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201021U. S. Special Operations Command (USSOCOM)

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BAROTRAUMA<br />

SPECIAL CONSIDERATIONS:<br />

1. Pulmonary Over-Inflation Syndrome (POIS) may occur from ascent from depth if compressed air<br />

was used or exposure to blast overpressure.<br />

2. The most commonly affected site is the middle ear and tympanic membrane, but paranasal<br />

sinuses and teeth may be affected.<br />

3. Pulmonary barotrauma occurs when compressed air is breathed at depth followed by ascending<br />

with a closed airway (i.e. breath-holding), and can cause pneumothorax or arterial gas embolism.<br />

SIGNS AND SYMPTOMS:<br />

1. Pain in the ear(s), sinuses, teeth.<br />

2. Pulmonary over-inflation syndrome may present with chest pain, dyspnea, mediastinal emphysema,<br />

subcutaneous emphysema, pneumothorax, and arterial gas embolism (AGE).<br />

.<br />

MANAGEMENT:<br />

1. Middle ear<br />

A. If a tympanic membrane rupture is present or suspected, protect the ear from water or further<br />

trauma.<br />

B. Moxifloxacin (Avelox) 400mg PO qd if contamination is suspected.<br />

C. Pseudoephedrine (Sudafed) 60mg PO q 4 – 6 hr prn<br />

D. DO NOT use ear drops.<br />

E. Refer to higher level of care when feasible.<br />

2. Paranasal Sinus barotraumas.<br />

Pseudoephedrine (Sudafed) 60mg PO q 4 - 6 hr prn<br />

Pulmonary barotraumas to include subcutaneous emphysema:<br />

A. If no respiratory distress, monitor patient closely. Use pulse oximetry if available<br />

B. If respiratory distress occurs – Treat per Spontaneous Pneumothorax Protocol.<br />

3. If arterial gas embolus is suspected, administer 100% oxygen and 1 liter normal saline IV<br />

150cc/hr. Urgent evacuation to recompression chamber. If an unpressurized airframe is used, avoid<br />

altitude exposure greater than 1000ft.<br />

4. Treat per Pain Management Protocol. (Avoid narcotics if recompression is anticipated.)<br />

DISPOSITION:<br />

1. Urgent Evacuation for cerebral arterial gas embolus or pneumothorax with respiratory distress,<br />

2. Mild to moderate middle ear, sinus, or pulmonary barotraumas without respiratory distress,<br />

observation and Routine evacuation.<br />

3. Routine evacuation for consultation for Tympanic Membrane rupture.<br />

A14<br />

Journal of <strong>Special</strong> <strong>Operations</strong> Medicine

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