08/18/2026
Did you know that fluid in the lungs during a dive can actually come from inside the body, rather than swallowed water?
This condition is called Immersion Pulmonary Edema (IPE), and spreading awareness about it isn't about scaring anyone away from the water, it's about keeping our swimming, snorkeling, and diving community safe, informed, and prepared.
Here is what every water enthusiast should know:
What is IPE?
IPE happens when fluid leaks from the bloodstream directly into the lungs' air sacs (alveoli) during immersion, disrupting normal breathing. Unlike typical drowning, this fluid originates internally due to blood shifting from the extremities to the core, which increases pressure in the lungs.
Key Signs to Watch For:
Rapid onset of extreme shortness of breath
Persistent coughing or respiratory distress
Pink, blood-tinged, or frothy sputum
Common Risk Factors:
Age 50+ or underlying high blood pressure
Taking NSAIDs (like ibuprofen) before diving
Physical exertion before or during the swim/dive
Cold water exposure or tight-fitting gear/wetsuits
Heavy breathing resistance or potential overhydration
The Golden Rule:
Because IPE can mimic other diving injuries, never brush it off. If you or your buddy experience sudden shortness of breath or a bad cough in the water, exit safely and seek medical evaluation immediately even if you feel better once you're back on dry land.
Knowledge is safety! Share this with your dive buddies and favorite water lovers to keep everyone educated out there.
The above is a summary from this article from DAN. Coincidentally, this was also covered on the third quarter PADI call a week or so ago.
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