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The study aims to determine the impact of different expiratory maneuvers and devices on peak expiratory flow measurement accuracy.

Effect of device and expiratory maneuver technique on peak expiratory flow measurements

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The study aims to determine the impact of different expiratory maneuvers and devices on peak expiratory flow measurement accuracy.
20 healthy adults performed PEF measurements using two expiratory maneuvers with four devices.
Measurements included the Medikro Duo, MIR Spirobank, Vyntus Pneumo, and Mini-Wright PEF meter.
Each subject conducted three measurements for each device and maneuver combination.
PEF measurements varied significantly between devices (F(3,133) = 171.8, p < 0.001).
Spirobank and Vyntus Pneumo showed significantly higher PEF compared to Mini-Wright (average difference 87.1 L/min and 26.5 L/min respectively, both p < 0.001).
No significant difference was observed between short and long expiratory maneuvers (F(1,133) = 2.24, p = 0.137).

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Randomized trial assesses peak expiratory flow across devices and maneuvers in healthy adults, indicating measurement caution.

Csonka et al. (2026) studied this question.

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