Measuring oral blood vessel function in healthy and ICU patients
This study looks at how tiny blood vessels under the tongue work in healthy people and in critically ill ICU patients. For healthy volunteers, it checks normal function; for ICU patients, it measures changes while they are on strong blood-pressure support and a breathing tube.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are either a healthy adult aged 18–40, OR you are currently in the ICU receiving IV blood-pressure medication and on a breathing tube.
- You must not have a chronic disease (like diabetes or heart disease) or take any daily prescription medicines (if healthy volunteer).
- You cannot be pregnant.
- You must not have used caffeine, nicotine, or alcohol in the 12 hours before the study (if healthy).
- For ICU patients: No head or face injuries, no high-dose IV fluids, and your blood pressure medication dose must be stable for at least 30 minutes.
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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