A 60 yo man with bacterial endocarditis develops acute onset shortness of breath and hypoxemia. A chest x-ray is shown. Which of the following is the most likely diagnosis? 

What is the physiological dead space (anatomical plus alveolar) in a patient with a tidal volume of 500 mL, a PACO2 of 60 mmHg and an expired PCO2 of 30 mmHg (mls)?

A 35 year old female who recently returned from a trip to Asia presets with a fever of 39˚C, chills, headache, rigors and has difficulty breathing. Given her travel history (there has recently been an outbreak of SARS in Asia), you take sputum and feces samples and send them off to the lab for testing. Your differential diagnosis includes influenza and SARS. For which of the following viruses that can cause respiratory illness could you expect to find infectious virus excreted in feces?

Vital capacity is the sum of inspiratory reserve volume (IRV) + expiratory reserve volume (ERV) + _______.

Which of the following tests is NOT useful in the diagnostic assessment of respiratory fungal pathogen?

Which of the following drugs cannot be administered effectively by inhalation?

A 17 yo girl is killed in a car accident. She had a history of asthma since she was 4 yo, requiring multiple medication treatments and chronic use of an inhaler. Which of the following is most likely to be found in her lungs at autopsy?

The most common histology seen in non-smokers with lung cancer is

What is the total oxygen content of the blood when PaO2 = 100 mm Hg, Hb saturation = 98%, the carrying capacity of Hb is 1.34 ml of O2 per gram of Hb, and Hb concentration = 20 grams/dL? Assume a normal Hb-O2 dissociation curve and a solubility for O2 in the blood of 0.003 ml O2/(100 ml of blood/mmHg).

What two embryological tissues interact to yield the branching pattern of airway morphogensis in the lungs?