The nurse is caring for a client who just returned to the nursing unit following a cardiac angiogram and stent insertion. Which action should the nurse implement first?

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.

Choice A reason: The nurse should not encourage vigorous tooth brushing with a soft bristle toothbrush. Thrombocytopenia is a condition where the blood has a low number of platelets, which are cells that help with clotting. ¹ Vigorous tooth brushing can cause bleeding of the gums, which can be hard to stop in a client with thrombocytopenia. The nurse should advise the client to use a soft sponge or swab to clean the teeth and mouth gently.

Choice B reason: The nurse should avoid needle sticks or other invasive procedures as much as possible. Needle sticks and other invasive procedures can cause bleeding, bruising, or infection in a client with thrombocytopenia. ¹ The nurse should use the smallest gauge needle possible, apply pressure for at least 10 minutes after the procedure, and monitor the site for any signs of bleeding or infection. The nurse should also avoid unnecessary blood draws or injections, and use non-invasive methods whenever possible.

Choice C reason: The nurse should not hold all stool softeners and laxatives until otherwise ordered. Stool softeners and laxatives can help prevent constipation and straining, which can cause hemorrhoids or anal fissures in a client with thrombocytopenia. ¹ The nurse should encourage the client to take stool softeners and laxatives as prescribed, drink plenty of fluids, and eat high-fiber foods to promote regular bowel movements.

Choice D reason: The nurse should not obtain a low temperature every 8 hours. A low temperature is not a relevant or accurate measurement for a client with thrombocytopenia. The nurse should obtain a normal temperature, which is around 98.6°F (37°C), using a non-invasive method, such as an oral or tympanic thermometer. ² The nurse should avoid using a rectal thermometer, as it can cause bleeding or infection in a client with thrombocytopenia.