A neonate weighing 7.5 pounds is experiencing seizures secondary to maternal drug use during pregnancy and is prescribed IV phenytoin, which cannot exceed 3 mg/kg/minute. The safe dose for this neonate is:
a. 10 mg/kg/min. c. 10 mg/min.
b. 15 mg/min. d. 21.5 mg/min.
ANS: C
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A Incorrect: This changes the safe administration rate, which cannot be done.
B Incorrect: This is an excessive rate.
C Correct: 7.5 divided by 2.2 = 3.4 kg X 3 mg/min = 10.2 = 10 mg/min.
D Incorrect: This is an excessive rate.
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