Biomedical technology

Antibiotic levels can be measured in breath for first time

A team of engineers and biotechnologists at the University of Freiburg has for the first time shown in mammals that the concentration of antibiotics in the body can be determined using breath samples. The breath measurements ...

Pediatrics

Breathing support improves lung function in near-term newborns

A new pre-clinical study in rabbits finds breathing support with an end-expiratory pressure improves lung function in near-term newborns with elevated lung liquid volumes at birth. The study is published ahead of print in ...

Neuroscience

Breath test to determine correct treatment for epilepsy

Epilepsy affects some 50 million people worldwide and pharmaceutical treatment of the disease is a tightrope walk, as the dose must be tailored precisely to the individual patient: "Slightly too little and it isn't effective. ...

Pediatrics

Kids' sleep: Check in before you switch off

The struggle to get your child to go to sleep and stay asleep is something most parents can relate to. Once the bedtime battle is over and the kids have finally nodded off, many parents tune out as well.

Diseases, Conditions, Syndromes

Long COVID symptoms in a third of people with COVID-19

A survey of patients previously diagnosed with COVID-19 found that lingering symptoms seven months after infection were common among otherwise healthy young persons in the outpatient setting. The findings are published in ...

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Breathing

Breathing is the process that moves air in and out of the lungs. Aerobic organisms require oxygen to release energy via respiration, in the form of the metabolism of energy-rich molecules such as glucose. Breathing is only one process that delivers oxygen to where it is needed in the body and removes carbon dioxide. Another important process involves the movement of blood by the circulatory system. Gas exchange occurs in the pulmonary alveoli by passive diffusion of gases between the alveolar gas and the blood in lung capillaries. Once these dissolved gases are in the blood, the heart powers their flow around the body (via the circulatory system). The medical term for normal relaxed breathing is eupnea.

In addition to removing carbon dioxide, breathing results in loss of water from the body. Exhaled air has a relative humidity of 100% because of water diffusing across the moist surface of breathing passages and alveoli.

This text uses material from Wikipedia, licensed under CC BY-SA