A nurse is caring for a client who has tuberculosis and is about to start taking pyrazinamide.
The nurse should identify that the client needs which of the following tests while taking this medication therapy?

The correct answer is C.

Choice A: Oxygen saturation of 95% The normal oxygen saturation level is between 95% and 100%. An oxygen saturation of 95% is within the normal range, so the nurse would not need to withhold furosemide for this reason.

Choice B: Serum sodium level of 140 mEq/L The normal serum sodium levels range from 135 to 145 mEq/L. A serum sodium level of 140 mEq/L is within the normal range, so the nurse would not need to withhold furosemide for this reason.

Choice C: Blood pressure of 80/40 mm Hg Furosemide is a potent diuretic that can lead to a significant depletion of electrolytes, which may lead to side effects such as muscle cramps and an irregular heartbeat. Low blood pressure (hypotension) is a potential side effect of furosemide. Normal blood pressure for adults is typically around 120/80 mm Hg. A blood pressure reading of 80/40 mm Hg is considerably lower than the normal range, indicating hypotension.

Choice D: Serum potassium level of 4.8 mEq/L The normal serum potassium levels range from 3.6 to 5.2 mEq/L. A serum potassium level of 4.8 mEq/L is within the normal range, so the nurse would not need to withhold furosemide for this reason.

Choice A rationale:

The nurse should not instruct the client to rest with the legs above heart level. While elevating the legs can be helpful for managing symptoms of peripheral artery disease (PAD), it is not a suitable choice for older adults, especially those with heart conditions. It can put additional strain on the heart and may not be appropriate for all clients. Elevation of the legs should be done with caution and under healthcare provider guidance.

Choice B rationale:

The nurse should not advise the client to wear antiembolic stockings during the day. Antiembolic stockings, also known as compression stockings, are primarily used for venous insufficiency and the prevention of deep vein thrombosis (DVT). They may not be effective or necessary for the management of PAD. It's important to tailor the instructions to the specific condition, and in the case of PAD, other strategies may be more appropriate.

Choice C rationale:

The correct answer is choice C. The nurse should instruct the client to adjust the thermostat so that the environment is warm. This is an important recommendation for clients with PAD because keeping the extremities warm can help improve circulation and reduce symptoms. Cold environments can exacerbate the vasoconstriction associated with PAD, leading to more discomfort. Maintaining a warm environment is a simple and effective measure for symptom management.

Choice D rationale:

The nurse should not recommend applying a heating pad on a low setting to help relieve leg pain. While heat can provide temporary relief for muscle pain, it may not be the best option for clients with PAD. Applying heat directly to the affected area can sometimes lead to burns or skin damage, especially in older adults who may have decreased sensation. Heat should be used cautiously, and other methods like keeping the environment warm are preferred.