1. OTITIS EXTERNA AND DIVING Or Swimmers Ear

2. Otitis Externa External ear infection 2 nd most common diving medical problem Cause – Bacteria normally found in ear canal – NOT from bacteria in water

3. Otitis Externa With frequent immersion: – Water swells the cells lining the ear canal – Cells pull apart – Surface bacteria get underneath skin – PH change from slightly acidic to base – Warm, moist environment for growth

4. Otitis Externa Symptoms – Itchy ear canal – Thin, white discharge – Pain/inflamation – Lymph node swelling/pain – Pain with moving jaw

5. Otitis Externa Prevention – Topical ear solution (Bausch & Lomb) 2% acetic acid/aluminum acetate Acid – retards bacterial growth Astringent – draws excess water out of cells – Use at least twice daily – Solution must stay in 5 minutes*

6. Otitis Externa Prevention – Avoid cerumen buildup Periodic flush with water Do NOT use Q-tips OTC solutions – Avoid alcohol-based drops Irritating to ear canal Destroys protective barrier

7. Otitis Externa Treatment – Requires physician evaluation – Cleansing of external ear canal – Topical antibiotics – Systemic antibiotics – severe cases – Pain medication – No diving for 5-7 days