Where should the measurement be read from when measuring urinary output?

• A. At eye level with container on a flat surface
• B. While holding the bedpan up
• C. From the side of the container
• D. From a digital device

Answer: (A)

The main idea is to read the measurement where it is most accurate by eliminating parallax error. To do this, place the graduated container on a flat, stable surface and hold your eyes level with the meniscus—the curved surface of the liquid. Read the measurement at the bottom of that curve, not from an angle.

Reading from the side or while lifting the bedpan introduces distortion, which makes the level appear higher or lower. Using a digital device isn’t the usual method for this manual read unless the scenario specifies a device; otherwise, you rely on the graduated container’s markings.