How much zinc oxide powder and petroleum jelly are needed to prepare 80 g of a 2.5% zinc oxide ointment?
A. 2.5 g zinc oxide, 77.5 g petroleum jelly
B. 2 g zinc oxide, 78 g petroleum jelly
C. 2 g zinc oxide, 98 g petroleum jelly
D. 2.5 g zinc oxide, 97.5 g petroleum jelly
Answer: B
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The nurse performs Homans' maneuver by flexing the knee and sharply dorsiflexing the foot. A positive Homans' sign would be:
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