CAJ | 학술논문

目的观察慢性心力衰竭(CHF)患者在等容舒张期出现的左心室壁收缩后收缩(PSS)现象及其临床意义. 方法利用组织速度成像技术(TVI)检测60例CHF患者及对照组30名正常人的心肌运动,应用QLAB分析软件测量左心室各壁基底段和中段心肌收缩期峰值速度(V_s)、持续时间(T_s)及PSS峰值速度(V_(pss))、持续时间(T_(pss)). 结果 CHF组基底段和中间段在等容舒张期PSS的发生率均为34.44%,其中病理性PSS的发生率分别为29.44%、29.72%.对照组基底段和中间段在等容舒张期PSS的发生率分别为26.11%、20.56%,未发生病理性PSS.与对照组的生理性PSS相比,CHF组的病理性PSS峰值速度增高、持续时间延长(P<0.05). 结论 CHF患者的病理性PSS峰值速度高、持续时间长,可能是导致CHF患者左心室不同步运动的原因之一.
목적 관찰만성심력쇠갈(CHF)환자재등용서장기출현적좌심실벽수축후수축(PSS)현상급기림상의의. 방법이용조직속도성상기술(TVI)검측60례CHF환자급대조조30명정상인적심기운동,응용QLAB분석연건측량좌심실각벽기저단화중단심기수축기봉치속도(V_s)、지속시간(T_s)급PSS봉치속도(V_(pss))、지속시간(T_(pss)). 결과 CHF조기저단화중간단재등용서장기PSS적발생솔균위34.44%,기중병이성PSS적발생솔분별위29.44%、29.72%.대조조기저단화중간단재등용서장기PSS적발생솔분별위26.11%、20.56%,미발생병이성PSS.여대조조적생이성PSS상비,CHF조적병이성PSS봉치속도증고、지속시간연장(P<0.05). 결론 CHF환자적병이성PSS봉치속도고、지속시간장,가능시도치CHF환자좌심실불동보운동적원인지일.
Objective To observe the post-systolic shortening (PSS) during isovolumic relaxation phase and its clinical significance in regional myocardium in chronic heart failure (CHF) patients.MethodsLeft ventricular regional myocardium movement in 60 CHF patients (CHF group) and 30 healthy volunteers (control group) were assessed with tissue velocity imaging (TVI). QLAB software was used to measure the systolic peak velocity (V_s), regional systolic time (T_s), post-systolic shortening velocity (V_(pss)) and post-systolic shortening time (T_(pss)) at the basal and middle levels of left ventricle. Results In CHF patients, the rate of isovolumic relaxation phase PSS was 34.44% both in basal and mid segments, the rate of pathological PSS was 29.44% and 29.72%, respectively. The rate of isovolumic relaxation phase PSS in control group was 26.11% and 20.56%, respectively; none pathological PPS occured. Compared with the physiological PSS of control group, the pathological PSS of CHF group had a higher peak velocity and a longer time (P<0.05). Conclusion The pathological PSS of CHF patients has high peak velocity and long duration, which may be one of the causes leading to the asynchronous movement of left ventricle in CHF.