
Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Base excess
Introduction
In human physiology, the base excess (see:
base) refers to the amount of acid required to return the blood pH of an individual to the normal value (pH 7,4). The value is usually reported in units of (mEq/L).
The term and concept were first introduced by Astrup and Siggaard-Andersen in 1958.
