If fully automated oscillometric technique, manometer should display average of 2-3 readings. Step 6: Provide blood pressure readings to patient Provide the patient with his or her SBP/DBP readings both verbally and in writing. Assist the patient interpret the results. Abbreviations: DBP: diastolic blood pressure; HTN: hypertension; SBP: systolic blood pressure The 2019 AHA guidelines on measurement of blood pressure also provide a table of proper blood pressure cuff sizes.[36] Miscuffing can provide erroneous values. Table 3. Proper Blood Pressure Cuff Sizes Cuff Size Arm Circumference (cm) Bladder Dimension (width x length, cm) Abbreviation: cm: centimeter Although SRs and meta-analyses have reported the mean differences (MD) in intra-arterial compared with cuff blood pressure measurements and arm compared with leg blood pressure measurements, whenever possible, decisions concerning diagnosis and management of HTN should be made with brachial cuff determinations.[40,41] Previous evidence suggested that automated blood pressure monitors are accurate for SBP but not DBP measurement in the presence of atrial fibrillation. A recent SR and meta-analysis provided additional support by concluding that, although some monitors have been shown to be accurate with atrial fibrillation, there is considerable heterogeneity between devices, particularly for DBP measurement; accuracy for devices untested in atrial fibrillation cannot be assumed.[42] Although standard blood pressure measurement technique in the office is critical to making correct decisions about the diagnosis and management of HTN, there is widespread failure to use proper technique in clinical practice settings.[43] The reasons for this include lack of knowledge of proper technique, lack of appreciation of the importance of many aspects of proper technique, and resistance to change, especially taking the extra time needed for quiet during the rest and measurement periods. 