Hypoxemia

This study tests whether using a portable oxygen concentrator (a lightweight, battery-powered device) during walking or exercise helps people with interstitial lung disease (ILD) or COPD feel less breathless and be more active in their daily lives. Twenty-four participants will t…

This study tests whether a special breathing monitor, called the Integrated Pulmonary Index (IPI), can help doctors decide the safest time to remove a breathing tube after surgery. About 632 adults having planned abdominal surgery will be randomly assigned to either standard care…

This study tests whether training ICU staff to keep oxygen levels between 90-96% helps patients on breathing machines recover faster. Researchers will track how many days patients are free from the ventilator and how often dangerously low oxygen goes unnoticed. The goal is to imp…

This study tests whether acetazolamide, a drug already used for altitude sickness, can reduce inflammation and immune system activation caused by high altitude. Nineteen healthy adults will take either the drug or a placebo before and during a stay at 3800 meters. Researchers wil…

This study checks whether a Nihon Kohden pulse oximeter accurately measures blood oxygen in 180 children aged 0-12 with various skin tones. All children are in a cardiac intensive care unit and already have an arterial line for standard care. The goal is to see if the device's re…