Detección de estenosis angiográfica de la arteria coronaria descendente anterior mediante ecocardiografía Doppler transtorácica: utilidad de la medida no invasiva de la reserva del flujo coronario
| Autor: | Gonzalo de la Morena Valenzuela, Manuel Villegas García, Eduardo Pinar Bermúdez, Rafael Florenciano Sánchez, Federico Soria Arcos, Ramón López Palop, Ramón Rubio Patón, Mariano Valdés Chávarri |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
medicine.medical_specialty
medicine.diagnostic_test business.industry Coronary flow reserve Blood flow Anterior Descending Coronary Artery Doppler echocardiography medicine.disease Coronary artery disease Dipyridamole Stenosis symbols.namesake Internal medicine Cardiology symbols Medicine Cardiology and Cardiovascular Medicine business Doppler effect medicine.drug |
| Zdroj: | Revista Española de Cardiología. 56:561-568 |
| ISSN: | 0300-8932 |
| DOI: | 10.1016/s0300-8932(03)76917-6 |
| Popis: | Introduction. We evaluated the feasibility of detecting blood flow in the left anterior descending coronary artery and the usefulness of measuring coronary flow reserve to diagnose significant coronary artery disease, both by means of transthoracic Doppler echocardiography using a high-frequency transducer and echo-contrast agent. Patients and method. We studied 107 patients who were scheduled for coronary arteriography for known or suspected ischemic heart disease. A Doppler signal was recorded by a pulsed wave in the distal left anterior descending artery at baseline and after dipyridamole infusion. An echo-contrast agent was administered to all patients. A coronary flow reserve equal to or higher than 1.7 was considered normal. Results. We recorded Doppler signals in the left anterior descending coronary artery of 83 patients (78%). Significant stenosis of the left anterior descending coronary artery was observed in 24 out of 83 patients (29%). The prevalence of significant stenosis was higher (62 vs 29%; p = 0.006) in patients in which no Doppler signal was detected. The sensitivity, specificity, and accuracy of abnormal coronary flow reserve in detecting significant stenosis of the left anterior descending coronary artery were 87, 74 and 78%, respectively. Conclusions. The measurement of coronary flow reserve by transthoracic Doppler echocardiography using a high-frequency transducer and echo-contrast agent is a feasible, widely available, and accurate method for detecting significant stenosis of the left anterior descending coronary artery. |
| Databáze: | OpenAIRE |
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