In 1974, the public got a graphic illustration of the “trage…

In 1974, the public got a graphic illustration of the “tragedy of the commons” in satellite photos of the earth. Pictures of northern Africa showed an irregular dark patch 390 square miles in area. Ground-level investigation revealed a fenced area inside of which there was plenty of grass. Outside, the ground cover was devastated by overgrazing. Consider the two dimensions of product characteristics: i) rival versus non-rival and ii) excludable versus non-excludable. Which dimension would explain the difference in results for the fenced area and the non-fenced (common) area? Be sure to explain why.

A patient is admitted to the hospital with hypoxia. Their pr…

A patient is admitted to the hospital with hypoxia. Their prior medical history includes COPD, emphysema, CVA (stroke) and history of aspiration. Examination reveals coarse inspiratory crackles and diminished breath sounds throughout the region of the right middle and lower lobes. The patient reports an acute worsening of their chronic cough, now productive with dark tan and thick mucus. You note they additionally have a fever of 101.8 F. Which of the following is the most likely acute condition driving this patient’s presentation? 

A patient with a prior history of heart failure has been adm…

A patient with a prior history of heart failure has been admitted to the hospital for 6 days in the setting of volume overload and pulmonary edema.  The patient has undergone significant fluid volume removal (diuresis) via furosemide (Lasix). Pulmonary edema has been resolved, but medical notes now suggest the patient may have had too much fluid volume removed. The patient became tachycardic, hypotensive and was noted to have a decreased respiratory rate. A blood gas was drawn, results shown below. Select the correct assessment of the the blood gas:  pH: 7.50 PCO2: 48 PO2: 80 HCO3: 38 FiO2: 21%  P/F Ratio: 380