BackgroundThe Supreme™ and ProSeal™ laryngeal mask airways (LMAs) are widely used in paediatric anaesthesia; however, LMA use in infants is limited because many anaesthesiologists prefer to use tracheal intubation in infants.In this study, we compared the Supreme and ProSeal LMAs in infants by measuring their performance characteristics, including insertion features, ventilation parameters, induced changes in haemodynamics and rates of postoperative complications.MethodsInfants of ASA physical status I scheduled for elective, minor, lower abdominal surgery were divided into two groups: the Supreme LMA group and the ProSeal LMA group. Times and ease of LMA insertion were noted. The percentages of tidal volume leakage as well as peak, mean and leakage pressures for all infants were measured. Heart rate (HR), oxygen saturation (SpO2) and end tidal carbon dioxide (EtCO2) values were recorded before and after LMA insertion and before and after extubation. After extubation, complications and adverse effects were noted.ResultsDemographic and surgical data were similar between the two groups. LMA insertion times were shorter for the ProSeal group than for the Supreme group (P < 0.002). The mean HR value for the ProSeal group was lower than for the Supreme group (P < 0.011). Both the peak pressure and the leakage percentage for the ProSeal group were statistically lower than for the Supreme group. The leakage pressure for the ProSeal group was statistically higher than for the Supreme group (P < 0.001).ConclusionsThe ProSeal LMA is superior to the Supreme LMA for use in infants due to the ease of insertion, high oropharyngeal leakage pressure and fewer induced changes in haemodynamics.Trial registrationClinicalTrial.gov, NCT03251105, retrospectively registered on 15 Aug 2017.

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We aimed to compare the efficacy of intravenous bloodfluid warming and forced-air warming systems for the prevention of perioperative hypothermia in pediatric patients under six years of age. Methods: Two-hundred children aged 0-6 years, who underwent elective surgery, were included in the study. Group 1 patients were warmed with forced-air warming system at the operating room. Group 2 patients were warmed with intravenous fluid and blood warming systems at the operating room. During the entire operation, heart rate, SpO 2 , end Tidal CO 2 and esophagus temperature values were recorded at 10-minute intervals. The number of patients, who needed rescue warming, the starting time and duration of rescue warming were recorded. The duration of the anesthesia, the duration of the operation, and the time of recovery were recorded. Results: The groups were compared in terms of mean operating room temperature and body temperature and no statistically significant difference was found between the groups. There was no statistically significant difference between the groups for additional rescue warming need and time to rescue warming. The time to recovery was longer in the patients who needed rescue warming. There was a statistically significant positive correlation between the duration of the operation and the duration of the need for rescue warming with a confidence of 99%. Conclusion: In pediatric patients, i.v. fluid warming systems are as effective as forced-air warming systems in avoiding perioperative hypothermia.