A 65-year-old female with a history of severe COPD and coronary artery disease is intubated for severe acute respiratory distress syndrome (ARDS) in the setting of pneumonia. Despite ventilation with 6 mL/kg tidal volumes and neuromuscular blockade, PaO2:FiO2 remains 85 on FiO2 100%. PEEP is increased from 5 to 10 cm H2O, and mean arterial pressure subsequently decreases from 65 to 45. In what setting is increased PEEP least likely to improve oxygenation and hemodynamics?

What do free radicals do?

Ancient Egypt is one of the only ancient religions not to have a flood story. 

5. What is the recommended daily intake of carbohydrates for brain function in adults?  

Which of the following is the proposed mechanism of action causing beneficial effects of the aldosterone-receptor blocker spironolactone in patients with heart failure?

Mr. Kalish, a long-time government employee, falsely believed that his supervisor was a communist agent who was putting poison in the employees’ coffee. When Mr. Kalish was referred to a psychologist, he complained that he heard voices in his head which told him about the poison in the coffee. Mr. Kalish is most likely suffering from:

The mean velocity for the  ACA is   _______ . The mean velocity for the basilar artery is _______ .

A 56-year-old male with advanced idiopathic pulmonary fibrosis presents to the ICU in respiratory distress. He is put on high flow nasal cannula with 50 L flow, 80% FiO2. ABG obtained has a pH significant for 7.32, PaO2 of 80 mm Hg, PaCO2 of 20 mm Hg, HCO3 of 30. Given his underlying disease, what is the primary physiological aberration leading to the patient’s hypoxemia?

1. Which of the following nutrients provides the most energy per gram?

A 70-year-old female is intubated in the ICU for respiratory failure following an episode of aspiration with resulting pneumonitis. Which of the following practices is most likely to decrease her duration of mechanical ventilation?