60/60 sign – Cardiology MCQ – Answer

Correct answer: c) Acute pulmonary embolism

60/60 sign in acute pulmonary embolism is a pattern detected by Doppler echocardiography indicating a disturbed right ventricular ejection pattern. The sign has two components – (1) Tricuspid regurgitation (TR) jet gradient of less than 60 millimeters of mercury (TR velocity less than 3.9 meters per second) and (2) Pulmonary flow acceleration time of less than 60 milliseconds. It may be noted that TR gradient should be above 30 mm Hg to indicate pulmonary hypertension due to pulmonary embolism. High TR gradients may indicate chronic thromboembolic pulmonary hypertension, especially in presence of right ventricular free wall hypertrophy suggesting long standing pulmonary hypertension. Read more…

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