PAEA Surgery End Of Rotation (EOR) Practice Exam

What type of fluid is used after the first 24 hours following a burn injury?

1. Isotonic saline

2. Colloid

3. Hypertonic solution

4. Crystalloid

The correct answer is: Colloid

In the management of burn injuries, the type of fluid used after the initial resuscitation phase is crucial for maintaining hemodynamic stability and ensuring adequate tissue perfusion. After the first 24 hours, colloids can be used effectively, particularly in patients who exhibit ongoing fluid requirements or who have a significant loss of plasma proteins due to the burn injury. Colloids are solutions that contain larger molecules, such as proteins or starches, which help to maintain oncotic pressure in the blood vessels. This helps to draw fluid back into the vascular space and supports blood volume. The use of colloids can be particularly beneficial in managing patients with extensive burns, as they may lose a significant amount of plasma proteins through damaged skin. During the initial resuscitation phase within the first 24 hours, crystalloid solutions such as isotonic saline or lactated Ringer's are typically used to administer large volumes of fluid and restore intravascular volume quickly, minimizing the risk of shock. However, after this initial phase, specifically incorporating colloids allows for better long-term fluid management as the body's healing processes begin to take over. Overall, the shift to using colloids post-24 hours aligns with optimizing fluid therapy in burn care to enhance patient outcomes.