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Updated: Jul 31, 2026
11:56
Training Rats to Voluntarily Dive Underwater: Investigations of the Mammalian Diving Response
Published on: November 12, 2014
Sudden infant death triggered by dive reflex
L Matturri1, G Ottaviani, A M Lavezzi
1Lino Rossi Research Centre for the study and prevention of unexpected perinatal death and sudden infant death syndrome (SIDS), Institute of Pathology, University of Milan, 20122 Italy.
Journal of Clinical Pathology
|December 30, 2004
Summary
The dive reflex may contribute to sudden infant death syndrome (SIDS) by affecting cardiorespiratory control. This case study links SIDS to brainstem abnormalities and potential environmental factors like parental smoking.
Area of Science:
- Cardiology
- Neurology
- Pediatrics
Background:
- The dive reflex, an evolutionary trait from aquatic animals, is implicated in sudden infant death syndrome (SIDS) pathogenesis.
- Cold water immersion can trigger cardiac deceleration via the vagal dorsal nuclei and nucleus ambiguus.
Observation:
- A case of SIDS is presented, offering insight into the lethal potential of the dive reflex.
- Examination revealed severe bilateral hypoplasia of the arcuate nucleus and gliosis in other cardiorespiratory medullary nuclei.
- Early atherosclerotic lesions were observed in the coronary and cardiac conduction arteries.
Findings:
- The study identified specific neuropathological findings in a SIDS case, including arcuate nucleus hypoplasia and medullary gliosis.
- The presence of early atherosclerotic lesions suggests potential underlying vascular issues.
Implications:
- This case highlights the critical role of the dive reflex and associated neuropathology in SIDS.
- Parental cigarette smoking is discussed as a potential contributing factor to both arcuate nucleus hypoplasia and early coronary atherosclerosis.
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