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Sudden infant death syndrome: a literature review with chiropractic implications
B D Banks1, R W Beck, M Columbus
1Canadian Memorial Chiropractic College, Toronto, Canada.
Insights
Sudden infant death syndrome (SIDS) is a multifactorial phenomenon. Research suggests brainstem and spinal cord neurophysiology disturbances, particularly during critical developmental periods, may contribute to SIDS.
Area of Science:
- Pediatrics
- Neurology
- Pathology
Background:
- Sudden infant death syndrome (SIDS) is defined as the unexpected death of an infant, unexplained by autopsy.
- SIDS is considered a multifactorial condition rather than having a single cause.
- Recent research explores various hypotheses contributing to SIDS.
Purpose of the Study:
- To provide an overview of current research and hypotheses regarding sudden infant death syndrome.
- To highlight the role of neurophysiological disturbances in SIDS.
- To examine developmental and parturitional factors implicated in SIDS.
Main Methods:
- Review of recent developments in SIDS research.
- Analysis of hypotheses concerning SIDS etiology.
- Examination of neuroanatomical and neurophysiological factors.
Main Results:
- Functional disturbances in the brainstem and cervical spinal cord impacting respiratory neurophysiology are implicated in SIDS.
- Parturitional factors, including maternal and obstetrical influences, are considered.
- Immaturity in brainstem and cervical cord development, characterized by specific histological markers, is observed in SIDS cases.
Conclusions:
- Altered development of respiratory control centers, potentially due to genetic, biochemical, biomechanical, or traumatic factors, may contribute to SIDS.
- The critical developmental period of 2-4 months is highlighted.
- Spinal cord constriction and compression following birth trauma are potential contributing factors to SIDS.
Abstract:
Sudden infant death syndrome is the term applied to the sudden death of an infant or young child that is unexpected by history and for which a thorough postmortem examination fails to demonstrate an adequate cause of death. It is widely believed that sudden infant death syndrome is not an expression of a single cause and effect, but rather a multifactorial phenomenon. This paper gives an overview of recent developments in sudden infant death syndrome research presenting the various hypotheses regarding sudden infant death. Functional disturbances in the brainstem and cervical spinal cord areas related to the neurophysiology of respiration may contribute to the clinical findings associated with sudden infant death syndrome. Parturitional factors, which include maternal (labor and delivery) and extrinsic factors (obstetrical procedures) have received attention. Work has also been done on the development of those neuroanatomical structures associated with respiration. It is postulated that human development progresses through stages with a critical period at 2-4 months. Immaturity of the brainstem and cervical cord is characterized, histologically, by the presence of reticular dendritic spines on the neurons as well as a proliferation of astrocytes and glial cells. Any process, whether genetic, biochemical, biomechanical or traumatic, that alters normal development of the respiratory control centers related to spinal constriction and compression following birth trauma may be contributory to sudden infant death syndrome.