A nurse is preparing to administer 2.5 mL of medication intramuscularly to an adult client.
Which of the following is the safest site for the nurse to use?

A. Hypotension occurs because hypermagnesemia causes vasodilation, which lowers blood pressure. Magnesium acts as a smooth muscle relaxant, decreasing vascular resistance and contributing to hypotension. This is a common clinical finding when magnesium levels exceed the normal range.

B. Tachycardia is not expected with hypermagnesemia. Elevated magnesium levels depress the heart's electrical activity, leading to bradycardia (slow heart rate) instead of tachycardia.

C. Muscle cramps are typically associated with hypomagnesemia, which increases neuromuscular excitability. In hypermagnesemia, neuromuscular function is suppressed, leading to muscle weakness rather than cramps.

D. Hyperreflexia is a symptom of hypomagnesemia, not hypermagnesemia. In hypermagnesemia, neuromuscular activity is depressed, resulting in diminished or absent deep tendon reflexes

A. Insert an indwelling catheter if the client has not voided in 3 hr: This task is within the LPN’s scope of practice, including sterile procedures such as catheterization. The RN retains the responsibility to evaluate the client’s overall status but may direct the LPN to insert a catheter under specific conditions.
B. Obtain the abdominal girth now and every 4 hr: This is a non-sterile, routine measurement and would be more appropriately assigned to assistive personnel rather than an LPN.
C. Assess and document the level of consciousness every hour: Assessment of neurological status requires RN-level clinical judgment, particularly in clients at risk for hepatic encephalopathy.
D. Measure the amount of gastric drainage every 2 hr: Although within an LPN’s scope, this task is repetitive and routine and may be more appropriate for assistive personnel under supervision.