Predicted values of propofol EC 50 and sevoflurane concentration for insertion of laryngeal mask Classic TM and ProSeal TM

Abstract

The estimated concentration of propofol and the sevoflurane concentration needed to allow insertion of the ProSeal are respectively 38 and 20% greater than those needed for insertion of the Classic LMA.

Comparison of the anaesthetic requirement with target-controlled infusion of propofol to insert the laryngeal tube vs. the laryngeal mask

“…In our study, the concentration used to insert the LMA ™ and LT ™ without any patient's reaction could be considered as high when compared with a recent study that reported a Ce t of propofol for LMA ™ insertion around 3.14 Ϯ 0.33 µg mL Ϫ1 [25]. But in that previous study, the use of midazolam premedication and i.v.…”

Propofol concentration requirement for laryngeal mask airway insertion was highest with the ProSeal, next highest with the Fastrach, and lowest with the Classic type, with target-controlled infusion

“…This study showed almost identical results to those that we reported earlier for Cp 50 of cLMA. Kodaka et al [14] reported that the Cp 50 of pLMA insertion was 4.32 F 0.67 lg/mL and was significantly higher than that of cLMA in same study. It showed that Cp 50 of pLMA in our study was significantly higher than that of a previous report (v 2 test, P b .05).…”

“…The differences that must be considered are that they used 2 mg intramuscular midazolam as premedication, whereas our study used no premedication. A size-3 LMA was used for all patients in their study, whereas our study used the size-4 LMA for patients weighing more than 50 kg [14].…”

The proseal™laryngeal mask airway: a review of the literature

“…6 INSERTION TECHNIQUE Insertion is recommended with head extended and lower neck flexed, and may be performed with or without an introducer.…”