10. Ask for a Package Deal. Try renting all the tuxedos needed for your wedding together to see if you can get a discount for multiple rentals. Ask if there are wedding packages for renting the groomâs, the groomsmenâs, and the fathersâ tuxedos.
A Venturi mask can deliver oxygen concentrations from 24% to 60% with flow rates from 4 to 12 L/min. Because this device delivers a precise oxygen concentration and carbon dioxide buildup is minimal, it is commonly used for patients who have COPD. Humidification is usually unnecessary with this device.
Lung function tests measure how much air you can breathe in and out, how fast you can breathe air out, and how well your lungs deliver oxygen to your blood. The main test for COPD is spirometry (spi-ROM-eh-tre). Other lung function tests, such as a lung diffusion capacity test, also might be used.