Study Reveals Standard Blood Pressure Monitors Could Miss Up to 30% of Hypertension Cases
Scientists from Cambridge University have discovered why standard blood pressure cuff monitors often provide inaccurate readings, potentially overlooking as many as 30% of hypertension cases. This groundbreaking research, published in PNAS Nexus, indicates that low pressure below the cuff delays the reopening of the artery, resulting in underestimated systolic readings.
The research team, spearheaded by Professor Anurag Agarwal from Cambridge’s Department of Engineering, constructed a physical model to mimic real artery behavior. The aim was to comprehend the mechanism causing these measurement inaccuracies. Their findings suggest that minor protocol adjustments, such as elevating the patient’s arm prior to measurement, could significantly enhance accuracy without necessitating costly new equipment.
This revelation addresses a long-standing clinical enigma that has baffled healthcare professionals for years. The researchers propose that by generating more predictable downstream pressure through arm elevation, the degree of underestimation becomes more consistent and correctable. This could potentially boost hypertension diagnosis rates globally.