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MR Lung Volume in Fetal Congenital Diaphragmatic Hernia: Logistic Regression Analysis—Mortality and Extracorporeal Membrane Oxygenation¹

¹ From the Departments of Clinical Radiology (K.A.B., A.K.K., D.J.D., K.W.N.) and Pediatrics (T.S.), University Hospital Mannheim, University of Heidelberg, Theodor Kutzer Ufer 1-3, 68167 Mannheim, Germany. Received June 1, 2007; revision requested August 3; revision received October 22; accepted December 21; final version accepted January 28, 2008. Address correspondence to K.A.B. (e-mail: karen.buesing@rad.ma.uni-heidelberg.de).

Purpose: To prospectively assess the results of logistic regression analysis that were based on magnetic resonance (MR) image fetal lung volume (FLV) measurements to predict survival and the corresponding need for extracorporeal membrane oxygenation (ECMO) therapy in fetuses with congenital diaphragmatic hernia (CDH) before and after 30 weeks gestation.

Materials and Methods: Written informed consent was obtained and the study was approved by the local research ethics committee. FLV was measured on MR images in 95 fetuses (52 female neonates, 43 male neonates) with CDH between 22 and 39 weeks gestation by using multiplanar T2-weighted half-Fourier acquired single-shot turbo spin-echo MR imaging. On the basis of logistic regression analysis results, mortality and the need for ECMO therapy were calculated for fetuses before and after 30 weeks gestation.

Results: Overall, higher FLV was associated with improved survival (P < .001) and decreasing probability of need for ECMO therapy (P = .008). Survival at discharge was 29.2% in neonates with an FLV of 5 mL, compared with 99.7% in neonates with an FLV of 25 mL. The corresponding need for ECMO therapy was 56.1% in fetuses with an FLV of 5 mL and 8.7% in fetuses with an FLV of 40 mL. Prognostic power was considerably lower before 30 weeks gestation.

Conclusion: Beyond 30 weeks gestation, logistic regression analysis that is based on MR FLV measurements is useful to estimate neonatal survival rates and ECMO requirements. Prior to 30 weeks gestation, the method is not reliable and the FLV measurement should be repeated, particularly in fetuses with small lung volumes, before a decision is made about therapeutic options.

© RSNA, 2008

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MR Relative Fetal Lung Volume in Congenital Diaphragmatic Hernia: Survival and Need for Extracorporeal Membrane Oxygenation

Karen A. Büsing, A. Kristina Kilian, Thomas Schaible, Claudia Endler, Regine Schaffelder, and K. Wolfgang Neff
Radiology 2008 248: 240-246. [Abstract] [Full Text] [PDF]

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				P. M. Cheng, J. W. Sayre, K. A. Busing, and J. Brade Logistic Regression Analysis of MR Fetal Lung Volume Radiology, March 1, 2009; 250(3): 957 - 958. [Full Text] [PDF]