Assessment of coronary flow reserve with transthoracic doppler echocardiography: Comparison with intracoronary doppler method

Soo Mi Kim, Wan Joo Shim, Hong Euy Lim, Gyo Seung Hwang, Woohyuk Song, Do-Sun Lim, Young Hoon Kim, Hong Seog Seo, Dong Joo Oh, Young Moo Ro

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

To evaluate the feasibility and usefulness of transthoracic Doppler echocardiography (TTDE) as a non-invasive method in recording distal anterior descending (LAD) coronary flow velocity, we compared coronary flow reserve (CFR) measured by TTDE with measurements by intracoronary Doppler wire (ICDW). Twenty-one patients without LAD stenosis were studied. ICDW performed at baseline and after intracoronary injection of 18 μg adenosine. TTDE was performed at baseline and after intravenous adenosine (140 μg/kg/min for 2 min). Adequate Doppler recordings of coronary flow velocities during systole were obtained in 14 of 21 study patients (67%) and during diastole in 17 (81%) patients. Baseline and hyperemic peak diastolic flow velocities measured by TTDE were significantly smaller than those obtained by ICDW (p<0.05). However, diminishing trends of diastolic and systolic velocity ratio after hyperemia were similarly observed in both methods. CFR obtained by TTDE (3.0±0.5), was higher than the value calculated by ICDW (2.5±0.4). There were significant correlations between the values obtained by the two methods (r=0.72, p<0.01). It is concluded that TTDE is a feasible method in measuring coronary flow velocity and appears to be a promising non-invasive method in evaluating CFR.

Original languageEnglish
Pages (from-to)139-145
Number of pages7
JournalJournal of Korean Medical Science
Volume15
Issue number2
Publication statusPublished - 2000 Apr 1

Keywords

  • Circulation, Coronary
  • Coronary Artery Disease
  • Echocardiography
  • Ultrasonography, Doppler

ASJC Scopus subject areas

  • Medicine(all)

Fingerprint Dive into the research topics of 'Assessment of coronary flow reserve with transthoracic doppler echocardiography: Comparison with intracoronary doppler method'. Together they form a unique fingerprint.

  • Cite this