A Comparison to Facilitate Insertion of the Laryngeal Mask: Term of Recovery and Postoperative Nausea and Vomiting after Anesthesia with Propofol-Atracurium and Thiopental-Atracurium
Laryngeal mask is a supraglothic instrument for ventilation of patients who are under anesthesia. Insertion of laryngeal mask requires maintaining sufficient depth of anesthesia to avoid airway reflex (gagging, coughing and spasms). The present study investigated two techniques of anesthesia with propofol-atracurium and thiopental-atracurium to facilitate insertion of the laryngeal mask, term of recovery and postoperative nausea and vomiting. In this prospective, randomized and double-blinded clinical trial, 224 patients undergoing elective laparoscopic class ASA one and two were studied. Patients were divided into two groups of 112 patients - one group with propofol anesthetic and thiopental-atracurium. Then after the induction of anesthesia neuromuscular hemodynamic changes, airway reflex (gagging, coughing and spasms), the ease of insertion of laryngeal mask and the frequency of patient movements' were recorded. The data were analyzed by SPSS V.18. Results indicated that anesthetic technique with propofol-atracurium provides better and more comfortable condition for insertion of laryngeal mask significantly (P<0.05). Hemodynamic changes during induction of anesthesia and five minutes after insertion of the laryngeal mask in first group was more than second one (P<0.05), and nausea and vomiting during recovery in propofol group was significantly lower than thiopental group (P<0.05). Using techniques of anesthesia with propofol - atracurium in inserting laryngeal mask airway in patients who have an indication for the use of this technique is better than anesthesia with thiopental -atracurium.
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