Changes in partial pressures of each tissue gas and tissue perfusion were evaluated in the 2.5% artificial salt baths by means of medical mass spectrometry using 9 rabbits. The level of subcutaueous PO(2) lowered by 18% and PCO(2) elevated by 7 % compared with the plain water bath. The tissue perfusion volume was found increased by few %. It is assumed that we owe the warm feeling after taking concentrated salt baths to the improved tissue perfusion.
