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A patient with severe upper airway obstruction is receiving an 80/20 heliox mixture via a non-rebreather mask. The oxygen flowmeter is set at 12 L/min. What is the actual total flow delivered to the patient?

Cholera is a severe waterborne disease caused by Vibrio cholerae. The terms endemic, epidemic, and pandemic could all be applied to cholera transmission, depending on the population of interest. 

Examine the graphs below and their data trends.  Data show child hospitalizations and ambient air temperature in Lima Peru, 1993-1998. All of responses below represent a relationship that can be discerned from the graphs below except: ___________________. [Select the best response]  

 Vulnerable populations tend to bear a disproportionate burden from environmental pollution, contamination, and other adverse environmental conditions. 

A patient requiring ongoing nasotracheal suctioning begins to have mild epistaxis. Which recommendation is most appropriate?

The 1948 air pollution crisis in Donora, PA was most closely associated with: __________________?[Select the best response]

What is normal urine output for a 70kg male?

A patient walks in the ER complaining of chest pain. What should be done to R/O for myocardial infarction?   I. Obtain CPK level II. Recommend EKG III. Obtain troponin level IV. Check the BUN

An odds ratio for children in Community X to develop leukemia is 1.7, relative to data from matched children from Community Z. This odds ratio indicates that: _________________. [Select the best response.]

Which ventilatory strategy is most appropriate for a patient with severe hypoxemia secondary to acute lung injury or ARDS?