How often should calibration checks be performed on a sphygmomanometer?

• A. Annually
• B. According to manufacturer guidelines
• C. Every six months
• D. When the device is dropped

Answer: (B)

Calibration checks keep the readings trustworthy by confirming the device still measures accurately across its pressure range. The best practice is to follow the manufacturer’s guidelines for how often to calibrate, because different models have different recommended intervals based on design, components, and expected use. Sticking to that schedule helps maintain accuracy, meets quality expectations, and reduces the risk of undetected drift. If the device has been dropped, shows inconsistent readings, or is used heavily in a demanding setting, calibration should be performed as soon as possible per the manual. The process typically involves comparing the device to a known pressure standard, checking for zero or offset errors, and ensuring there are no leaks and that the cuff and valve function properly.