Ambulatory blood pressure monitoring — Twenty-four-hour ABPM is the preferred
method for confirming the diagnosis of hypertension and white coat hypertension but has
limited availability in routine clinical practice. High-quality data suggest that ABPM predicts
target-organ damage and cardiovascular events better than office blood pressure
readings. ABPM records the blood pressure at preset intervals (usually every 15 to 20
minutes during the day and every 30 to 60 minutes during sleep). ABPM can identify or
confirm white coat and masked hypertension and can also be used to confirm normal
blood pressure readings obtained by self-monitoring at home (
table 3
) [
12
]. It is also the
only method of blood pressure measurement that can reliably obtain nocturnal readings.
(See
"Out-of-office blood pressure measurement: Ambulatory and self-measured blood
pressure monitoring"
.)
In addition to patients with suspected white coat hypertension, ABPM should be
considered in the following circumstances:
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