Wednesday March 20, 2019

New Wearable Patch That Helps in Monitoring Blood Pressure

The patch was tested on a male subject, who wore it on the forearm, wrist, neck and foot. Tests were performed both while the subject was stationary and doing exercise

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Photo: doctormurray.com

Scientists have developed a new wearable ultrasound patch that non-invasively monitors blood pressure in arteries deep beneath the skin and could help people detect cardiovascular problems earlier on and with greater precision.

The new soft, stretchy ultrasound patch uses ultrasound waves to continuously record the diameter of a pulsing blood vessel located as deep as four centimeters (more than one inch) below the skin.

It can be worn on the skin and provides accurate, precise readings of central blood pressure each time, even while the user is moving. And it can still get a good reading through fatty tissue.

“By integrating ultrasound technology into wearables, we can start to capture a whole lot of other signals, biological events and activities going on way below the surface in a non-invasive manner,” said Sheng Xu, Professor at the University of California San Diego.

Physicians involved with the study, reported in the journal Nature Biomedical Engineering, say the technology would be useful in various inpatient procedures.

Blood Pressure
Representational image. Pixabay

“This has the potential to be a great addition to cardiovascular medicine,” said Brady Huang, co-author and radiologist at the varsity.

“In the operating room, especially in complex cardiopulmonary procedures, accurate real-time assessment of central blood pressure is needed — this is where this device has the potential to supplant traditional methods,” he noted.

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Central blood pressure is the pressure in the central blood vessels, which send blood directly from the heart to other major organs throughout the body.

Medical experts consider central blood pressure more accurate than peripheral blood pressure — measured with an inflatable cuff strapped around the upper arm, –and also say it’s better at predicting heart disease.

The patch was tested on a male subject, who wore it on the forearm, wrist, neck and foot. Tests were performed both while the subject was stationary and doing exercise. (IANS)

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A Nap During The Day Can Lower High BP: Study

Further research is needed to validate these findings, the team noted

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blood pressure
BP-monitoring machine. Pixabay

Want to lower your high blood pressure? Taking a nap during the day may help reduce hypertension levels, besides increasing your energy levels and improving mood, finds a study.

The findings showed that taking a nap during the day was associated with an average 5 mm Hg drop in blood pressure.

In addition, for every 60 minutes of mid-day sleep, 24-hour average systolic (top number) blood pressure decreased by 3 mm Hg.

“Mid-day sleep appears to lower blood pressure levels at the same magnitude as other lifestyle changes,” said Manolis Kallistratos, cardiologist at the Asklepieion General Hospital in Voula in Greece.

“These findings are important because a drop in blood pressure as small as 2 mm Hg can reduce the risk of cardiovascular events such as heart attack by up to 10 per cent,” said Kallistratos.

Blood Pressure
Mid-day nap can lower high BP. Flickr

Moreover, people who slept during the day had more favourable blood pressure numbers readings (128.7/76.2 versus 134.5/79.5 mm Hg) compared with those who did not.

“We obviously don’t want to encourage people to sleep for hours on end during the day, but on the other hand, they shouldn’t feel guilty if they can take a short nap, given the potential health benefits,” said Kallistratos.

The results will be presented at the American College of Cardiology’s 68th Annual Scientific Session in New Orleans.

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For the study, the team included 212 people aged 62 years on average with a mean blood pressure of 129.9 mm Hg.

Further research is needed to validate these findings, the team noted. (IANS)