Why is it useful to measure blood pressure at home? Measuring blood pressure by a doctor in the hospital tends to stimulate nervousness and may even create high blood pressure. Blood pressure also varies in accordance with variety of conditions and so judgment is not possible on the basis of single measurement. Regular home measuring lets you submit to your doctor a record of your measurement overtime. This information may provide a better reference of what your blood pressure really is, and can help your doctor make important decisions about your diagnosis and treatment.