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Prenatal sonographic features of isolated hypoplastic left heart syndrome

Theera Tongsong1, Rekwan Sittiwangkul, Surapan Khunamornpong

  • 1Department of Obstetrics and Gynecology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.

Journal of Clinical Ultrasound : JCU
|October 1, 2005
PubMed

Insights

Hypoplastic left heart syndrome (HLHS) is a severe congenital heart defect. Prenatal ultrasound can identify key features like a small left ventricle and aorta, aiding early diagnosis.

Area of Science:

  • Cardiology
  • Prenatal Diagnosis
  • Medical Imaging

Background:

  • Hypoplastic left heart syndrome (HLHS) encompasses fetal conditions characterized by underdeveloped left ventricle and outflow tract.
  • Early and accurate diagnosis is crucial for managing HLHS outcomes.

Observation:

  • This series focused on sonographic prenatal features of isolated HLHS in 5 cases.
  • Key findings include a small left ventricle, abnormal mitral valve function, and a hypoplastic ascending aorta.

Findings:

  • Retrograde flow in the transverse aortic arch indicates insufficient systemic output.
  • Tricuspid regurgitation is frequent, correlating with hydrops development.
  • Other indicators include left ventricular hyperechoic endocardium and increased nuchal translucency.

Implications:

  • Fetal echocardiography, particularly the 4-chamber view, is effective for detecting HLHS.
  • Identifying these sonographic markers enables timely intervention and improved patient management.

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