Changes

==Introduction==

==Introduction==

Blood gas analysis is the gold standard for evaluating gas exchange in a patient. Analysers measure the pH, partial pressures of oxygen and carbon dioxide of the sample directly as well as calculating other parameters such as haemoglobin saturation and plasma bicarbonate. It provides details on oxygenation, ventilation and acid-base status of the patient. Samples used are usually heparinised and can be arterial or venous, but this should be considered when interpreting results.

Blood gas analysis is the gold standard for evaluating gas exchange in a patient. Analysers measure the pH, partial pressures of oxygen and carbon dioxide of the sample directly as well as calculating other parameters such as haemoglobin saturation and plasma bicarbonate. It provides details on oxygenation, ventilation and acid-base status of the patient. Samples used are usually heparinised and can be arterial or venous, but this should be considered when interpreting results.