A blood pressure reading chart is a chart that is used to determine whether blood pressure readings are normal, abnormal or borderline, according to Mayo Clinic. In the chart published by Mayo Clinic, blood pressure readings are divided into four categories.
The categories for the blood pressure reading chart on Mayo Clinic's website include ranges between 120 systolic and below 80 diastolic, between 120 and 139 systolic and between 80 and 80 diastolic, between 140 and 159 diastolic and between 90 and 99 systolic, and 160 or higher systolic and 100 or higher diastolic. These categories indicate normal blood pressure, pre-hypertension, stage 1 hypertension and stage 2 hypertension, respectively. In addition to readings, the chart also explains the action that should be taken by the person reading the particular ranges, such as maintenance of a healthy lifestyle and medication management.