Assessment of coronary flow reserve with transthoracic Doppler echocardiography: comparison with intracoronary Doppler method
Journal of Korean Medical Science
;
: 139-145, 2000.
Artigo
em Inglês
| WPRIM
| ID: wpr-18580
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 microg adenosine. TTDE was performed at baseline and after intravenous adenosine (140 microg/kgmin 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.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Velocidade do Fluxo Sanguíneo
/
Estudo Comparativo
/
Ecocardiografia Doppler
/
Modelos Lineares
/
Estudos Prospectivos
/
Reprodutibilidade dos Testes
/
Angiografia Coronária
/
Circulação Coronária
/
Doença das Coronárias
/
Frequência Cardíaca
Tipo de estudo:
Estudo observacional
/
Estudo prognóstico
Limite:
Adulto
/
Idoso
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Journal of Korean Medical Science
Ano de publicação:
2000
Tipo de documento:
Artigo
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