Observed to expected lung area to head circumference ratio at different gestational ages with various measurements in predicting indication for extracorporeal membrane oxygenation in fetuses with isolated left-sided congenital diaphragmatic hernia
10.3760/cma.j.cn113903-20210704-00604
- VernacularTitle:不同孕周及方法测量的观察-预期肺头比对先天性左侧膈疝胎儿生后符合体外膜肺氧合指征的预测价值
- Author:
Haiyu WANG
1
;
Jinrong LIU
;
Shanshan MEI
;
Qiuming HE
;
Suting XU
;
Yuanyuan GU
;
Wei ZHONG
;
Hongying WANG
Author Information
1. 广州市妇女儿童医疗中心超声科，广州 510623
- Keywords:
Hernias, diaphragmatic, congenital;
Extracorporeal membrane oxygenation;
Predictive value of tests;
Ultrasonography, prenatal
- From:
Chinese Journal of Perinatal Medicine
2022;25(1):53-58
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the prediction value of observed to expected lung area to head circumference ratio (o/e LHR), measured at different gestational age with various methods, on indication for extracorporeal membrane oxygenation (ECMO) in fetuses with isolated left-sided congenital diaphragmatic hernia (CDH).Methods:Clinical data of 40 neonates who were diagnosed with left-sided CDH and treated in Guangzhou Women and Children's Medical Center were retrospectively collected from January 2017 to May 2021. The o/e LHRs were prenatally calculated using maximum diameter and tracing method at 22-24 and 31-33 weeks of gestation. According to whether the neonates had indications for ECMO after birth or not, they were divided into ECMO ( n=12) or non-ECMO group ( n=28). Differences in the o/e LHR and general situations between the two groups were analyzed using C hi-square test, independent sample t-test, and non-parametric Mann-Whitney U test. Binary logistic regression was used to analyze the influencing factors for ECMO requirement and receiver operating characteristic (ROC) curve was used to evaluate the value of o/e LHR in predicting the indication for ECMO. Results:Both maximum diameter and tracing method suggested that the o/e LHR at 31-33 gestational weeks was lower than that at 22-24 gestational weeks [maximun diameter method: 40.4 (32.9-51.5) vs 45.1 (36.3-53.4), Z=－2.48, P=0.013; tracing method: 38.6 (33.2-47.6) vs 44.1 (35.9-51.7), Z=－3.29, P=0.001]. There was no statistical difference in o/e LHR detected at the same gestational weeks between the two methods (both P>0.05). Binary logistic regression showed that o/e LHR measured at 31-33 gestational weeks using maximum diameter method was an independent protective factor for ECMO requirement ( OR=0.873, 95% CI: 0.790-0.965, P=0.008). ROC curve analysis showed that the area under the curve for evaluating the predictive value of o/e LHR for ECMO requirement was 0.830 with the sensitivity of 83.3% and the specificity of 71.4% when the cut-off value of o/e LHR at 31-33 gestational weeks was 38.195 measured by maximum diameter method. Conclusions:The o/e LHR measured at 31-33 weeks is lower than that at 22-24 weeks of gestation by both methods. The o/e LHR measured by maximum diameter method at 31-33 weeks of gestation may be useful for predicting the ECMO indication after birth but requiring comprehensive evaluation of clinical conditions due to its insufficient predicting power.
