Kang Soo Jung, Kim Mira, Hwang Seo Jung, Kim Hyo Jin
Department of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
Department of Diagnostic Laboratory Medicine, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
J Cardiovasc Ultrasound. 2017 Sep;25(3):98-104. doi: 10.4250/jcu.2017.25.3.98. Epub 2017 Sep 29.
To detect progression of right ventricular (RV) systolic dysfunction (RVSD) in asymptomatic preterm children from infancy to 24-month corrected age, using velocity vector imaging (VVI).
Retrospective study comparing sequential RV longitudinal peak systolic strain (LPSS) from 24 children born at < 33 weeks of gestational age and 10 term infants recruited as controls, obtained at a mean of 4-month (first exam) and 24-month corrected age (second exam).
In 7/24 (29.2%) of preterm children, RV LPSS of < 16%, defined as RVSD, was detected at the second exam; 5/7 of these children had RV LPSS > 16% at the first exam, and only 2/7 of these children had a history of moderate or severe bronchopulmonary dysplasia.
In asymptomatic preterm children, routine echocardiographic screening using VVI could detect RVSD which could progress from 4-24 month corrected age.
使用速度向量成像（VVI）检测无症状早产儿从婴儿期到矫正年龄24个月时右心室（RV）收缩功能障碍（RVSD）的进展情况。
回顾性研究，比较24例胎龄小于33周出生的儿童和10例足月婴儿作为对照的连续右心室纵向收缩期峰值应变（LPSS），这些数据分别在平均4个月（首次检查）和矫正年龄24个月（第二次检查）时获得。
在24例早产儿中，7例（29.2%）在第二次检查时检测到右心室LPSS<16%，定义为RVSD；其中5/7的儿童在第一次检查时右心室LPSS>16%，且这些儿童中只有2/7有中度或重度支气管肺发育不良病史。
在无症状早产儿中，使用VVI进行常规超声心动图筛查可以检测到从矫正年龄4个月到24个月可能进展的RVSD。
