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Necrotizing enterocolitis after cardiac surgery: a local ischemic lesion?
American Journal of Surgery
|March 1, 1977
Summary
Necrotizing enterocolitis (NEC) can occur after hypothermia and circulatory arrest, even in low-risk newborns. This suggests local ischemia due to splanchnic vasoconstriction may cause NEC.
Area of Science:
- Neonatal Medicine
- Pediatric Surgery
- Critical Care
Background:
- Necrotizing enterocolitis (NEC) is a significant challenge in neonates, particularly premature infants.
- Established risk factors exist, but the precise pathogenesis remains debated.
- This study examines a unique presentation of NEC in closely monitored, low-risk infants.
Purpose of the Study:
- To investigate the occurrence of NEC following hypothermia and total circulatory arrest.
- To explore potential etiologic factors in a controlled clinical setting.
- To propose a mechanism for NEC development in this specific context.
Main Methods:
- Case series of three neonates who developed NEC.
- Detailed clinical observation and monitoring.
- Analysis of clinical events preceding NEC onset, focusing on hypothermia and circulatory arrest.
Main Results:
- All three patients developed NEC after experiencing hypothermia and total circulatory arrest.
- This complication occurred despite close monitoring and absence of typical high-risk factors.
- Observed selective ischemic organ damage suggested inadequate local perfusion.
Conclusions:
- Hypothermia and total circulatory arrest may precipitate NEC in neonates.
- Splanchnic vasoconstriction secondary to sympathetic stimulation is postulated as a contributing factor to local ischemia.
- These findings highlight a novel potential pathway for NEC development.