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Halothane Anaesthesia with Spontaneous Respiration for Tonsillectomy in Children
Author(s) -
Valentin N.,
Lomholt B.,
Thorup M.
Publication year - 1982
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.1399-6576.1982.tb01725.x
Subject(s) - medicine , halothane , capnography , respiration , anesthesia , tonsillectomy , discontinuation , surgery , anatomy
Bain's anaesthetic circuit was used in 22 children undergoing tonsillectomy under halothane anaesthesia with spontaneous respiration. End‐tidal CO 2 was monitored by capnography. The median maximum end‐tidal CO 2 was 7%, and during surgery nine patients had an end‐tidal CO 2 higher than 7%, corresponding to a Paco 2 close to 8 kPa when the arterial to end‐tidal CO 2 difference is taken into consideration. Increase in fresh gas flow or change to a non‐rebreathing system had virtually no effect on end‐tidal CO 2 . However, following discontinuation of halothane or during controlled respiration, acceptable values of end‐tidal CO 2 were reached, leading to the conclusion that respiratory depression was responsible for the high values of end‐tidal CO 2 rather than properties of Bain's circuit or too low gas flow rates.