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Researchers at IIT Madras have discovered that low respiratory rates can help viral aerosols travel deep into the lungs.

Researchers at IIT Madras have discovered that low respiratory rates can help viral aerosols travel deep into the lungs.

 


The findings were published in the international peer-reviewed journal Physics of Fluids.

Researchers at the Indian Institute of Technology Madras have found that lower breathing rates increase the likelihood that viral droplets will be transported deep into the lungs.

A team of researchers modeled breathing frequency in the lab and found that in people with low breathing frequency, the virus lived longer and increased the likelihood of infection-causing deposits. In addition, the multi-scale lung structure has a great influence on human susceptibility to COVID-19.

The study was led by Mahesh Panchagnula of the Applied Mechanics Division and his researchers Arnab Kumar Mallik and Soumalya Mukherjee, and the results were published in an international peer-reviewed journal. Fluid physics..

Panchagnula said: This study shows the physical process by which aerosol particles are transported to deeper generations of the lungs. “

In their study, the team reported that holding your breath and lowering your breathing rate could increase your chances of getting the virus in your lungs. This study was conducted to pave the way for better treatments and drugs for respiratory infections. In a previous study, the team emphasized the large variability in aerosol uptake among individuals and suggested why some people are susceptible to airborne infections.

The research team mimicked the dynamics of lung droplets by studying the movement of droplets within small capillaries, 0.3-2 mm in diameter, similar to bronchioles. They took water mixed with fluorescent particles and used a nebulizer to produce an aerosol from the liquid. Fluorescent aerosols have been used to track the movement and deposition of particles within capillaries.

The team will continue this work to understand how the virus-laden droplets are transported to the lungs. The process by which the virus is transported from the nasal passages to the deep lungs is still unknown. Understanding the physics of this phenomenon can be important in mitigating the progression of the disease, the team says.

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