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Prayer F, Watzenböck ML, Heidinger BH, Rainer J, Schmidbauer V, Prosch H, Ulm B, Rubesova E, Prayer D, Kasprian G. Fetal MRI radiomics: non-invasive and reproducible quantification of human lung maturity. Eur Radiol 2023; 33:4205-4213. [PMID: 36604329 PMCID: PMC10182107 DOI: 10.1007/s00330-022-09367-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 10/26/2022] [Accepted: 12/05/2022] [Indexed: 01/07/2023]
Abstract
OBJECTIVES To assess the reproducibility of radiomics features extracted from the developing lung in repeated in-vivo fetal MRI acquisitions. METHODS In-vivo MRI (1.5 Tesla) scans of 30 fetuses, each including two axial and one coronal T2-weighted sequences of the whole lung with all other acquisition parameters kept constant, were retrospectively identified. Manual segmentation of the lungs was performed using ITK-Snap. One hundred radiomics features were extracted from fetal lung MRI data using Pyradiomics, resulting in 90 datasets. Intra-class correlation coefficients (ICC) of radiomics features were calculated between baseline and repeat axial acquisitions and between baseline axial and coronal acquisitions. RESULTS MRI data of 30 fetuses (12 [40%] females, 18 [60%] males) at a median gestational age of 24 + 5 gestational weeks plus days (GW) (interquartile range [IQR] 3 + 3 GW, range 21 + 1 to 32 + 6 GW) were included. Median ICC of radiomics features between baseline and repeat axial MR acquisitions was 0.92 (IQR 0.13, range 0.33 to 1), with 60 features exhibiting excellent (ICC > 0.9), 27 good (> 0.75-0.9), twelve moderate (0.5-0.75), and one poor (ICC < 0.5) reproducibility. Median ICC of radiomics features between baseline axial and coronal MR acquisitions was 0.79 (IQR 0.15, range 0.2 to 1), with 20 features exhibiting excellent, 47 good, 29 moderate, and four poor reproducibility. CONCLUSION Standardized in-vivo fetal MRI allows reproducible extraction of lung radiomics features. In the future, radiomics analysis may improve diagnostic and prognostic yield of fetal MRI in normal and pathologic lung development. KEY POINTS • Non-invasive fetal MRI acquired using a standardized protocol allows reproducible extraction of radiomics features from the developing lung for objective tissue characterization. • Alteration of imaging plane between fetal MRI acquisitions has a negative impact on lung radiomics feature reproducibility. • Fetal MRI radiomics features reflecting the microstructure and shape of the fetal lung could complement observed-to-expected lung volume in the prediction of postnatal outcome and optimal treatment of fetuses with abnormal lung development in the future.
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Affiliation(s)
- Florian Prayer
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria
| | - Martin L Watzenböck
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria
| | - Benedikt H Heidinger
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria
| | - Julian Rainer
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria
| | - Victor Schmidbauer
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria
| | - Helmut Prosch
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria
| | - Barbara Ulm
- Department of Obstetrics and Gynecology, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Vienna, Austria
| | - Erika Rubesova
- Department of Pediatric Radiology, Lucile Packard Children's Hospital at Stanford, Stanford University, 725 Welch Road, Stanford, CA, 94305, USA
| | - Daniela Prayer
- Imaging Bellaria, Bellariastrasse 3, 1010, Vienna, Austria
| | - Gregor Kasprian
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria.
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Masahata K, Yamoto M, Umeda S, Nagata K, Terui K, Fujii M, Shiraishi M, Hayakawa M, Amari S, Masumoto K, Okazaki T, Inamura N, Toyoshima K, Koike Y, Furukawa T, Yazaki Y, Yokoi A, Endo M, Tazuke Y, Okuyama H, Usui N. Prenatal predictors of mortality in fetuses with congenital diaphragmatic hernia: a systematic review and meta-analysis. Pediatr Surg Int 2022; 38:1745-1757. [PMID: 36102982 DOI: 10.1007/s00383-022-05232-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/05/2022] [Indexed: 10/14/2022]
Abstract
PURPOSE This study aimed to evaluate prenatal predictors of mortality in fetuses with congenital diaphragmatic hernia (CDH). METHODS A systematic literature search was performed to identify relevant observational studies that evaluated the ability of lung-to-head ratio (LHR), observed-to-expected LHR (o/e-LHR), observed-to-expected total fetal lung volume (o/e-TFLV), lung-to-thorax transverse area ratio (L/T ratio), intrathoracic herniation of the liver and the stomach, and side of diaphragmatic hernia, using a threshold for the prediction of mortality in fetuses with CDH. Study quality was assessed using the QUADAS-2 tool. Hierarchical summary receiver operating characteristic curves were constructed. RESULTS A total of 50 articles were included in this meta-analysis. The QUADAS-2 tool identified a high risk of bias in more than one domain scored in all parameters. Among those parameters, the diagnostic odds ratio of mortality with o/e-LHR < 25%, o/e-TFLV < 25%, and L/T ratio < 0.08 were 11.98 [95% confidence interval (CI) 4.65-30.89], 11.14 (95% CI 5.19-23.89), and 10.28 (95% CI 3.38-31.31), respectively. The predictive values for mortality were similar between the presence of liver herniation and retrocardiac fetal stomach position. CONCLUSIONS This systematic review suggests that o/e-LHR, o/e-TFLV, and L/T ratio are equally good predictors of neonatal mortality in fetuses with isolated CDH.
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Affiliation(s)
- Kazunori Masahata
- Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Japan.
| | - Masaya Yamoto
- Department of Pediatric Surgery, Shizuoka Children's Hospital, Shizuoka, Japan
| | - Satoshi Umeda
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Kouji Nagata
- Department of Pediatric Surgery, Kyushu University, Fukuoka, Japan
| | - Keita Terui
- Department of Pediatric Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Makoto Fujii
- Department of Health Science, Graduate School of Medicine, Osaka University, Suita, Japan
| | | | - Masahiro Hayakawa
- Division of Neonatology, Center for Maternal-Neonatal Care, Nagoya University Hospital, Nagoya, Japan
| | - Shoichiro Amari
- Division of Neonatology, National Center for Child Health and Development, Tokyo, Japan
| | - Kouji Masumoto
- Department of Pediatric Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Tadaharu Okazaki
- Department of Pediatric Surgery, Juntendo University Urayasu Hospital, Urayasu, Japan
| | - Noboru Inamura
- Department of Pediatrics, Kindai University Faculty of Medicine, Osaka-Sayama, Japan
| | - Katsuaki Toyoshima
- Departments of Neonatology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Yuki Koike
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Japan
| | - Taizo Furukawa
- Department of Pediatric Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yuta Yazaki
- Department of Pediatric General and Urogenital Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Akiko Yokoi
- Departments of Pediatric Surgery, Kobe Children's Medical Center, Kobe, Japan
| | - Masayuki Endo
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yuko Tazuke
- Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hiroomi Okuyama
- Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Noriaki Usui
- Department of Pediatric Surgery, Osaka Women's and Children's Hospital, Izumi, Japan
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Wiggins E, Zecevic M, Hippe DS, Moshiri M, Winter T, Dubinsky TJ. Magnetic Resonance Prediction of Lung Maturity in Fetuses With Congenital Diaphragmatic Hernia. Ultrasound Q 2021; 37:272-277. [PMID: 34478427 DOI: 10.1097/ruq.0000000000000567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT To determine if lung to liver MR T2 signal ratio is predictive of neonatal outcome in fetuses with congenital diaphragmatic hernia (CDH).After Interal Review Board approval, the PACS systems at the University of Washington and University of Utah were searched for cases having an in utero fetal MR examination diagnostic of CDH. Inclusion criteria were at least 1 prior ultrasound demonstrating a CDH and an MR obtained within 1 week of that prior ultrasound.A total of 69 patients from the University of Utah and 13 from the University of Washington satisfied the inclusion criteria for a total of 82. After adjusting for gestational age and contralateral lung volume, there was little apparent association between contralateral lung to liver MR T2 signal and 5-minute Apgar score and neonatal mortality When considering neonatal Apgar and mortality, increasing contralateral lung volume was significantly associated with lower risk (hazard ratio, 0.40 per doubling; 95% confidence interval, 0.24-0.69; P = 0.001) as expected.Our data demonstrate that the lung to liver MR signal ratio was not predictive of outcome. The measurement of contralateral lung area, and gestational age at the time of the examination (time of diagnosis) are still the best predictors of poor neonatal outcome.
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Affiliation(s)
- Eve Wiggins
- Department of Radiology, University of Washington School of Medicine, Seattle WA
| | - Mladen Zecevic
- Department of Radiology, University of Washington School of Medicine, Seattle WA
| | - Dan S Hippe
- Department of Radiology, University of Washington School of Medicine, Seattle WA
| | - Mariam Moshiri
- Department of Radiology, University of Washington School of Medicine, Seattle WA
| | - Tom Winter
- Department of Radiology, University of Utah, Salt Lake City, UT
| | - Theodore J Dubinsky
- Department of Radiology, University of Washington School of Medicine, Seattle WA
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Abstract
Because congenital diaphragmatic hernia (CDH) is characterized by a spectrum of severity, risk stratification is an essential component of care. In both the prenatal and postnatal periods, accurate prediction of outcomes may inform clinical decision-making, care planning, and resource allocation. This review examines the history and utility of the most well-established risk prediction tools currently available, and provides recommendations for their optimal use in the management of CDH patients.
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Affiliation(s)
- Tim Jancelewicz
- Le Bonheur Children's Hospital, University of Tennessee Health Science Center, 49 North Dunlap St., Second Floor, Memphis, TN, 38112, USA.
| | - Mary E Brindle
- Alberta Children's Hospital, University of Calgary, Calgary, Alberta, Canada
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Value of Fetal MRI in the Era of Fetal Therapy for Management of Abnormalities Involving the Chest, Abdomen, or Pelvis. AJR Am J Roentgenol 2018. [DOI: 10.2214/ajr.17.18948] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Shieh HF, Barnewolt CE, Wilson JM, Zurakowski D, Connolly SA, Estroff JA, Zalieckas J, Smithers CJ, Buchmiller TL. Percent predicted lung volume changes on fetal magnetic resonance imaging throughout gestation in congenital diaphragmatic hernia. J Pediatr Surg 2017; 52:933-937. [PMID: 28385427 DOI: 10.1016/j.jpedsurg.2017.03.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 03/09/2017] [Indexed: 01/08/2023]
Abstract
PURPOSE Percent predicted lung volume (PPLV)<15% on fetal MRI predicts high-risk CDH. Potential changes in PPLV throughout gestation and impact on risk stratification are unknown. We reviewed CDH patients with serial fetal MRIs to follow PPLV and determine correlation with postnatal outcomes. METHODS CDH patients with serial fetal MRIs from 2005 to 2015 were included. We recorded prenatal MRI gestational age (GA) and PPLV, postnatal ECMO use, and survival. Data were analyzed by logistic regression and Fisher's exact test. RESULTS 57 patients had 127 fetal MRI studies. PPLV decreased from mean 25.4% to 19.6% between GA 22.1 and 32.6weeks. A steeper decline in PPLV, regardless of final PPLV, was independently predictive of higher ECMO use (p=0.046) and death (p=0.045). All patients with first PPLV<15% remained high-risk with poor outcomes. Of those with first PPLV>15%, 31% dropped below 15%, having similar ECMO use as the high-risk cohort, but trending toward greater survival (p=0.09). Those with first and final PPLV>15% had significantly less ECMO use (p=0.015) and greater survival (p<0.001) than the high-risk cohort. CONCLUSIONS On average, PPLV decreases throughout gestation in fetuses with CDH. Serial MRI is recommended for those with initial PPLV>15%, as clinical outcomes tend to mirror the lowest PPLV. TYPE OF STUDY Treatment study LEVEL OF EVIDENCE: III.
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Affiliation(s)
- Hester F Shieh
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Carol E Barnewolt
- Advanced Fetal Care Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States; Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Jay M Wilson
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States; Advanced Fetal Care Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - David Zurakowski
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States; Department of Anesthesia, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Susan A Connolly
- Advanced Fetal Care Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States; Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Judy A Estroff
- Advanced Fetal Care Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States; Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Jill Zalieckas
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States; Advanced Fetal Care Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - C Jason Smithers
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States; Advanced Fetal Care Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Terry L Buchmiller
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States; Advanced Fetal Care Center, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States.
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Sheikh F, Akinkuotu A, Clark SJ, Zamora IJ, Cass DL, Olutoye O, Lee TC. Assessment of quality of life outcomes using the pediatric quality of life inventory survey in prenatally diagnosed congenital diaphragmatic hernia patients. J Pediatr Surg 2016; 51:545-8. [PMID: 26703434 DOI: 10.1016/j.jpedsurg.2015.11.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Revised: 11/05/2015] [Accepted: 11/08/2015] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Congenital diaphragmatic hernia patients can have significant postnatal morbidity. To date, there has been no quality of life (QOL) study in a prenatally diagnosed CDH patient population, assessing prenatal disease severity and QOL. The purpose of this pilot study was to assess the QOL in a single institution fetal center CDH experience. METHODS The study was a retrospective cohort study of CDH patients diagnosed by fetal ultrasound and MRI at a fetal center between March 2002-March 2014. Parents of children ≥2years were contacted by telephone to participate in the validated Pediatric Quality of Life Inventory (PedsQL™, Version 4.0). RESULTS Of 95 CDH survivors, 68 met inclusion criteria, of which 28 (42%) completed the survey (mean age, range: 5.5, 2.3-11.7years). Based on prenatal markers of disease severity, there were no differences in performance between those with mild or severe forms of CDH. Overall, patients had minimal QOL limitations, but those with limitations had a higher risk for oxygen dependence at 30days of life (71%v. 29%, OR 0.16, CI, 0.031-0.82, p=0.02). ECMO was not associated with significantly worse QOL in physical or psychosocial functioning. Cronbach's alpha reliability coefficient yielded a correlation of 0.951 for the overall survey, 0.911 for physical functioning, and 0.901 for psychosocial functioning questions. CONCLUSIONS Patients that are prenatally diagnosed with severe forms of CDH have similar QOL outcomes across all categories of physical and psychosocial functioning. This pilot study is encouraging and may allow improved counseling for expectant parents of CDH patients.
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Affiliation(s)
- Fariha Sheikh
- Texas Children's Fetal Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Adesola Akinkuotu
- Texas Children's Fetal Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Sarah Jane Clark
- Texas Children's Fetal Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Irving J Zamora
- Texas Children's Fetal Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Darrell L Cass
- Texas Children's Fetal Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Oluyinka Olutoye
- Texas Children's Fetal Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Timothy C Lee
- Texas Children's Fetal Center, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX.
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Kumar VHS. Current Concepts in the Management of Congenital Diaphragmatic Hernia in Infants. Indian J Surg 2015; 77:313-21. [PMID: 26702239 DOI: 10.1007/s12262-015-1286-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 05/18/2015] [Indexed: 10/23/2022] Open
Abstract
The therapeutic approach to congenital diaphragmatic hernia (CDH) has shifted from one of immediate repair to management of pulmonary hypertension, physiologic stabilization, and delayed surgical repair. Lung hypoplasia, remodeled pulmonary vasculature, and ventricular dysfunction all contribute to the high morbidity and mortality associated with CDH. In addition, genetic syndromes associated with CDH can increase the incidence of serious anomalies and hence impact survival. Prenatal and postnatal management of infants with CDH is challenging in the best of circumstances and need multidisciplinary teams for optimal outcomes. However, advances using ultrasound and fetal MRI can predict prognosis and survival and plan for postnatal management. Survival rates for patients with CDH have increased for the past decade with better management at resuscitation; implementation of gentle ventilation strategies; and medical management of pulmonary hypertension, physiologic stabilization, and extracorporeal membrane oxygenation. However, follow-up of these infants for long-term morbidities is essential for optimal outcomes after discharge.
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Affiliation(s)
- Vasanth H S Kumar
- Department of Pediatrics, University at Buffalo, State University of New York, Buffalo, NY USA
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Phithakwatchara N, Coleman A, Peiro JL, Lee AE, Keswani SG, Kline-Fath B, Lim FY, Shaaban AF. Expanded intrathoracic space in fetal cases of isolated congenital diaphragmatic hernia contributes to disparity between percent predicted lung volume and observed to expected total lung volume. Prenat Diagn 2014; 35:154-9. [DOI: 10.1002/pd.4508] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 09/24/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Nisarat Phithakwatchara
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology; Faculty of Medicine Siriraj Hospital; Bangkok Thailand
| | - Alan Coleman
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric, General and Thoracic Surgery; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Jose L. Peiro
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric, General and Thoracic Surgery; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Amanda E. Lee
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric, General and Thoracic Surgery; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Sundeep G. Keswani
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric, General and Thoracic Surgery; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Beth Kline-Fath
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric Radiology; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Foong-Yen Lim
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric, General and Thoracic Surgery; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Aimen F. Shaaban
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric, General and Thoracic Surgery; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
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Prenatal MR imaging of congenital diaphragmatic hernias: association of MR fetal lung volume with the need for postnatal prosthetic patch repair. Eur Radiol 2014; 25:258-66. [PMID: 25182631 DOI: 10.1007/s00330-014-3410-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 08/16/2014] [Accepted: 08/22/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To assess whether the need for postnatal prosthetic patch repair of the diaphragmatic defect in neonates with a congenital diaphragmatic hernia (CDH) is associated with the antenatal measured observed-to-expected magnetic resonance fetal lung volume (o/e MR-FLV). METHODS The o/e MR-FLV was calculated in 247 fetuses with isolated CDH. Logistic regression analysis was used to assess the prognostic value of the individual o/e MR-FLV for association with the need for postnatal patch repair. RESULTS Seventy-seven percent (77%) of patients with a CDH (190/247) required prosthetic patch repair and the defect was closed primarily in 23% (57/247). Patients requiring a patch had a significantly lower o/e MR-FLV (27.7 ± 10.2%) than patients with primary repair (40.8 ± 13.8%, p < 0.001, AUC = 0.786). With an o/e MR-FLV of 20%, 92% of the patients required patch repair, compared to only 24% with an o/e MR-FLV of 60%. The need for a prosthetic patch was further influenced by the fetal liver position (herniation/no herniation) as determined by magnetic resonance imaging (MRI; p < 0.001). Fetal liver position, in addition to the o/e MR-FLV, improves prognostic accuracy (AUC = 0.827). CONCLUSION Logistic regression analysis based on the o/e MR-FLV is useful for prenatal estimation of the prosthetic patch requirement in patients with a CDH. In addition to the o/e MR-FLV, the position of the liver as determined by fetal MRI helps improve prognostic accuracy. KEY POINTS • The o/e MR-FLV is associated with the need for postnatal patch repair in CDH. • The need for a patch is associated with a significantly lower o/e MR-FLV (p < 0.001). • The patch requirement is also influenced by fetal liver position. • Fetal liver position, in addition to the o/e MR-FLV, improves prognostic accuracy. • CDH-fetuses with a high probability for patch requirement can be identified prenatally.
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Zamora IJ, Olutoye OO, Cass DL, Fallon SC, Lazar DA, Cassady CI, Mehollin-Ray AR, Welty SE, Ruano R, Belfort MA, Lee TC. Prenatal MRI fetal lung volumes and percent liver herniation predict pulmonary morbidity in congenital diaphragmatic hernia (CDH). J Pediatr Surg 2014; 49:688-93. [PMID: 24851749 DOI: 10.1016/j.jpedsurg.2014.02.048] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Accepted: 02/13/2014] [Indexed: 11/27/2022]
Abstract
PURPOSE The purpose of this study was to determine whether prenatal imaging parameters are predictive of postnatal CDH-associated pulmonary morbidity. METHODS The records of all neonates with CDH treated from 2004 to 2012 were reviewed. Patients requiring supplemental oxygen at 30 days of life (DOL) were classified as having chronic lung disease (CLD). Fetal MRI-measured observed/expected total fetal lung volume (O/E-TFLV) and percent liver herniation (%LH) were recorded. Receiver operating characteristic (ROC) curves and multivariate regression were applied to assess the prognostic value of O/E-TFLV and %LH for development of CLD. RESULTS Of 172 neonates with CDH, 108 had fetal MRIs, and survival was 76%. 82% (89/108) were alive at DOL 30, 46 (52%) of whom had CLD. Neonates with CLD had lower mean O/E-TFLV (30 vs.42%; p=0.001) and higher %LH (21.3±2.8 vs.7.1±1.8%; p<0.001) compared to neonates without CLD. Using ROC analysis, the best cutoffs in predicting CLD were an O/E-TFLV<35% (AUC=0.74; p<0.001) and %LH>20% (AUC=0.78; p<0.001). On logistic regression, O/E-TFLV<35% and a %LH>20% were highly associated with indicators of long-term pulmonary sequelae. On multivariate analysis, %LH was the strongest predictor of CLD in patients with CDH (OR: 10.96, 95%CI: 2.5-48.9, p=0.002). CONCLUSION Prenatal measurement of O/E-TFLV and %LH is predictive of CDH pulmonary morbidity and can aid in establishing parental expectations of postnatal outcomes.
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Affiliation(s)
- Irving J Zamora
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; The Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Oluyinka O Olutoye
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; The Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA; Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - Darrell L Cass
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; The Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA; Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - Sara C Fallon
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; The Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - David A Lazar
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; The Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Christopher I Cassady
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; Department of Radiology, Baylor College of Medicine, Houston, TX, USA
| | - Amy R Mehollin-Ray
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; Department of Radiology, Baylor College of Medicine, Houston, TX, USA
| | - Stephen E Welty
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; Department of Pediatrics, Division of Neonatology, Baylor College of Medicine, Houston, TX, USA
| | - Rodrigo Ruano
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - Michael A Belfort
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX, USA
| | - Timothy C Lee
- Texas Children's Fetal Center, Baylor College of Medicine, Houston, TX, USA; The Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA.
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Kehl S, Siemer J, Brunnemer S, Weiss C, Eckert S, Schaible T, Sütterlin M. Prediction of postnatal outcomes in fetuses with isolated congenital diaphragmatic hernias using different lung-to-head ratio measurements. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2014; 33:759-767. [PMID: 24764330 DOI: 10.7863/ultra.33.5.759] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVES The purpose of this study was to compare different methods for measuring the fetal lung area-to-head circumference ratio and to investigate their prediction of postpartum survival and the need for neonatal extracorporeal membrane oxygenation (ECMO) therapy in fetuses with isolated congenital diaphragmatic hernias. METHODS This prospective study included 118 fetuses of at least 20 weeks' gestation with isolated left-sided congenital diaphragmatic hernias. The lung-to-head ratio was measured with 3 different methods (longest diameter, anteroposterior diameter, and tracing). To eliminate the influence of gestational age, the observed-to-expected lung-to-head ratio was calculated. Receiver operating characteristic (ROC) curves were calculated for the statistical prediction of survival and need for ECMO therapy by the observed-to-expected lung-to-head ratio measured with the different methods. RESULTS For survival and ECMO necessity 118 and 102 cases (16 neonates were not eligible for ECMO) were assessed, respectively. For prediction of postpartum survival and ECMO necessity, the areas under the ROC curves and 95% confidence intervals showed very similar results for the 3 methods for prediction of survival (tracing, 0.8445 [0.7553-0.9336]; longest diameter, 0.8248 [0.7360-0.9136]; and anteroposterior diameter, 0.8002 [0.7075-0.8928]) and for ECMO necessity (tracing, 0.7344 [0.6297-0.8391]; longest diameter, 0.7128 [0.6027-0.8228]; and anteroposterior diameter, 0.7212 [0.6142-0.8281]). Comparisons between the areas under the ROC curves showed that the tracing method was superior to the anteroposterior diameter method in predicting postpartum survival (P = .0300). CONCLUSIONS Lung-to-head ratio and observed-to-expected lung-to-head ratio measurements were shown to accurately predict postnatal survival and the need for ECMO therapy in fetuses with left-sided congenital diaphragmatic hernias. Tracing the limits of the lungs seems to be the favorable method for calculating the fetal lung area.
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Affiliation(s)
- Sven Kehl
- Department of Obstetrics and Gynecology, University Medical Center Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany.
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13
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Repetitive MR measurements of lung volume in fetuses with congenital diaphragmatic hernia: individual development of pulmonary hypoplasia during pregnancy and calculation of weekly lung growth rates. Eur Radiol 2013; 24:312-9. [DOI: 10.1007/s00330-013-3011-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 08/18/2013] [Accepted: 08/21/2013] [Indexed: 02/07/2023]
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Periodic MRI lung volume assessment in fetuses with congenital diaphragmatic hernia: prediction of survival, need for ECMO, and development of chronic lung disease. AJR Am J Roentgenol 2013; 201:419-26. [PMID: 23883224 DOI: 10.2214/ajr.12.8655] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The purpose of the study was to investigate the ability to predict survival, need for extracorporeal membrane oxygenation (ECMO), and incidence of chronic lung disease in patients with congenital diaphragmatic hernia in the context of a classification into three different times of gestation (< 28, 28-32, and > 32 weeks) by assessing the ratio between observed and expected MRI fetal lung volume. MATERIALS AND METHODS The data analysis included 226 fetuses with congenital diaphragmatic hernia. MRI was performed at different times of gestation with a T2-weighted HASTE sequence. Receiver operating characteristic curve analysis was performed to investigate the prognostic value of assessment of the ratio between observed and expected MRI fetal lung volumes at different stages of fetal growth. RESULTS For all reviewed times of gestation, the ratio between observed and expected MRI fetal lung volumes had almost equivalent statistically significant differences for neonatal survival (p ≤ 0.0029), need for ECMO therapy (p ≤ 0.0195), and development of chronic lung disease (p ≤ 0.0064). Results with high prognostic accuracy for early and for medium and late times in gestation also were obtained. Receiver operating characteristic analysis showed the highest area under the curve (≥ 0.819) for neonatal survival. CONCLUSION In patients with congenital diaphragmatic hernia, the relation between observed and expected MRI fetal lung volume is a valuable prognostic parameter for predicting neonatal mortality, morbidity represented by the development of chronic lung disease, and the need for ECMO therapy in early gestation (< 28 weeks) as well as later gestation with no statistically significant differences.
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15
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Kehl S, Becker L, Eckert S, Weiss C, Schaible T, Neff KW, Siemer J, Sütterlin M. Prediction of mortality and the need for neonatal extracorporeal membrane oxygenation therapy by 3-dimensional sonography and magnetic resonance imaging in fetuses with congenital diaphragmatic hernias. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2013; 32:981-988. [PMID: 23716519 DOI: 10.7863/ultra.32.6.981] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVES To compare different rotation angles for assessment of fetal lung volume by 3-dimensional (3D) sonography with magnetic resonance imaging (MRI) regarding prediction of mortality and the need for neonatal extracorporeal membrane oxygenation (ECMO) therapy in fetuses with congenital diaphragmatic hernias. METHODS One hundred patients with fetal congenital diaphragmatic hernias between 22 and 39 weeks' gestation were examined by 3D sonography and MRI. Sonographic contralateral fetal lung volumes were assessed by the rotational technique (virtual organ computer-aided analysis) at 3 different rotation angles: 6°, 15°, and 30°. The MRI fetal lung volumes were calculated based on multiplanar T2-weighted MRI. To eliminate the influence of gestational age, the observed to expected contralateral fetal lung volume on sonography and the observed to expected fetal lung volume on MRI were calculated. Receiver operating characteristic (ROC) curves were calculated for the statistical prediction of survival and need for ECMO therapy by the observed to expected contralateral fetal lung volume (sonography) and observed to expected fetal lung volume (MRI). RESULTS One hundred cases were assessed for survival and 89 for ECMO necessity (11 neonates were not eligible for ECMO). For prediction of postpartum survival and ECMO necessity, the areas under the ROC curves (AUCs) showed very similar results for MRI and 3D sonography: observed to expected fetal lung volume by MRI, 0.819 (95% confidence interval, 0.730-0.909) and 0.835 (0.748-0.922), respectively; 6° sonography, 0.765 (0.647-0.883) and 0.820 (0.734-0.905); 15° sonography, 0.784 (0.672-0.896) and 0.811 (0.719-0.903); and 30° sonography, 0.732 (0.609-0.855) and 0.772 (0.671-0.872). Comparisons between the AUCs revealed no statistical differences. CONCLUSIONS We have shown the good prognostic value of 3D sonography in fetuses with congenital diaphragmatic hernias compared with MRI, particularly when using small rotation angles. Therefore, it can be an appropriate diagnostic tool when counseling patients for congenital diaphragmatic hernias.
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Affiliation(s)
- Sven Kehl
- Department of Obstetrics and Gynecology, Mannheim University Medical Center, Mannheim, Germany.
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Debus A, Hagelstein C, Kilian AK, Weiss C, Schönberg SO, Schaible T, Neff KW, Büsing KA. Fetal Lung Volume in Congenital Diaphragmatic Hernia: Association of Prenatal MR Imaging Findings with Postnatal Chronic Lung Disease. Radiology 2013; 266:887-95. [DOI: 10.1148/radiol.12111512] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lillehei CW, Gauvreau K, Jenkins KJ. Risk adjustment for neonatal surgery: a method for comparison of in-hospital mortality. Pediatrics 2012; 130:e568-74. [PMID: 22926171 DOI: 10.1542/peds.2011-3647] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE To develop a risk-adjustment method for evaluation of in-hospital mortality after noncardiac neonatal surgery regardless of gestational age. METHODS Infants ≤ 30 days old undergoing noncardiac surgical procedures were identified by using the Kids' Inpatient Database (KID) 2000 + 2003. Neonates were included regardless of gestational age. International Classification of Disease, Ninth Revision, Clinical Modification codes were used to assign procedures to 1 of 4 previously derived risk categories. Prematurity and other clinical variables were assessed in logistic regression analysis. The final multivariable model was validated in 3 independent data sets: KID 2006, Pediatric Health Information System (PHIS) 2001-2003, and PHIS 2006-2008. The model was applied to generate standardized mortality ratios for institutions within PHIS 2006-2008. RESULTS Among 18437 eligible cases in KID 2000 + 2003, 15278 (83%) had 1 of 66 procedure codes assigned to a risk category and were eligible for analysis. In-hospital mortality for premature infants was 10.5% compared with 2.0% for full-term neonates. In addition to risk category, the clinical variables improving prediction of in-hospital death were prematurity, serious respiratory conditions, necrotizing enterocolitis, neonatal sepsis, and congenital heart disease. Area under the receiver-operator characteristic curve for the final model was 0.90. The model also showed excellent discrimination in the 3 validation data sets (0.90, 0.89, and 0.89). Within 41 institutions in PHIS, standardized mortality ratios ranged from 0.37 to 1.91. CONCLUSIONS This validated method provides a tool for risk adjustment of neonates undergoing noncardiac surgery to allow comparative analyses of in-hospital mortality.
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Affiliation(s)
- Craig W Lillehei
- Department of Surgery, Children’s Hospital Boston, Boston, Massachusetts, USA.
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Mehollin-Ray AR, Cassady CI, Cass DL, Olutoye OO. Fetal MR Imaging of Congenital Diaphragmatic Hernia. Radiographics 2012; 32:1067-84. [DOI: 10.1148/rg.324115155] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Quantitative pulmonary perfusion imaging at 3.0 T of 2-year-old children after congenital diaphragmatic hernia repair: initial results. Eur Radiol 2012; 22:2743-9. [PMID: 22692394 DOI: 10.1007/s00330-012-2528-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 04/26/2012] [Accepted: 05/03/2012] [Indexed: 10/28/2022]
Abstract
OBJECTIVE To investigate whether dynamic contrast-enhanced MR imaging of the lung following congenital diaphragmatic hernia repair is feasible at 3.0 T in 2-year-old children and whether associated lung hypoplasia (reflected in reduced pulmonary microcirculation) can be demonstrated in MRI. METHODS Twelve children with a mean age 2.0 ± 0.2 years after hernia repair underwent DCE-MRI at 3.0 T using a time-resolved angiography with stochastic trajectories sequence. Quantification of lung perfusion was performed using a pixel-by-pixel deconvolution approach. Six regions of interest were placed (upper, middle and lower parts of right and left lung) to assess differences in pulmonary blood flow (PBF), pulmonary blood volume (PBV) and mean transit time (MTT) while avoiding the inclusion of larger pulmonary arteries and veins. RESULTS The difference in PBF and PBV between ipsilateral and contralateral lung was significant (P < 0.5). No significant differences could be detected for the MTT (P = 0.5). CONCLUSION DCE-MRI in 2-year-old patients is feasible at 3.0 T. Reduced perfusion in the ipsilateral lung is reflected by significantly lower PBF values compared with the contralateral lung. DCE-MRI of the lung in congenital diaphragmatic hernia can help to characterise lung hypoplasia initially and in the long-term follow-up of children after diaphragmatic repair. KEY POINTS Congenital diaphragmatic hernia often leads to lung hypoplasia and secondary pulmonary hypertension. Dynamic contrast-enhanced 3-T magnetic resonance can assess these complications in 2-year-olds. The affected ipsilateral lung shows reduced perfusion and lower pulmonary blood flow. Thoracic DCE-MRI helps characterise lung hypoplasia in children after hernia repair.
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Abstract
PURPOSE OF REVIEW Congenital diaphragmatic hernia (CDH) is a rare developmental defect resulting in variable degrees of lung and pulmonary vasculature hypoplasia. Whereas many high-volume centers have recently reported increased survival rates, this has not been the collective trend. One potential explanation for this is inconsistent perinatal care among centers. RECENT FINDINGS Significant efforts have been made to identify prenatally those fetuses that will be most severely affected. A number of radiologic features have shown promise for achieving this goal as well as identifying fetuses that may benefit from prenatal intervention. When CDH is antenatally diagnosed, early referral to a tertiary center is recommended. Centers that routinely use postnatal management protocols have demonstrated improved overall survival rates including increased survival in high-risk CDH patients. SUMMARY As a result of advancements in perinatal care, more severely affected newborns with CDH are now surviving. These patients may experience a number of associated morbidities which affect not only their health but overall quality of life. A multidisciplinary approach to the long-term care of these patients will allow early identification and management of these morbidities.
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Le LD, Keswani SG, Biesiada J, Lim FY, Kingma PS, Haberman BE, Frischer J, Habli M, Crombleholme TM. The congenital diaphragmatic hernia composite prognostic index correlates with survival in left-sided congenital diaphragmatic hernia. J Pediatr Surg 2012; 47:57-62. [PMID: 22244393 PMCID: PMC3870853 DOI: 10.1016/j.jpedsurg.2011.10.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2011] [Accepted: 10/06/2011] [Indexed: 11/26/2022]
Abstract
PURPOSE We developed the congenital diaphragmatic hernia congenital prognostic index (CDH-CPI) to incorporate all known prognostic variables into a single composite index to improve prognostic accuracy. The purpose of this study is to examine the ability of the CDH-CPI to predict survival in patients with left-sided congenital diaphragmatic hernia and to determine if the index has a stronger correlation with survival than each of the individual components. METHODS A retrospective review of patients with left-sided congenital diaphragmatic hernia between 2004 and 2010 was conducted. Ten prenatal parameters of the CDH-CPI were collected, total score was tabulated, and patients stratified according to total score and survival. RESULTS Sixty-four patients with a prenatal diagnosis of left-sided congenital diaphragmatic hernia were identified. Patients with a CDH-CPI score of 8 or higher had a significantly higher survival than patients with a CDH-CPI score of lower than 8. The CDH-CPI has the strongest correlation with survival compared with the individual parameters measured. The CDH-CPI correlates with extracorporeal membrane oxygenation use, and 75% of patients with a score of 5 or lower were placed on extracorporeal membrane oxygenation. CONCLUSIONS The CDH-CPI accurately stratifies survival in left-sided congenital diaphragmatic hernia. The amalgamation of 10 prenatal parameters of the CDH-CPI may be a better prenatal predictor than any single prognostic variable currently used.
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Affiliation(s)
- Louis D. Le
- The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA,Division of Pediatric General, Thoracic and Fetal Surgery, The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA
| | - Sundeep G. Keswani
- The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA,Division of Pediatric General, Thoracic and Fetal Surgery, The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA
| | - Jacek Biesiada
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA
| | - Foong-Yen Lim
- The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA,Division of Pediatric General, Thoracic and Fetal Surgery, The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA
| | - Paul S. Kingma
- Section of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45229, USA
| | - Beth E. Haberman
- Section of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45229, USA
| | - Jason Frischer
- Division of Pediatric General, Thoracic and Fetal Surgery, The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA
| | - Mounira Habli
- The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA,Division of Pediatric General, Thoracic and Fetal Surgery, The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA
| | - Timothy M. Crombleholme
- The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA,Division of Pediatric General, Thoracic and Fetal Surgery, The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio 45267, USA,Colorado Fetal Care Center, Colorado Institute for Maternal Fetal Health, Children’s Hospital, Colorado and the University of Colorado School of Medicine, Aurora, CO 80045, USA,Corresponding author. Division of General, Thoracic and Fetal Surgery, The Fetal Care Center of Cincinnati, Cincinnati Children’s Hospital Medical Center, MLC 11025 Cincinnati, Ohio 45229-3039, USA. Tel.: +1 513 636 6259; fax: +1 513 636 2735. (T.M. Crombleholme)
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22
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Right- versus left-sided congenital diaphragmatic hernia: postnatal outcome at a specialized tertiary care center. Pediatr Crit Care Med 2012; 13:66-71. [PMID: 21478793 DOI: 10.1097/pcc.0b013e3182192aa9] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To systematically investigate the impact of the location of the defect in congenital diaphragmatic hernia on neonatal mortality and morbidity with a special focus on survival at discharge, extracorporeal membrane oxygenation requirement, and the development of chronic lung disease. DESIGN Retrospective tertiary care center study with a matched-pair analysis of all fetuses that were treated for congenital diaphragmatic hernia between 2004 and 2009. SETTING A specialized tertiary care center for fetuses with congenital diaphragmatic hernia. PATIENTS Complete sets of data were available for 106 patients with congenital diaphragmatic hernia. For 17 of 18 infants with right-sided congenital diaphragmatic hernia we were able to allocate infants with left-sided congenital diaphragmatic hernia with no relevant difference in previously described prognostic factors, such as pulmonary hypoplasia and liver herniation. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS There was a strong trend toward better survival in infants with right-sided congenital diaphragmatic hernia than with left-sided congenital diaphragmatic hernia (94% vs. 70%; p = .07). More neonates with left-sided congenital diaphragmatic hernia died of severe pulmonary hypertension despite extracorporeal membrane oxygenation. Fewer neonates with right-sided congenital diaphragmatic hernia died, yet higher degrees of pulmonary hypoplasia and oxygen requirement were observed despite extracorporeal membrane oxygenation. CONCLUSIONS In congenital diaphragmatic hernia, the location of the defect has a substantial impact on postnatal survival and the development of chronic lung disease. In left-sided congenital diaphragmatic hernia, pulmonary hypertension resistant to therapeutic management, including extracorporeal membrane oxygenation, is more common and is associated with a higher rate of neonatal demise. Right-sided congenital diaphragmatic hernia infants have an increased benefit from extracorporeal membrane oxygenation but the better survival entails a higher rate of chronic lung disease.
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Kline-Fath BM. Current advances in prenatal imaging of congenital diaphragmatic [corrected] hernia. Pediatr Radiol 2012; 42 Suppl 1:S74-90. [PMID: 21739292 DOI: 10.1007/s00247-011-2183-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 03/22/2011] [Accepted: 03/31/2011] [Indexed: 11/29/2022]
Abstract
Congenital diaphragmatic hernia, despite advances in therapy, remains a complex condition with significant morbidity and mortality. The etiology of the disorder is still incompletely understood, though the pulmonary hypoplasia and pulmonary hypertension that develop secondarily must be overcome to improve survival. Prenatal US and fetal MRI have helped in the development of a greater understanding of this disease. Also with these modalities, measurement techniques have been developed in an attempt to provide prognosticators for the development of pulmonary hypoplasia and pulmonary hypertension. There is a broad range of approaches for performing these measurements, and variability among imaging centers is noted. Despite inconsistent approaches, these techniques have become the foundation for counseling and prenatal and postnatal therapy. It is hoped that with further research with prenatal US and fetal MRI and the development of innovative medical and surgical therapies that the morbidity and mortality of children with congenital diaphragmatic hernias can be significantly reduced.
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Affiliation(s)
- Beth M Kline-Fath
- Department of Radiology, Fetal Care Center of Cincinnati, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.
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Castellote A, Mencho S, Carreras E, Higueras T, Cadavid L, Piqueras J, Enriquez G. Correlation between US and MRI for prenatal lung volumetry in diaphragmatic hernia, and use of Doppler to identify the ipsilateral lung cap. Pediatr Radiol 2011; 41:1569-77. [PMID: 21938506 DOI: 10.1007/s00247-011-2200-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 03/28/2011] [Accepted: 05/16/2011] [Indexed: 11/27/2022]
Abstract
BACKGROUND Pulmonary hypoplasia is a common cause of neonatal death. OBJECTIVE To describe the correlation between relative fetal lung volume (RFLV) and lung-to-head ratio (LHR) in fetuses with unilateral diaphragmatic hernia. Additionally, to describe identification of the ipsilateral lung cap by power Doppler. MATERIALS AND METHODS Single-institution study of consecutive fetuses with diaphragmatic hernia. LHR (by US) and RFLV (by MRI) were correlated in fetuses with and without an ipsilateral lung cap seen at MRI. In four, color/power Doppler was used to follow the pulmonary artery of the ipsilateral lung to identify the compressed cap. RESULTS The study included 48 fetuses of 20-38 weeks' gestational age (mean, 26 weeks). Mean LHR was 1.52 (range, 0.6-3) in fetuses with a lung cap and 1.15 (range, 0.6-2.58) in fetuses without (P = 0.043). Mean RFLV was 47.4% (range, 18-80%) in fetuses with and 32.9% (range, 14-57%) in fetuses without a lung cap (P = 0.005). RFLV and LHR correlated (r = 0.41, P = 0.01 in those with a cap; r = 0.50, P = 0.05 in those without). Power Doppler identified the ipsilateral lung cap and pulsed Doppler confirmed pulmonary vascularization in four of four fetuses. CONCLUSION LHR underestimates lung volume in fetuses with an ipsilateral lung cap. Power Doppler may be useful for identifying the cap.
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Affiliation(s)
- Amparo Castellote
- Department of Pediatric Radiology, University Children's Hospital Vall d'Hebron, Ps. Vall d'Hebron 119-129, 08035 Barcelona, Spain.
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Kehl S, Kalk AL, Eckert S, Schaible T, Sütterlin M, Neff W, Siemer J. Assessment of lung volume by 3-dimensional sonography and magnetic resonance imaging in fetuses with congenital diaphragmatic hernias. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2011; 30:1539-1545. [PMID: 22039026 DOI: 10.7863/jum.2011.30.11.1539] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVES The purpose of this study was to evaluate the influence of different rotation angles in assessment of the contralateral lung volume by 3-dimensional (3D) sonography in comparison to magnetic resonance imaging (MRI) in fetuses with congenital diaphragmatic hernias. METHODS A total of 126 measurements by 3D sonography and MRI were conducted in 81 patients between 18 and 39 weeks' gestation. The 3D sonographic volumes of the contralateral fetal lung were calculated by the rotational technique (virtual organ computer-aided analysis) with rotation angles of 6°, 15°, and 30°. Transverse multiplanar T2-weighted MRI was performed for the MRI measurements. To compare the accuracy of 3D sonographic volumetry using different rotation angles, MRI assessment was taken as the reference method, and percentage errors and limits of agreement were calculated for each angle. RESULTS Three-dimensional sonographic volume measurements showed a high correlation with MRI (6° angle, R(2) = 0.86; 15° angle, R(2) = 0.78; 30° angle, R(2) = 0.68). The mean percentage error showed no systematic error. With regard to random error, the 6° step had significantly lower values than the larger angles 30° step (R = 0.472) and the narrowest limits of agreement. CONCLUSIONS Especially when using a small rotation angle, assessment of the contralateral fetal lung volume by 3D sonography in congenital diaphragmatic hernias is a reliable alternative to MRI.
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Affiliation(s)
- Sven Kehl
- Departments of Obstetrics and Gynecology, Mannheim University Medical Center, Heidelberg University, Mannheim, Germany.
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Messerschmidt A, Pataraia A, Helmer H, Kasprian G, Sauer A, Brugger PC, Pollak A, Weber M, Prayer D. Fetal MRI for prediction of neonatal mortality following preterm premature rupture of the fetal membranes. Pediatr Radiol 2011; 41:1416-20. [PMID: 21909717 DOI: 10.1007/s00247-011-2199-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 05/03/2011] [Accepted: 05/23/2011] [Indexed: 12/17/2022]
Abstract
BACKGROUND Lung MRI volumetrics may be valuable for fetal assessment following early preterm premature rupture of the foetal membranes (pPROM). OBJECTIVE To evaluate the predictive value of MRI lung volumetrics after pPROM. MATERIALS AND METHODS Retrospective cohort study of 40 fetuses after pPROM in a large, tertiary, perinatal referral center. Fetuses underwent MRI lung volumetrics. Estimated lung volume was expressed as percentage of expected lung volume (our own normal references). Primary outcome was neonatal mortality due to respiratory distress before discharge from hospital. RESULTS Gestational age range was 16-27 weeks. Estimated-to-expected lung volume was 73% in non-survivors and 102% in survivors (P < 0.05). There were no survivors with a lung volume less than 60% of expected. By logistic regression, mortality could be predicted with a sensitivity of 80%, specificity of 86% and accuracy of 85%. CONCLUSION Fetal MR lung volumetrics may be useful for predicting mortality due to respiratory distress in children with early gestational pPROM.
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Affiliation(s)
- Agnes Messerschmidt
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria.
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Mayer S, Klaritsch P, Petersen S, Done E, Sandaite I, Till H, Claus F, Deprest JA. The correlation between lung volume and liver herniation measurements by fetal MRI in isolated congenital diaphragmatic hernia: a systematic review and meta-analysis of observational studies. Prenat Diagn 2011; 31:1086-96. [DOI: 10.1002/pd.2839] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 06/28/2011] [Accepted: 06/29/2011] [Indexed: 11/06/2022]
Affiliation(s)
| | - Philipp Klaritsch
- Centre for Surgical Technologies, Faculty of Medicine; Katholieke Universiteit Leuven; B-3000; Leuven; Belgium
| | - Scott Petersen
- Centre for Surgical Technologies, Faculty of Medicine; Katholieke Universiteit Leuven; B-3000; Leuven; Belgium
| | | | | | - Holger Till
- Department of Paediatric Surgery; University Hospital Leipzig; D-40103; Leipzig; Germany
| | - Filip Claus
- Department of Radiology, Division of Medical Imaging; Katholieke Universiteit Leuven; B-3000; Leuven; Belgium
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Kehl S, Zirulnik A, Debus A, Sütterlin M, Siemer J, Neff W. In vitro models of the fetal lung: comparison of lung volume measurements with 3-dimensional sonography and magnetic resonance imaging. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2011; 30:1085-1091. [PMID: 21795484 DOI: 10.7863/jum.2011.30.8.1085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVES Three-dimensional (3D) sonography is an established volumetric method in gynecology and obstetrics. The aim of this study was to investigate the variability of 3D sonographic measurements and their accuracy in comparison with magnetic resonance imaging (MRI) for assessing fetal lung volume using in vitro lung models. METHODS Twenty-three in vitro lung models with randomly defined volumes ranging from 1 to 60 mL were made from gelatin with plastic sheaths, manually molded into the shape of fetal lungs. The models were measured using 3D sonography and MRI. The 3D sonographic volumes were calculated using the rotational technique with angles of 6° and 30°. Multiplanar T2-weighted sequences were used for the MRI measurements. The percentage error and absolute percentage error were calculated for each method, and intraobserver and interobserver variability in 3D sonographic measurements was assessed with intraclass correlation coefficients (ICCs). Agreement between calculated and real volumes using the limits of agreement method was also evaluated. RESULTS The ICCs for the rotation angles indicated very good intraobserver and interobserver variability (6°, 0.995 and 0.996; 30°, 0.997 and 0.985). No systematic errors were observed in the mean percentage errors for 3D sonographic measurements or MRI volumetry. The lowest median absolute percentage error (1.76) was obtained with MRI volumetry, significantly lower than the values for sonography (6°, 5.00; P < .001; 30°, 5.49; P < .001). There were no significant differences in absolute percentage errors between the rotation angles (P = .82) and no significant differences in limits of agreement between 3D sonography and MRI (6°, P = .76; 30°, P = .39). CONCLUSIONS Three-dimensional sonographic volumetry was almost as accurate as MRI in this in vitro model and can be regarded as a good alternative method. Further research is needed to confirm these findings in vivo and to assess the prognostic value in fetuses with lung hypoplasia (eg, congenital diaphragmatic hernias).
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Affiliation(s)
- Sven Kehl
- Department of Obstetrics and Gynecology, Mannheim University Hospital, Mannheim, Germany.
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Kehl S, Eckert S, Sütterlin M, Neff KW, Siemer J. Influence of different rotation angles in assessment of lung volumes by 3-dimensional sonography in comparison to magnetic resonance imaging in healthy fetuses. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2011; 30:819-825. [PMID: 21632997 DOI: 10.7863/jum.2011.30.6.819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVES Three-dimensional (3D) sonographic volumetry is established in gynecology and obstetrics. Assessment of the fetal lung volume by magnetic resonance imaging (MRI) in congenital diaphragmatic hernias has become a routine examination. In vitro studies have shown a good correlation between 3D sonographic measurements and MRI. The aim of this study was to compare the lung volumes of healthy fetuses assessed by 3D sonography to MRI measurements and to investigate the impact of different rotation angles. METHODS A total of 126 fetuses between 20 and 40 weeks' gestation were measured by 3D sonography, and 27 of them were also assessed by MRI. The sonographic volumes were calculated by the rotational technique (virtual organ computer-aided analysis) with rotation angles of 6° and 30°. To evaluate the accuracy of 3D sonographic volumetry, percentage error and absolute percentage error values were calculated using MRI volumes as reference points. Formulas to calculate total, right, and left fetal lung volumes according to gestational age and biometric parameters were derived by stepwise regression analysis. RESULTS Three-dimensional sonographic volumetry showed a high correlation compared to MRI (6° angle, R(2) = 0.971; 30° angle, R(2) = 0.917) with no systematic error for the 6° angle. Moreover, using the 6° rotation angle, the median absolute percentage error was significantly lower compared to the 30° angle (P < .001). The new formulas to calculate total lung volume in healthy fetuses only included gestational age and no biometric parameters (R(2) = 0.853). CONCLUSIONS Three-dimensional sonographic volumetry of lung volumes in healthy fetuses showed a good correlation with MRI. We recommend using an angle of 6° because it assessed the lung volume more accurately. The specifically designed equations help estimate lung volumes in healthy fetuses.
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Affiliation(s)
- Sven Kehl
- Department of Obstetrics and Gynecology, Mannheim University Hospital, Mannheim, Germany.
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Deprest J, Nicolaides K, Done' E, Lewi P, Barki G, Largen E, DeKoninck P, Sandaite I, Ville Y, Benachi A, Jani J, Amat-Roldan I, Gratacos E. Technical aspects of fetal endoscopic tracheal occlusion for congenital diaphragmatic hernia. J Pediatr Surg 2011; 46:22-32. [PMID: 21238635 DOI: 10.1016/j.jpedsurg.2010.10.008] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Accepted: 10/14/2010] [Indexed: 10/18/2022]
Abstract
In isolated congenital diaphragmatic hernia, prenatal prediction is made based on measurements of lung size and the presence of liver herniation into the thorax. A subset of fetuses likely to die in the postnatal period is eligible for fetal intervention that can promote lung growth. Rather than anatomical repair, this is now attempted by temporary fetal endoscopic tracheal occlusion (FETO). Herein we describe purpose-designed instruments that were developed thanks to a grant from the European Commission. The feasibility and safety of FETO have now been demonstrated in several active fetal surgery programs. The most frequent complication of the procedure is preterm premature rupture of the membranes, which is probably iatrogenic in nature. It does have an impact on gestational age at delivery and complicates balloon removal. FETO is associated with an apparent increase in survival compared with same severity controls, although this needs to be evaluated in a formal trial. The time has come to do so.
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Affiliation(s)
- Jan Deprest
- Division of Woman and Child, University Hospital Leuven, Leuven, Belgium.
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Schaible T, Hermle D, Loersch F, Demirakca S, Reinshagen K, Varnholt V. A 20-year experience on neonatal extracorporeal membrane oxygenation in a referral center. Intensive Care Med 2010; 36:1229-34. [PMID: 20425105 DOI: 10.1007/s00134-010-1886-5] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2009] [Accepted: 03/29/2010] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Advances in treatment of neonatal respiratory failure are responsible for a decline in the number of newborns treated with extracorporeal membrane oxygenation (ECMO). The aim of this study are to determine demographic changes, focusing on time of referral, diagnosis, and respiratory parameters in neonates put on ECMO. DESIGN Retrospective review. SETTING Tertiary ECMO center. PATIENTS A total of 321 neonates were treated with ECMO from January 1987 to December 2006. RESULTS Overall number of patients increased with every 5-year period, whereby congenital diaphragmatic hernia (CDH) was the most common diagnosis (53%), followed by meconium aspiration syndrome (MAS) (21%), sepsis and/or pneumonia (13%), and others such as persistent pulmonary hypertension of the newborn (PPHN), respiratory distress syndrome (RDS), or hypoplasia of the lung (13%). Worsening severity of illness as measured by ECMO duration and days on ventilator has to be stated for all diagnoses. Nevertheless, survival rate remained stable; both overall and diagnosis-specific mortality rates did not change significantly. Of all children, 67% survived to discharge or transfer, while best rates were seen for MAS (94%), followed by sepsis and/or pneumonia (69%), CDH (62%), and other diagnoses (43%). Concerning survival rate, no difference between inborn and outborn children occurred. However, between early- and late-referred children, a referral to the ECMO center during the first 24 h of life was associated with a significantly higher rate of survival (77% versus 54%, p = 0.0004), predominantly seen for CDH (67% versus 35%, p = 0.02). CONCLUSION We strongly recommend timely transfer to an ECMO center in patients with CDH who are at risk of circulatory failure.
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Affiliation(s)
- T Schaible
- Department of Pediatrics, University Medicine Mannheim, Theodor-Kutzer-Ufer 1-3, Mannheim, 68167, Germany.
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Carey WA, Colby CE. Extracorporeal Membrane Oxygenation for the Treatment of Neonatal Respiratory Failure. Semin Cardiothorac Vasc Anesth 2009; 13:192-7. [DOI: 10.1177/1089253209347948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This review discusses the use of extracorporeal membrane oxygenation (ECMO) for the treatment of respiratory failure in neonates. After briefly reviewing the early history of neonatal ECMO, the authors describe the respiratory diagnoses most often treated with ECMO and the manner in which affected neonates are deemed to have “failed” conventional therapies and thus require ECMO. After reviewing the most common indications for ECMO, factors that influence the timing of conversion to extracorporeal life support, as well as criteria that may exclude patients from receiving ECMO therapy, are described. At the conclusion of this article, the authors discuss the long-term outcomes of neonates whose respiratory disease was treated with ECMO and the costs associated with that care.
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Affiliation(s)
- William A. Carey
- Division of Neonatal Medicine, Mayo Clinic, Rochester, Minnesota,
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Durkin EF, Shaaban A. Commonly encountered surgical problems in the fetus and neonate. Pediatr Clin North Am 2009; 56:647-69, Table of Contents. [PMID: 19501697 DOI: 10.1016/j.pcl.2009.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Neonatal surgical care requires a current understanding of pre- and postnatal intervention for a myriad of congenital anomalies. This article includes an update of the recent information on commonly encountered fetal and neonatal surgical problems, highlighting specific areas of controversy and challenges in diagnosis. The authors hope that this article is useful for trainees and practitioners involved in any aspect of fetal and neonatal care.
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Affiliation(s)
- Emily F Durkin
- Department of Surgery, University of Wisconsin, School of Medicine and Public Health, H4/325 Clinical Science Center, Madison, WI 53798, USA
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Büsing KA, Kilian AK, Schaible T, Endler C, Schaffelder R, Neff KW. MR Relative Fetal Lung Volume in Congenital Diaphragmatic Hernia: Survival and Need for Extracorporeal Membrane Oxygenation. Radiology 2008; 248:240-6. [DOI: 10.1148/radiol.2481070952] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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