In addition, these babies were found to have 22 percent lower tryptophan hydroxylase level, which is the enzyme that produces serotonin, and the levels of binding in serotonin receptors were 50 percent lower in the babies who died of SIDS.
In newborns, the most common cause of cardiopulmonary arrest is respiratory failure caused by sudden infant death syndrome (SIDS), airway obstruction (usually from inhalation of a foreign body), sepsis, neurologic disease, or drowning.
To prevent suffocation and reduce the likelihood of SIDS, remove all soft, loose and fluffy bedding from the baby's sleep area -- this includes pillows, quilts, comforters, bumper pads, sheepskins, stuffed toys and other soft products.
Nevertheless, the divorce rate among SIDS parents appears to be no higher than that for the general population, and in one survey half the respondents reported that their marriages had ultimately been strengthened by the experience.
Although investigators are still not sure whether the immediate cause of SIDS deaths is due to respiratory failure or cardiac arrest, patterns of infant sleep, breathing, and arousal are a major focus of research in the early 2000s.