Anesthesia Technician Practice Exam

What role do colloids play in fluid management during surgery?

1. They provide essential nutrients

2. They maintain blood pressure

3. They lubricate joints

4. They enhance muscle performance

The correct answer is: They maintain blood pressure

Colloids play a significant role in fluid management during surgery primarily by maintaining blood pressure. They consist of larger molecules that do not easily pass through the capillary walls, which helps to increase the oncotic pressure within the vascular system. This increase in oncotic pressure aids in retaining fluid in the bloodstream, effectively expanding blood volume and improving hemodynamic stability. In surgical contexts, maintaining adequate blood pressure is crucial, especially during procedures that may lead to significant blood loss. By providing volume expansion and helping to stabilize blood pressure, colloids can enhance circulation and ensure that vital organs receive adequate perfusion. The incorrect options highlight functions that are not associated with colloids in the context of fluid management. While essential nutrients are important for overall health, they are typically provided through different means, not direct fluid management during surgeries. Lubricating joints and enhancing muscle performance relate more to physiological functions outside of the fluid management scope, particularly resistant to the context of surgical interventions where blood volume and pressure are the main concerns.