Certified Neuroscience Registered Nurse (CNRN) Practice Exam

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Which method is recommended for follow-up in patients with idiopathic intracranial hypertension?

  1. Magnetic resonance imaging

  2. Quantitative visual field examination

  3. Pneumocephalography

  4. Visual acuity testing

The correct answer is: Quantitative visual field examination

Quantitative visual field examination is the recommended follow-up method for patients with idiopathic intracranial hypertension. This condition can lead to changes in the optic nerve and result in visual field deficits, thus regular assessment of the visual fields is critical for monitoring any progression of the disease. By quantifying these changes, healthcare providers can assess the impact of intracranial pressure on the patient’s visual function and make necessary adjustments to the treatment plan. In contrast, while imaging studies like magnetic resonance imaging may provide valuable information about the brain's structure, they do not specifically assess the visual function or the effects of increased intracranial pressure on eyesight. Pneumocephalography involves introducing air into the cranial cavity and is not commonly used today due to its invasive nature and the risks associated with the procedure. Visual acuity testing measures sharpness of vision but does not fully evaluate the visual field, which is essential in detecting and monitoring the specific deficits associated with idiopathic intracranial hypertension.

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