Cited by 541Congenital Heart Disease StudiesNeonatal and fetal brain pathologyCardiovascular Conditions and Treatments

An MRI Study of Neurological Injury Before and After Congenital Heart Surgery

Mahle, William T., Tavani, Federica, Zimmerman, Robert A., Nicolson, Susan C., Galli, Kristin K., Gaynor, J. William, Clancy, Robert R., Montenegro, Lisa M. +4 more·2002·Circulation

Abstract

Background Neuorological deficits are observed in patients with congenital heart disease (CHD) before and after neonatal surgery, the etiology being multifactorial. To understand the impact of preoperative events and to characterize the evaluation of neurological injury, we performed serial magnetic resonance imaging (MRI) studies of the brain in a cohort of neonates undergoing open-heart surgery. Methods and Results Twenty-four term neonates with CHD were studied prospectively with brain MRI: before surgery, within 2 weeks of surgery, and several months after surgery. Preoperative MRI examinations showed periventricular leukomalacia (PVL) in 4 patients (16%) and infarct in 2 subjects (8%). MR spectroscopy was performed in 19 subjects preoperatively and revealed elevated brain lactate in 53%. An early postoperative MRI (n=21) identified new PVL in 48%, new infarct in 19%, and new parenchymal hemorrhage in 33%. New lesions or worsening of preoperative lesions occurred in 67% of subjects. No patient- or procedure-related factors for the development of early postoperative lesions were identified. A late postoperative MRI (n=17) demonstrated resolution of early lesions in 8 and mild cerebral atrophy in 2. Conclusions Mild ischemic lesions, primarily in the form of PVL, occur in a number of neonates with CHD before surgery and >50% of patients postoperatively. Resolution of these lesions is common 4 to 6 months after surgery. Longer-term follow-up is needed to determine the significance of perioperative ischemic lesions on functional outcome.

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Crossref · 10.1161/01.cir.0000032908.33237.b1

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Authors
Mahle, W. T., Tavani, F., Zimmerman, R. A., Nicolson, S. C., Galli, K. K., Gaynor, J. W., Clancy, R. R., Montenegro, L. M., Spray, T. L., Chiavacci, R. M., Wernovsky, G., & Kurth, C. D.
Affiliations
Children's Hospital of Philadelphia (US)
Venue
Circulation
Published
2002-09-24
Volume
106
Issue
12_suppl_1
Pages
I109-14
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W1902838673
Cited by
541
References
27
Citations by year
2026: 10 · 2025: 9 · 2024: 15 · 2023: 24 · 2022: 20 · 2021: 21 · 2020: 14 · 2019: 30 · 2018: 24 · 2017: 32 · 2016: 27 · 2015: 24 · 2014: 34 · 2013: 41 · 2012: 34
FWCI
9.80
Type
journal article
Language
en
Open access
closed
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Congenital Heart Disease Studies
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Neonatal and fetal brain pathology
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Cardiovascular Conditions and Treatments
Keywords
congenital heart disease, neonatal cardiac surgery, periventricular leukomalacia, cerebral infarction, parenchymal hemorrhage, brain lactate, MR spectroscopy, lesion resolution, brain atrophy
MeSH terms
Brain, Brain Chemistry, Cardiopulmonary Bypass, Cerebral Infarction, Cerebrovascular Disorders, Female, Heart Defects, Congenital, Humans, Infant, Newborn, Leukomalacia, Periventricular, Magnetic Resonance Imaging, Male, Magnetic Resonance Spectroscopy, Time Factors, Cohort Studies, Lactic Acid

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