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目的探讨多普勒超声测定左室Tei指数,评价其对老年人充血性心力衰竭的诊断价值。方法选择138例心力衰竭(心衰)或疑似心衰的老年患者,30例中年健康体检者,以超声检测其左心室Tei指数、左室射血分数(LVEF)、心室舒张早期与舒张晚期二尖瓣血流峰值流速的比值(E/A)等指标。比较老年心衰患者、老年非心衰者和中年体检者Tei指数的差异,评价上述指标对老年人心衰的诊断价值。结果老年心衰患者Tei指数较非心衰老年患者(0.77±0.14与0.45±0.10,P<0.01)和中年体检者(0.77±0.14与0.40±0.11,P<0.01)均明显延长,Tei指数对老年人心衰的综合诊断价值优于LVEF和E/A比值,其灵敏度、特异度和准确度分别为86.6%、85.4%和84.6%。结论Tei指数可作为判断老年患者心功能的指标。
Objective To explore the diagnostic value of left ventricular Tei index by Doppler ultrasound in the diagnosis of congestive heart failure in the elderly. Methods 138 elderly patients with heart failure (CHF) or suspected heart failure and 30 middle-aged healthy volunteers were enrolled. The left ventricular Tei index, left ventricular ejection fraction (LVEF), early and late diastolic Mitral flow peak velocity ratio (E / A) and other indicators. To compare the difference of Tei index in elderly patients with heart failure, elderly non-heart-failure and middle-aged physical examination, to evaluate the diagnostic value of the above indicators on the elderly with heart failure. Results The Tei index of senile heart failure patients was significantly longer than that of elderly patients with senile heart failure (0.77 ± 0.14 and 0.45 ± 0.10, P <0.01) and middle-aged subjects (0.77 ± 0.14 and 0.40 ± 0.11, P <0.01) The comprehensive diagnostic value of heart failure in the elderly is better than that of LVEF and E / A, the sensitivity, specificity and accuracy are 86.6%, 85.4% and 84.6% respectively. Conclusion The Tei index can be used as an indicator of heart function in elderly patients.