Hypoxemia is usually defined in terms of reduced partial pressure of oxygen (mm Hg) in arterial blood. Hypoxemia can cause symptoms such as those in respiratory distress. These include breathlessness, an increased rate of breathing, use of the chest and abdominal muscles to breathe, and lip pursing.
hypoxia
Hypoxemia is the medical term meaning abnormally low blood oxygen levels.
Hypoxia is a deficiency of oxygen at the tissue level.
The normal partial pressure of oxygen in arterial blood is 75-100 millimeters of mercury. In comparison the partial pressure of oxygen at sea level is 750 millimeters of mercury.
When determining the blood oxygen level, doctors look for levels in the normal range. A normal arterial blood oxygen level is generally between 75 and 100 mmHg.
In terms of oxygen saturations, arterial blood should be around 97-100% and venous return should be at approximately 75%. These figures are only appropriate for altitudes close to sea level.
There is no such thing as arterial blood gas. When they draw blood it is drawn into a vial that has a vacuum, so it may appear that they are drawing gas, but no such gas exists. Also, when they draw blood they draw it from a vein.
It means 66% of the hemoglobin molecules are oxygenated. This is a very low reading for arterial blood -- not compatible with life (for a human) for more than a few minutes -- though it might be seen in venous blood. Normal arterial oxygen saturation percentage is in the 90s.
ABG (Arterial Blood Gases) is a measurement of oxygen saturation in the arterial blood which supplies oxygenated blood to the body tissue and the extraction of oxygen from the hemoglobin at the capillary level. The amount of oxygen saturation of the hemoglobin (HbO2) depends on hemoglobin concentration and the arterial pressure often referred to as Hemoglobin / O2 dissociation curve. At lower body temperature, less oxygen is bounded to hemoglobin, while at higher temperature slightly more oxygen is bounded to hemoglobin. It is therefore important to know the body temperature when the ABG analysis is done so as to have a more meaningful interpretation of the result.
low level of HB in blood is called manifest iron deficiency.
That means the blood (hemoglobin) is 44% saturated with Oxygen. 44% is incompatible with life for a normal human. Normal person should be above 96% under normal condition.
In hospital premises It may be ABG Analysis (arterial blood gas). Blood wil take from the superficial artery and does the test. Another way is by SPo2 sensor machines, that is saturation point of oxygen sensor machines.