A blood pressure monitor, also known as a sphygmomanometer, blood pressure meter, or blood pressure gauge, is a device used to measure blood pressure, composed of an inflatable cuff to collapse and then release the artery under the cuff in a controlled manner, and a mercury or mechanical manometer to measure the pressure. It is always used in conjunction with a means to determine at what pressure blood flow is just starting, and at what pressure it is unimpeded. Manual sphygmomanometers are used in conjunction with a stethoscope. A sphygmomanometer consists of an inflatable cuff, a measuring unit (the mercury manometer, or aneroid gauge), and a mechanism for inflation which may be a manually operated bulb and valve or a pump operated electrically.
Types of Blood pressure monitor :
A stethoscope is generally required for auscultation. Manual meters are used by trained practitioners, and, while it is possible to obtain a basic reading through palpation alone, this only yields the systolic pressure.
• Mercury sphygmomanometers are considered the gold standard. They show blood pressure by affecting the height of a column of mercury, which does not require recalibration. Because of their accuracy, they are often used in clinical trials of drugs and in clinical evaluations of high-risk patients, including pregnant women.
Digital meters employ oscillometric measurements and electronic calculations rather than auscultation. They may use manual or automatic inflation, but both types are electronic, easy to operate without training, and can be used in noisy environments. They measure systolic and diastolic pressures by oscillometric detection, employing either deformable membranes that are measured using differential capacitance, or differential piezoresistance, and they include a microprocessor.
The person walks with the frame surrounding their front and sides and their hands provide additional support by holding on to the top of the sides of the frame.