CAJ | 학술논문

目的：探讨二维斑点追踪成像（2D-STI）对肺动脉高压（PH）患者右室长轴收缩功能的临床应用价值。方法45例PH患者（PH组）和30例体检健康者（对照组）使用2D-STI对其行心尖四腔心切面探查，获取右室游离壁及室间隔长轴6节段的收缩期峰值应变（PSS）及收缩期峰值应变达峰时间（PSST）。结果 PH组右室游离壁的基底段、中间段、心尖段及室间隔中间段、心尖段PSS均小于对照组（均P＜0．05），而两组室间隔基底段的PSS差异无统计学意义。 PH组右室长轴PSST为（73.22±37.64）ms，较对照组（38.13±17.12）ms延长（P＜0．05）。结论2D-STI技术可准确评估右室整体及节段收缩功能及同步性，是评价右室功能简便、快捷的新方法。
목적：탐토이유반점추종성상（2D-STI）대폐동맥고압（PH）환자우실장축수축공능적림상응용개치。방법45례PH환자（PH조）화30례체검건강자（대조조）사용2D-STI대기행심첨사강심절면탐사，획취우실유리벽급실간격장축6절단적수축기봉치응변（PSS）급수축기봉치응변체봉시간（PSST）。결과 PH조우실유리벽적기저단、중간단、심첨단급실간격중간단、심첨단PSS균소우대조조（균P＜0．05），이량조실간격기저단적PSS차이무통계학의의。 PH조우실장축PSST위（73.22±37.64）ms，교대조조（38.13±17.12）ms연장（P＜0．05）。결론2D-STI기술가준학평고우실정체급절단수축공능급동보성，시평개우실공능간편、쾌첩적신방법。
Objective To assess right ventricular (RV) systolic function of long axis using two dimension speckle-tracking imaging(2D-STI). Methods Forty-five patients with pulmonary hypertension(PH) underwent 2D-STI in apical 4-champer view,peak systolic strain(PSS) and time to peak systolic strain(PSST) for the six segments of longitudinal of RV free wall and septal wall were calculated,meanwhile 35 normal adults were analyzed as controls. Results PSS of RV free wall in patiens with PH were lower than that in normal controls of basal,middle and apical segments(all P<0.05). PSS of septal wall were lower than that in normal controls of middle apical segments in PH group (all P<0.05),but basal segments had no difference between two groups. Large mechanical dyssynchrony of RV longitudinal was shown between two groups:PSST(73.22±37.64)ms vs (38.13 ±17.12)ms (P<0.05). Conclusion 2D-STI can be used as a useful technique in assessing right ventricular global and segments systolic function and synchronism.