Özet:

Background: Hypertension is highly prevalent in Nigeria and globally. Intraventricular conduction blocks contribute to morbidity and mortality in hypertension. The objective of the study was to determine the prevalence and pattern of intraventricular conduction blocks in adult Nigerians with hypertensive heart disease. Materials and methods: This was a retrospective study of the remaining 12-lead electrocardiograms of adult patients with hypertensive heart disease attending the Cardiology Unit of the Federal Medical Centre (FMC), Ido-Ekiti, Nigeria. The data collected was doubly entry into SPSS 20.0 software.  Results: Resting electrocardiograms of 543 adult Nigerians with hypertensive heart disease were studied. There were 336 (61.9%) males and 207 (38.1%) females. Mean age and standard deviation of the patients was 61.3±9.7 years. About a quarter (24.7%) of the patients had intraventricular conduction blocks. Left anterior fascicular block was the most common (52.2%) occurring singly or in combinations with other blocks. Intraventricular conduction blocks were more common in patients with hypertensive heart failure (31.0% versus 23.9%, p = 0.24) although not statistically significant. Conclusion: This study shows that there is a high prevalence of intraventricular conduction blocks in adult Nigerians with hypertensive heart disease. The subset with heart failure has a higher prevalence than those without heart failure. Left anterior fascicular block is the most common type.

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