pH and Effects on Blood Gases

Effect of infrared low power laser irradiation on blood acid-base balance and respiratory gases tension.

[Article in Russian]

Miller KL, Dvoretskii DP.

I. P. Pavlov Institute of Physiology, Russian Acad. Sci., 199034, St. Petersburg, Nab. Makarova, 6, Russia.

Small volume (0.5 ml) of arterial or venous rat’s blood was subjected to impulse LPILR (lambda = 0.89 microns) in the light transparent cuvette. In arterial blood, a decrease of the pO2 (by 15.5 +/- 2.6%) and an increase of the pCO2 (by 22.0 +/- 4.8%) in respect to initial values, were determined. The acid-base shift from 7.39 +/- 0.02 to 7.34 +/- 0.02 was recorded. Only in few experiments, there were changes of pO2, pCO2 and pH in venous blood. Probable mechanism(s) of the mentioned parameters changes are discussed.