Selfies could measure your blood pressure, scientists discover

Selfies could measure your blood pressure, scientists discover

By capitalizing on the translucent nature of facial skin, researchers were able to measure the blood pressure of 1,328 Canadian and Chinese adults by capturing two-minute videos of their faces on an iPhone. Once developed, the device will assist those who are at risk of hypertension- or hypotension-related issues to track their blood pressure.

The average prediction biases were 0.52 mm Hg for pulse pressure, 0.39 mm Hg for systolic BP, and -0.20 mm Hg for diastolic BP, the investigators found.

On average, systolic blood pressure was predicted with nearly 95% accuracy, while diastolic blood pressure and pulse pressure were at almost 96% - both within worldwide standards for existing methods.

"If future studies confirm our results and show this method can be used to measure blood pressures that are clinically high or low, we will have the option of a contactless and non-invasive method to monitor blood pressures conveniently - perhaps anytime and anywhere - for health management purposes", Dr.

The researchers make the research of the University of Toronto.

Now you do not need to go to the doctor, instead check your blood pressure via a selfie video, thanks to the imaging technology. "To manage and prevent it, regular monitoring of one's blood pressure is essential", said study lead author Kang Lee, Professor at the University of Toronto in Canada.

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'High blood pressure is a major contributor to cardiovascular disease - a leading cause of death and disability, ' said Dr Kang Lee.

"The present study shows the new method may make convenient and comfortable monitoring of blood pressure a reality", Lee told MedPage Today. He was using transdermal optical imaging to try to develop a way of telling when kids were lying by correlating blood flow to areas of the face with fibbing.

Next the team harnessed their data to create technology that could accurately measure both pulse and blood pressure based on the blood flowing under people's faces, researchers said. The prediction of diastolic pressure (the bottom number) was almost 96% accurate. The researchers want to make the system work with normal home lighting and to cut short the time needed for the recording to 30 seconds.

These findings point to the promise of obtaining BP measurement with a video camera, noted Ramakrishna Mukkamala, PhD, of Michigan State University in East Lansing, in an accompanying editorial.

"With lie detectors, it only benefits a very small group", Lee said.

Although privacy concerns would have to be addressed, "such rich information in facial video may render this video camera approach to be more promising for BP measurement than a contact measurement of the finger [photo-plethysmography] waveform", Mukkamala stated. Also, different angles of the face.

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