Cardiovascular & Respiratory Pathology · NEET PG Preparation Pathology
A 28-year-old pregnant woman in her third trimester presents with acute onset shortness of breath and pleuritic chest pain. She undergoes a ventilati…
Practice question from Cardiovascular & Respiratory Pathology (NEET PG Preparation Pathology), with the correct answer and a step-by-step solution.
hard · MCQ · Q-491D55
A 28-year-old pregnant woman in her third trimester presents with acute onset shortness of breath and pleuritic chest pain. She undergoes a ventilation-perfusion scan and CT pulmonary angiography, which confirms a massive pulmonary embolism. Which of the following hemodynamic and structural consequences is most characteristic of acute massive pulmonary embolism?
- A.Left ventricular pressure overload and eccentric hypertrophy
- B.Right ventricular pressure overload and acute cor pulmonaleCorrect answer
- C.Left atrial volume overload and concentric hypertrophy
- D.Decreased pulmonary vascular resistance with increased cardiac output
Solution
A massive pulmonary thromboembolism obstructs a major portion of the pulmonary vascular bed, abruptly increasing pulmonary vascular resistance. This leads to acute right ventricular pressure overload, dilation, and acute cor pulmonale.
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