Abstract
Objective: To evaluate the occurrence of postoperative sore throat after the use of LMA among patients undergoing surgery on intermittent positive pressure ventilation and those on spontaneous mode. Methods: hundred adult patients of ASA I or II status were included and divided into two equal groups. Group I patients were randomly assigned for positive pressure ventilation and group II patients for spontaneous breathing. Anaesthesia was administered with propofol, oxygen nitrous oxide and halothane. The LMA of appropriate size was placed.After completion of surgery, LMA was removed when the patient regained deglutition reflex. Patient was questioned postoperatively for variables of sore throat for three days. Results: In group I, 12% patients complained of mild sore throat in comparison to group II where 6% suffered from mild sore throat (p>0.05). There was no difference in the discomfort levels among males and females. Conclusion: Pharyngolaryngeal discomfort is less after use of LMA under spontaneous ve ntilation in comparison to controlled ventilation.
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