The art of anaesthesia . f maintenance is not stage of recovery is further divided into twoperiods: (a) The return of the reflexes. (b) The return of consciousness. The stage of induction extends from the beginning ofthe administration of the anaesthetic to the point wheregeneral muscular relaxation has been brought about. Thisstage, leading the patient as it does from consciousness todeep anaesthesia, is the most difficult and important of the 11 12 AN/ESTHESIA three stages. The undervaluation of this importance isresponsible for the failures which one sees in otherwise un-comp
The art of anaesthesia . f maintenance is not stage of recovery is further divided into twoperiods: (a) The return of the reflexes. (b) The return of consciousness. The stage of induction extends from the beginning ofthe administration of the anaesthetic to the point wheregeneral muscular relaxation has been brought about. Thisstage, leading the patient as it does from consciousness todeep anaesthesia, is the most difficult and important of the 11 12 AN/ESTHESIA three stages. The undervaluation of this importance isresponsible for the failures which one sees in otherwise un-complicated anaesthesias. To completely induce anaesthesiatakes from six to eight minutes. The correct control ofthis stage seriously affects the stage of maintenance, whichis to follow. The stage of maintenance extends from the completionof relaxation to the point where the anaesthetic level, whichhas been carried, is permitted to drop, with a view of allow-ing the patient to recover. SELAXATION RETURN OFREFLEXES Excitement. RETURN OFCONSCIOUSNESS _IO _J^ 20 _ _30 MIN. MIN. MIN Fig. 9.—Curve of a complete anaesthesia. The stage of maintenance should begin just before thetime of the first incision and should cease shortly beforethe conclusion of the operative procedure. In maintaininganaesthesia, our problem is to supply to the patient theether which he loses through his respiration, exposed capil-lary surfaces, through the destruction of the ether radical,etc., after anaesthesia has been properly brought strictly speaking there are no periods of mainte-nance, yet there are levels of lightness and depth wherecertain reflexes may be retained or abolished. The stage of recovery is the inverse of the stage ofinduction. GENERAL ANAESTHESIA 13 The stage of recovery begins when the constant level,which has been carried during- the stage of maintenance, ispermitted to permanently drop with a view of stopping theadministration altogether. The stage of recovery endswith the re
Size: 2619px × 954px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1919
