The central pulmonary arteries and any thrombus within them can be imaged by transoesophageal echocardiography. Its use is reported in the diagnosis and subsequent management of a patient with acute pulmonary embolism, whose response to thrombolytic treatment was monitored by further transoesophageal studies. Transoesophageal echocardiography may be a valuable primary diagnostic procedure in patients who seem to have sustained a significant pulmonary embolus and require urgent intervention.
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Rittoo et al. (1993) studied this question.