Sudden infant death syndrome: a possible primary cause

Area of Science:

• Toxicology
• Environmental Health
• Pediatrics

Background:

• Sudden Infant Death Syndrome (SIDS) remains a significant concern in infant mortality.
• The presence of phosphorus and antimony compounds in cot mattress fire retardants is widespread.
• The fungus Scopulariopsis brevicaulis is known to inhabit mattress materials.

Purpose of the Study:

• To investigate the hypothesis linking phosphine, arsine, and stibine poisoning to SIDS.
• To explore the role of mattress materials and fungal activity in generating toxic gases.
• To examine the correlation between SIDS incidence and the use of specific fire retardants.

Main Methods:

• Analysis of mattress materials for phosphorus and antimony compounds.
• Investigation of fungal (Scopulariopsis brevicaulis) presence and gas generation potential in mattress samples.
• Correlation analysis between SIDS rates and the historical use of fire retardants in England and Wales.

Main Results:

• Mattress materials contain phosphorus or antimony compounds used as fire retardants.
• Scopulariopsis brevicaulis can generate phosphines, arsines, and stibines from these materials under conditions of warmth and moisture.
• An increase in SIDS incidence in England and Wales correlated with increased use of these fire retardants.

Conclusions:

• Toxic gases (phosphines, arsines, stibines) generated from mattress fire retardants by fungi are a potential cause of SIDS.
• Anticholinesterase poisoning and cardiac failure in infants may result from exposure to these gases.
• Prone sleeping and overwrapping are identified as contributory factors exacerbating the risk.