The nurse is providing care for a client diagnosed with cardiovascular disease and hypertension who is complaining of chest pain. Which medication should the nurse administer?

Choice A reason: The client requires additional teaching if they state that they can have aspirin for pain after the bone marrow aspiration. Aspirin is a drug that inhibits platelet aggregation and increases the risk of bleeding. ¹ The client should avoid aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs) for at least 48 hours after the procedure. ² The client should use acetaminophen or another pain reliever that does not affect blood clotting.

Choice B reason: The client does not require additional teaching if they state that the nurse will check the puncture site at least every 4 hours after the procedure. This is a correct statement, as the nurse should monitor the site for signs of bleeding, infection, or hematoma. ² The nurse should also apply pressure and a sterile dressing to the site and instruct the client to keep it dry and clean for 24 hours.

Choice C reason: The client does not require additional teaching if they state that they will have some pain that is similar to a toothache. This is a correct statement, as the client may experience mild to moderate pain at the site of the aspiration, which may radiate to the hip or back. ² The pain usually subsides within a few hours or days.

Choice D reason: The client does not require additional teaching if they state that they understand that this is a sterile procedure. This is a correct statement, as the bone marrow aspiration is performed under sterile conditions to prevent infection. ² The nurse should wear gloves, gown, mask, and eye protection and use a sterile needle, syringe, and antiseptic solution.

Choice A reason: This is the correct answer. Tremors and twitching are signs of hypomagnesemia, which is a low level of magnesium in the blood. Magnesium is a mineral that is involved in many enzymatic reactions and neuromuscular functions. A low magnesium level can cause hyperexcitability of the nerves and muscles, leading to involuntary movements and spasms. Alcoholism can cause hypomagnesemia by reducing the absorption and increasing the excretion of magnesium.

Choice B reason: Positive Chvostek's sign is not a sign of hypomagnesemia, but of hypocalcemia, which is a low level of calcium in the blood. Calcium is another mineral that is important for the function of nerves and muscles. A low calcium level can cause tetany, which is a condition of sustained muscle contraction. Chvostek's sign is a test that involves tapping the facial nerve in front of the ear and observing for a twitching of the facial muscles. A positive Chvostek's sign indicates hypocalcemia, not hypomagnesemia.

Choice C reason: Decreased deep tendon reflexes are not a sign of hypomagnesemia, but of hypermagnesemia, which is a high level of magnesium in the blood. A high magnesium level can cause hyporeflexia, which is a reduced or absent response to stimuli. Magnesium has a sedative effect on the nerves and muscles, and can inhibit the transmission of impulses. Hypermagnesemia can be caused by excessive intake or impaired excretion of magnesium.

Choice D reason: Polyuria and flank pain are not signs of hypomagnesemia, but of kidney problems, such as infection, stones, or failure. Polyuria is the production of abnormally large amounts of urine, and flank pain is the pain in the side or back below the ribs. These symptoms can indicate damage or inflammation of the kidneys, which can affect the balance of fluids and electrolytes in the body. Hypomagnesemia does not directly cause polyuria or flank pain, but it can be a result of kidney dysfunction.