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Arterial Blood Gas (ABG)

Author: Noah H. Carpenter, MD

CE: 2.5 hours
Rated 4.6 out of 5.0 based on 9901 reviews

Course Summary

The arterial blood gas test (ABG) is one of the most common and useful tests performed by medical professionals. The ABG checks a patient’s arterial blood to determine acidity and levels of oxygen and carbon dioxide in their blood. It is especially useful to determine whether oxygen therapy is working for a patient or to reveal important information about a patient’s metabolic state. The goal of ABG sampling is to assess the patient’s physiologic condition. Anatomical sites, techniques, and complications of the arterial blood gas test and ABG interpretation is discussed. Interpretation of venous blood gases and detailed discussion of acid-base disturbances are discussed separately.

Course Format


Course Syllabus

I.         Introduction
II.         Purpose of the ABG Test
III.         Normal Metabolic and Cellular Function
1.   Acid-Base
2.   Buffers
3.   Respiratory System
4.   Renal System
IV.         Oxygen Level and Saturation
V.         Common Sites of ABG Sample Collection
1.   Radial Artery
2.   Femoral Artery
3.   Brachial Artery
VI.         Blood Gas Analyzer
1.   ABG Measurement Interpretation
VII.         Acid-Base Disorders
1.   Respiratory Acidosis
2.   Respiratory Alkalosis
3.   Metabolic Acidosis
4.   Metabolic Alkalosis
VIII.         Case Studies: Acid-Base Imbalance
1.   Case Study 1: Pediatric Non-diabetic Ketoacidosis
2.   Case Study 2: Caffeine Overdose and Electrolyte Disturbance
IX.         Summary


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