The Problem of Measuring Blood Pressure.
Abstract: Blood Pressure is measured through a person’s handwriting based upon the B2BXB Ltd HAST software which uses Graphometry mathematical techniques. Current MAP blood pressure machines retain a 18% error rate, and patients can easily suffer white coat syndrome. We believe HAST will provide a more reliable and accurate method of monitoring than standard blood pressure machines.
Keywords: Evidence base, Handwriting, Graphometry, Mean Average Pressure, Systolic Blood Pressure (SBP), Diastolic Blood Pressure (DBP), MAP Blood Pressure Machines, Measured Outcomes. Hypertension, Hypotension, White Coat Syndrome, White Coat Hypertension, Masked Hypertension, Cardiovascular Disease (CVD).
Introduction:
If stress induced elevation is not accounted for during blood pressure assessment, a significant proportion of individuals may be incorrectly classified as hypertensive. Because many UK GP practices rely on single clinic readings or unstructured home measurements—often taken while the patient is anxious, rushed, or under socioeconomic pressure—there is a substantial risk of over diagnosis. This raises an important question: how many patients are being prescribed antihypertensive medication not because of true underlying pathology, but because their blood pressure was measured during a period of acute or chronic stress? Over prescription carries both clinical and economic consequences, including unnecessary medication exposure, avoidable side effects, and increased financial burden on the NHS. These concerns highlight the need for low stress, context independent assessment methods, such as handwriting based estimation, which may reduce misclassification and improve the accuracy of hypertension diagnosis.