Respiratory Medicine MCQ for NEET PG & FMGE

← Respiratory Medicine

A 65-year-old male, 1 week after intestinal obstruction surgery, suddenly developed chest pain and dyspnea after defecation. Physical exam: heart rate 130/min, P2>A2. Blood gas analysis shows PaO2 decreased from 98mmHg to 70mmHg, PaCO2 30mmHg. Echocardiogram shows pulmonary hypertension. The most likely diagnosis is:

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