evidence: - Cuff size. Having a properly fitting cuff is important. Cuffs that fit poorly won't give accurate blood pressure measurements. Ask your healthcare professional what cuff size you need. [...] - Place the cuff on bare skin, not over clothing. A rolled-up sleeve that's tight around your arm can affect the reading. You may need to slip your arm out of the sleeve. [...] - Irving G, et al. Which cuff should I use? Indirect blood pressure measurement for the diagnosis of hypertension in patients with obesity: A diagnostic accuracy review. BMJ Open. 2016; doi:10.1136/bmjopen-2016-012429.