Central nervous system consequences in infants of cardiac surgery using deep hypothermia and circulatory arrest

James A Brunberg, E. L. Reilly, D. B. Doty

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78 Citations (Scopus)

Abstract

Preoperative and postoperative neurological evaluation of 22 infants (4 days to 24 mth old, 2.7 to 9.7 kg) having correction of congenital cardiac anomalies by deep hypothermia (14° to 23°C) and circulatory arrest (10 to 57 min) revealed only 6 normal clinical neurological examinations prior to surgery. Sixteen patients had neurological defects, delayed psychomotor development, or muscular hypotonia. Seizures occurred in 2 and choreo athetosis in 4 of 22 survivors 4 to 6 days after surgery and varied in severity and duration. Abnormal electroencephalograms (EEG) 1 wk after surgery in 6 patients did not necessarily correlate with clinical defects. Continuous EEG during 14 operations showed decreased voltage and frequency with hypothermia, but cerebral activity was not lost prior to circulatory arrest. Low voltage (1 to 4 μv) activity persisted in 8 patients through the arrest period. Examination 2 to 15 mth postoperatively showed that only 1 of the 18 patients had significant persistent dyskinesias, and the EEG was normal in all except 3. Developmental delay and/or hypotonia persisted in 1/2 the patients, but the degree was often less marked. Cerebral metabolism is altered by deep hypothermia and circulatory arrest, and neurological defects may follow. Fortunately, significant persistent neurological damage is unusual (1/22 = 4%).

Original languageEnglish (US)
JournalCirculation
Volume50
Issue number2 .Sup
StatePublished - 1974
Externally publishedYes

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Hypothermia
Thoracic Surgery
Central Nervous System
Electroencephalography
Muscle Hypotonia
Athetosis
Dyskinesias
Neurologic Examination
Ambulatory Surgical Procedures
Survivors
Seizures

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine

Cite this

Central nervous system consequences in infants of cardiac surgery using deep hypothermia and circulatory arrest. / Brunberg, James A; Reilly, E. L.; Doty, D. B.

In: Circulation, Vol. 50, No. 2 .Sup, 1974.

Research output: Contribution to journalArticle

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