Cited by 332Congenital Heart Disease StudiesAdvanced MRI Techniques and ApplicationsCardiovascular Conditions and Treatments

Preoperative cerebral blood flow is diminished in neonates with severe congenital heart defects

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Licht, Daniel J., Wang, Jiongjiong, Silvestre, David W., Nicolson, Susan C., Montenegro, Lisa M., Wernovsky, Gil, Tabbutt, Sarah, Durning, Suzanne M. +6 more·2004·The Journal of Thoracic and Cardiovascular Surgery

Abstract

Objective Impaired neurodevelopmental outcome represents a major morbidity for survivors of infant heart surgery for congenital heart defects. Previous studies in these neonates have reported preoperative microcephaly, periventricular leukomalacia, and other findings. The hypothesis of this study is that preoperative cerebral blood flow is substantially diminished and might relate to preoperative neurologic conditions.Methods Preoperative brain magnetic resonance imaging was performed. Cerebral blood flow measurements in infants with congenital heart defects were obtained by using a novel noninvasive magnetic resonance imaging technique, pulsed arterial spin-label perfusion magnetic resonance imaging. Cerebral blood flow was measured before the operation under standard ventilation and repeated after increased carbon dioxide.Results A total of 25 term infants were studied. The average age at the time of the operation was 4.4 +/- 4.6 days. Congenital heart defects varied widely. Microcephaly occurred in 24% (6/25). Baseline cerebral blood flow was 19.7 +/- 9.2 mL . 100 g -1 . min -1 (8.0-42.2 mL . 100 g -1 . min -1 ). Five patients had cerebral blood flow measurements of less than 10 mL . 100 g -1 . min -1 . Mean hypercarbic cerebral blood flow increased to 40.1 +/- 20.3 mL . 100 g -1 . min -1 (11.4-94.0 mL . 100 g -1 . min -1 , P < .001). Pairwise analyses found that low hemoglobin levels were associated with higher baseline cerebral blood flow values ( P = .04). Periventricular leukomalacia occurred in 28% (7/25) and was associated with decreased baseline cerebral blood flow values ( P = .05) and a smaller change in cerebral blood flow with hypercarbia ( P = .003).Conclusions Structural brain abnormalities are common in these neonates before surgical intervention. Preoperative cerebral blood flow for this cohort was low and drastically reduced in some patients. Low cerebral blood flow values were associated with periventricular leukomalacia. Carbon dioxide reactivity was preserved but might be compromised by some aspects of the cardiac anatomy. The full spectrum of cerebral blood flow measurements with this technique in congenital heart defects and their long-term significance require continued investigation.

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  1. Detre JA, Samuels OB, Alsop DC, Gonzalez-At JB, Kasner SE, Raps EC. Noninvasive magnetic resonance imaging evaluation of cerebral blood flow with acetazolamide challenge in patients with cerebrovas- cular stenosis. J Magn Reson Imaging. 1999;10:870-5.
  2. Siewert B, Schlaug G, Edelman RR, Warach S. Comparison of EP- ISTAR and T2*-weighted gadolinium-enhanced perfusion imaging in patients with acute cerebral ischemia. Neurology. 1997;48:673-9.
  3. Ye FQ, Berman KF, Ellmore T, et al. H(2)(15)O PET validation of steady-state arterial spin tagging cerebral blood flow measurements in humans. Magn Reson Med. 2000;44:450-6.

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Authors
Licht, D. J., Wang, J., Silvestre, D. W., Nicolson, S. C., Montenegro, L. M., Wernovsky, G., Tabbutt, S., Durning, S. M., Shera, D. M., Gaynor, J. W., Spray, T. L., Clancy, R. R., Zimmerman, R. A., & Detre, J. A.
Affiliations
  • Children's Hospital of Philadelphia (US)
  • Hospital of the University of Pennsylvania (US)
Corresponding author
Licht, Daniel J.
Venue
The Journal of Thoracic and Cardiovascular Surgery
Publisher
Elsevier BV
Published
2004-12
Volume
128
Issue
6
Pages
841-849
ISSN
0022-5223 (ISSN-L)
OpenAlex
W2034628853
Cited by
332
References
29
Citations by year
2026: 10 · 2025: 6 · 2024: 12 · 2023: 15 · 2022: 10 · 2021: 19 · 2020: 12 · 2019: 18 · 2018: 18 · 2017: 18 · 2016: 13 · 2015: 10 · 2014: 17 · 2013: 20 · 2012: 20
FWCI
10.06
Type
journal article
Language
en
Open access
Locations
  • Journal of Thoracic and Cardiovascular Surgery (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • W. W. Smith Charitable Trust
  • Pfizer
Topics
  • Health Sciences › Medicine › Epidemiology › Congenital Heart Disease Studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Cardiovascular Conditions and Treatments
Keywords
congenital heart disease, neonates, cerebral blood flow, periventricular leukomalacia, microcephaly, hypercapnia, carbon dioxide reactivity, low hemoglobin, neurodevelopmental outcomes
MeSH terms
Brain, Female, Heart Defects, Congenital, Humans, Hypercapnia, Infant, Newborn, Leukomalacia, Periventricular, Magnetic Resonance Imaging, Male, Oxygen, Regional Blood Flow

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