Acid base Nomogram
This image is an Acid-Base Nomogram. It is a visual map used by clinicians to
diagnose acid-base disorders by looking at the relationship between three variables:
Arterial Blood pH, Arterial Plasma HCO3, and PCO2.
Here is how to read and interpret the "petals" of this diagram:
1. The "Normal" Center
The central white circle represents a healthy person.
● pH: Approximately 7.4
● [HCO3]: Approximately 24 mEq/L
● PCO2: Approximately 40 mmHg
This image is an Acid-Base Nomogram. It is a visual map used by clinicians to
diagnose acid-base disorders by looking at the relationship between three variables:
Arterial Blood pH, Arterial Plasma HCO3, and PCO2.
Here is how to read and interpret the "petals" of this diagram:
1. The "Normal" Center
The central white circle represents a healthy person.
● pH: Approximately 7.4
● [HCO3]: Approximately 24 mEq/L
● PCO2: Approximately 40 mmHg
