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SIDS and hypoxanthine.

The study by Rognum and Saugstad concerning elevated hypoxanthine levels in the vitreous humor of victims of Sudden Infant Death Syndrome (SIDS) made a laudable attempt to correct for postmortem increases in this marker of hypoxia, but I am concerned that the authors have not sufficiently recognized some characteristics of SIDS that could have confounded their study.
 Because SIDS usually occurs unobserved during presumed sleep, with the body being discovered an undetermined number of hours later, the true postmortem interval is rarely known.