Question

The most common cause of death in thermal burns is

• A. Convulsion
• B. Aspiration Pneumonia
• C. Hypovolemic shock
• D. Arrhythmias

Hint:

Think about what happens to fluid balance in the first hours after a large burn.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
The question asks about the most common cause of death in patients with thermal burns.

Step 2: Key Concept or Approach:
In extensive thermal burns, massive fluid loss occurs through the damaged skin barrier and increased capillary permeability, causing a rapid shift of plasma into the interstitial space. This produces profound intravascular volume depletion in the first 24-48 hours after injury, which is the leading cause of early death in burn patients unless corrected with aggressive fluid resuscitation.

Step 3: Working Through the Options:
Convulsion is not a typical direct cause of death in burns unless there is an associated head injury or severe electrolyte derangement. Aspiration pneumonia can complicate inhalational injury or a debilitated patient but is not the leading cause of early death. Arrhythmias can occur with electrical burns or severe electrolyte shifts but are not the most common overall cause. Hypovolemic shock from massive plasma and fluid loss through the burn wound is the classic and most common cause of early death in thermal burns, which is why burn resuscitation protocols such as the Parkland formula focus on aggressive fluid replacement in the first day.

Step 4: Conclusion:
The correct answer is hypovolemic shock, the dominant cause of early death in significant thermal burns.