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학습 자료 둘러보기 →| Concept | Key Points |
|---|---|
| Sensorineural Hearing Loss | Permanent damage to hair cells in cochlea or auditory nerve. Causes: aging (presbycusis), noise exposure, ototoxic drugs. Characterized by difficulty understanding speech, especially in noise. |
| Nursing Priority (Discharge) | Safety & Effective Communication. Empower client with compensatory strategies to prevent injury and social isolation. |
| Core Teaching Strategies | Face-to-face communication, good lighting, reduce background noise, speak clearly (not loudly), use written instructions, encourage hearing aid use. |
| Critical Safety Teaching | NEVER insert objects (cotton swabs, bobby pins) into ear canal. Regular hearing check-ups. Alert to hazards (smoke alarms with strobe lights). |
| Aspect | Sensorineural Hearing Loss | Conductive Hearing Loss |
|---|---|---|
| Site of Problem | Inner ear (Cochlea) or Auditory nerve (CN VIII) | Outer or Middle ear |
| Common Causes | Aging (Presbycusis), Noise exposure, Meniere's disease, Ototoxicity (e.g., gentamicin) | Cerumen impaction, Otitis media, Otosclerosis, Perforated tympanic membrane |
| Sound Perception | Sounds are muffled/distorted; difficulty understanding speech ("I can hear you but not understand you"). | Sounds are generally softer; hearing may improve in noise (paracusis willisiana). |
| Weber Test | Sound lateralizes to the better ear. | Sound lateralizes to the poorer ear. |
| Rinne Test | Air conduction (AC) > Bone conduction (BC) but both are reduced (Positive Rinne). | Bone conduction (BC) > Air conduction (AC) (Negative Rinne). |
| Primary Nursing Focus | Communication strategies, hearing aid optimization, safety. | Removal of obstruction (e.g., cerumen), treating infection, post-op care for procedures like tympanoplasty. |
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