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Re: cord pH and "birth asphyxia"From: Ealgail@aol.comFri Aug 30 21:46:58 1996
In a message dated 96-08-29 12:22:32 EDT, you write:
>Unless, as I said a while ago, the baby has been resuscitated in utero, Perhaps you mean there was prior "injury" from which the fetus recovered to have a normal pH at birth. There is the theory that a fetus can have a serious hypoxic or asphyxia insult in utero sufficient to cause neurologic damage...(of course, we would never know if there was no neurologic sequelae) at some point in pregnancy, and then recover so that birth values look normal. If that does occur, then it still means that the perinatal (birth events) period was normal and rules out hypoxia or asphyxia during the birth process. So, I think the statement remains correct. The purpose of a cord blood gas value is to evaluate the metabolic status during the birth process. We cannot control or effectively evaluate prior events during unmonitored early pregnancy. But, the medico-legal climate is such that neurologic sequelae are almost always blamed on birth events. The cord blood pH, if normal, can rule out perinatal hypoxia or asphyxia during the birth process as a cause for subsequent neurologic damage. Linda Morrison-Boczar, M.D. Asst. Prof. IU
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