Optimum sevoflurane concentration for I-gel insertion in unpremedicated children - 12/11/15
, Deepika Bansal, MD c, Jagat Ram, MS bAbstract |
Study objective |
End-tidal concentration of sevoflurane for I-gel insertion in children has not been studied. This study was designed to determine the sevoflurane EC50 and EC95 for I-gel placement in children as compared with classic laryngeal mask airway (CLMA) placement.
Design |
The design was a prospective, randomized controlled study.
Settings |
The setting was single tertiary care center.
Patients |
Pediatric subjects of either sex aged 1.5-8 years, weighing 10-20 kg having American Society of Anesthesiologists physical status I/II of undergoing elective cataract surgery were included in the study.
Intervention |
Induction and maintenance of anesthesia were achieved with sevoflurane and oxygen with preservation of spontaneous breathing. Children were randomly subjected to either I-gel size 2 (group I) or CLMA size 2 (group II) insertion. The target end-tidal sevoflurane concentration (ET SEVO) was maintained for 8-10 minutes before supraglottic airway device was inserted in both the groups. In the first child, the ET SEVO was kept at 2% and was increased or decreased by 0.2% in the next child depending on the previous child's response according to Dixon method. After each supraglottic airway device insertion, child was observed for 1 minute for any “movement” or “no movement.”
Measurements |
The measurements were EC50 and EC95 for I-gel and CLMA placement in children.
Main results |
EC50 and EC95 for group I were 0.94% (0.83%-1.06%) and 1.26% (1.12%-1.66%) and for group II were 1.9% (1.70%-2.1%) and 2.54% (2.24%-3.41%), respectively.
Conclusion |
I-gel insertion in children can be accomplished at nearly half ET SEVO (0.94%) of that required for CLMA insertion (1.9%).
Le texte complet de cet article est disponible en PDF.Highlights |
• | We studied sevoflurane EC50 for I-gel insertion in children. |
• | We found that I-gel insertion in children can be accomplished at nearly half end-tidal sevoflurane concentration (0.094%) of that required for CLMA insertion (1.9%). |
• | All children in both the groups did not have any major airway-related complication. |
Keywords : Cataract surgery, CLMA, I-gel, Sevoflurane
Plan
| ☆ | Institution where work was done: Post Graduate Institute of Medical Education and Research, Chandigarh, India. |
| ☆☆ | This study was conducted after approval of Institute Ethics Committee of Post Graduate Institute of Medical Education and Research (NK/1233/Deptt/3561) and was registered with the Clinical Trial Registry of India with an assigned number of CTRI/2014/04/004517. |
| ★ | Funding: This research was carried out without funding. |
| ★★ | Conflict of interest: No conflicts of interest declared. |
Vol 27 - N° 8
P. 627-631 - décembre 2015 Retour au numéro
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