A nurse is caring for a client who was admitted with major burns to the head, neck, and chest. Which of the following complications should the nurse identify as the greatest risk to the client?

Choice A rationale Hypothermia is a significant concern for burn patients because the skin, which regulates body temperature, is destroyed. Large surface area burns lead to massive heat loss through evaporation and radiation. However, while hypothermia can complicate recovery and impact coagulation, it is not the most immediate life-threatening risk in the early phase of burns involving the head and neck. Airway integrity always takes precedence over thermoregulation in the primary survey of a trauma or burn patient. Choice B rationale Hyponatremia often occurs in the emergent phase of burns as fluid shifts from the intravascular space to the interstitial space and sodium follows. Normal serum sodium is 135 to 145 mEq/L. While electrolyte imbalances can cause neurological issues and cardiac instability, they are manageable through carefully calculated fluid resuscitation. Compared to an obstructed airway, which can cause death within minutes, hyponatremia is a slower process that the medical team can monitor and correct over several hours. Choice C rationale Airway obstruction is the greatest risk for a client with burns to the head, neck, and chest. Inhalation of hot gases or smoke causes thermal injury and edema to the mucosal lining of the upper airway. Because the neck and chest are involved, external swelling can also compress the trachea. Rapidly developing edema can close the airway completely, making intubation difficult or impossible. Ensuring a patent airway is the priority according to the ABCs of emergency care. Choice D rationale Fluid imbalance is a major complication of major burns due to increased capillary permeability, leading to "third spacing" and hypovolemic shock. Fluid resuscitation is critical to maintain organ perfusion. However, even with profound fluid loss, the immediate threat of asphyxiation from airway edema in head and neck burns is more acute. While fluid replacement is started immediately, the nurse must first ensure the patient can breathe, as respiratory failure will occur faster than circulatory collapse from fluid shifts.