Hemodynamic effects of caudal block with laryngeal mask airway ventilation in children undergoing general anesthesia

Objective To investigate the effects of caudal block with laryngeal mask airway(LMA) ventilation on the hemodynamics of children undergoing elective surgery under general anesthesia. Methods Sixty ASA Ⅰ or Ⅱ children undergoing selective lower abdominal surgery were randomly divided into 3 groups (n=20):Group T:endotracheal intubation. Group CT:caudal block and endotracheal intubatio. Group CL:caudal block and laryngeal mask airway(LMA) ventilation. HR,BP,MAP,CVP,SpO2,PetCO2 were monitored during anesthesia.HR,MAP,CVP were recorded at proinduction (T0),intubation(T1),operation(T2),30 min after operation(T3) and 60 min after operation (T4).Recording the dosage of propofol,remifentanil and adverse reactions of postoperation. Results MAP,HR at T1 were significantly higher in group T and group CT than that in group CL.The dosage of propofol and remifentanil were significantly less in group CT and group CL than that in group T. Conclusions Caudal block with LMA ventilation have little side effects on hemodynamics of the children undergoing slective surgery with general anesthesia. Key words: Caudal block ;  Laryngeal mask airway ventilation ;  General anesthesia ;  Endotracheal intubation ;  Hemodynamics ;