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NIBP Oscillometry MAP Direct — FRCA Primary MCQ

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ModeratePhysics & Clinical MeasurementNIBP Oscillometry MAP DirectFRCA Primary

Regarding non-invasive blood pressure (NIBP) measurement by oscillometry the MAP is:

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Correct answer: C — Directly measured as the point of maximum oscillation amplitude

Oscillometric NIBP: the MAP is the directly measured value (corresponding to the point of maximum oscillation amplitude as the cuff deflates). Systolic and diastolic pressures are calculated from the MAP using proprietary algorithms which vary between manufacturers. This is why MAP is the most accurate oscillometric measurement and systolic/diastolic values may vary between devices.

Reference: Al-Shaikh Stacey 2019 Essentials of Anaesthetic Equipment