Title: Application of sevoflurane anesthesia under spontaneous respiration in laser lithotripsy
Abstract: Objective To explore the safety and feasibility of application of sevoflurane anesthesia under spontaneous respiration in laser lithotripsy.Methods Sixty ASAⅠ-Ⅱ patients were randomly divided into two groups(SR group and MV group).SR group(n=30) induced by sevoflurane,the LMA was inserted when the facial muscles relaxed,maintained spontaneous respiration in the operation;MV group(n =30) induced by sevoflurane and vecuronium.After anesthesia induction,the LMA was inserted and treated with mechanically ventilated.SBP,DBP,HR and SPO2 were monitored at different time points:before anesthesia(T0),LMA was inserted(T1),3 minutes after LMA(T2),30 mins after LMA(T3),drawing cannulation(T4),20 mins after drawing cannulation(T5).Inhalation of sevoflurane with end-tidal concentration,blood gas were analyzed.Results There were 3 patients of group S and 2 patients of group M were removed.Both groups obtained satisfactory conditions for intubation,but the time of anesthesia induction of group S was remarkably longer than group M with significant difference(t=28.43,P0.05);inhalation of sevoflurane with end-tidal concentration before intubation in group S was higher than that in group M;the awakening time in group S was shorter than that in the group M;the PetCO2 was higher than that of the group M during anesthesia induction and operation(t=27.61,2.78,4.34,3.10,P0.05),and were in the normal range.Conclusions Application of sevoflurane anesthesia under spontaneous respiration provides with sufficient oxygen and do not cause hypercapnia;but inhalation of sevoflurane with end-tidal concentration should provide very favorable conditions for intubation.Haemodynamics and respiratory function can keep physiological state in the operation and post operation.The operation with low requirements to muscle-relaxing effects can avoid mechanical ventilation.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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