HYPOXIA

This study looked at 102 children who had surgery for a heart problem present at birth. After surgery, they were placed on their stomachs with their heads raised at different angles (10°, 30°, or 45°) to see which position best helps their heart and lungs recover. The goal was to…

This study looked at 165 trauma patients to see how often they had low blood oxygen (hypoxemia) during their first 24 hours in the hospital. Researchers used a special finger clip to track oxygen levels continuously. They wanted to find out if low oxygen episodes happen more ofte…

This study looked at whether wearing FFP2/N95 masks changes oxygen levels or heart rate in dental professionals. 60 dental workers wore the masks while their oxygen and pulse were measured. The goal was simply to gather information, not to treat or prevent any disease.

This study looked at how well smartphone apps and a special ring can measure sleep quality in adults getting orthodontic treatment. 52 people from a dental school took part. The goal was to see if these tools could help detect sleep problems like snoring or sleep apnea, not to tr…

This study looked at 152 ICU patients who needed extra oxygen. Researchers compared oxygen levels from a simple finger clip (pulse oximeter) with a more detailed blood test. The goal was to see how well the two methods agree, helping doctors know if the finger clip is reliable en…

This study looked at how being at high altitude (real mountains) compares to a lab that mimics high altitude. Twenty healthy adults took part. Researchers measured brain oxygen, blood oxygen, heart rate, sleep quality, and altitude sickness. The goal was to understand differences…

This study looked at 120 women having planned C-sections under general anesthesia. It compared two ways of removing the breathing tube: one using positive pressure and one using suction. The goal was to see which method helps prevent low oxygen levels in the first hour after surg…

This study looked at how low oxygen levels (hypoxia) change blood flow in the arms of healthy men and women. Researchers measured blood flow using a simple, non-invasive technique. The goal was to understand if men and women have different blood vessel responses to low oxygen, wh…

This study checked how accurately pulse oximeters (devices that measure blood oxygen through the skin) work when people are moving and have very low oxygen levels. Five healthy adults took part. Researchers compared the device readings to actual blood samples and heart monitors t…

This study checked how accurately pulse oximeters (devices that clip onto a finger to measure blood oxygen) work in healthy adults whose oxygen levels were temporarily lowered. Eleven volunteers had their pulse oximeter readings compared to actual blood samples. The goal was to s…

This study looked at whether using a continuous integrated pulmonary index (IPI) monitor could reduce the chance of low oxygen levels in older adults (65+) during a painless colonoscopy. The monitor tracks breathing and heart data to alert staff when oxygen drops. 153 participant…

This study tested a prototype system that uses a tilt table and lower body suction to create conditions similar to those fighter pilots face during high-G maneuvers. The goal was to learn how the body reacts and find better ways to select and train pilots. 46 pilots and cadets to…

This study checked how well a new pulse oximeter measures oxygen levels and heart rate in 30 healthy adults. Participants had their oxygen levels lowered on purpose while the device was tested during both movement and rest. The goal was to see if the device meets accuracy standar…

This study checked how accurately pulse oximeters (devices that clip onto a finger to measure blood oxygen) work in healthy adults whose oxygen levels were temporarily lowered in a controlled setting. Researchers compared the device readings to actual blood samples and heart moni…

This study looked at how sleep apnea and low oxygen levels impact muscle strength and lung function in 30 adults with chronic spinal cord injury. Researchers measured hand grip strength and muscle activity to compare those with and without sleep apnea. The goal was to better unde…

This study checked if new pulse oximeter devices accurately measure oxygen levels and heart rate in healthy adults aged 18 to 39. Researchers temporarily lowered participants' oxygen to test the devices. The goal was to ensure the devices work well across different skin tones and…

This study checked how well a new pulse oximeter measures oxygen levels and heart rate. It involved 28 healthy adults aged 18 to 50. Researchers purposely lowered their oxygen levels in a safe, controlled setting to see if the device was accurate across a wide range of readings.

This study looked at 56 varicose vein patients having spinal anesthesia to see how the level of numbness affects their need for extra oxygen. Researchers used a new tool called the Oxygen Reserve Index (ORi) that can warn of low oxygen earlier than standard monitors. The goal was…

This study looked at how muscle stem cells respond to a specific type of exercise (eccentric resistance exercise) when oxygen levels are low. Thirty-eight healthy, active men aged 20-49 did the exercise in normal air, in a low-oxygen room, or with a cuff restricting blood flow. R…

This study checked how accurately pulse oximeters (devices that clip onto a finger to measure blood oxygen) work in healthy people whose oxygen levels were deliberately lowered. Eleven volunteers had their oxygen saturation and pulse rate measured by the device and compared to bl…

This study looked at 48 adults with obstructive sleep apnea to see if those with low oxygen levels have more insulin resistance in the liver and fat tissue. Researchers measured fat production and liver fat using special scans and tests. The goal was to understand why sleep apnea…

This study compared blood oxygen measurements from three different smartwatch brands against a standard medical pulse oximeter. 18 healthy adults participated, and researchers looked at how closely the smartwatch readings matched the medical device. The goal was to see if smartwa…

This study tested 24 healthy adults to see if the finger chosen for a pulse oximeter sensor changes oxygen level readings during brief low-oxygen and high-carbon-dioxide conditions. The goal was to find out if finger choice affects accuracy, which could help improve diagnosis. Re…

This study looked at how breathing air with more or less oxygen than normal during short, intense exercise (Tabata intervals) changes fitness. Twenty-three healthy men did 3 weeks of cycling workouts while breathing either high-oxygen or low-oxygen air. The goal was to see how ox…

This study checked how accurately pulse oximeters (devices that clip onto a finger to measure blood oxygen) work in healthy people whose oxygen levels were temporarily lowered. Researchers compared the device readings to actual blood samples. The goal was to see how reliable thes…

This study looked at how breathing low oxygen (hypoxia) and high carbon dioxide (hypercapnia) changes heart function in healthy people. Fifteen volunteers took part in short breathing experiments. The goal was to understand these effects, not to treat any disease.

This study looked at how the brain reacts when people exercise in low-oxygen environments, like high altitudes. Thirty healthy men performed exercise while researchers measured brain activity and oxygen levels using special scans and brain stimulation. The goal was to understand …