Anaesthesia | General ICU Care | ABG interpretation: respiratory
ABG interpretation: respiratory
Session overview
Description
This session gives a brief overview of normal physiological mechanisms regulating body pH, followed by case studies with a particular focus on abnormalities pertaining to the respiratory system.
Learning objectives
By the end of this session you will be able to:
- describe the physiology of normal acid-base balance
- describe normal arterial blood gas parameters
- interpret arterial blood gases
- identify respiratory causes of arterial blood gas abnormalities
- explain the importance of arterial blood gas abnormalities for management
Homeostasis is the maintenance of a stable internal environment, despite changes in the external environment. Regulation of acid-base balance in the body is crucial for human physiology, including protein structure, enzyme function, and ion distribution. There are three main physiological mechanisms which maintain acid-base homeostasis:
- buffers
- the respiratory system
- the renal system
These mechanisms are covered in more detail in the later sessions:
- Acid base balance and buffers (001-0614)
- Renal regulation of body fluid pH (001-0658)
However, this session will briefly review them before looking at the respiratory system in more detail.
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