Application of two-dimensional speckle tracking on long-term prognosis of patients with acute infarcted myocardial
10.3760/cma.j.issn.1008-6315.2014.12.015
- VernacularTitle:二维斑点追踪技术在评估急性心肌梗死患者远期预后中的应用
- Author:
Jun WANG
;
Jun ZHANG
;
Zhi GUO
;
Haoran DI
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Two-dimensional Speckle tracking imaging;
Acute infarcted myocardial;
Twist
- From:
Clinical Medicine of China
2014;30(12):1281-1284
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the effect of two-dimensional speckle tracking imaging (STI) on prognosis of patients with acute infarcted myocardial(AMI).Methods Eighty patients with AMI and 30 healthy subjects were selected as our subjects.Among the AMI patients,there was 30 cases were emergency percutaneous coronary intervention (PCI),25 cases were selective PCI group and 25 cases with conservative.All were performed a 4-6 months following up after discharge from hospital.Left ventricular ejection fraction(LVEF) was measured by Simpson's.Rotation were measured in the left ventricular basal and apical short-axis views using STI.LV Peak twist (Ptw),apical Peak rotation (PAR),the basal Peak rotation (PBR),twist at aortic valve closure(AVC tw),twist at mitral valve opening(MVO tw),untwisting rate (Untw R),and half time of untwisting (HTU) were calculated.And the correlation between Ptw and LVEF was analyzed.Results Compared with the control group,the value of Ptw,PAR,AVC tw and MVO tw were significantly decreased in myocardial infarction group(F =22.481,12.899,18.923 ;P ＜ 0.05).Ptw,PAR in emergency PCI group at following up periods were (18.61 ± 8.08) ° and (12.16 ± 6.98) °,higher than that in hospital periods ((13.76 ± 6.31) °,(7.03 ±5.76)°).Ptw,PAR in selecting PCI group were (19.5 ±7.73)° and (13.4 ±7.02)°,higher than that in hospital periods((15.25 ± 6.83) °,(9.69 ±.6.72) ° ; t =-2.607,-3.104,-2.079,-1.955 ; P ＜ 0.05).Significant correlation was found between Ptw and LVEF (r =0.527,P ＜ 0.05).Conclusion Left ventricular twist can be measured using STI.LV rotation can be the quantitative index to evaluate the systolic function of LV.STI can be the new method to guide clinic diagnosis and therapy.
