Premium
Cameco Anaesthetic Ventilator With a Modified Mapleson D Circuit
Author(s) -
Christensen K. Nørregaard,
Jensen J. Kaalund
Publication year - 1979
Publication title -
acta anaesthesiologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 107
eISSN - 1399-6576
pISSN - 0001-5172
DOI - 10.1111/j.1399-6576.1979.tb01469.x
Subject(s) - medicine , anesthesia , ventilation (architecture) , respiratory minute volume , respiratory system , mechanical engineering , engineering
A modified Mapleson D circuit has been used in connection with a Cameco anaesthetic ventilator during neuroradiological procedures in general anaesthesia. In order to increase mobility of the patient, two or three lengths of corrugated rubber tubing were used to connect the patient to the ventilator. Blood gas analysis was carried out in 20 patients after ventilation to steady state with both circuits. The respiratory minute volume and fresh gas flow were preset from B ain's (B ain & S poerel 1975) predictions. No significant difference could be detected in respect to Paco 2 or Po 2 , whether 2 or 3 lengths of tubing were used. Mean values of Paco 2 were higher compared with the results of B ain (0.37 kPa s.d. 0.50). It is concluded that this system gives maximum mobility of the patient during the radiological procedure and offers reliable adjustmcnt of Paco 2 even in patients with apparent increase of intracranial pressure.