A nurse is caring for a client who is postoperative following a right hip arthroplasty. For each assessment finding, click to specify if the finding is consistent with Malignant hyperthermia, Latex allergy, or Hypovolemic shock. Each finding may support more than 1 disease process.

Urticaria: Urticaria (hives) is a hallmark sign of an allergic reaction, particularly latex allergy, and typically appears quickly following exposure to allergens. It is not seen in malignant hyperthermia or hypovolemic shock. Wheezing: Wheezing can occur in latex allergy due to bronchospasm or airway edema. While respiratory compromise may happen in malignant hyperthermia, it is typically due to muscle breakdown and CO2 retention, not bronchospasm. Wheezing is not expected in hypovolemic shock. Muscle rigidity: Generalized rigidity, especially of the jaw (masseter spasm), is a key early sign of malignant hyperthermia, a life-threatening reaction to certain anesthetics. It is not a symptom of latex allergy or hypovolemic shock. Hypercapnia: An elevated PaCO₂ is an early, sensitive marker of malignant hyperthermia, resulting from increased CO₂ production due to sustained muscle contraction. This does not occur in latex allergy or hypovolemic shock. Tachycardia: Elevated heart rate can be seen in all three conditions: in malignant hyperthermia due to increased metabolic demand, in latex allergy due to anaphylactic reaction, and in hypovolemic shock as a compensatory response to fluid loss.