สาเหตุที่ความดันเลือดควรต่ำกว่า 130/80 ไม่
Normal blood pressure: Lower than 120/80 mmHg. Elevated blood pressure: Between 120-129/80 mmHg. High blood pressure, stage 1: Between 130-139/80-90 mmHg. High blood pressure, stage 2: 140/90 mmHg or higher.
Is 130 over 81 a good blood pressure reading?
Blood pressure lower than 120/80 mm Hg is considered normal. Blood pressure that's 130/80 mm Hg or more is considered high. If your numbers are above normal but under 130/80 mm Hg, you fall into the category of elevated blood pressure. This means you're at risk of developing high blood pressure (3).