单选题 The nurse is instructing a client with angina about sublingual nitroglycerin. Which of the following points should be included?
A. The shelf life of nitroglycerin is long, it keeps for up to 2 years.
B. Store the tablets in a tight, light-resistant container.
C. Use the tablets only when the pain is severe.
D. The drug will cause increased urine output.

【正确答案】 B

【答案解析】Clients should be instructed to keep nitroglycerin in a tightly closed, dark container and to replenish it frequently because it deteriorates rather rapidly.