Medion MD 15172 Bedienungsanleitung Seite 151

The blood pressure measurement device displays blood pressure
(systolic and diastolic values), pulse, date and time. The following
summary can help you to assess the values you measure:
Range
High blood pressure
Borderline
Normal
Low blood pressure
The classification of blood pressure values is based on a definition
and classification by the WORLD HEALTH ORGANISATION from 1999.
The WHO defines high blood pressure as values above 140 mmHg
(systolic value) and 90 mmHg (diastolic value).
EN-8
Systolic
> 140 mmHg
130 139 mm Hg
> 129 mm Hg
< 90 mmHg
Diastolic
> 90 mmHg
85 89 mm Hg
< 84 mm Hg
< 50 mm Hg