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Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
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A novel technique to detect total occlusion in the right coronary artery using retrograde flow by transthoracic

Ryo Otsuka1, Hiroyuki Watanabe, Kumiko Hirata

  • 1Department of Internal Medicine and Cardiology, Osaka City University Medical School, Japan.

Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography
|July 9, 2005
PubMed

Insights

Transthoracic Doppler echocardiography (TTDE) can detect reverse flow in the distal right coronary artery (d-RCA) and inferior septal branches (ISB). This noninvasive method accurately diagnoses occluded right coronary artery (RCA).

Area of Science:

  • Cardiology
  • Diagnostic Imaging
  • Echocardiography

Background:

  • Right coronary artery (RCA) occlusion diagnosis can be challenging.
  • Noninvasive methods for detecting RCA occlusion are needed.

Purpose of the Study:

  • To evaluate the utility of transthoracic Doppler echocardiography (TTDE) for diagnosing occluded right coronary artery (RCA).
  • To assess the detection of reverse flow in the distal RCA (d-RCA) and inferior septal branches (ISB) as an indicator of RCA occlusion.

Main Methods:

  • Coronary angiography and TTDE were performed on 129 patients.
  • Antegrade and retrograde flow in the d-RCA and ISB were defined and assessed using TTDE.

Main Results:

  • Retrograde flow was detected in 14 out of 18 patients with occluded RCA (11 in d-RCA, 3 in ISB).
  • TTDE demonstrated 100% sensitivity and 97.8% specificity for identifying occluded RCA.

Conclusions:

  • Detection of reverse flow in the d-RCA and ISB via TTDE is a valuable noninvasive diagnostic tool.
  • TTDE offers a reliable method for diagnosing right coronary artery occlusion.
Abstract

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