Rosh Emergency Medicine Practice Test

What is the estimated percentage of total body surface area burned in a patient with superficial partial-thickness burns covering various body areas?

1. 37%

2. 40.5%

3. 41.5%

4. 46%

The correct answer is: 41.5%

Superficial partial-thickness burns involve the epidermis and part of the dermis and are characterized by their red, blistered appearance and significant pain. When estimating the total body surface area (TBSA) burned, various methods are used, such as the Rule of Nines or the Lund and Browder chart, which provide a systematic way of calculating the extent of burns based on body regions. In adults, the Rule of Nines allocates percentages to different body areas to facilitate quick assessment in emergency situations. When considering superficial partial-thickness burns, especially if they cover multiple regions (for example, the anterior trunk, one arm, and a portion of a leg), it’s important to sum these affected areas accurately. The answer indicating an estimated 41.5% TBSA for superficial partial-thickness burns typically aligns with scenarios where multiple areas have sustained burns. This percentage takes into account common areas of involvement which could be more significant in expansive or severe burn cases, leading to a comprehensive understanding of how burn injuries can affect total body surface area. Being able to accurately estimate the TBSA burned is crucial for appropriate fluid resuscitation and management of burn patients, thus highlighting the importance of this calculation in emergency medicine practice.