Its value ranges from 95 100. Bicarbonate acts as a buffer in the blood and helps maintain optimal ph.
If there are additional acids in the blood the level of bicarbonate will fall as ions are used to buffer these acids.
Abg normal range uk. 7 49 7 35 7 45. If the ph 7 35 then the patient is acidosis remember the lower the ph number the higher the acid level in the body. Oxygen saturation denoted by so2 it is the amount of oxygen that is bound to hemoglobin in red blood cells.
Normal range 10 5 to 13 5 kpa if the po 2 level is low it indicates an abnormally low concentration of blood oxygen hypoxaemia. What are the most common arterial blood gas abnormalities. The normal range for bicarbonate is 22 26mmol l.
A ph of less than 7 0 is called acid and a ph higher than 7 0 is called basic alkaline. Metabolic problems will require respiratory compensation and this occurs rapidly eg by increasing ventilation to blow off co 2 on the other hand respiratory problems leading to acid base abnormalities. An abg is performed and reveals the following.
This can be achieved by buffer mechanisms which can be either renal or respiratory in nature. There are very large quantities of hco 3 in the body compared to h this means that a large change in the concentration of h can occur with only a very small change in the concentration of hco 3. An abg is performed on the patient who is not currently receiving any oxygen therapy.
14 11 13 kpa 105 mmhg 82 5 97 5 mmhg ph. Blood oxygen levels po 2 level. They have no significant past medical history and are not on any regular medication.
So blood is a little standard. How to interpret an abg the first value a nurse should look at is the ph to determine if the patient is in the normal range above or below. The ph measures hydrogen ions h in blood.
The most common abg abnormalities detected relate to an excess of acid. If a patient s ph 7 45 the patient is in alkalosis. If there is a chronic acidosis additional bicarbonate is produced by the kidneys to keep the ph in range.
The ph of blood is usually between 7 35 and 7 45. The normal value of bicarbonate in the blood is 22 28 mmol l. Blood ph has to be maintained within a tight normal range to avoid cellular death.
The normal range for p a co 2 is.