Effect of prior beta-blocker use on in-hospital atrial fibrillation development in patients with ST-elevation myocardial infarction

ABSTRACT

Background and Aim

There are conflicting results about the early administration of beta-blockers (bb) on in-hospital mortality and arrhythmias. Here, we wanted to investigate the effects of chronic bb use on in-hospital Atrial Fibrillation (AF) development in ST-Elevation Myocardial Infarction (STEMI) patients.

Materials and Methods

A total of 814 consecutive patients with STEMI were included in the study. They were divided into two groups according to whether they are using bb on admission or not. They were followed for AF development in-hospital and predictors of AF were determined by multivariable logistic regression analysis.

Results

Of the 814 patients, 103 (12.67%) patients were already using bb, while 711 (87.3%) were not. There were no significant differences in the frequency of AF development [3 (%2.9) vs 30 (%4.2), p = .788] between the groups. Multivariable logistic regression analysis showed that left atrial (LA) diameter is the only independent predictor of in-hospital AF development.

Conclusions

Our study showed that chronic bb use does not have an effect on in-hospital AF development in STEMI patients. Nevertheless, LA diameter was found to be an independent predictor of AF.

KEYWORDS:

• Atrial fibrillation
• beta-blockers
• ST-elevation myocardial infarction
• mortality
• arrhythmias

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The authors reported there is no funding associated with the work featured in this article.