應(yīng)用組織多普勒成像技術(shù)評(píng)價(jià)非體外循環(huán)冠狀動(dòng)脈搭橋術(shù)前后左心室長(zhǎng)軸功能的變化.pdf

1、coronary artery bypass and to investigate its clinical significance by using Tissue Doppler imaging. Methods We studied 48 patients with coronary artery disease before and after 1 week and 3 months off-pump coronary arte

2、ry bypass, and 35healthy volunteers matched with age. From the apical four chamber view, the image of mitral inflow was obtained and early diastolic peak flow velocity (E), late diastolic peak flow velocity (A), the rati

3、o of E/A and deceleration time of E wave (DT) were measured. The early diastolic peak myocardial motion velocity (EM), late diastolic peak myocardial motion velocity (AM), the ratio of EM/AM, systolic peak myocardial mot

4、ion velocity (SM) and displacement (Ds) and electrocardiogram Q wave to onset of SM (Q- SM) were measured by tissue Doppler imaging. Results Compared with control group, the E of OPCAB group was decreased (P＜0.01), E/A w

5、as decreased (P＜0.05), A was increased (P＜0.01). There was no difference in DT. EM and EM/AM were decreased (P＜0.01). There was no difference in AM.SM and Ds were decreased (P＜0.01). Q-SM was increased (P＜0.05). There we

6、re no change in E, A, E/A and DT before and after OPCAB. EM and EM/AM were increased after OPCAB (P＜0.01). there was no change in AM (P＞0.05) SM and Ds were increased after OPCAB (P＜0.01),Q-SM was decreased after OPCAB