Extending and encoding existing biological terminologies and datasets for use in the reasoned semantic web

Table 3 American Heart Association classification for systolic and diastolic blood pressure[4]

Classification	Systolic pressure		Diastolic pressure
Classification	mmHg	kPa	mmHg	kPa
Normal	90-119	12-15.9	60-79	8.0-10.5
Pre-hypertension	120-139	16.0-18.5	80-89	10.7-11.9
Stage 1	140-159	18.7-21.2	90-99	12.0-13.2
Stage 2	≥160	≥21.3	≥100	≥13.3
Isolated systolic hypertension	≥140	≥18.7	<90	<12.0

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