Digital Blood Pressure Monitor

DIGITAL BLOOD PRESSURE MONITOR-DEVICE: Digital devices, also called monitors, will give you the systolic and diastolic blood pressures and the heart rate or pulse (number of heartbeats in a minute). There are 2 types. With a semi-automatic device, you will need to pump air into the cuff by squeezing a bulb.
The oscillometric method is employed, which consists on detecting the oscillometric signal on brachial artery, being processed at each pressure step, when the cuff is gradually deflated. Signal sampling is carried out at a rate determined by the heart rate.
More than 89% of aneroid readings and less than 44% of the readings by digital device had absolute difference of 5mm Hg. when compared with the mercury readings for both systolic and diastolic blood pressure. Sensitivity and specificity of aneroid device was higher (86.7% and 98.7%) than digital device (80% and 67.7%).