What is blood gases lab test?

A blood gas test measures the amount of oxygen and carbon dioxide in the blood. It may also be used to determine the pH of the blood, or how acidic it is. The test is commonly known as a blood gas analysis or arterial blood gas (ABG) test. Your red blood cells transport oxygen and carbon dioxide throughout your body.

What does a blood gas test for?

An arterial blood gases (ABG) test measures the acidity (pH) and the levels of oxygen and carbon dioxide in the blood from an artery. This test is used to find out how well your lungs are able to move oxygen into the blood and remove carbon dioxide from the blood.

Why would a doctor order a blood gas test?

A blood gas test is also called an arterial blood gas test or a blood gas analysis. It measures oxygen and carbon dioxide levels in the blood. The test can also show blood pH levels and lung function. Doctors often use blood gas tests in emergency situations to help diagnose the cause of breathing difficulty.

IT IS INTERESTING:  Does nicotine cause vein problems?

What is the normal blood gas level?

Normal Results

Values at sea level: Partial pressure of oxygen (PaO2): 75 to 100 millimeters of mercury (mm Hg), or 10.5 to 13.5 kilopascal (kPa) Partial pressure of carbon dioxide (PaCO2): 38 to 42 mm Hg (5.1 to 5.6 kPa) Arterial blood pH: 7.38 to 7.42.

What are the two most important blood gases?

Oxygen (O2) and carbon dioxide (CO2) are the most important respiratory gases, and their partial pressures in arterial blood reflect the overall adequacy of gas exchange.

Is blood gas test painful?

Most people feel a brief, sharp pain as the needle to collect the blood sample enters the artery. If you get a local anesthetic, you may feel nothing at all from the needle puncture. Or you may feel a brief sting or pinch as the needle goes through the skin.

How do you read blood gas results?

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. If a patient’s pH > 7.45, the patient is in alkalosis. If the pH < 7.35, then the patient is acidosis.

What causes respiratory acidosis?

Respiratory acidosis typically occurs due to failure of ventilation and accumulation of carbon dioxide. The primary disturbance is an elevated arterial partial pressure of carbon dioxide (pCO2) and a decreased ratio of arterial bicarbonate to arterial pCO2, which results in a decrease in the pH of the blood.

How often should ABG be repeated?

Intermittent arterial blood gas analyses must be performed more frequently, up to every 10 minutes, to detect changes of 20% in arterial partial pressure of oxygen.

IT IS INTERESTING:  Question: Is lymph node inflammation serious?

What does high pO2 mean?

pO2: This is measured by a pO2 electrode. It is the partial pressure (tension) of oxygen in a gas phase in equilibrium with blood. High or low values indicate blood hyperoxia or hypoxia, respectively. pO2 in venous blood is lower than arterial blood due to oxygen extraction by peripheral tissues.

What does bad blood gases mean?

Imbalances in the oxygen, carbon dioxide, and pH levels of your blood can indicate the presence of certain medical conditions. These may include: kidney failure. heart failure. uncontrolled diabetes.

Does drinking water increase oxygen in the body?

2. Drink water. In order to oxygenate and expel carbon dioxide, our lungs need to be hydrated and drinking enough water, therefore, influences oxygen levels.

How do you solve ABG problems?

Steps in ABG analysis using the tic-tac-toe method

  1. Memorize the normal values. …
  2. Create your tic-tac-toe grid. …
  3. Determine if pH is under NORMAL, ACIDOSIS, or ALKALOSIS. …
  4. Determine if PaCO2 is under NORMAL, ACIDOSIS, or ALKALOSIS. …
  5. Determine if HCO3 is under NORMAL, ACIDOSIS, or ALKALOSIS.

How is respiratory acidosis treated?

Treatment

  1. Bronchodilator medicines and corticosteroids to reverse some types of airway obstruction.
  2. Noninvasive positive-pressure ventilation (sometimes called CPAP or BiPAP) or a breathing machine, if needed.
  3. Oxygen if the blood oxygen level is low.
  4. Treatment to stop smoking.