Arrhythmias & electrophysiology
Prevalence and clinical significance of electrocardiographic complete right bundle branch block in young 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)
Methodological detailsconsecutive individuals
- Consecutive individuals
Main finding
As reported in the abstract
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
Males vs Females
CRBBB prevalence by sex
P < 0.05
Athletes vs Non-athletes
CRBBB prevalence by athletic status
P < 0.05
Non-isolated CRBBB vs Isolated CRBBB
Pathology identified, non-isolated vs isolated CRBBB
P < 0.05
QRS ≥130 ms vs QRS <130 ms
Pathology identified, by QRS duration
P < 0.05
Original publication
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