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, Woo Hyuk Song, Do Sun Lim, Young Hoon Kim, Hong Seog Seo, Dong Joo Oh, Young Moo Ro

Research output: Contribution to journalReview article

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
DOIs
Publication statusPublished - 2000 Apr

Keywords

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

ASJC Scopus subject areas

  • Medicine(all)

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