How do I study for ABG?

How do I study for ABG?

When required to make a proper approach towards the evaluation of blood gas and acid–base disturbances in the body, the following scheme is suggested:

  1. Look at pH – < 7.40 – Acidosis; > 7.40 – Alkalosis.
  2. If pH indicates acidosis, then look at paCO2and HCO3-
  3. If paCO2is ↑, then it is primary respiratory acidosis.

What is the easiest way to read an ABG?

The third step in our ABG interpretation is to look at the HCO3 level. A normal HCO3 level is 22-26 mEq/L. If the HCO3 is below 22, the patient is acidotic. If the HCO3 is above 26, the patient is alkalotic….6 Easy Steps to ABG Interpretation.

pH 7.35-7.45
Base Excess + or – 2

How do you read an ABG on oxygen?

When interpreting an ABG, it is important to use the same stepwise approach.

  1. Determine oxygenation (PaO2)
  2. Determine pH (acidosis or alkalosis)
  3. Determine respiratory component (PaCO2)
  4. Determine metabolic component (Bicarbonate)
  5. Determine compensation.
  6. Final interpretation.
  7. Review other parameters.

Where do you draw ABG?

A health professional uses a needle to take a blood sample. It’s usually taken from the inside of the wrist. But it can also be taken from an artery in the groin or on the inside of the arm above the elbow crease.

What is PO2 in blood gas?

PO2 (partial pressure of oxygen) reflects the amount of oxygen gas dissolved in the blood. It primarily measures the effectiveness of the lungs in pulling oxygen into the blood stream from the atmosphere. Elevated pO2 levels are associated with: Increased oxygen levels in the inhaled air.

What is Bicarb in ABG?

This test measures the amount of bicarbonate, a form of carbon dioxide, in your blood. Bicarbonate, also known as HCO3, is a byproduct of your body’s metabolism. Your blood brings bicarbonate to your lungs, and then it is exhaled as carbon dioxide. Your kidneys also help regulate bicarbonate.

Why do we put ABG on ice?

Blood gas samples have been stored on ice for many years to minimize leukocytic metabolism. The cooling effect increases the solubility of oxygen in the plasma and increases the oxygen-hemoglobin affinity.