Non-invasive Assessment of Coronary Flow Velocity Reserve: A New Method Using Transthoracic Doppler

• 作 者: 杨娅 Thomas Bartel Holger Eggebrecht Loredana Latina Clemems von Birgelen Guido Caspari 王新房 Raimund Erbel
• 机 构: Institute of Cardiovascular Disease, Xiehe Hospital, Tongji Medical College, Huazhong University of
• 出 处: 华中科技大学学报(医学英德文版)
• 发表日期: 2002年2期
• 关键词: coronary flow velocity reserve Doppler echocardiography intracoronary Doppler

Summary: Transthoracic Doppler echocardiography (TTDE) allows noninvasive flow measurement in the distal left anterior descending artery (LAD). The feasibility of detecting coronary flow by con-trast-enhanced TTDE with second harmonic technique was assessed, the coronary flow velocity re-serve (CFVR) was evaluated in comparison to intracoronary Doppler flow (ICD) analysis and the CFVR after PTCA in LAD was investigated. In 77 (96 %) of 80 patients, CFVR was successfully determined with intravenous adenosine infusion. Doppler signal quality was evaluated in the first 46 patients by use of intravenous Levovist infusion and second harmonic technique. The Doppler flow was not visible in 1.patient only. CFVR determined from TTDE (2. 77 ± 0. 65) was correlated closely with those from ICD (2.88±0. 78) measurements (y=0.73x+0. 67, r=0. 87, P＜0. 001). In con clusion, TTDE is a feasible method and provides reliable data on CFVR which can be used for follow up after PTCA.