Blood Gas Analysis

Blood gas analysis. Definition blood gas analysis also called arterial blood gas abg analysis is a test which measures the amounts of oxygen and carbon dioxide in the blood as well as the acidity ph of the blood. It is also useful to have access to any previous gases. Indian j crit care med. Bijapur mb kudligi na asma s.

Results show blood oxygen and carbon dioxide levels ph levels and lung function. Purpose an abg analysis evaluates how effectively the lungs are delivering oxygen to the blood and how efficiently they are. An alternative to arterial blood gas analysis for ph pco2 bicarbonate sodium potassium and chloride in the intensive care unit patients. Blood gas analysis is a key investigation in a patient with a suspected imd particularly during acute episodes of illness.

This test measures the partial levels of these substances using a small blood sample. Blood is most commonly drawn from the radial artery because it is easily accessible can be compressed to control bleeding and has less risk for vascular occlusion the selection of which radial artery to draw from is based on the outcome of an allen. Blood gas analysis provides information on a critically ill patient s respiratory and metabolic status via measurement of ph carbon dioxide pco 2 and oxygen po 2 together with other vital information such as electrolytes lactate and hemoglobin through three educational videos you ll experience why blood gas analysis is important in three critical patient cases covering copd. Your red blood cells transport oxygen and carbon dioxide throughout your body.

This is particularly important if your patient is known to have chronic respiratory disease with existing chronic abg changes. Castro d keenaghan m. The most common acid base imbalance seen in the paediatric population is a metabolic acidosis secondary to infections catabolic states or severe dehydration. Doctors often use the test in.

Central venous blood gas analysis. Your doctor may run a blood gas analysis or arterial blood gas abg test if you are showing the signs of an oxygen carbon dioxide or ph imbalance such as confusion or difficulty breathing. Arterial blood for blood gas analysis is usually drawn by a respiratory therapist and sometimes a phlebotomist a nurse a paramedic or a doctor.