A young adult male takes advantage of the free clinic to discuss recurring symptoms with a doctor. He explains that although he feels well at the moment, he sometimes hears some sound upon exhalation, and also can experience slight chest tightness and shortness of breath on occasion. The patient states that breathing symptoms come and go but tend to worsen seasonally. Standard spirometry tests are taken before and after inhalation of an ẞ-adrenergic receptor agonist. Which of the following would be consistent with the diagnosis of asthma?

A 65-year-old woman is diagnosed who "angina pectoris”. What causes this condition?

A young adult male takes advantage of the free clinic to discuss recurring symptoms with a doctor. He explains that although he feels well at the moment, he sometimes hears some sound upon exhalation, and also can experience slight chest tightness and shortness of breath on occasion. The patient states that breathing symptoms come and go but tend to worsen seasonally. Standard spirometry tests are taken before and after inhalation of an ẞ-adrenergic receptor agonist. Which of the following would be consistent with the diagnosis of asthma?

A 55-year-old man with polycystic kidney disease dies in renal failure (uremia). A shaggy exudate on the surface of this heart is observed at autopsy (shown). This inflammatory exudate contains large amounts of which of the following plasma-derived proteins?

A 72-year-old woman is admitted with sudden hypotension, chest pain, and syncope five days after an anterior ST-elevation myocardial infarction treated medically. She rapidly deteriorates and develops signs of cardiogenic shock. The provider suspects free-wall myocardial rupture. Which of the following best explains the pathophysiologic mechanism responsible for this complication?

A 22-year-old construction worker falls 30 feet and fractures several bones, including his left femoral shaft. Six hours later, the patient develops shortness of breath and cyanosis. Which of the following hemodynamic disorders best explains the pathogenesis of respiratory distress in this patient?

A sputum sample obtained from a 68-year-old former construction worker reveals needle-like inert minerals (shown). This patient is at increased risk of developing which of the following malignant neoplasms?

A 62-year-old woman suffers internal Injuries in an automobile accident and appears to be in a state of shock. Two days later, the patient develops rapidly progressive respiratory distress and a pattern of “’interstitial pneumonia” on chest x-ray (shock lung). Which of the following pathologic findings could be expected in the lungs of this patient with diffuse alveolar carriage?

A 59-year-old man with a history of poor dentition presents with fever, new-onset heart murmur, and positive blood cultures for Streptococcus species. The provider suspects infective endocarditis involving a native heart valve. Which pathophysiologic characteristic of cardiac valves most explains why bacteria are able to adhere and proliferate in this location?

Which of the following pathologic findings is best described as a collection of platelets, fibrin, and entrapped cellular elements that is attached to the luminal surface of an artery or vein?

A 36-year-old man with AIDS presents with fever, dry cough, and dyspnea. A chest x-ray shows bilateral and diffuse infiltrates. Laboratory studies reveal a low CD4+ cell count. A lung biopsy discloses a chronic interstitial pneumonitis and an intra-alveolar foamy exudate. A silver stain of a bronchoalveolar lavage is shown. Which of the following organisms is the most likely responsible for these pulmonary findings?