[Liquid ventilation--1].
The authors investigated in detail the sorption and desorption of oxygen and carbon dioxide in a solution of perfluorocarbons (solution RM 101, Miteni, Italy). From the results of the investigation ensues that maximal oxygen saturation of 77.3 vol.% can be achieved at 8 degrees C. With rising temperature the oxygen concentration in the solution declines (67.6 vol.% at 37 degrees). The saturation of the RM 101 solution corresponds to a linear equation of seventh order (fig. 2). Desorption of the RM 101 solution fully saturated with carbon dioxide, is on the other hand, most rapid at 37 degrees C (after the 13th minute the RM 101 solution contains less than 2% carbon dioxide as compared with 25 vol.% at 8 degrees C during the same period. In general the kinetics of desorption of carbon dioxide in solution correspond to a linear equation of fifth order (fig. 4). From the practical aspect it is not expedient to saturate the RM 101 solution with oxygen longer than 15-20 minutes. The mentioned kinetic parameters are important for the construction of a special liquid membrane or bubble oxygenator. In particular the latter is useful as with its use the authors achieved a 1.9 x higher oxygen concentration in the RM 101 solution than declared by the manufacturer.
Nekvasil
R
R
II. dĕtská klinika, FDN J.G. Mendela, Brno.
Dressler
M
M
Vecera
Z
Z
Penková
Z
Z
D002245:Carbon Dioxide; D055598:Chemical Phenomena; D002621:Chemistry; D005466:Fluorocarbons; D010100:Oxygen; D012121:Respiration, Artificial; D013696:Temperature
D005466:Fluorocarbons; D002245:Carbon Dioxide; D010100:Oxygen
Kapalinová ventilace--1. cást.