Ambulatory Blood Pressure Monitoring (ABPM)

It is useful for the following reasons:

• Suspected white-coat hypertension (clinic BP reading taken by a doctor is higher than corresponding readings taken by a nurse or other trained practitioner in the same setting).
• Suspected masked hypertension (untreated subject with normal clinic BP and elevated during normal activity).
• Hypertension despite appropriate treatment.
• Titrating BP treatment.
• Suspected of confirmed sleep apnoea.
• Syncope ('Blackout’) or other symptoms suggesting orthostatic hypotension (significant drop in BP from lying-to-sitting-to-standing positions).