletes 0.14% | P < 0.05 |
| Pathology identified, non-isolated vs isolated CRBBB | Non-isolated CRBBB 14% · Isolated CRBBB 1% | P < 0.05 |
| Pathology identified, by QRS duration | QRS ≥130 ms 10% · QRS <130 ms 1% | P < 0.05 |
Original publication
Prevalence and clinical significance of electrocardiographic complete right bundle branch block in young individuals. Eur J Prev Cardiol. Published 27 February 2024. doi:10.1093/eurjpc/zwae082
Summarised from the published abstract; every number is checked against it