I-gel Airway Research Articles

Effects of Different Agents of the Lubrication of i-gel Airway on the Incidence of Postoperative Sore Throat: A Prospective Randomised Controlled Trial.

The aim of this study is to compare the effect of different lubricating agents used with the i-gel® laryngeal mask airwayon the incidence of postoperative sore throat. After obtaining institutional ethics approval, this prospective trial was conducted on 150 patients who were scheduled for minor surgical procedures. The study population was placed in three groups of 50 each, after randomization with computer-generated random numbers, based on the lubricant used (Group LJ: with lignocaine jelly as the lubricant, Group WJ: with water-based jelly as a lubricant, Group NS: with 0.9% normal saline as a lubricant). The time taken to secure the airway (from insertion to the first end-tidal carbon dioxide (ETCO2) tracing and five-point auscultation) and the number of attempts were noted. During extubation, blood staining was noted. In the postoperative period, sore throat was monitored with the numerical rating scale for the first 24 hours. Postoperative hoarseness of voice, cough and difficulty in swallowing were the other parameters noted. The results were entered in a standard spread sheet. Statistical analysis was done using JASP version 0.18.3.0 using the independent samples t-test and the Chi-square test for quantitative variables. All three groups were comparable in terms of demography (p > 0.05). The time taken to insertion, number of attempts and securing of the airway were also comparable amongst the three groups (p > 0.05). Blood staining during LMA removal was comparable between the three groups (p > 0.05). In the postoperative period, sore throat was comparable between the three groups (p > 0.05). The incidence of hoarseness of voice in the postoperative period however was more significant in Group LJ when compared to the other two (p < 0.05). Postoperative swallowing discomfort was also significantly higher in Group LJ than in the other two groups (p < 0.05). We conclude that lignocaine jelly, water-based jelly and normal saline used as lubricating agents on the i-gel airway did not show a difference in the incidence of postoperative sore throat. Lignocaine jelly was associated with a higher incidence of hoarseness of voice and swallowing discomfort when compared to the other lubricants.

Early versus late removal of the I-Gel in paediatric patients with mild upper respiratory tract symptoms undergoing ambulatory ilioinguinal surgery: A prospective observational study.

The optimal timing of I-Gel removal in children with mild respiratory symptoms remains controversial. Consequently, we tried to assess the impact of early versus late I-Gel removal on the incidence of perioperative respiratory adverse events among children aged one to five years undergoing ambulatory surgery under general anaesthesia with I-Gel airway ventilation. The anaesthesia protocol was the same for all patients. Children were divided into two groups according to the approach of I-Gel removal (early versus late). The incidence of perioperative respiratory adverse events after the I-Gel removal was the main outcome, and a multivariable regression was performed to investigate the implication of the I-Gel removal in perioperative respiratory adverse events. According to our study, the incidence of perioperative respiratory adverse events was not correlated to the timing of I-Gel removal. However, prolonged postoperative oxygen support can be seen when the I-Gel is removed in anaesthetized children.

A randomized comparative study to estimate the safety and effectiveness between laryngeal mask airway supreme and I-gel in patients undergoing elective surgeries

Background: Supreme laryngeal mask airway (SLMA) and i-gel airway devices are second generation supraglottic airway devices (SAD) and are good alternatives to intubation during elective surgeries. Aims and Objectives: This study was conducted with the objective of comparing the two SAD with respect to ease of insertion, number of attempts of insertion, insertion time, ease of gastric tube insertion, accompanying hemodynamic changes, incidence of adverse effects like regurgitation, lip and dental trauma, post-operative sore throat, dysphagia, and hoarseness. Materials and Methods: This study was conducted at M.G.M. Medical College and M.Y. hospital, Indore. Eighty patients belonging to ASA class 1 or 2, with Mallampati grading 1 or 2, between age group of 18–60 years and with BMI &lt;30 kg/m2 were selected for the study. After induction of anesthesia, one of the SAD’s (SLMA or i-gel) was inserted following randomization, and accordingly, the patients were divided into two groups of 40 each. Insertion parameters, hemodynamic, and respiratory parameters were noted. Patients were also observed for any possible complication at 1 h and 24 h postoperatively. Results: The Two groups showed no statistically significant difference in terms of demographic characteristics, insertion parameters, hemodynamic, or respiratory parameters (P&gt;0.05). Postoperatively, no significant complications were observed in terms of dental injury, laryngospasm. Ease of gastric tube insertion was found to be more in SLMA group than i-gel and the difference was statistically significant (P=0.0057). Incidence of sore throat after 1 h was found to be more in SLMA group than i-gel group (P=0.048). Conclusion: There was no significant difference between SLMA and i-gel in terms of insertion characteristics and hemodynamic changes. Ease of gastric tube insertion was found to be significantly more in SLMA group than i-gel. Incidence of post-operative sore throat at 1 h was more with SLMA as compared to i-gel.

A Case of General Anaesthesia Using an I-gel Airway for MRI of an Adult Patient With Athetoid Cerebral Palsy

Patients with athetoid cerebral palsy may develop cervical myelopathy owing to repetitive involuntary motion. In these patients, MRI evaluation is required; involuntary motion is problematic, and general anaesthesiaand immobilisation may be necessary. However, MRI studies requiring muscle relaxation and general anesthesia in adults are rare. A 65-year-old man with a history of athetoid cerebral palsy required an MRI of the cervical spine under general anaesthesia. General anaesthesia was administered with 5 mg of midazolam and 50 mg of rocuronium in a room adjacent to the MRI room. The airway was secured using an i-gel airway, and the patient was ventilated using a Jackson-Rees circuit. As the only MRI-compatible monitoring method available at our institution was SpO2 monitoring,blood pressure was monitored by palpation of the dorsal pedal artery, and ventilation was monitored visually by an anaesthesiologist in the MRI room. The MRI was uneventful. After scanning, the patient awoke promptly and was returned to the ward. An MRI scan under general anaesthesia requires monitoring of the patient, securing of the airway and ventilation, and careful selection of suitable anaesthetic agents. Although MRI scans requiring general anaesthesia are rare, anaesthesiologists should be prepared for this eventuality.

Comparison between LMA ProSeal and I-gel airway in anesthetized patients on spontaneous ventilation during daycare procedures: A prospective randomized study.

General anesthesia remains the most popular technique for ambulatory surgeries with patients, surgeons, and anesthesia providers. The supraglottic airway (SGA) devices result in fewer incidences of sore throat, laryngospasm, coughing, and hoarseness as compared to inserting a tracheal tube. This study was conducted to compare two second-generation SGA devices, LMA ProSeal and I-gel airway, in anesthetized patients on spontaneous ventilation during daycare procedures to establish the superior SGA device. This prospective randomized study was done on 90 patients of either sex aged 15-60 years, ASA grade I-II, Mallampatti grade I and II, and BMI between 20 and 30 kg/m2 scheduled for elective surgeries of duration less than 90 min. Patients were randomly allocated into two groups-group A (I-gel) and group B (LMA ProSeal). Insertion parameters, hemodynamic responses, oxygenation, ventilation, peak airway pressure (PAP), and postoperative complications were recorded. Statistical analysis was done using SPSS version 21.0 statistical analysis software. Mean insertion time of LMA ProSeal was found to be significantly higher as compared to I-gel (33.27 ± 3.88 vs 18.49 ± 3.18 s; P < 0.001). No significant difference was found between the groups in the number of attempts and of operators attempted for insertion, as well as in hemodynamic response, oxygenation, and ventilation. Postoperative complications were lesser in group A. I-gel is an easy-to-insert cuffless SGA device requiring lesser time for insertion, provides adequate ventilation with lesser postoperative complications and thus appears to be better than LMA ProSeal.

Comparing the First-Pass Success Rate of the King LTS-D and the i-gel Airway Devices in Out-of-Hospital Cardiac Arrest.

Significant heterogeneity exists internationally in the airway devices used in the pre-hospital setting during cardiac arrest. This study evaluated the first-pass success (FPS) rate of two supraglottic airways (SGAs) used by paramedics during out-of-hospital cardiac arrest: the King LTS-D and the i-gel. By examining 2,680 patient care records compiled by Ambulance New Brunswick between 2015 and 2020, we evaluated the FPS rate of the two SGAs using a 2x2 Pearson chi-square test for association, and a Mann-Whitney U test, to determine whether there were significant differences in FPS rates. Our study demonstrated a statistically significant association between airway devices and FPS favoring the i-gel with an FPS of 90.6% compared to a 76.6% FPS with the King LTS-D;X 2(1) = 96.01,p< 0.001. The odds of successfully inserting the airway on the first attempt were 2.94 times higher if paramedics used the i-gel than if they used the King LTS-D with a 95% CI [2.32, 3.60]. Mann-Whitney's U test for SGA differences favored the i-gel in fewer attempts for successful insertion (z= -4.357,p< 0.001,d= 0.15). Among patients in New Brunswick with out-of-hospital cardiac arrest, paramedics had a higher FPS rate with the i-gel compared to the King LTS-D. Our study also found a statistically significant difference between the King LTS-D and i-gel, favoring the i-gel in fewer attempts. Our findings suggest that the i-gel provides a more consistent FPS rate compared to the King LTS-D within our study populations; however, further research is necessary to determine the clinical implications of this. While multiple attempts at tracheal intubation are associated with negative clinical outcomes, no such evidence exists for SGAs.

A comparison of laryngeal mask airway I-gel and Supreme during general anesthesia for lower abdominal surgery in children

Background: Both laryngeal mask airway I-gel and Supreme have been available for clinical use, but there was no comparison between two devices. This study was designed to compare the efficacy and complications of the laryngeal mask airway I-gel and Supreme in children undergoing general anesthesia for lower abdominal surgery. Methods: One hundred and twenty children were randomly assigned to either the I-gel or the Supreme group (60 children in each group). All patients of the two groups received the same protocol of general anesthesia. Evaluation criteria included successful mask insertion rate, ease of insertion, insertion time, and number of adjustments needed during anesthesia maintenace and postoperative complications. Results: There were no differences in the demographic data between the two groups. The success rate of insertion in the first attempt of the I-gel group was 94.8% and the Supreme group (98.3%) (p&gt;0.05). According to ease of placement, grade 1 (very easy) ratios of Supreme, and I-gel were 40% and 3.3%, respectively (p&lt;0.01). The insertion time of the I-gel was longer than that of Supreme (p &lt; 0.05). The rate of airway manipulations during anesthesia maintenance of Supreme, and I-gel group were 5% and 11.7%, respectively (p &gt; 0.05). The most common complication was cough, with the rate of 17% in I-gel group and 5% in Supreme group (p&lt;0.05). There were no differences in other complications between both groups. Conclusions: Both I-gel and Supreme provided a satisfactory airway during general anesthesia in children. Insertion of Supreme was significantly easier and more rapid than insertion of I-gel, and the incidence of cough after surgery was significantly lower with Supreme than I-gel. Key words: Laryngeal mask airway, I-gel, Supreme, children

A mixed methods end-user assessment to determine the ideal supraglottic airway device for inclusion into the medic's aid bag.

Many advancements in supraglottic airway technology have occurred since the start of the Global War on Terrorism. While the Tactical Combat Casualty Care guidelines previously recommend the i-gel device, this is based on little data and minimal end-user input. We sought to use a mixed methods approach to investigate the properties of an ideal device for inclusion into the medic's aid bag. We performed prospective, serial qualitative studies to uncover and articulate themes relative to airway device usability with 68W-combat medics. 68W are trained roughly to the level of a civilian advanced emergency medical technician with a heavier focus on trauma care. Physicians with airway expertise demonstrated the use of each device and provided formal training on all the presented devices. We then administered performed focus groups to solicit end-user feedback along with survey data. We enrolled 250 medics during the study. The preponderance of medics were of the rank E4 (28%) and E5 (44%). Only 35% reported ever placing a supraglottic airway in a real human. When reporting on usability, the i-gel had the highest median score, ease of manipulation, grip comfort and ease of insertion while also scoring the best in regard to requiring minimal training. The other compared devices had no clear highest score. Qualitative data saturated around a strong preference for the BaskaMask and/or the i-gel airway device, with the least favorite being the AirQ and the LMA Fastrach airway devises. There was a strong qualitative alignment in how both the BaskaMask and i-gel provided ease of use and simplicity of training. There were strong qualitative preferences for two specific airway devices: Baska Mask and i-gel. However, many medics commented on their previous experience with the i-gel compared with the other devices, which may have biased them toward the i-gel. The overall data suggest that medics would prefer a device engineered with features from several devices. Therapeutic/care management; Level V.

Comparison of the clinical performance of i-gel and Ambu laryngeal masks in anaesthetised paediatric patients: A meta-analysis.

BACKGROUNDPaediatric supraglottic airway devices (SGAs) are widely used in routine anaesthesia and serve as primary or back-up devices for difficult airway management. The inflatable Ambu laryngeal masks and non-inflatable i-gel are two improvements of SGAs based on classic laryngeal masks. The clinical performance and safety of these two devices in paediatric patients are still unclear and warrant further investigation.AIMTo perform a systematic review and meta-analysis on the clinical performance and safety of Ambu laryngeal masks and i-gel in anaesthetised paediatric patients.METHODSMEDLINE, Embase, Web of Science and Cochrane Central Register of Controlled Trials were searched from inception dates to April 2020. We identified published randomised controlled trials (RCTs) in which the intervention involved the use of Ambu laryngeal masks and i-gel in anaesthetised paediatric patients (age < 18 years). We assessed the oropharyngeal leak pressure (OLP) as the primary outcome. The secondary outcomes were insertion time, success rate of insertion on the first attempt, and incidence of adverse events.RESULTSAfter searching for all relevant trials published up to April 2020, data from seven RCTs with a total of 667 paediatric patients (323 and 344 participants in the i-gel and Ambu groups, respectively) were evaluated. The mean OLP in anaesthetised paediatric patients was lower in the Ambu group [21.82 cmH2O for Ambu vs 23.98 cmH2O for i-gel, P = 0.003, 95% confidence interval (CI): -3.58 to -0.75, I2 = 68%, Mantel-Haenszel random model]. We did not find any clear evidence of differences between the devices in terms of insertion time, success rate of insertion, and incidence of adverse events except for blood staining (risk ratio 5.86, 95%CI: 1.76 to 19.46, P = 0.004, I2 = 0, fixed-effect model).CONCLUSIONThe i-gel airway may provide a better seal and is therefore probably more suitable than the Ambu laryngeal mask airway in anaesthetised paediatric patients. However, the evidence is insufficient to allow making firm conclusions or to guide clinical practice, owing to the small number of relevant published studies.

To compare the frequency of postoperative sore throat with I-gel versus laryngeal mask airway in patients

Background: In case of general anesthesia, airway maintenance along with least complications is the most important goal of team of anesthesiologists. In case of clinical practice, the laryngeal mask airway (LMA) devices have superiority in managing supraglottic airway. Recently i-gel airway has been introduced as supraglottic airway equipment (disposable). Aim: To make comparison between laryngeal mask and I-gel with respect to postoperative complication of sore throat in case of patients who were given general anesthesia. Study design: Randomized trial Setting: Anesthesia Department Study duration: 6 after synopsis approval in total 6months of duration Methods: Candidates were divided randomly divided into two groups. In case of members of group A, patients were given i-gel where as members of group B, disposable LMA was given. General anesthesia was administered according to the standardized protocols. A day after operation, candidates were check post operatively for 24 hours, for sore throat and information was documented on Performa. Results: The candidates mean age was 44.23±15.11years in case of i-gel group members whereas 46.10±15.56 years in case of LMA group. In case of i-gel group, there were about twenty five males members and thirty five were females members . In case of LMA group members, there were about twenty six males and thirty four female members . In present case research, sore throat postoperatively was seen in case of 17(14.2%) cases, i.e. 4 (6.7%) in i-gel group while 13(21.7%) in case of LMA group. The significant difference was witnessed between members of both groups (p&lt;0.05). Conclusion: Thus i-gel is better than LMA for general anesthesia as it has fewer chances of side effects like postoperative sore throat. Keywords: Postoperative sore throat, I-gel, laryngeal mask airway, general anesthesia

A Randomised Control Trial Comparing the Efficacy of LMA-Supreme and I-Gel as Rescue Ventilatory Device in Patients with Simulated Difficult Airway Undergoing Anaesthesia with Controlled Ventilation

Introduction: In an unanticipated difficult airway or in an emergency situation of cannot-intubate-cannot-ventilate scenario, Supraglottic Airway Devices (SGD) are recommended as rescue devices for establishing airway quickly to prevent hypoxia. Aim: To compare efficacy of i-gel airway and Laryngeal Mask Airway supreme (LMA supreme) as ventilatory devices and the time taken for their insertion in anaesthetised and paralysed patients with simulated difficult airway. Materials and Methods: One hundred and eighty adult patients with simulated difficult airway were randomly allocated to two groups of 90 patients each. In group I: i-gel and in group S: LMA supreme was inserted. Primary outcome studied was time taken for insertion of SGD. Secondary outcomes were the number of attempts taken for insertion of device, oropharyngeal leak pressure, ease of gastric catheter insertion, fibreoptic bronchoscopic view of anatomical alignment of device with glottic opening. Quantitative variables were compared using unpaired t-test/Mann-Whitney Test, between the two groups. Qualitative variable were compared using Chi-Square test/Fisher’s-exact test. Results: Total time taken for successful insertion was significantly shorter with group i-gel as compared to group LMA supreme {median (IQR) {19 (18.25-21)} versus {24 (23-24)} with p-value ≤0.0001. Overall success rate of insertion (96.67% vs 97.78%, p=1.000) and oropharyngeal leak pressure (p-value=0.555) of i-gel and LMA-S were comparable. i-gel has better anatomic alignment with glottic opening as compared to LMA-S (p-value ≤0.0001). Gastric tube insertion was easy in all patients in both the groups. Conclusion: Shorter time for the insertion of i-gel was observed due to absence of inflatable cuff, although both LMA-S and i-gel are equally efficacious as ventilatory devices in patients with simulated difficult airway under general anaesthesia with controlled ventilation.

Use of an Airway Exchange Catheter for Removal of an I-Gel Airway.

Use of an Airway Exchange Catheter for Removal of an I-Gel Airway.

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English

Endosonographic evaluation of the mediastinum through the i-gel O2 supraglottic airway device.

Endobronchial ultrasound (EBUS) is an endoscopic diagnostic procedure combining flexible fibrobronchoscopy with ultrasound techniques; it allows transbronchial needle aspiration biopsy for the diagnosis and staging of mediastinal masses. We present our preliminary experience with the use of the i-gel O2 supraglottic airway device for management of EBUS procedures. An observational study on 39 patients who underwent EBUS under general anesthesia was performed. Airways were managed with i-gel O2 by anesthesiologists unfamiliar with it. Data collected included patient characteristics, i-gel O2 positioning, mechanical ventilation, procedure, and complications occurring during and after the EBUS. The i-gel airway was successfully positioned during the first attempt in 34/39 cases (87.2%). No failed positioning was recorded. The EBUS scope easily passed through the i-gel in all patients and in 14 (35.6%) cases it was also inserted through the esophagus allowing the examination or fine needle aspiration of paraesophageal lymph nodes. In one case, during the EBUS procedure, the i-gel was dislocated but easily put in place again. During EBUS, air leakages were significant in 2 cases (5.1%) and minimal in 14 cases (35.9%). A brief self-solved laryngospasm and a bronchospasm during bronchoscopy were recorded. After recovery, no patients had dysphagia; mild odynophagia and pharyngodinia were referred by 2 (5.1%) and 12 (30.1%) patients, respectively. The i-gel O2 airway is easy to position and manage even for anesthesiologists unfamiliar with it. This supraglottic airway device is suitable for a complete endosonographic evaluation of the mediastinum.

Comparison of Two Supraglottic Airway Devices: I-gel Airway and ProSeal Laryngeal Mask Airway Following Digital Insertion in Nonparalyzed Anesthetized Patients.

Aims:The study is aimed to compare the efficacy of I-gel and ProSeal laryngeal mask airway (PLMA) in nonparalysed anesthetized individuals following manufacturer-recommended digital insertion.Materials and Methods:In this prospective randomized observational study, 40 American Society of Anesthesiologists I and II patients, aged 18–65 years scheduled for elective surgical procedures were allocated either to PLMA group (Group P, n = 20) or the I-gel group (Group I, n = 20). Following digital insertion of PLMA or I-gel, the following parameters were compared: insertion time, ease of insertion, number of attempts, failed insertion, airway reaction during insertion, oropharyngeal leak (OPL) pressure, and gastric insufflation on auscultation. Fiberoptic view of both the channels of the airway devices and ease of insertion of 12 F Ryle's tube through gastric drain channel were graded. Postoperative complications were also noted.Results:First attempt and overall insertion success were similar (PLMA, 85% and 100%; I-gel 80% and 100%, respectively). Mean (standard deviation) insertion times were similar (PLMA, 27.40 [11.51] s; I-gel 25.45 [9.03] s). Mean OPL pressure was 3.5 cm H2O higher with PLMA (P < 0.012). The passage of Ryle's tube was easier through I-gel than PLMA. Grade I glottic view (full view of the vocal cords) was visible in 17 (85%) patients who were managed with I-gel whereas only 9 (45%) patients had Grade I view in the PLMA group.Conclusion:The time required for digital insertion of PLMA and I-gel in nonparalyzed anesthetized patients is similar but PLMA forms a better oropharyngeal seal. I-gel is better positioned over the laryngeal framework and esophagus. I-gel allows easier passage of Ryle's tube through its drain channel than PLMA. The incidence and severity of postoperative sore throat and hoarseness was higher with PLMA.

Choosing appropriate size of I-Gel® for initial success insertion: a prospective comparative study

PurposeThe optimal size of the I-Gel® remains unclear since the manufacturer's weight-based formula (size 3 for weight < 50 kg, size 4 for weight 50–90 kg, and size 5 for weight > 90 kg) for the laryngeal mask airway I-Gel® is not evidence-based. We hypothesised that sex may also guide the choice of I-Gel® size. MethodsInsertion success rates of the I-Gel® chosen according to the weight-based formula were prospectively recorded and compared with those of a patients’ cohort ventilated with an I-Gel® chosen according to the sex-based formula recorded. Two periods of 18 months were randomised in three independent hospitals in France to study each choice strategy. Patients requiring I-Gel® size change were compared with those who where successfully ventilated with the initially chosen device. Complications linked to the I-Gel® and factors for changing the size of the I-Gel® were also recorded and analysed. ResultsData from 900 patients were prospectively collected in the three participating centres. The overall initial ventilation was inadequate in 80 cases, including 7% (n = 31) in the weight-based group and 3% (n = 13) in the sex-based group (P = 0.01). In the weight-based group, changing size of I-Gel® was successful in 28 (90%) cases. In the sex-based group, changing size of I-Gel® was useful in 1 case only. Endotracheal tube insertion was necessary in 15 cases despite changing I-Gel® size, including 3 cases in the weight-based group and 12 cases in the sex-based group. Ease of insertion and postoperative pharyngo-laryngeal problems were similar between groups with or without changing size of I-Gel®. ConclusionAdequate ventilation is achieved most of the time using size selection for the I-Gel® laryngeal mask airway according to the manufacturer's weight-based formula. However, our results suggest that the sex-based formula in healthy, anaesthetised, adult patients may also be appropriate for I-Gel® size choice.

Comparison of I-gel for general anesthesia in obese and nonobese patients.

Context:I-gel is a second-generation supraglottic airway device. Despite several studies on i-gel, there are very few studies on the use of i-gel in obese patients.Aims:The aim of the study was to compare the clinical performance of i-gel between obese and nonobese patients.Settings and Design:Prospective, controlled, nonrandomized, hospital-based study.Subjects and Methods:After obtaining informed consent, patients were divided into two groups of 16 patients each: group O consisted of patients with body mass index (BMI) >30 kg/m2 and Group C consisted of patients with BMI 18.5–29.9 kg/m2. I-gel was inserted after induction of anesthesia and muscle relaxation. Oropharyngeal leak pressure (OLP) (primary outcome variable), leak fraction, time taken to insert the device, ease of insertion, fiberoptic view of glottis through i-gel's airway tube, and adverse effects were recorded.Statistical Analysis Used:Data were analyzed using SPSS 20. Continuous, ordinal, and categorical variables were analyzed using students t-test, Mann–Whitney U–test, and Fischer's exact test, respectively.Results:OLP was slightly higher in Group O (25.38 ± 4.79 cm H2O) but was not statistically different than Group C (27.38 ± 4.38 cm H2O). Other parameters except weight and BMI (which were higher in Group O) were statistically similar in both groups. There was no statistical difference in side effects.Conclusions:We concluded that i-gel is as effective in obese patients as in nonobese patients when used for securing the airway for surgical procedures.

A Novel and Modified Technique in the Prone Position for Radiotherapy Processes in Children

The i-gel has a thick airway tube and occasionally, achieving the airway can be difficult because of obstruction in the prone position. The authors aimed at solving this problem and used a modified i-gel airway in the prone position for radiotherapy processes in children.

Erratum to Comparison of I-Gel and classic Laryngeal Mask Airway in paediatric population: a parallel group study

This erratum is issued to a recently published original article titled "Comparison of I-Gel and classic Laryngeal Mask Airway in paediatric population: a parallel group study" in 2016, Volume 3, Number 2.

Clinical observation of laryngeal mask airway I-gel in patients undergoing microvascular decompression of facial nerve

Objective To assess the efficacy of laryngeal mask airway I-gel(LMA I-gel) in patients undergoing microvascular decompression of facial nerve. Methods Ninety ASA patients withⅠ or Ⅱ of both sexes, aged 20-55 y, body mass index of 18-25 kg/m2, of Mallampati Ⅰ-Ⅲ, undergoing microvascular decompression of facial nerve, were completely randomly divided into 3 groups(n=30): I-gel group (group I), Supreme group (group S), endotracheal intubation group(group Q). The time spent for intubation and success rate of intubation for the first time were recorded in the three groups, Oropharyngeal leak pressure and fiberoptic laryngoscopy scores were observed in lateral position in group I and group S. Vital signs were monitered after entering the operating room(T0), before intubation(T1), intubation(T2), before extubation(T3) extubation immediately(T4). The extubation time of laryngeal mask and tracheal catheter and consciousness recovery time were observed. The postoperative cough, sore throat, nausea, vomiting and other adverse reactions were recorded too. Results Regarding the time spent for intubation, group I and group S was shorter than group Q[(12±3), (16±4) s vs (30±6) s](P 0.05). Oropharyngeal leak pressure in lateral position was more higher in group I than in group S[(28±3) cmH2O(1 cmH2O=0.098 kPa) vs (24±4) cmH2O](P 0.05). Conclusions Laryngeal mask I-gel, laryngeal mask supreme and tracheal can be used effectively for microvascular decompression of facial nerve, but laryngeal mask I-gel can provide adequate ventilation during operation with less complications, more easy insertion and more stable hemodynamics. Key words: Laryngeal mask; Microvascular decompression of facial nerve; Airway management