Acta anaesthesiologica Scandinavica · 2013
Post-operative hypercapnia-induced hyperpnoea accelerates recovery from sevoflurane anaesthesia: a prospective randomised controlled trial.
СтатьяРандомизированное исследованиеПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Katznelson R, Djaiani G, Naughton F, Wasowicz M, Ragoonanan T, Duffin J, Fedorko L, Murphy J, Fisher J A
Аннотация
BACKGROUND: The time to recovery from vapour anaesthesia is shortened by an increase in ventilation while maintaining normocapnia. Hypercapnia during emergence from anaesthesia in spontaneously breathing patients also increases anaesthetic clearance from the brain by increasing cerebral blood flow. We hypothesised that hypercapnia-induced hyperpnoea accelerates emergence from sevoflurane anaesthesia compared to the standard anaesthesia protocol.
METHODS: After Ethics Review Board approval, 44 ASA I-III patients undergoing elective gynaecological surgery were randomised after surgery to either hypercapnic hyperpnoea or control groups. In the hypercapnic hyperpnoea group, the end-tidal CO2 was adjusted to a range of 6.0-7.3 kPa to maintain a minute ventilation of 10-15 l/min. Recovery indices were compared using unpaired t-tests and ANOVA.
RESULTS: Prior to extubation, minute ventilation and end-tidal CO2 in hypercapnic hyperpnoea and control groups were 10.3 ± 1.7 l/min vs. 5.4 ± 1.2 l/min (P < 0.001) and 6.6 ± 0.6 kPa and 5.2 ± 0.5 kPa (P < 0.001), respectively. Compared to control, the study group had shorter time to extubation [4.4 ± 1.3 (SD) vs. 9.8 ± 4.4 min, P < 0.01], BIS recovery to > 75 (2.4 ± 0.9 vs. 6.1 ± 3.1 min, P < 0.01), eye opening (3.9 ± 1.6 vs. 9.8 ± 6.2 min, P < 0.01), eligibility for leaving operating room (5.1 ± 1.2 vs. 11.1 ± 4.6 min, P < 0.01), and post-anaesthesia care unit (73.9 ± 14.2 vs. 89.4 ± 22.6)
CONCLUSION: Hypercapnic hyperpnoea in spontaneously breathing patients halves the time of recovery from sevoflurane-induced anaesthesia in the operating room.
METHODS: After Ethics Review Board approval, 44 ASA I-III patients undergoing elective gynaecological surgery were randomised after surgery to either hypercapnic hyperpnoea or control groups. In the hypercapnic hyperpnoea group, the end-tidal CO2 was adjusted to a range of 6.0-7.3 kPa to maintain a minute ventilation of 10-15 l/min. Recovery indices were compared using unpaired t-tests and ANOVA.
RESULTS: Prior to extubation, minute ventilation and end-tidal CO2 in hypercapnic hyperpnoea and control groups were 10.3 ± 1.7 l/min vs. 5.4 ± 1.2 l/min (P < 0.001) and 6.6 ± 0.6 kPa and 5.2 ± 0.5 kPa (P < 0.001), respectively. Compared to control, the study group had shorter time to extubation [4.4 ± 1.3 (SD) vs. 9.8 ± 4.4 min, P < 0.01], BIS recovery to > 75 (2.4 ± 0.9 vs. 6.1 ± 3.1 min, P < 0.01), eye opening (3.9 ± 1.6 vs. 9.8 ± 6.2 min, P < 0.01), eligibility for leaving operating room (5.1 ± 1.2 vs. 11.1 ± 4.6 min, P < 0.01), and post-anaesthesia care unit (73.9 ± 14.2 vs. 89.4 ± 22.6)
CONCLUSION: Hypercapnic hyperpnoea in spontaneously breathing patients halves the time of recovery from sevoflurane-induced anaesthesia in the operating room.