QUESTION 11 You are taking care of an 3-month old infant who is recovering from

Question

QUESTION 11 You are taking care of an 3-month old infant who is recovering from surgery for pyloric stenosis. He received 0.7 mg of morphine intravenously 2 hours ago. The baby is soundly sleeping, and does not move much as you check vital signs. Respirations are 24/minute and 115 beats per minute (both of these are within normal range for a baby of this age). The pulse oximeter reads 98% on room air. The mother is worried about the baby's lack of responsiveness and worries that you have "overdosed" him. You tell the mother that her baby's vital signs are completely reassuring and that infants respond more intensely to opioids, because: a. nephrons are not fully functional until 2 years of age b. the blood-brain barrier is more permeable in infants c. an infant's gastric emptying time is prolonged and irregular d. the liver is non-functional in infants and first-pass effect on drugs is negligible

Explanation / Answer

Answer is option C

After administration of morphine to a six month old infant, 2hrs lTer, his vital signs are normal as it indicate no side effect or over dosage. The nurse should explain to the parents that's this is because the gastric emptying time is prolonged and irregular in infants, so they have intensive response to opoids.

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