canula is o. k. and adjusts it. Next silicon is sprayed on the canula, the collar is loosened and then everything has to go fast. Out with the old, in with the new, meanwhile I am becoming exhausted. Finally a new sterile compress is put on and then everybody calms down. The presence of a medic at any change is not absolutely necessary. After all every member of the nursing staff must be able to change
the canula on his own in a case of emergency.