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Selfie videos for monitoring blood pressure are useful

Monitoring of blood pressure by cell phone?

Many people make short videos and so-called selfies, for example, to focus on their daily run on social media. Research has shown that selfie videos can also be used for effective monitoring of blood pressure.

The current University of Toronto investigation found that it is possible to use short selfie videos for monitoring blood pressure. The results of the study were published in the English-language journal "Circulation: Cardiovascular Imaging".

 Physician measures blood pressure
The measurement of blood pressure could in the future be significantly easier and more comfortable. Researchers have developed a method with which blood pressure can easily be measured over a mobile phone. (Image: stokkete / fotolia.com)

Cell phone equipped with special imaging software

With the aid of a cell phone camera equipped with a special imaging software, the researchers were able to detect the blood flow pattern of 1,328 persons. By doing so, they signal subtle changes in the environmental light, while they draw down on the skin. Compared to other techniques for measuring blood pressure, the use of a cell phone is associated with substantially lower costs.

Who was the accuracy of the method? Percent predicted, while the accuracy of diastolic blood pressure and pulse pressure was at almost 96 percent, the research team reports. All participants in the study had normal blood pressure. The film material is captured in a controlled environment with fixed lighting and it is unclear as to how the technology is currently functioning in other environments. Nevertheless, the results see a more important breakthrough, the researchers explain.

Further research is needed

If future studies confirm the findings and say that this method can be used to control a high or low blood pressure, Option of a contactless and non-invasive method for convenient monitoring of blood pressure. Such a review of blood pressure could be done anytime and anywhere. The researchers hope to be able to test your technology further, by examining more people with extremely dark or light skin tones by this method. Besides, they can reduce the required video length by two minutes to 30 seconds. According to the British Heart Foundation, a successful introduction of the method alone in the United Kingdom could have more than 14 million people with a high blood pressure have significant effects. Estimates more than one-third of these cases are not diagnosed.

Results could improve treatment of hypertension

This innovative study is an excellent example of how data from mobile technology with modern methods of machine learning were utilized, the potential to improve cardiovascular care. Further research can confirm that the new hiring of people with severely different skin tones, differing blood pressure values ​​and functioning in normal living environments could help in the diagnosis and treatment of hypertension and facilitate the monitoring and treatment. (as)


  • Hong Luo, Deye Yang, Andrew Barszczyk, Naresh Vempala, Jing Wei et al .: Smartphone-Based Blood Pressure Measurement Using Transdermal Optical Imaging Technology, in Circulation: Cardiovascular Imaging (Inquiry: 08.08.2019), Circulation: Cardiovascular Imaging

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