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.
Pulmonary function testing identified COPD in 437 of the 1,140 men. The researchers then used logistic regression to identify factors that could result in a FEV 1 /FVC ratio below 70%, and used these in their model: 1  Emphysema on CT, OR 2.47 (95% CI 2.09 to 2.92, P. 2  Air trapping on CT, OR 1.16 (95% CI 1.13 to 1.20, P.