CAJ | 학술논문

目的探讨实时双多普勒成像技术测量 Tei 指数评价原发性高血压患者右心室功能的价值.资料与方法原发性高血压患者按 Ganau 分类法分为4型:正常左心室构型(Ⅰ组,16例)、向心性重构(Ⅱ组,17例)、向心性肥厚(Ⅲ组,15例)、离心性肥厚(Ⅳ组,15例);对照组22例.采用实时双多普勒成像技术在同一心动周期内测量出 a[等容收缩时间(ICT)+射血时间(ET)+等容舒张时间(IRT)]、b 射血时间(ET),计算出同步 Tei 指数.结果Ⅱ、Ⅲ、Ⅳ组右心室 Tei 指数均较对照组增加(0.38±0.06,0.49±0.07,0.67±0.12与0.28±0.02,P<0.01);Ⅲ组与Ⅰ组比较,差异有统计学意义(P<0.05);Ⅳ组与Ⅰ、Ⅱ组比较,差异均有统计学意义(P<0.01);右心室 Tei 指数与左心室Tei 指数呈正相关(r=0.879, P<0.01),与 IRT+ICT(a - b)呈正相关(r=0.629, P<0.01),与 ET(b)呈负相关(r=-0.282, P<0.01).结论高血压患者不同左心室构型其右心室功能减低的程度不同.实时双多普勒成像技术测量右室Tei 指数能简便、有效、综合评价原发性高血压患者右心室的整体功能,并能测量心律失常患者的 Tei 指数.
목적탐토실시쌍다보륵성상기술측량 Tei 지수평개원발성고혈압환자우심실공능적개치.자료여방법원발성고혈압환자안 Ganau 분류법분위4형:정상좌심실구형(Ⅰ조,16례)、향심성중구(Ⅱ조,17례)、향심성비후(Ⅲ조,15례)、리심성비후(Ⅳ조,15례);대조조22례.채용실시쌍다보륵성상기술재동일심동주기내측량출 a[등용수축시간(ICT)+사혈시간(ET)+등용서장시간(IRT)]、b 사혈시간(ET),계산출동보 Tei 지수.결과Ⅱ、Ⅲ、Ⅳ조우심실 Tei 지수균교대조조증가(0.38±0.06,0.49±0.07,0.67±0.12여0.28±0.02,P<0.01);Ⅲ조여Ⅰ조비교,차이유통계학의의(P<0.05);Ⅳ조여Ⅰ、Ⅱ조비교,차이균유통계학의의(P<0.01);우심실 Tei 지수여좌심실Tei 지수정정상관(r=0.879, P<0.01),여 IRT+ICT(a - b)정정상관(r=0.629, P<0.01),여 ET(b)정부상관(r=-0.282, P<0.01).결론고혈압환자불동좌심실구형기우심실공능감저적정도불동.실시쌍다보륵성상기술측량우실Tei 지수능간편、유효、종합평개원발성고혈압환자우심실적정체공능,병능측량심률실상환자적 Tei 지수.
Purpose To explore the clinical value of Tei index measured by real-time dual Doppler modality in evaluating right ventricular function of patients with essential hypertension. Materials and Methods According to Ganau categories, these patients were divided into four groups as following: normal left ventricle (group Ⅰ, 16 cases), concentric remodeling (group Ⅱ, 17 cases), concentric hypertrophy (groupⅢ, 15 cases), and eccentric hypertrophy (group Ⅳ, 15 cases). Twenty two cases were recruited as controls. The a value (isovolumetric contraction time + isovolumic relaxation time + ejection time) and b value (ejection time) were generated from the same cardiac cycle by dual Doppler modality. Results Right ventricular Tei index of group Ⅱ, Ⅲ, Ⅳ increased than that of the controls [(0.38±0.06), (0.49±0.07), (0.67±0.12) vs (0.28±0.02), P<0.01)]. There was a significant difference between group Ⅰ and group Ⅲ (P<0.05), and also between Ⅳ and group Ⅰ, Ⅱ (P<0.01). Tei index of right ventricular was positively correlated with that of left ventricular (r=0.879, P<0.01) and IRT+ICT (a - b) (r=0.629, P<0.01), but was negatively correlated with ejection time (r= - 0.282, P<0.01). Conclusion Hypertension patients with different left ventricular geometric patterns have different right ventricular function. Tei index measured by dual Doppler modality was easy and valuable for estimating right ventricular integral functions, even for patients with arrthymia.