Is the Mean Platelet Volume a Predictive Factor for Atrial Fibrillation Developing After Coronary Artery Bypass Grafting in Elderly Patients?

Arda Aybars Pala; Yusuf Salim Urcun

doi:10.1532/hsf.3201

November 2, 2020The Heart Surgery ForumOpen Access

Is the Mean Platelet Volume a Predictive Factor for Atrial Fibrillation Developing After Coronary Artery Bypass Grafting in Elderly Patients?

View Full Paper

Ask AI

Bookmark

Share

Why the study?

Postoperative atrial fibrillation is common and linked to morbidity after CABG, but whether mean platelet volume predicts its development in elderly patients was unknown.

Does preoperative mean platelet volume predict the development of postoperative atrial fibrillation in elderly patients undergoing isolated CABG?

Structured PICO

Does preoperative mean platelet volume predict the development of postoperative atrial fibrillation in elderly patients undergoing isolated CABG?

P

Population

103 elderly patients (aged ≥ 65 years) who underwent isolated coronary artery bypass grafting (CABG) and were at preoperative sinus rhythm.

I

Intervention

Preoperative mean platelet volume (MPV) measurement

O

Outcome

Development of postoperative atrial fibrillation (PoAF)hard clinical

Higher preoperative mean platelet volume is independently associated with an increased risk of developing postoperative atrial fibrillation in elderly patients undergoing isolated CABG.

Implication

Suggests a simple, low-cost biomarker may help stratify postoperative atrial fibrillation risk in elderly.

Abstract

BACKGROUND: Postoperative atrial fibrillation (PoAF) is the most common arrhythmic complication detected after coronary artery bypass grafting (CABG). It is associated with increased morbidity and mortality, especially in elderly patients. Mean platelet volume (MPV) shows the activation of platelets effective in the inflammatory and thrombotic process. The purpose of the present study was to investigate the relations between the preoperative MPV levels and development of PoAF in isolated CABG in elderly patients. METHODS: A total of 103 elderly patients (aged ≥ 65 years), who underwent isolated CABG and were at preoperative sinus rhythm, were included in the study. Patients who did not have PoAF were identified as Group 1 (N = 74), and those with PoAF were identified as Group 2 (N = 29). RESULTS: PoAF incidence was 28.2%. Preoperative MPV level was 8.41 ± 1.13 fL in Group 1, and 9.28 ± 1.00 fL in Group 2. The difference was statistically significant (P < .001). Multivariate logistic regression analysis revealed that age, preoperative hemoglobin, and preoperative MPV were independent predictive factors for PoAF development (OR [odds ratio]: 1.149, 95% CI [confidence interval]: 1.043-1.265, P = .005; OR: 1.334, 95% CI: 1.013-1.758, P = .040; OR: 2.103, 95% CI: 1.324-3.339, P = .002, respectively). The cut-off value for MPV as the predictor of PoAF development was found to be 8.43 (sensitivity: 82.8% and specificity: 55.4%). CONCLUSION: This study showed that MPV levels are associated with PoAF development in elderly patients, and other independent predictive factors include age and preoperative hemoglobin levels for POAF development.