How can a diver prevent air embolism?

Breathe normally during ascent is essential for preventing air embolism because it helps regulate the pressure of the air within the lungs. When a diver ascends, external pressure decreases, and if a diver holds their breath or ascends too quickly, the trapped air in their lungs can expand rapidly. This expansion can cause lung overexpansion injuries, potentially leading to air bubbles entering the bloodstream, known as an air embolism. By maintaining a steady and normal breathing pattern, divers ensure that they are exhaling appropriately and reducing the risk that air expands dangerously in their lungs.

In contrast, other approaches like avoiding deep diving or using compressed air tanks may help mitigate certain risks but do not directly address the specific pressure changes involved during ascent that can lead to embolism. Ascending rapidly is especially dangerous as it contradicts the safe ascent principles; it increases the likelihood of lung overexpansion injuries. Proper ascent rates and normal breathing are critical to diver safety and help ensure that oxygen levels and pressure are managed effectively, allowing for a safer dive experience.