[[Blood pressure]] above 139/89 is considered hypertension. The [[American Heart Association]] groups blood pressure into four categories<ref>http://americanheart.org/presenter.jhtml?identifier=2112</ref>:
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[[Blood pressure]] above 139/89 is considered hypertension. The [[American Heart Association]] groups blood pressure into four categories:<ref>http://americanheart.org/presenter.jhtml?identifier=2112</ref>