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.

Rationale: • Tachycardia: Tachycardia is a common early sign of both malignant hyperthermia and hypovolemic shock. In malignant hyperthermia, it results from excessive metabolic activity and catecholamine release. In hypovolemic shock, tachycardia is a compensatory response to decreased circulating volume to maintain perfusion. • Hypercapnia: Elevated PaCO2 occurs in malignant hyperthermia due to increased muscle metabolism and CO2 production. Hypercapnia is a hallmark early indicator of this condition. It is not typically observed in latex allergy or hypovolemic shock. • Urticaria: Urticaria (hives) is a classic manifestation of a latex allergy, reflecting an IgE-mediated hypersensitivity reaction. Clients may also experience pruritus or flushing. Urticaria is not characteristic of malignant hyperthermia or hypovolemic shock. • Muscle rigidity: Muscle rigidity, especially of the jaw (masseter), is a hallmark sign of malignant hyperthermia caused by an uncontrolled release of calcium in skeletal muscles triggered by certain anesthetic agents. Rigidity does not occur with latex allergy or hypovolemic shock. • Wheezing: Wheezing is consistent with latex allergy due to airway hypersensitivity and bronchospasm. Respiratory compromise in latex allergy can progress rapidly if untreated. Wheezing is not typically seen in malignant hyperthermia or hypovolemic shock.