A 62-year-old woman with a history of deep vein thrombosis s…
A 62-year-old woman with a history of deep vein thrombosis suddenly develops sharp chest pain, dyspnea, and hemoptysis (coughing up blood) . Her oxygen saturation drops to 87% on room air. A CT angiogram reveals a pulmonary embolism in the right lower lobe.Which of the following best explains the impaired gas exchange in this patient? One option only
Read DetailsA 66-year-old male with a history of chronic smoking present…
A 66-year-old male with a history of chronic smoking presents with a persistent productive cough and dyspnea. Physical exam reveals wheezing and signs of respiratory distress. Pulmonary function tests show an obstructive pattern.Which of the following pathophysiologic mechanisms contribute to airflow obstruction in this patient? 4 options, partial credit is available
Read DetailsA 42-year-old woman undergoes excision of a breast mass. Pat…
A 42-year-old woman undergoes excision of a breast mass. Pathology reveals a well-circumscribed, encapsulated lesion composed of uniform ductal epithelial cells with low mitotic activity.Which of the following statements are true regarding it ? 3 options, no partial credit
Read DetailsA 50-year-old woman presents after several days of severe vo…
A 50-year-old woman presents after several days of severe vomiting. She complains of dizziness and weakness. ABG results:pH: 7.51PaCO₂: 46 mmHgHCO₃⁻: 33 mEq/LNormal PCO2 = 35-45Normal HCO3– = 22-26What is the likely diagnosis? 4 options, no partial credit
Read DetailsA 27-year-old male presents with a painful, swollen mass nea…
A 27-year-old male presents with a painful, swollen mass near his jawline and fever. On exam, the area is fluctuant and erythematous. A dental abscess is diagnosed. Which of the following is the most likely underlying mechanism for abscess formation? one answer
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