Nitrogen narcosis and motor skills in divers after inner ear injury
Part of Brain & nervous system, Ear, nose & throat clinical trials.
This trial tests whether breathing nitrogen at depth (which can cause a foggy feeling called nitrogen narcosis) affects a diver's motor skills, especially balance and coordination. It compares healthy divers with those who have had inner ear decompression illness (a condition that can affect balance) to see if they respond differently.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are either a healthy person with no history of bone, joint, or brain conditions that affect balance or thinking, or a diver who has had inner ear decompression illness and has been cleared to dive again.
- If you are a diver, you must have had a negative PFO test (a check for a hole in the heart) or a procedure to close it.
- You must not have a known heart hole (PFO) that is still open.
- You must not have severe balance problems from a past dive injury that make it hard to stand with feet together and eyes closed for 30 seconds.
- You must not have a history of substance abuse, and you must avoid alcohol and heavy caffeine for 24 hours before the test (one cup of coffee at most).
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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