Hypothesis: new concepts concerning the pathophysiology of the sudden infant death syndrome due to magnesium deficiency shock.
1992
: There appear to be many contributing factors to sudden infant death syndrome (SIDS). One final common pathway that may explain some cases of SIDS is presented as a hypothesis: SIDS occurs as a shock-like event in a stressed infant with congenital or acquired magnesium deficiency with respect to calcium, or with genetically determined high magnesium requirements. Increased calcium and stress-related catecholamines favour platelet aggregation and release of mediators, chief of which appears to be thromboxane A2 (TXA2). TXA2, a major vasoconstrictor, bronchoconstrictor, and platelet aggregator is relatively unopposed during shock by prostacyclin, a vasodilator, bronchodilator, and platelet disaggregator which normally counterbalances its effects. The shock episode is self-limited. Infants who recover have suffered an apparent life threatening event (ALTE); those who die have insufficient pathology to explain the cause of death; the diagnosis is SIDS.
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