[The effect of CO2 absorbent shape on its functioning time]

A comparative investigation into the functioning time of three brands of CO2 absorbents was performed. The three investigated brands were: Viosorb, Wakolime, and Wakolime-A. In this study PICO2 was measured to know the drug's functioning time and CO2 elimination from the model lung fixed at 200 or 300 ml.min-1. PICO2 was less than 1 mmHg for 34 to 55 hours at VCO2 of 200 ml. min-1 and for 32 to 48 hours at VCO2 of 300 ml.min-1. PICO2 increased exponentially in all CO2 absorbents. There were statistically significant relation between PICO2 and time. The CO2 absorbent whose shape is tablet has the longest functioning time because it could be placed smoothly in the canister. It is concluded that the shape of CO2 absorbent plays a role in determining its functioning time.