الفهرس 
Aim of The WorkOnly 14 pages are availabe for public view
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Abstract
This study has been planned to evaluate the validity of PETCo2 measurment, by capnography, in assi ssi ng the degree of neuromuscul ar
recovery. Twenty patients were included in this study. All patients were subjected to ge neral anaesthesia, induced wi th thi opentone and maintained with gas-oxygen, halothane and relaxant (Pancuronium).
Patients were classified into 2 groups according to the mode of analgesia; 12 patients received i.v. morphine and 8 received regional
block. Patients were mechanically ventilated with maintenance of eucarbia, except for periods of 5 minute duration where spontaneous
breathing was allowed through T-peice at different grades of block.
Du ri ng the peri ods PErC02 ’ TV, and RR were recorded PETCo2 and RR were monitored by Datex capnograph while expired TV was measured with
Ohmeda flowmeter. Da tex re 1 axograph wa s the peri phera 1 nerve stimul a- tor used for stimulation of the ulnar nerve, as well as for sensing
the integrated e 1 ectronyographi c response. Th e device di spl ayed the EMG response as twitch height (T1) and train-of-four (TOF).
The results of this study revealed significant hypercarbia at high grades of block (II 5-25%) and (l or 2 responses to TOF stimul i).
This hypercarbia was associated with significantly high RR and significantly lOtI TV. When recovery from neuromuscular block occured (T1> 35% and 4 responses to TOF), PETCo2 reached near basal values. Reversal of the residual effect of the neuromuscular block at this point was successful 1, manifested by the patient’s capability to per- form volitional and reflex activities, as well as maintaing near basal.