Other Causes
A sort of "blue baby syndrome" can also be caused by Methemoglobinemia. It is believed to be caused by high nitrate contamination in ground water resulting in decreased oxygen carrying capacity of hemoglobin in babies leading to death. The groundwater is thought to be contaminated insignificantly by the person by leaching of nitrate generated from fertilizer used in agricultural lands and waste dumps. It may also be related to some pesticides (DDT, PCBs etc.), which cause ecotoxicological problems in the food chains of living organisms, increasing BOD, which kills aquatic animals.
Other insults in neonates, such as respiratory distress syndrome, can also produce a "blue baby syndrome," although like methemoglobinemia, these are not structural lesions and are not regarded by most doctors as true "cyanotic lesions."
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