Most systematic errors in BP measurement can be avoided by having the patient sit quietly for five minutes before a reading is taken, supporting the limb used to measure BP, ensuring the BP cuff is at heart level, using the correct cuff size, and deflating the cuff slowly. Accurate measurement and recording are essential to categorize BP, ascertain BP-related CVD risk, and guide management of hypertension. Although BP measurement in the office setting is relatively easy, errors are common and can result in a misleading estimation of a patient's true BP.