BRIDGETON, New Jersey (WPVI) -- A small device is having a big impact on the quality of life for some emphysema patients. We learn how these tiny one-way valves got a local woman back on her feet.
“The purpose of masks is to keep respiratory droplets from reaching others to aid with source control. Masks with one-way valves or vents allow exhaled air to be expelled out through holes in the ...
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