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.
| This topic last updated: Mar 20, 2017. 1  INTRODUCTION â Chronic obstructive pulmonary disease (COPD) is a common respiratory condition characterized by airflow limitation [1,2]. It affects more than 5 percent of the population and is associated with high morbidity and mortality [3].