Second-Gen SGA Seal Pressure — FRCA Primary MCQ

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ModeratePhysics & Clinical MeasurementSecond-Gen SGA Seal PressureFRCA Primary

A second-generation supraglottic airway device typically achieves a seal pressure of approximately:

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Correct answer: D — 25-30 cmH2O

Second-generation devices (i-gel / LMA ProSeal / LMA Supreme) achieve seal pressures of approximately 25-30 cmH2O compared to ~15-20 cmH2O for first-generation devices. They also incorporate a gastric drain channel for decompression and aspiration protection.

Reference: Al-Shaikh Stacey 2019 Essentials of Anaesthetic Equipment