Doctors check vital signs such as heart rate and blood pressure, but researchers at the University of Missouri say blood viscosity has been overlooked. Viscosity affects circulation and is linked to six of the top ten causes of death in the United States, including heart disease, cancer and stroke. Thicker blood can force the heart to work harder and raise the risk of clots or tissue damage, the team explains.
The new non-invasive device uses ultrasound waves and signal processing software. It vibrates blood with a continuous sound wave while sensing the response. A powerful algorithm analyzes the signals and, for the first time, measures both blood density and viscosity from the same signal. The device gives accurate, real-time readings without drawing blood, which avoids changing the blood's natural properties.
The project began with a system to monitor engine oil. Nilesh Salvi adapted that idea with help from his mentor Jinglu Tan. William Fay encouraged clinical testing. The researchers continue studies as they prepare for human trials and aim for low-cost, portable prototypes.
Difficult words
- viscosity — A measure of how thick a liquid is.blood viscosity
- monitor — To check or observe something regularly.monitoring
- technology — The use of scientific knowledge for practical purposes.technologies
- revolutionize — To change something very significantly.
- properties — Characteristics or qualities of something.
- component — A part of a larger system.components
- significant — Important or meaningful in some way.
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- How could this technology change medical practices?
- What are other applications for measuring blood viscosity?
- Why might doctors want to monitor blood viscosity continuously?
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