Final answer:
Hypermagnesemia can cause hyporeflexia, muscle weakness, lethargy, bradycardia, and decreased respiratory rate.
Step-by-step explanation:
Hypermagnesemia is a condition characterized by high levels of magnesium in the blood. When assessing a client with hypermagnesemia, the nurse should expect several manifestations. One of these manifestations is hyporeflexia or decreased deep tendon reflexes. This means that the client's reflexes will be sluggish or absent. Other manifestations of hypermagnesemia may include muscle weakness, lethargy, bradycardia (slow heart rate), and decreased respiratory rate.