Testing gentle breathing support for severe lung failure on life support

The CALMDOWN trial is testing a new approach to breathing support for patients with the most severe form of acute respiratory distress syndrome (ARDS) — a life-threatening condition where the lungs cannot deliver enough oxygen to the body. Patients in this trial are already on extracorporeal membrane oxygenation (ECMO), a machine that does the work of the heart and lungs while they heal. The study compares two strategies: one group will receive a gentler, 'near-sleep' style of breathing support for the first three days, while the other group receives the standard protective breathing support currently used.

Severe ARDS is extremely dangerous, and even with life support machines, many patients do not survive or recover their lung function. Doctors believe that gentler breathing support early on might reduce the damage that breathing tubes and ventilators can cause to already-injured lungs, potentially helping patients recover faster and live longer.