On accuracy and precision of flowmeters used for oxygen therapy in a veterinary teaching hospital

A flowmeter of the smallest maximum capacity within the desired flow range is more appropriate for smaller patients where accurate, precise flow delivery is needed. Although 15.0 L minute−1 flowmeters were accurate at flow settings ≤2.0 L minute−1, the graduated increments do not allow exact flow settings <0.5 L minute−1. Flowmeters of 15 L minute−1 capacity should be useful for high-flow oxygen delivery for which accuracy and precision are not critical.