Pressure Sensing in Healthcare

Welcome to All Sensors “Put the Pressure on Us” blog. This blog will bring out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities and you. This blog explores pressure sensing in healthcare.

Pressure Sensing in Healthcare

When we’re young, it seems that the thermometer is the essential measurement to determine well versus sick. As we age, pressure becomes increasingly important. Initially, it determines a proper blood pressure level—with less than 120 over 80 (mm Hg) being the desired range.

Proper eye care involves glaucoma testing that uses pressure to determine the onset of this disease. Normal intraocular pressures average between 12-22 mm Hg.

A common tool for detecting the onset of respiratory problems is the spirometer or pneumotachograph. In this case, the reading is airflow rate calculated from a change in pressure drop (∆P) during inhaling and exhaling and can also be used for indirect measurement of lung volumes and capacities. The actual differential pressure measurement is quite low, typically requiring a sensor with as low as ±500 P (±3.75 mm Hg) range to obtain acceptable resolution.

These are the more common pressure measurements that separate a heathy from a sick person. Those with health problems may learn the difference between in vivo and ex vivo pressure measurements, and the use of pressure measurements in respirators, ventilators and more.

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-Dan DeFalco, Marketing Manager, All Sensors Corporation ([email protected])