A nurse is teaching a client who has active pulmonary tuberculosis about management of medication for the disease.
Which of the following statements is appropriate for the nurse to make?

Lisinopril is an angiotensin converting enzyme (ACE) inhibitor that is used to treat high blood pressure and heart failure. It works by relaxing the blood vessels and increasing the supply of blood and oxygen to the heart. However, one of the common side effects of lisinopril is hypotension, which means low blood pressure. Hypotension can cause dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position. Therefore, the nurse should monitor the client’s blood pressure when administering lisinopril and report any signs of hypotension to the doctor.

Choice A is wrong because tinnitus, which means ringing or buzzing in the ears, is not a common or serious side effect of lisinopril.

Tinnitus can be caused by other factors such as ear infections, loud noises, or medications such as aspirin or antibiotics.

Choice C is wrong because hypokalemia, which means low potassium levels in the blood, is not a common or serious side effect of lisinopril. In fact, lisinopril can cause hyperkalemia, which means high potassium levels in the blood, especially in patients with kidney problems or diabetes. Hyperkalemia can cause irregular heartbeats, muscle weakness, or numbness. Therefore, the nurse should monitor the client’s potassium levels when administering lisinopril and avoid giving potassium supplements or salt substitutes that contain potassium.

Choice D is wrong because bradycardia, which means slow heart rate, is not a common or serious side effect of lisinopril.

Lisinopril does not affect the heart rate directly, but it can lower the blood pressure and improve the heart function.

Bradycardia can be caused by other factors such as heart block, sinus node dysfunction, or medications such as beta blockers or calcium channel blockers.

This is a high level of potassium in the blood (the normal range is 3.5 to 5 mEq/L) and can be dangerous for the heart.

Triamterene is a potassium-sparing diuretic that prevents the body from losing too much potassium in the urine. It can cause hyperkalemia (high potassium), especially in people with kidney disease, diabetes, or severe illness. The nurse should check the potassium level before giving triamterene and hold the medication if it is above 5 mEq/L.

The other choices are incorrect because:

Choice A: Sodium 142 mEq/L.

This is a normal level of sodium in the blood (the normal range is 135 to 145 mEq/L) and does not require withholding triamterene. Triamterene can cause hyponatremia (low sodium) by increasing the excretion of sodium in the urine. The nurse should monitor the sodium level during triamterene therapy and report any signs of low sodium such as confusion, weakness, or seizures.

Choice B: BUN 16 mg/dL.

This is a normal level of blood urea nitrogen (BUN) in the blood (normal range is 7 to 20 mg/dL) and does not require withholding

triamterene. BUN is a measure of kidney function and can be elevated in kidney disease or dehydration. Triamterene can cause an increase in BUN by reducing the blood flow to the kidneys or by interacting with other medications that affect the kidneys. The nurse should monitor the BUN level during triamterene therapy and report any signs of kidney impairment such as decreased urine output, swelling, or nausea. •

Choice D: Albumin 4 g/dL.

This is a normal level of albumin in the blood (the normal range is 3.4 to 5.4 g/dL) and does not require withholding triamterene. Albumin is a protein that helps maintain fluid balance and transport substances in the blood. Triamterene does not affect albumin levels directly, but it can cause fluid loss or retention that may alter albumin levels indirectly. The nurse should monitor the albumin level during triamterene therapy and report any signs of fluid imbalance such as weight changes, edema, or shortness of breath.