Arterial Blood Gas (ABG)

Arterial blood gases are measured using blood drawn from an artery, usually from the wrist. Blood is usually drawn from a vein, but venous blood is inaccurate for this measurement.

Arterial blood gases are measured to determine the amount of oxygen dissolved in the blood (p02), the percentage of hemoglobin saturated with oxygen (o2 sat), and the amount of acid in the blood (pH). The oxygen measure may be used to determine whether a patient needs oxygen therapy. The carbon dioxide level gives some idea of lung function and is especially important to know when starting oxygen therapy.



Pulmonology is classified as a subspecialty of Internal Medicine. A pulmonologist is a physician who is trained and acquired specialized knowledge and skill in the diagnosing and treating of lung disorders.
Sleep Medicine is a rapidly growing specialty which treats disorders related to sleep. Including sleep apnea, hypersomnia, insomnia, parasomnia, nocturnal epilepsy and circadian rhythm disorders.
People with life threatening injuries and illnesses need critical care. Critical care involves close, constant attention by a team of specially-trained health professionals. It usually takes place in an intensive care unit.
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