Dialysis Technician Practice Exam

What does negative pressure refer to?

1. Fluid being pushed through a restriction

2. Pressure created in a vacuum

3. Pressure created when fluid is pulled through a restriction

4. Pressure maintained in a closed system

The correct answer is: Pressure created when fluid is pulled through a restriction

Negative pressure refers to a scenario where pressure within a system is lower than the surrounding atmospheric pressure. In the context of fluid dynamics, it often involves the movement of fluid through a restriction, such as in dialysis equipment. When fluid is pulled through a restriction, negative pressure is established, which helps to draw fluid towards the area of lower pressure. This concept is particularly relevant in medical applications like dialysis, where creating a negative pressure can facilitate the movement of blood or dialysis solution through various components, ensuring efficient fluid exchange and maintaining the necessary flow dynamics. Understanding negative pressure is crucial for dialysis technicians, as it affects how equipment is operated and how effectively treatments can be delivered to patients. For instance, managing negative pressure effectively can help prevent complications and ensure that the blood filtration process proceeds as intended.