Maintaining a healthy blood pressure (BP) is important in preventing cardiovascular events such as heart attack and stroke, and measuring BP is a key step in cardiovascular risk assessment. However, it is not always measured correctly. Readings should be taken from both arms and the higher reading of the two, if there is a difference, should be used and a record should be kept of the preferred arm for future readings. But what about the patient’s position? Does a lying and standing measurement need to be done in all patients? What is an ‘acceptable’ difference? And does it matter?
