What does it mean if your ABG is high?

What does it mean if your ABG is high?

If your arterial blood gas test results are abnormal, it may mean you: Aren’t taking in enough oxygen. Aren’t getting rid of enough carbon dioxide. Have an imbalance in your blood pH (it’s too acidic or basic).

What factors can affect ABG results?

Your blood oxygen goes down as your elevation goes up. Smoking, inhaling secondhand smoke, having a fever, or breathing quickly can also affect the test results.

What causes errors in ABG test?

Five common types of arterial blood sampling error are discussed: air in the blood sample, inadvertent venous sampling or admixture, anticoagulant effects, changes due to metabolism, and alterations in temperature (Box 3-1).

What do ABG results tell you?

An arterial blood gas (ABG) test measures oxygen and carbon dioxide levels in your blood. It also measures your body’s acid-base (pH) level, which is usually in balance when you’re healthy. You may get this test if you’re in the hospital or if you have a serious injury or illness.

What are the signs of acidosis or alkalosis?


  • Confusion (can progress to stupor or coma)
  • Hand tremor.
  • Lightheadedness.
  • Muscle twitching.
  • Nausea, vomiting.
  • Numbness or tingling in the face, hands, or feet.
  • Prolonged muscle spasms (tetany)

Is ABG test accurate?

However in conditions with low oxygen saturation (SpO2 <90%) and in critical status, PO is a poor predictor of hypoxemia or not a good alternative to estimate arterial oxygen saturation. There are several limitations of the study as the sample size is small and the accuracy rate is only 83.2%.

How do you analyze ABG?

A 6-step program for ABG analysis

  1. Analyze the pH.
  2. Analyze the PaCO 2.
  3. Analyze the HCO 3.
  4. Match either the PaCO 2 or the HCO 3 with the pH.
  5. Does either the PaCO 2 or the HCO 3 go in the opposite direction of the pH?
  6. Analyze the PaO 2 and SaO 2.

When should you suspect hypercapnia?

Hypercapnia should always be suspected in those who are at risk for hypoventilation (eg, sedative use, history of sleep apnea) or have increased physiologic dead space and limited pulmonary reserve (eg, chronic obstructive pulmonary disease [COPD] exacerbation) who present with shortness of breath, a change in mental …

How is hypercapnia treated?

If you get hypercapnia but it isn’t too severe, your doctor may treat it by asking you to wear a mask that blows air into your lungs. You might need to go the hospital to get this treatment, but your doctor may let you do it at home with the same type of device that’s used for sleep apnea, a CPAP or BiPAP machine.

What causes high arterial PCO2?

The most common cause of increased PCO2 is an absolute decrease in ventilation. Increased CO2 production without increased ventilation, such as a patient with sepsis, can also cause respiratory acidosis. Patients who have increased physiological dead space (eg, emphysema) will have decreased effective ventilation.

Why is PCO2 high in COPD?

As COPD advances, these patients cannot maintain a normal respiratory exchange. COPD patients have a reduced ability to exhale carbon dioxide adequately, which leads to hypercapnia.

What is normal ABG values?

An acceptable normal range of ABG values of ABG components are the following,[6][7] noting that the range of normal values may vary among laboratories and in different age groups from neonates to geriatrics: pH (7.35-7.45) PaO2 (75-100 mmHg) PaCO2 (35-45 mmHg)

What is an ABG test?

An ABG is a blood test that measures the acidity, or pH, and the levels of oxygen (O2) and carbon dioxide (CO2) from an artery.² The test is used to check the function of the patient’s lungs and how well they are able to move oxygen into the blood and remove carbon dioxide.

What are some hazards of an ABG?

An ABG is done by sticking an artery with a syringe in order to collect a sample of arterial blood. 127. What are some hazards of an ABG? Infection, bleeding, and obstruction of the vessel. 128. What are the sites for a capillary blood gas?

Why do my ABG results show different results?

This can be caused by posting the ABG results on the incorrect patient record, or mislabeling the blood sample. In some cases, inexperienced healthcare providers might stick the vein instead of the artery. In this case, the sample will be filled with venous blood instead of arterial blood, which will show vastly different results.

Why is ABG interpretation important in Respiratory Therapy?

Interpreting an arterial blood gas (ABG) is a crucially important skill for respiratory therapists. ABG interpretation is especially important in critically ill patients because it helps the healthcare team determine the best course of action in regards to treating the patient.