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Related Concept Videos

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Patients with hypertrophic cardiomyopathy (HCM) and left ventricular outflow tract (LVOT) obstruction who remain symptomatic despite optimal medical therapy may undergo a septal myectomy (Morrow procedure). This procedure involves excising a portion of the hypertrophied septum below the aortic valve using a heart-lung machine to improve blood flow through the LVOT. Effective preoperative and postoperative nursing management ensures successful patient outcomes, minimizes complications, and...
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Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
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Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
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Baseline Intraoperative Left Ventricular Diastolic Function Is Associated with Postoperative Atrial Fibrillation

Lisa Q Rong1, Antonino Di Franco2, Mohammed Rahouma2

  • 1Department of Anesthesiology, Weill Cornell Medicine, New York, New York.

Anesthesiology
|August 8, 2023
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Summary

Baseline left ventricular diastolic dysfunction, not left atrial function, independently predicts postoperative atrial fibrillation. Optimizing diastolic function during surgery may reduce this risk.

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Echocardiography

Background:

  • Postoperative atrial fibrillation (POAF) is a common complication after cardiac surgery.
  • The association between intraoperative cardiac function and POAF requires further elucidation.
  • Transesophageal echocardiography (TEE) can assess cardiac function during surgery.

Purpose of the Study:

  • To investigate the association of intraoperative left atrial and left ventricular diastolic function with POAF.
  • To determine if preoperative cardiac function predicts POAF in cardiac surgery patients.

Main Methods:

  • Post hoc analysis of the Posterior Left Pericardiotomy for the Prevention of Atrial Fibrillation after Cardiac Surgery (PALACS) trial.
  • Included 402 patients with available intraoperative TEE data.
  • Assessed left ventricular diastolic function using lateral e' velocity and E/e' ratios.

Main Results:

  • 57.2% of patients had intraoperative diastolic dysfunction.
  • POAF occurred in 24.6% of patients.
  • Baseline abnormal left ventricular diastolic function (OR 2.02) and pericardiotomy intervention (OR 0.46) were independently associated with POAF.

Conclusions:

  • Preoperative left ventricular diastolic dysfunction is a significant independent predictor of POAF.
  • Left atrial size and function were not independently associated with POAF.
  • Further research should explore interventions to optimize intraoperative left ventricular diastolic function to reduce POAF risk.