The use of this technology has been studied in adults and children with varying findings. Instead, a sensor is placed on your wrist, a button is pressed to activate a light source, and the sensor monitors the changes in blood volume in the vessels under your skin after being exposed to light. With the advent of photoplethysmography, home monitoring became easier because there was no need for inflating anything. If you wanted to check more frequently, you’d have to spend more time in the doctor’s office. But this “auscultatory” method only gives you one reading per inflation. This forces blood to move out of your arteries and into surrounding tissues, where the machine can measure it. When your doctor or nurse takes your blood pressure, they wrap an elastic band around your arm and inflate a small rubber ball on the end of the stethoscope to press against your arm. But newer technologies have made it possible for us to accurately and continuously monitor our heart rate and blood pressure at home without costly equipment or complicated procedures. When measuring our blood pressure at home, we often picture a big machine in a doctor’s office or hospital lab. The Technology Behind Blood Pressure Measurement
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