· 24-hour mean < 115/75 mmHg (hypertension threshold 130/80 mmHg).

· Day time (awake) < 120/80 mmHg (hypertension threshold 135/85 mmHg).

· Night time (asleep) < 105/65 mmHg (hypertension threshold 120/75 mmHg).

ü Ambulatory BP values above ‘normal’ and below thresholds for hypertension are considered ‘high normal’. Night time (sleeping) average systolic and diastolic BP, both should be at least 10% lower than average day time (awake).

ü Blood pressure load (percentage of time that BP readings exceed hypertension threshold during 24 hours) should be <20%.

ü Blood pressure variability, maximum systolic BP, and morning BP surge should also be taken into account (and targeted by treatment). Treatment targets based on ABP should be lower than the targets for clinic BP readings (e.g. for clinic BP of 140/90, day time ABP equivalent is 136/872).