Buffer base
From Wikipedia, the free encyclopedia
Buffer base (BB) is the sum of all buffering agents in the blood.[1] It is used in blood test to estimate acid-base physiology in individuals.
Normal blood values are around 48 mmol/l [2].
[edit] Normal buffer base
Normal buffer base (NBB) is what the buffer base would have been at normal pH (7.4), normal PCO2[3] (40 mmHg) and normal temperature (37 degrees Celsius) [4].
The content of hemoglobin in blood increases this value. The correlation is:
NBB = 41.7+0.68×Hb
, where Hb is in mmol/l.[4] A normal value of this is ~9.3 mmol/l, making the normal blood value of NBB 48 mmol/l.
[edit] References
- ^ medical-dictionary.thefreedictionary.com
- ^ iv-partner.com - Acid-Base Balance
- ^ anst.uu.se Some notes on human acid-base physiology
- ^ a b freepatentsonline.com Method and apparatus for pH recording. United States Patent 4384586