From a recent update:
Purpose of review: Although early pulmonary revascularization is the treatment of choice for patients with high-risk (massive) pulmonary embolism, it remains controversial in patients with intermediate-risk (submassive) pulmonary embolism until recently. Recent published data on the management of high-risk and intermediate-risk pulmonary embolism patients will be the main focus of this review.
Recent findings: The PEITHO trial supports the rationale of risk stratification in normotensive patients with pulmonary embolism. Patients with right ventricular dilation on echocardiography and positive cardiac troponin test have a high intermediate risk of complication and death. Thrombolysis prevents hemodynamic collapse in these patients but with an increased risk of major bleeding particularly in older patients (>75 years). Reduced dose of thrombolysis and catheter-based reperfusion with or without fibrinolysis have shown promising results.