Nitroglycerin is also available in ointmen
题型：单项选择题
问题：
Nitroglycerin is also available in ointment or paste form. Before applying nitroglycerin ointment, what should the nurse do first
A. Cleanse the skin with alcohol where the ointment will be placed.
B. Obtain the client’s pulse rate and rhythm.
C. Remove the ointment previously applied."
D. Instruct the client to expect pain relief in the next 15 minutes.