Based on your understanding of the Case Study at the Chemistry Place, what do yo

Question

Based on your understanding of the Case Study at the Chemistry Place, what do you expect the blood pH of a patient who is suffering from HYPOVentilation (decreased breathing) to do? saturate increase decrease stay the same A fetal scalp blood pH test is performed on an expectant mother. Fetal hypoxia, which causes anaerobic glycolysis that results in excess production of LACTIC ACID, is the suspected culprit in fetal distress. If fetal hypoxia is present, which pH would we most expect to see from the test? 7.2 7.4

Explanation / Answer

hypoventilation is Chronic respiratory acidosis

Carbon dioxide partial pressure (PaCO2): if raised with acidosis then the acidosis is respiratory. If decreased with alkalosis then the alkalosis is respiratory. Otherwise any change is compensatory.

If chronic acidosis: pH falls by 0.03 and HCO3 rises by 2-4 mmol/L for each 10 mm Hg of PaCO2 above 40 mm Hg.

option decrease is correct

Fetal scalp pH testing is a procedure performed when a woman is in active labor to determine if the baby is getting enough oxygen.

In general, low pH suggests that the baby does not have enough oxygen. This may mean that the baby is not tolerating labor very well. The results of a fetal scalp pH sample need to be interpreted for each labor. The provider may feel that the results mean the baby needs to be delivered quickly, either by forceps or by cesarean section.

A fetal scalp blood pH level of less than 7.20 is considered abnormal.

option 7.2 is correct

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