An ambulatory blood pressure monitor is a portable blood pressure recording device. It is used to record blood pressure readings at specified times during a 24-hour period. The monitor consists of an arm cuff attached by a flexible rubber tube to a light-weight monitor. The monitor sits in a pouch held by a waist belt or shoulder strap. This test is usually ordered if a diagnosis of high blood pressure (hypertension) is suspected.

A one-time blood pressure measurement in a doctor’s office or clinic setting is often not enough to confirm whether or not your blood pressure is too high or even, in some cases, too low. If your doctor suspects that you have hypertension or other blood pressure problems, he or she may refer you for ambulatory blood pressure monitoring.