Chapter 4- Diving Physiology Diving Physiology 123 Ruptured Alveoli First Aid: Administer 100% 02 and transport to a hyperbaric treatment facility. Give artificial respiration or CPR if needed. Prevention: Breathe normally at all times when breathing compressed air. Don’t hold your breath on ascent. Ascend slowly. Don’t smoke. Avoid secondhand smoke. Get regular checkups. Mediastinal Emphysema Diving Emphysemas Emphysema is an abnormal distention of body tissues with air. The space in your chest between your lungs and sternum is called the mediastinum. Gas in this space is called mediastinal emphysema. Gas in your mediastinum may rise to the skin under your neck, FIGURE 4-12. LUNG INJURIES. Lung Overpressure Injuries Brain Carotid Artery Heart Collapsed Lung Pleural Cavities Air Bubbles Pneumothorax Subcutaneous Emphysema
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