The art of anaesthesia . ood oxygenation and employment ofrebreathing; the surgeon who permits early recovery. The following factors tend to produce recovery by lysis:ether anaesthesia; a long stage of maintenance; preliminarymorphine medication; acidosis; shallow or obstructed res-pirations ; the use of the closed method with persistent highmaintenance and cyanosis. C. The Control of the Stage of Recovery.—The control of the stage of recovery divides itself naturally into: (a) that portion dating from the onset of the stage to the COMPLETE GENERAL ANESTHESIA 77 time when the reflexes have com
The art of anaesthesia . ood oxygenation and employment ofrebreathing; the surgeon who permits early recovery. The following factors tend to produce recovery by lysis:ether anaesthesia; a long stage of maintenance; preliminarymorphine medication; acidosis; shallow or obstructed res-pirations ; the use of the closed method with persistent highmaintenance and cyanosis. C. The Control of the Stage of Recovery.—The control of the stage of recovery divides itself naturally into: (a) that portion dating from the onset of the stage to the COMPLETE GENERAL ANESTHESIA 77 time when the reflexes have completely returned; (b) thatportion dating from the complete return of the reflexes tothe return of consciousness. We recognize these two periods of recovery because thisdivision naturally comes about in the treatment of the pa-tient. Before the reflexes have returned the patient is un-der the immediate supervision of the anaesthetist. Afterthe complete return of the reflexes he usually passes intothe hands of the -Recovery by lysis. (a) The first period of the stage of recovery shouldtake place in the operating room on the operating vomiting, which accompanies the return of the re-flexes, should be over by the time the patient leaves theoperating room. Some patients do not vomit upon the return of the re-flexes, but the large proportion who do not at least retchonce or twice. It will be understood that at this time, con-sciousness having not yet returned, such retching and vom-iting are not distressing to the patient. Our chief problem in controlling the stage of recoveryis to determine when to begin. The exact time at which 78 ANAESTHESIA the anaesthetic may be stopped is governed largely by ex-perience. This is one of the features which go to make upthe Art of Anaesthesia. Broadly speaking, in the case ofabdominal operations, a moderate level of maintenancehaving been carried, the anaesthetic may be permanentlyreduced as soon as the fascia is closed. When t
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