A nurse is providing discharge teaching to a client diagnosed with Bell's palsy. Which instruction should the nurse include to prevent complications?

Eye protection is the priority to prevent corneal injury from incomplete eyelid closure in Bell's palsy. Other options are either not specific to eye care (cold compresses, massage) or overly restrictive (avoiding all facial expressions).

Understanding Bell's Palsy and the Priority of Eye Protection

Bell's palsy is an acute, unilateral facial nerve (CN VII) paralysis that impairs motor function to the muscles of facial expression. A critical functional deficit in this condition is lagophthalmos, the inability to fully close the eyelid on the affected side. This disrupts the tear film distribution and the protective blink reflex, leaving the cornea vulnerable to exposure keratopathy. An audit of discharge practices for patients with facial nerve palsy (FNP) highlights that proper documentation and instruction on eye-protection measures are critical for patient safety and preventing vision-threatening complications ^[1]. Therefore, the nurse's discharge teaching must prioritize corneal health.

Analysis of Correct and Incorrect Options

The correct instruction is to use artificial tears and wear protective eyewear when outdoors.

* Correct (Option 2): This directly addresses the risk of corneal drying and injury. Artificial tears act as a lubricant substitute for the absent blink, maintaining a moist ocular surface. Protective eyewear (such as wrap-around glasses or a moisture chamber) creates a physical barrier against environmental irritants like wind, dust, and debris, which can abrade the exposed cornea. This aligns with the standard of care emphasized in the literature to prevent exposure keratopathy ^[1].

* Incorrect (Option 1): Applying cold compresses is not a primary intervention for preventing ocular complications. While cold application might theoretically provide comfort for inflammation, it does not address the core problem of corneal exposure and drying. The standard of care for eye protection in FNP involves lubrication and physical barriers, as identified in clinical audits ^[1].

* Incorrect (Option 3): Vigorous massage of paralyzed muscles is contraindicated. The denervated muscle fibers are not responsive to this stimulus, and aggressive manipulation will not accelerate nerve regeneration. It can, however, lead to muscle microtrauma, increased inflammation, and a higher risk of developing synkinesis, an abnormal, involuntary coupling of facial movements during the recovery phase.

* Incorrect (Option 4): Avoiding all facial expressions is an unrealistic and counterproductive instruction. Gentle, guided facial exercises are often a component of rehabilitation to maintain muscle tone and prevent contractures as nerve function returns. Complete immobility does not prevent ocular complications and may contribute to muscle stiffness.

Clinical Rationale and Priority Nursing Action

The primary complication in the acute phase of Bell's palsy is corneal ulceration and potential vision loss due to the eye's inability to close. The retrospective review of discharge summaries for ENT-related FNP patients confirms that the documentation of eye-protection measures—specifically lubrication and physical barriers—is a fundamental patient safety metric ^[1]. A nurse’s discharge teaching must therefore translate this clinical priority into clear, actionable instructions. The patient must understand that a dry, unprotected cornea can sustain damage rapidly and silently, making consistent eye care the most critical self-management strategy until the palsy resolves.