Neil Patel1, Anna Claudia Massolo2, Anshuman Paria3, Emily J Stenhouse4, Lindsey Hunter5, Emma Finlay5, Carl F Davis6. 1. Department of Neonatology, Royal Hospital for Children, Glasgow, United Kingdom. Electronic address: neilpatel1@nhs.net. 2. Department of Medical and Surgical Neonatology, Bambino Gesù Children's Hospital, Rome, Italy. 3. Department of Neonatology, Royal Hospital for Children, Glasgow, United Kingdom. 4. Department of Pediatric Radiology, Royal Hospital for Children, Glasgow, United Kingdom. 5. Department of Pediatric Cardiology, Royal Hospital for Children, Glasgow, United Kingdom. 6. Department of Pediatric Surgery, Royal Hospital for Children, Glasgow, United Kingdom.
Abstract
OBJECTIVE: To assess patterns of postnatal ventricular function and their relationship to prenatal and postnatal markers of disease severity in infants with congenital diaphragmatic hernia (CDH). STUDY DESIGN: In this observational case-control study of cardiac function in infants with CDH in the first 5 days of life, systolic and diastolic function in the right ventricle (RV) and left ventricle (LV) were assessed using speckle tracking echocardiography-derived global strain and tissue Doppler imaging. Correlation between cardiac function and prenatal observed:expected total fetal lung volume (TFLV), oxygenation index (OI), duration of intubation, and hospital length of stay were assessed. RESULTS: All measures of systolic and diastolic function were significantly reduced in the CDH group (n = 25) compared with controls (n = 20) at <48 hours, and were improved by 72-120 hours. LV global systolic longitudinal strain (GLS) correlated with prenatal TFLV (R2 = 0.32; P = .03), OI (R2 = 0.35; P < .001), duration of intubation (R2 = 0.24; P = .04), and length of stay (R2 = 0.4; P = .006). Mean (SD) LV GLS at <48 hours was significantly lower in infants with CDH who did not survive and/or required ECMO compared with those who did not: -11.5 (5.3)% vs -16.9 (5.3)% (P = .02). CONCLUSIONS: RV and LV function are impaired in the transitional period in infants with CDH. Early LV systolic function correlates with prenatal and postnatal markers of clinical disease severity and may be an important determinant of disease severity and therapeutic target in CDH. These findings support regular assessment of cardiac function in CDH and investigational trials of targeted cardiovascular therapies.
OBJECTIVE: To assess patterns of postnatal ventricular function and their relationship to prenatal and postnatal markers of disease severity in infants with congenital diaphragmatic hernia (CDH). STUDY DESIGN: In this observational case-control study of cardiac function in infants with CDH in the first 5 days of life, systolic and diastolic function in the right ventricle (RV) and left ventricle (LV) were assessed using speckle tracking echocardiography-derived global strain and tissue Doppler imaging. Correlation between cardiac function and prenatal observed:expected total fetal lung volume (TFLV), oxygenation index (OI), duration of intubation, and hospital length of stay were assessed. RESULTS: All measures of systolic and diastolic function were significantly reduced in the CDH group (n = 25) compared with controls (n = 20) at <48 hours, and were improved by 72-120 hours. LV global systolic longitudinal strain (GLS) correlated with prenatal TFLV (R2 = 0.32; P = .03), OI (R2 = 0.35; P < .001), duration of intubation (R2 = 0.24; P = .04), and length of stay (R2 = 0.4; P = .006). Mean (SD) LV GLS at <48 hours was significantly lower in infants with CDH who did not survive and/or required ECMO compared with those who did not: -11.5 (5.3)% vs -16.9 (5.3)% (P = .02). CONCLUSIONS: RV and LV function are impaired in the transitional period in infants with CDH. Early LV systolic function correlates with prenatal and postnatal markers of clinical disease severity and may be an important determinant of disease severity and therapeutic target in CDH. These findings support regular assessment of cardiac function in CDH and investigational trials of targeted cardiovascular therapies.
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