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Clinical factors associated with left ventricular ejection fraction disparity in patients with left ventricular

Adnan Khalid1, Salman K Bhatti, Mohammad Al-Amoodi

  • 1Saint Luke's Mid America Heart Institute, Kansas City, Missouri, USA.

Missouri Medicine
|February 1, 2013
PubMed

Insights

Disparities in left ventricular ejection fraction (LVEF) measurements between echocardiography and nuclear imaging are common. Four clinical factors—atrial fibrillation, left ventricular hypertrophy, mitral regurgitation, and paced rhythm—were linked to these LVEF differences.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Heart Failure Management

Background:

  • Left ventricular ejection fraction (LVEF) is crucial for guiding heart failure therapies.
  • Discrepancies between echocardiography and nuclear scintigraphy for LVEF assessment are frequently observed.
  • These disparities persist even with simultaneous testing in stable patients.

Purpose of the Study:

  • To identify clinical variables associated with differences in LVEF measurements.
  • To understand factors contributing to variability in heart failure assessment techniques.
  • To improve the reliability of LVEF determination in clinical practice.

Main Methods:

  • Retrospective analysis of 119 patients with left ventricular dysfunction.
  • Comparison of LVEF values from echocardiography and nuclear imaging performed within seven days.
  • Statistical identification of clinical variables correlated with LVEF measurement disparity.

Main Results:

  • Four clinical variables were significantly associated with LVEF differences.
  • These variables included atrial fibrillation, left ventricular hypertrophy, severe mitral regurgitation, and paced rhythm.
  • The identified factors may explain a portion of the observed measurement variability.

Conclusions:

  • Specific clinical conditions influence LVEF measurements obtained by different imaging modalities.
  • Awareness of these factors can aid in interpreting LVEF results.
  • Further research may refine LVEF assessment protocols in heart failure.

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