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1019 Anaesthesia

Epidural anaesthesia is initiated in Primigravida at 38 weeks gestation, with a bolus of 15mg of Bupivacaine. Within few minutes, fetal heart rate monitoring shows variable decelerations. If scalp pH reveals fetal acidosis, compared with a normal pH, the anaesthetic absorbed by fetus will be present in

ALower concentration, most in ionized form
BHigher concentration, most in ionized form
CHigher concentration, most in unionized form
DUnchanged concentration, equal fraction of ionized and nonionized
Anaesthesia
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