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Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
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Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

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Clinical and echocardiographic predicators of postoperative atrial fibrillation

Mohamed Ahmed Elawady1, Mohamed Bashandy2

  • 1Saud Al-Babtain Cardiac Center, Dammam, Saudi Arabia Cardiothoracic Surgery Department, Banha Faculty of Medicine, Banha University, Egypt mohamedawady@yahoo.com.

Asian Cardiovascular & Thoracic Annals
|June 3, 2014
PubMed

Insights

Older patients with hypertension are at higher risk for postoperative atrial fibrillation after coronary artery bypass grafting. Preoperative atrial electromechanical interval measurement predicts this common arrhythmia.

Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Echocardiography

Background:

  • Postoperative atrial fibrillation (POAF) is the most frequent arrhythmia following coronary artery bypass grafting (CABG), with incidence ranging from 10% to 60%.
  • Preoperative clinical factors and echocardiographic measurements, particularly the atrial electromechanical interval (AEMI), are established predictors of POAF in elective CABG patients.

Purpose of the Study:

  • To evaluate the predictive value of preoperative clinical and echocardiographic data for identifying patients at risk of developing POAF after CABG.
  • To assess the efficacy of the atrial electromechanical interval as a predictor of POAF.

Main Methods:

  • A prospective study was conducted on 192 patients undergoing elective CABG between 2010 and 2012.
  • Preoperative clinical data and echocardiographic parameters, including AEMI and tissue Doppler imaging (TDI) parameters, were collected and analyzed.
  • Statistical analysis compared patients who developed POAF with those who did not.

Main Results:

  • 18 patients (9.37%) developed POAF, experiencing longer ICU and hospital stays.
  • Patients with POAF were significantly older, had larger left atrial volumes, longer AEMI, and lower TDI systolic velocity wave amplitude compared to those without POAF.
  • A preoperative AEMI cutoff of 115 ms demonstrated 100% sensitivity and 77% specificity for predicting POAF.

Conclusions:

  • Older hypertensive patients exhibit an increased risk of developing POAF post-CABG.
  • Preoperative AEMI measurement using tissue Doppler echocardiography is a valuable tool for predicting POAF in patients undergoing CABG.
Abstract

Keywords:
Atrial fibrillationatrial functionblood flow velocitycoronary artery bypassdopplerechocardiographyleft

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