Critical Care Registered Nurse (CCRN) Practice Exam

What is a primary sign of excessive cerebrospinal fluid (CSF) drainage?

1. Hemiparesis

2. Headache

3. Amnesia

4. Vomiting

The correct answer is: Headache

A primary sign of excessive cerebrospinal fluid (CSF) drainage is a headache. When too much CSF is removed, it can lead to decreased pressure in the cranial cavity, resulting in a condition known as low-pressure or postural headache. This type of headache is often characterized by a throbbing pain that worsens when the patient is upright and improves when lying down. It may also be accompanied by neck stiffness and possibly other symptoms related to low CSF pressure. The connection between CSF volume and intracranial pressure is crucial to understand in critical care nursing. Evaluating the patient's history and symptoms following CSF drainage is essential, as headaches can signify potential complications such as over-drainage or even risk of herniation if not monitored carefully.