Breath test may prevent fluid overload in ICU patients

This study looks at whether measuring changes in exhaled carbon dioxide (a breath test) during a leg-raising maneuver can help predict if a critically ill patient needs more fluids. Doctors often struggle to balance giving enough fluids without causing harm from too much. The study will observe 68 adults on breathing machines in the ICU, comparing the breath test to standard methods to see if it is a reliable, non-invasive tool.