| 陈云江,施仲伟,胡厚达,许燕,葛孝虹.经胸超声冠状动脉血流成像预测左前降支狭窄[J].中国医学影像技术,2005,21(3):430~432 |
| 经胸超声冠状动脉血流成像预测左前降支狭窄 |
| Prediction of left anterior descending coronary artery stenosis using transthoracic Doppler echocardiography |
| 投稿时间：2004-11-07 修订日期：2005-02-15 |
| DOI： |
| 中文关键词: 超声心动描记术 左前降支 血流速度 冠状动脉疾病 |
| 英文关键词:Echocardiography Left anterior descending coronary artery Flow velocity Coronary artery disease |
| 基金项目: |
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| 中文摘要: |
| 目的 评价经胸超声冠状动脉血流显像技术(TTDE)预测左前降支(LAD)狭窄的准确性。方法 65名临床怀疑为冠心病的患者,在静息状态下用TTDE探测LAD血流,计算舒张期血流速度与收缩期血流速度的比值(DSVR)。患者在TTDE检查后24 h内接受冠状动脉造影检查(CAG)。结果 53例患者的LAD血流得到探测和测量,其中14例有LAD显著狭窄(≥70％,狭窄组),39例无显著狭窄(对照组)。狭窄组LAD的舒张期峰值血流速度和平均血流速度与对照组无显著差异(P< |
| 英文摘要: |
| Objective To evaluate the ability of predicting left anterior descending coronary artery (LAD) stenosis by transthoracic Doppler echocardiography (TTDE). Methods Sixty-five patients suspected coronary artery disease were examined by TTDE. LAD flow was explored and the diastolic-to-systolic flow velocity ratio (DSVR) was calculated. All patients underwent coronary artery angiography within 24 hours after the TTDE examination. Results Adequate spectra Doppler recordings of coronary flow in the distal LAD were obtained in 53 patients (81.5%). Fourteen patients had significant LAD stenosis (≥70%, stenosis group) and the remaining 39 were as the control. The peak and mean diastolic LAD flow velocity were not different between the two groups (P>0.05), the peak and mean systolic LAD flow velocity in stenosis group were significantly faster than that in control group (26.4±11.8 cm/s vs 21.1±6.1 cm/s and 18.1±7.8 cm/s vs 14.7±4.0 cm/s, respectively; P<0.05). There was a significant difference in mean and peak DSVR between the two groups (1.4±0.4 vs 1.9±0.4 and 1.4±0.4 vs 2.0±0.5, respectively; P<0.0001). When mean DSVR ≤1.6 was considered to be abnormal, the sensitivity and specificity for detecting significant LAD stenosis were 85.7% and 79.5% respectively. Conclusion TTDE is a noninvasive means for detecting significant LAD stenosis. |
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