Certified Neuroscience Registered Nurse (CNRN) Practice Exam

What is a common manifestation related to carotid dissection following a neck injury?

1. Increased intraocular pressure

2. Partial Horner's syndrome

3. Vertigo

4. Facial asymmetry

The correct answer is: Partial Horner's syndrome

A common manifestation related to carotid dissection following a neck injury is partial Horner's syndrome. This condition arises due to the disruption of the sympathetic nerve pathway to the eye, which can occur with a carotid artery dissection. When the sympathetic fibers are affected, the typical signs can include ptosis (drooping of the eyelid), miosis (constricted pupil), and anhidrosis (lack of sweating) on the affected side. However, in cases of partial Horner's syndrome, not all these signs may be present, which is why it is termed “partial.” The relationship between carotid dissection and Horner's syndrome is essential for diagnosis because these findings can help healthcare professionals recognize vascular injuries that may not be immediately apparent, and they can guide further diagnostic imaging or intervention. Understanding this manifestation is critical for nursing practice, as recognizing the signs of possible carotid dissection can lead to timely treatment and improved outcomes for patients following neck injuries.