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Effects of Acute Hyperventilation on Serum Potassium in the Dog
Author(s) -
MUIR WILLIAM W.,
WAGNER ANN E.,
BUCHANAN CHERYL
Publication year - 1990
Publication title -
veterinary surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 79
eISSN - 1532-950X
pISSN - 0161-3499
DOI - 10.1111/j.1532-950x.1990.tb01146.x
Subject(s) - hyperventilation , medicine , hypokalemia , potassium , arterial ph , anesthesia , pco2 , respiratory system , chemistry , organic chemistry
The effects of increasing respiratory rates on arterial pH, PaCO 2 , HCO 3 , and potassium (K) were measured in normal anesthetized dogs. Hyperventilation resulted in increased pH, decreased PaCO 2 , decreased HCO 3 , and decreased K compared with those parameters in spontaneously breathing dogs. The changes were related quantitatively: each 10 mmHg decrease in PaCO 2 was associated with a pH increase of 0.1, a HCO 3 decrease of 2.0 mEq/L, and a K decrease of 0.4 mEq/L. There were no cardiac arrhythmias or clinical signs of hypokalemia. After termination of hyperventilation, serum K was slower to return to control values than PaCO 2 . The ratio of the duration of hyperventilation to the time required for return of serum K to control was 0.67.