Mechanical Thrombectomy for Acute Pulmonary Embolism

Catheter-based thrombectomy is performed within 4 hours after baseline CTPA acquisition. Pre-procedural anticoagulation with either low-molecular-weight heparin (LMWH) or unfractionated heparin (UFH) is administered prior to thrombectomy. Post-procedural oral anticoagulation is transitioned to rivaroxaban 20 mg once daily (QD).

Following thrombolytic agent administration, anticoagulation with rivaroxaban is initiated and maintained at 15 mg twice daily (BID) for the initial 3 weeks, then switched to 20 mg once daily (QD) thereafter.