[Comparative studies in the use of adult circle systems for the operative ventilation of children of all ages (author's transl)].
A modified adult circle system with Latexspiral tubing of 110 cm total length and internal diameter 10.5 mm, and a "Y" piece with a small dead space was investigated in vitro, in animal experiments and then in the clinic with respect to its usefulness in paediatric anaesthetics. The Kuhn- and Paedi-systems were taken as comparisons. The in-vitro experiments using a lung model that we have developed showed that rebreathing could be excluded with this circle-system. Clinical experiments on young piglets of weight between 4.5 and 5.0 kg with arterial blood gas estimations during spontaneous respiration, assisted and controlled ventilation, were carried out in order to compare these three systems. Every animal was subjected to all three types of system, and hence served as its own control. No impairment of ventilation was found during use of the circle-system. Clinical studies on intubated babies of bodyweight between 4.3 and 8.9 kg who were breathing spontaneously during light general anaesthesia showed no alterations in either the continuously measured transcutaneous pO2 or in the capillary blood gas values taken at the end of each period of observation. Findings which were independent of the sequence in which the systems were applied. As above, each child served as its own control. These studies show that simply by changing the tubing and "Y"-piece of an adult circle system, it becomes suitable for children of all ages.
D000776:Anesthesiology / Q000295:instrumentation*; D000818:Animals; D001784:Blood Gas Analysis; D001835:Body Weight; D002648:Child; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007442:Intubation, Intratracheal / Q000295:instrumentation; D010100:Oxygen / Q000097:blood; D012121:Respiration, Artificial / Q000295:instrumentation*; D013552:Swine
D010100:Oxygen
Vergleichende Untersuchungen zum Einsatz verschiedener Narkosesysteme in der Kinder-Anaesthesie.