M Bebbington1, T Victoria, E Danzer, J Moldenhauer, N Khalek, M Johnson, H Hedrick, N S Adzick. 1. Center for Fetal Diagnosis and Treatment, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA, USA; The Texas Fetal Center, University of Texas Health Science Center at Houston, Children's Memorial Hermann Hospital, Houston, TX, USA.
Abstract
OBJECTIVE: To compare test characteristics of ultrasound- and magnetic resonance imaging (MRI)-derived parameters in predicting newborn survival in cases of isolated left-sided congenital diaphragmatic hernia (CDH). METHODS: This was a retrospective study involving 85 fetuses with an isolated left CDH. All had detailed prenatal evaluation, prenatal care, delivery and postnatal care at a single institution. Ultrasound images were reviewed to allow calculation of the lung-to-head ratio (LHR) and the observed/expected LHR (O/E-LHR), and MRI images were reviewed to determine the observed/expected total lung volume (O/E-TLV) and the percent herniated liver (%HL). Univariable logistic regression was used to evaluate each parameter for its ability to predict survival. Receiver-operating characteristics (ROC) curves were constructed and test characteristics were determined for each parameter as a predictor of survival. RESULTS: The overall survival for all fetuses included was 65%. Pseudo-R(2) values for all parameters were similar and were statistically significant as predictors of survival, with %HL having the highest pseudo-R(2) , of 0.28. ROC curve analysis showed ultrasound-determined parameters (LHR and O/E-LHR) to have a similar area under the curve (AUC), of 0.70, whilst MRI parameters (O/E-TLV and %HL) had AUC values of 0.82 and 0.84, respectively. At ROC-curve-determined cut-off values, MRI parameters had better test characteristics than did ultrasound parameters. At a standardized 5% false-positive rate, %HL performed best, with a sensitivity of 0.54 and a specificity of 0.95. At clinically employed cut-off values, sensitivity was similar for all parameters but MRI parameters provided the best combination of sensitivity and specificity, as evidenced by better likelihood ratios. CONCLUSIONS: A variety of measures have been proposed as antenatal predictors of survival in CDH. Ultrasound parameters function at a similar level, whereas MRI-determined parameters appear to offer better predictive value.
OBJECTIVE: To compare test characteristics of ultrasound- and magnetic resonance imaging (MRI)-derived parameters in predicting newborn survival in cases of isolated left-sided congenital diaphragmatic hernia (CDH). METHODS: This was a retrospective study involving 85 fetuses with an isolated left CDH. All had detailed prenatal evaluation, prenatal care, delivery and postnatal care at a single institution. Ultrasound images were reviewed to allow calculation of the lung-to-head ratio (LHR) and the observed/expected LHR (O/E-LHR), and MRI images were reviewed to determine the observed/expected total lung volume (O/E-TLV) and the percent herniated liver (%HL). Univariable logistic regression was used to evaluate each parameter for its ability to predict survival. Receiver-operating characteristics (ROC) curves were constructed and test characteristics were determined for each parameter as a predictor of survival. RESULTS: The overall survival for all fetuses included was 65%. Pseudo-R(2) values for all parameters were similar and were statistically significant as predictors of survival, with %HL having the highest pseudo-R(2) , of 0.28. ROC curve analysis showed ultrasound-determined parameters (LHR and O/E-LHR) to have a similar area under the curve (AUC), of 0.70, whilst MRI parameters (O/E-TLV and %HL) had AUC values of 0.82 and 0.84, respectively. At ROC-curve-determined cut-off values, MRI parameters had better test characteristics than did ultrasound parameters. At a standardized 5% false-positive rate, %HL performed best, with a sensitivity of 0.54 and a specificity of 0.95. At clinically employed cut-off values, sensitivity was similar for all parameters but MRI parameters provided the best combination of sensitivity and specificity, as evidenced by better likelihood ratios. CONCLUSIONS: A variety of measures have been proposed as antenatal predictors of survival in CDH. Ultrasound parameters function at a similar level, whereas MRI-determined parameters appear to offer better predictive value.
Authors: Pramod Puligandla; Erik Skarsgard; Martin Offringa; Ian Adatia; Robert Baird; Michelle Bailey; Mary Brindle; Priscilla Chiu; Arthur Cogswell; Shyamala Dakshinamurti; Hélène Flageole; Richard Keijzer; Douglas McMillan; Titilayo Oluyomi-Obi; Thomas Pennaforte; Thérèse Perreault; Bruno Piedboeuf; S. Patricia Riley; Greg Ryan; Anne Synnes; Michael Traynor Journal: CMAJ Date: 2018-01-29 Impact factor: 8.262
Authors: Carmen Mesas Burgos; Erik G Pearson; Marcus Davey; John Riley; Huimin Jia; Pablo Laje; Alan W Flake; William H Peranteau Journal: Pediatr Res Date: 2016-07-04 Impact factor: 3.756
Authors: Kitty G Snoek; Nina C J Peters; Joost van Rosmalen; Arno F J van Heijst; Alex J Eggink; Esther Sikkel; René M Wijnen; Hanneke IJsselstijn; Titia E Cohen-Overbeek; Dick Tibboel Journal: Prenat Diagn Date: 2017-06-01 Impact factor: 3.050