Does prewarming of i-gel improve insertion and ventilation in anaesthetised and paralysed patients? A prospective, randomised, control trial

Aamuktha Reddy, Nita Varghese, Basavaraj Herekar, Udupi Shenoy

Research output: Contribution to journalArticle

Abstract

Context: I-gel are supraglottic airway devices with non-inflatable gel-like cuff that is believed to mould to body temperature, to seal the airway. Hence a pre-warmed i-gel may seal faster, provide better ventilation and superior leak pressure. Aims: To determine if pre-warming i-gel to 40°C improves insertion and efficacy of ventilation. Methods and Materials: A prospective, randomised, controlled trial was done on 64 patients requiring anaesthesia with muscle relaxation for short duration. For those in group W, i-gel warmed to 40°C for 15 minutes before insertion was used, whereas for those in group C, i-gel kept at room temperature (approximately 23°C) was used. The airway sealing pressure over time, number of attempts and time taken for a successful insertion were noted. Statistical Analysis: Mean sealing pressure between two groups was compared using independent sample t-test. Repeated Measures ANOVA was used to analyse mean sealing pressure at 0, 15 and 30 min. P value ≤0.05 was considered statistically significant. Results: Sealing pressure improves over time in both the groups but the mean sealing pressure was higher in group C when compared to group W at all points of time, however this was clinically and statistically insignificant. Ease of insertion, time for successful insertion, insertion attempts, intra-operative manoeuvres were all comparable between the groups with no adverse effects. Conclusions: Pre-warming of i-gel to 40°C does not improve the success rate of insertion or provide a higher sealing pressure in anaesthetised and paralysed patients when compared to i-gel at room temperature.

Original languageEnglish
Pages (from-to)215-221
Number of pages7
JournalSaudi Journal of Anaesthesia
Volume13
Issue number3
DOIs
Publication statusPublished - 01-07-2019
Externally publishedYes

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Ventilation
Gels
Pressure
Temperature
Muscle Relaxation
Body Temperature
Analysis of Variance
Fungi
Anesthesia
Randomized Controlled Trials
Equipment and Supplies

All Science Journal Classification (ASJC) codes

  • Anesthesiology and Pain Medicine

Cite this

Reddy, Aamuktha ; Varghese, Nita ; Herekar, Basavaraj ; Shenoy, Udupi. / Does prewarming of i-gel improve insertion and ventilation in anaesthetised and paralysed patients? A prospective, randomised, control trial. In: Saudi Journal of Anaesthesia. 2019 ; Vol. 13, No. 3. pp. 215-221.
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abstract = "Context: I-gel are supraglottic airway devices with non-inflatable gel-like cuff that is believed to mould to body temperature, to seal the airway. Hence a pre-warmed i-gel may seal faster, provide better ventilation and superior leak pressure. Aims: To determine if pre-warming i-gel to 40°C improves insertion and efficacy of ventilation. Methods and Materials: A prospective, randomised, controlled trial was done on 64 patients requiring anaesthesia with muscle relaxation for short duration. For those in group W, i-gel warmed to 40°C for 15 minutes before insertion was used, whereas for those in group C, i-gel kept at room temperature (approximately 23°C) was used. The airway sealing pressure over time, number of attempts and time taken for a successful insertion were noted. Statistical Analysis: Mean sealing pressure between two groups was compared using independent sample t-test. Repeated Measures ANOVA was used to analyse mean sealing pressure at 0, 15 and 30 min. P value ≤0.05 was considered statistically significant. Results: Sealing pressure improves over time in both the groups but the mean sealing pressure was higher in group C when compared to group W at all points of time, however this was clinically and statistically insignificant. Ease of insertion, time for successful insertion, insertion attempts, intra-operative manoeuvres were all comparable between the groups with no adverse effects. Conclusions: Pre-warming of i-gel to 40°C does not improve the success rate of insertion or provide a higher sealing pressure in anaesthetised and paralysed patients when compared to i-gel at room temperature.",
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Does prewarming of i-gel improve insertion and ventilation in anaesthetised and paralysed patients? A prospective, randomised, control trial. / Reddy, Aamuktha; Varghese, Nita; Herekar, Basavaraj; Shenoy, Udupi.

In: Saudi Journal of Anaesthesia, Vol. 13, No. 3, 01.07.2019, p. 215-221.

Research output: Contribution to journalArticle

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AU - Reddy, Aamuktha

AU - Varghese, Nita

AU - Herekar, Basavaraj

AU - Shenoy, Udupi

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N2 - Context: I-gel are supraglottic airway devices with non-inflatable gel-like cuff that is believed to mould to body temperature, to seal the airway. Hence a pre-warmed i-gel may seal faster, provide better ventilation and superior leak pressure. Aims: To determine if pre-warming i-gel to 40°C improves insertion and efficacy of ventilation. Methods and Materials: A prospective, randomised, controlled trial was done on 64 patients requiring anaesthesia with muscle relaxation for short duration. For those in group W, i-gel warmed to 40°C for 15 minutes before insertion was used, whereas for those in group C, i-gel kept at room temperature (approximately 23°C) was used. The airway sealing pressure over time, number of attempts and time taken for a successful insertion were noted. Statistical Analysis: Mean sealing pressure between two groups was compared using independent sample t-test. Repeated Measures ANOVA was used to analyse mean sealing pressure at 0, 15 and 30 min. P value ≤0.05 was considered statistically significant. Results: Sealing pressure improves over time in both the groups but the mean sealing pressure was higher in group C when compared to group W at all points of time, however this was clinically and statistically insignificant. Ease of insertion, time for successful insertion, insertion attempts, intra-operative manoeuvres were all comparable between the groups with no adverse effects. Conclusions: Pre-warming of i-gel to 40°C does not improve the success rate of insertion or provide a higher sealing pressure in anaesthetised and paralysed patients when compared to i-gel at room temperature.

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