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An incentive spirometer is a handheld medical device used to help patients improve the functioning of their lungs. By training patients to take slow and deep breaths, this simplified spirometer facilitates lung expansion and strengthening. Patients inhale through a mouthpiece, which causes a piston inside the device to rise.
1859 E. Smith developed a portable spirometer, which he used to measure gas metabolism. 1866 Henry Hyde Salter (1823-1871) added a kymograph to the spirometer in order to record time while obtaining air volumes. 1879 Gad J. published a paper entitled "Pneumatograph" that described a machine that allowed the recording of lung volume changes.
Spirometry (meaning the measuring of breath) is the most common of the pulmonary function tests (PFTs). It measures lung function, specifically the amount (volume) and/or speed (flow) of air that can be inhaled and exhaled.
Walgreens generated $1.1 billion in free cash flow in the quarter and $23 million for fiscal 2024. It ended its fiscal year with $9.5 billion in debt and $3.1 million in cash and marketable ...
3 Things You Need to Know if You Buy Walgreens Boots Alliance Stock Today. Alex Carchidi, The Motley Fool. July 14, 2024 at 2:05 PM.
Elon Musk said he is feeding USAID thorugh the wood chipper. The federal agency provides disaster relief across the world and promotes democracy.
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