ABSTRACT
Background: The aim of study is to compare I-gel and Air-Q supraglottic airways in terms of - success rate of device insertion, number of attempts taken, haemodynamic parameters before and after device insertion, incidence of trauma and postoperative sore throat, dysphagia. Methods: This randomised single blind study was conducted on 90 patients of age 18-60 years, undergoing elective surgery requiring general anaesthesia. Patients were randomly allocated in two groups- Group I: I-gel (n= 45), Group II: Air-Q (n=45). After preoxygenation, induction and muscle relaxation appropriate size I-gel or Air-Q was inserted and all parameters were noted by an independent observer. For statistical analysis, Student t-test was employed to compare the means and Chi-square test was used for categorical variables. Complications were compared using Fisher’s exact test. Results: The demographic profile of patients in both groups was similar. In all patients supraglottic airway device was inserted within 3 attempts. Mean insertion time in first attempt for I-gel (25.85 ±1.7 sec) was found to be significantly lower than Air-Q (26.73±1.51 sec) [P=0.0128]. Conclusion: We conclude that I-gel is easier and safer than Air- Q when ventilation through LMA is intended during surgery.
ABSTRACT
In this prospective randomized study, success rate of blind tracheal intubation through two different supraglottic airway devices viz. i-gel ® and the intubating laryngeal mask airway (ILMA)® was compared a using conventional polyvinylchloride endotracheal tubes. Eighty patients undergoing elective surgery under general anaesthesia were randomized in two groups comprising of 40 patients each to tracheal intubation using either i-gel or ILMA. After induction of anesthesia, supraglottic airway device(SAD) was inserted and on achieving adequate ventilation with the device, the fibrescopic view of the larynx was obtained through the SAD for laryngeal grading. Then fiberscope was removed and blind tracheal intubation was attempted through the SAD. Success at first attempt and overall tracheal intubation success rates were evaluated and tracheal intubation time was measured.There was no difference in the incidence of adequate ventilation with either of the SAD. The glottic view ( Laryngeal grading ) was better in i-gel group. The grade 1 laryngeal grading was obtained in 82.5% cases in i-gel group as compared to 75% cases in ILMA group. The success rate in first attempt was 65% in i-gel group and 52.55% in ILMA group, while overall success rate was 77.5% in i-gel group as compared to 62.5% in ILMA group. Time taken for successful tracheal intubation through i-gel was lesser (20.4 sec.) as compared to ILMA (30.68 sec.) and the difference was statistically significant (p <0.001). Both the SADs were proved to be useful alternative to conventional laryngoscope for tracheal intubation. In the present study, i-gel had better success rate in tracheal intubation as compared to ILMA.
ABSTRACT
The effects of gabapentin on arterial pressure and heart rate were compared at induction of anaesthesia and at tracheal intubation in a prospective randomized double blind study. Fourty patients of American society of Anaesthesiologists (ASA) physical status I undergoing elective surgery were divided in two groups of twenty each. Twenty patients received oral placebo (Group P), and 20 patients received 900 mg of gabapentin (Group G), 2 hours prior to induction of anaesthesia. Systolic blood pressure (SBP), Diastolic blood pressure (DBP) and Heart rate (HR) were recorded one minute before and after induction of anaesthesia, immediately after intubation and 1,3,5 and 10minutes after intubation. Changes in SBP were statistically insignificant in both the groups. In the gabapentin group, at 0 and 5 minutes, the DBP was significantly less than the placebo group (p<0.05). There was a significant decrease in heart rate in Group G as compared to Group P (p<0.05).Pre medication with 900 mg gabapentin, 2 hours before induction of anaesthesia attenuates the tachycardia associated with laryngoscopy and intubation but not the pressor response completely.