机构地区:[1]长沙中南大学湘雅二医院超声科,长沙411011 [2]FetalHeartProgramme,TheChildren’SHospitalofPhiladelphia,UniversityofPennsylvaniaSchoolofMedicine,Philadelphia,PA19004,USA
出 处:《中华妇产科杂志》2011年第11期850-853,共4页Chinese Journal of Obstetrics and Gynecology
基 金:国家自然科学基金(30970838);湖南省自然科学基金(08JJ3059)
摘 要:目的探讨双胎输血综合征(TTTs)选择性胎儿镜激光凝固术(SFLP)前后供血胎儿和受血胎儿的心肌力学改变。方法2007年10月至2010年3月对25例’兀Ts孕妇行SFLP,手术前24h和手术后1周行胎儿超声心动图检查,并采集胎儿二维标准四腔心数字化图像,用速度矢量成像(VVI)软件分析心脏左室和右室长轴方向的心肌应变、收缩期应变率(SRs)和舒张期应变率(SRd)。结果与术前比较,SFLP术后,供血胎儿心胸比增大(分别为0.29±0.03、0.34±0.05,P〈0.01),卅现三尖瓣反流(7例)和心包积液(5例),心肌力学方面:左室和右室的心肌应变、SRs和SRd均明显减低[左室心肌应变:(-19.24±3.68)%、(-13.78±3.64)%,P〈0.01;左室SRs:(-2.28±0.53)、(-1.43±0.41)S~,P〈0.01;左室SRd:(1.67±0.43)、(1.15±0.70)s~,P〈0.01;右室心肌应变:(-20.20±3.19)%、(-16.10±3.07)%,P〈0.01;右室SRs:(-2.03±0.65)、(-1.72±0.38)s~,P〈0.05;右室SRd:(1.71±0.30)、(1.50±0.36)S~,P〈0.05];而受血胎儿心胸比减小(分别为0.42±0.04、0.37±0.04,P〈0.01),左室和右室的心肌应变、SRs和SRd均明显升高[左室心肌应变:(-10.62±2.72)%、(-16.46±3.23)%,左室SRs:(-1.09±0.30)、(一1.60±0.31)S~,左室SRd:(0.99±0.34)、(1.53±0.32)S一,右室心肌应变:(一11.66±4.56)%、(一17.96±3.97)%,右室SRs:(一1.26±0.39)、(一1.74±0.45)S~,右室SRd:(1.15±0.49)、(1.63±0.44)S~;P〈均0.01]。结论SFLP术后短时间内(1周),受血胎儿的心功能明显得到改善,而供血胎儿心功能则减退。Objective To investigate the changes in myocardial deformation in donor and recipient hearts in response to selective fetoscopic laser photocoagulation (SFLP) for twin-twin transfusion syndrome (TTTS). Methods Totally 25 twin pairs before 24-hour and 1 week after SFLP had fetal echocardiography and digital dynamic two-dimensional four chamber views which were interrogated off-line using velocity vector imaging (VVI) software. Global longitudinal strain (S), systolic strain rate (SRs) and diastolic strain rate (SRd) were measured off-line in the left (LV) and right (RV) ventricles. Results In the donor, SFLP resulted in increase in cardiothoracic ratio ( CTR, 0. 29 + 0. 03 versus 0. 34 + 0. 05, P 〈 0. 01 ) , with development of new onset tricupid regurgitation ( n = 7 ) and pericardia[ effusion ( n = 5 ) and worsening of all measures of myocardial deformation in both systole and diastole for LV and RV [ L^-S : ( - 19.24 _+ 3.68) % versus (-13.78_+3.64)%, P〈0.01; LV-SRs: ( -2.28-+0.53) versus ( -1.43 +_0.41) s-1, P〈 0.01; LV-SRd: (1.67-+0.43) versus (1.15-+0.70) s-l,P〈0.01; RV-S: ( -20.20-+3.19)% versus ( -16.10-+3.07)%, P〈0.01; RV-SRs: ( -2.03 -+0.65) versus ( -1.72 +0.38) s-l, P〈0.05; RV-SRd : ( 1.71 _+ 0. 30) versus ( 1.50 -+ O. 36) s - 1, p 〈 0. 05 ]. In the recipient, CTR decreased (0. 42 _+0. 04 versus 0. 37 -+ 0. 04, P 〈 0. 01 ) and all parameters for both LV and RV improved substantially [ LV-S : ( -10.62+2.72)% versus (-16.46+3.23)%, LV-SRs: (-1.09+0.30) versus (-1.60-+0.31) s-1, LV-SRd: (0.99 -+ 0.34) versus (1.53 + 0.32) s-1, RV-S: ( - 11.66 _+ 4.56)% versus ( -17.96 +3.97)%, RV-SRs: (-1.26+0.39) versus ( - 1.74 ^-0.45) s-1, RV-SRd: (1.15_+0.49) versus ( 1.63 _+ 0. 44) s- J ; all P 〈 0. 01 ~. Conclusion Myocardial deformational mechanics improve in the recipient but wo
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