On the third postoperative day, a client who has had a hip replacement surgery becomes anxious and diaphoretic, and begins to experience auditory hallucinations. The client denies having any pain. The client's vital signs are pulse rate 125 beats/minute, respiratory rate 36 breaths/minute, and blood pressure 166/88 mm Hg. Which nursing intervention(s) should the nurse implement? (Select all that apply.)

1. The client is most likely experiencing compartment syndrome, which is a condition where increased pressure within a closed space compromises blood flow and tissue perfusion. Compartment syndrome can occur after a fracture, especially if a cast or splint is applied too tightly. Some of the signs and symptoms of compartment syndrome are severe pain, paresthesia, pallor, and pulselessness.
2. Two actions the nurse should take to address compartment syndrome are:
   • Elevate the extremity above the level of the heart to reduce swelling and improve venous return.
   • Remove the cast or loosen the dressing to relieve the pressure and restore blood flow. This may require notifying the physician or obtaining an order for bivalving or cutting the cast.
3. Two parameters the nurse should monitor to assess the client’s condition are:
   • Capillary refill of the affected fingers, which should be less than 3 seconds. A prolonged capillary refill indicates poor perfusion and tissue ischemia.
   • Blood pressure of the client, which should be maintained within normal limits. Hypotension can worsen the perfusion deficit and lead to tissue necrosis.

The client has inhaled smoke, which can cause respiratory problemssuch as airway obstruction, bronchospasm, and pulmonary edema. The client also has initial fluid shifts, which can lead to electrolyte imbalancesuch as hyponatremia, hyperkalemia, and metabolic acidosis.

Choice A: inhaled smoke - respiratory problems

This is a correct choice. Inhaled smoke can damage the respiratory system by causing inflammation, edema, and carbon monoxide poisoning.

Choice B: initial fluid shifts - electrolyte imbalance

This is a correct choice. Initial fluid shifts occur when fluid moves from the intravascular space to the interstitial space due to increased capillary permeability. This can result in electrolyte imbalance such as low sodium, high potassium, and low bicarbonate levels.

Choice C: increased cardiac output - high blood sodium levels

This is an incorrect choice. Increased cardiac output is not a condition that occurs in burn patients. High blood sodium levels are not a common finding in burn patients either. High blood sodium levels can occur due to dehydration or excessive sodium intake.

Choice D: decreased catecholamines - hypometabolism

This is an incorrect choice. Decreased catecholamines are not a finding in burn patients. Catecholamines are hormones that increase heart rate, blood pressure, and metabolism in response to stress. Burn patients have increased catecholamines due to pain and tissue injury. Hypometabolism is also not a condition that occurs in burn patients. Hypometabolism is a state of low metabolic rate that can occur due to starvation, hypothyroidism, or hypothermia. Burn patients have increased metabolism due to increased energy demands for wound healing and thermoregulation.