Critical Care Registered Nurse (CCRN) Practice Exam

What indicates potential cerebellar ataxia during the Romberg Test?

1. Absence of swaying with eyes closed

2. Excessive downward drifting of arms

3. Inability to maintain balance with eyes closed

4. Swaying only occurring with eyes open

The correct answer is: Inability to maintain balance with eyes closed

Cerebellar ataxia is characterized by a lack of coordination and balance, often evident when a person is unable to maintain stability. The Romberg Test is a clinical assessment used to evaluate balance and proprioception, primarily assessing the integrity of the dorsal columns of the spinal cord and the vestibular system. When performing the Romberg Test, a significant indicator of potential cerebellar ataxia is the inability to maintain balance with the eyes closed. This situation suggests that the individual relies heavily on visual input to maintain their balance. When the eyes are closed, and balance is not maintained, it implies that the proprioceptive or vestibular inputs are compromised or that there is dysfunction in the cerebellum itself. This response reflects the core function of the cerebellum in coordinating voluntary movements and maintaining posture. When the cerebellum is impaired, the ability to balance without visual support diminishes, leading to loss of stability and indicating possible cerebellar ataxia. Understanding these aspects is critical for assessing a patient's neurological status and guiding further diagnostic or therapeutic interventions.