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Safety and efficacy of intravenous contrast imaging in pediatric echocardiography

C J McMahon1, N A Ayres, L I Bezold

  • 1Noninvasive Imaging Cardiac Laboratory, Lillie Frank Abercrombie Section of Pediatric Cardiology, Texas Children's Hospital, Baylor College of Medicine, 6621 Fannin MC 19345-C, Houston, TX 77030, USA.

Pediatric Cardiology
|December 24, 2005
PubMed

Insights

Intravenous contrast echocardiography significantly improves endocardial border definition and left ventricular ejection fraction (LVEF) measurement in children with poor echocardiographic windows. This safe imaging technique enhances diagnostic accuracy in pediatric cardiac evaluations.

Area of Science:

  • Pediatric Cardiology
  • Medical Imaging
  • Echocardiography

Background:

  • Transthoracic echocardiography can be challenging in pediatric patients due to limited acoustic windows.
  • Accurate assessment of cardiac structure and function is crucial for diagnosing and managing pediatric heart conditions.

Purpose of the Study:

  • To evaluate the safety and efficacy of intravenous contrast echocardiography in children with suboptimal transthoracic echocardiographic windows.
  • To determine if contrast enhancement improves endocardial border delineation and left ventricular ejection fraction (LVEF) measurements.

Main Methods:

  • A prospective study involving 20 pediatric patients (median age 15) with poor echocardiographic windows.
  • Comparison of fundamental imaging (FI), harmonic imaging (HI), and harmonic imaging with Optison contrast (HI+Contrast).
  • Endocardial border definition assessed using a qualitative scoring system (0-4).

Main Results:

  • Contrast echocardiography significantly improved endocardial border definition compared to FI and HI (p < 0.001).
  • Left ventricular ejection fraction (LVEF) was measurable in 100% of patients with contrast versus 55% without.
  • Accurate diagnosis of a dyskinetic segment was achieved solely with contrast-enhanced harmonic imaging.

Conclusions:

  • Intravenous contrast echocardiography is a safe and effective tool for improving image quality in pediatric patients with difficult echocardiographic windows.
  • This technique enhances diagnostic accuracy and enables reliable LVEF determination.
  • Adverse hemodynamic effects associated with contrast agents are rare in this population.

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