Management of Recurrent Pulmonary Embolism After Stopping Apixaban
For patients with recurrent pulmonary embolism (PE) shortly after stopping apixaban, indefinite oral anticoagulant treatment is strongly recommended, as recurrent VTE not related to a major transient risk factor requires lifelong anticoagulation. 1
Immediate Management
- Immediately assess for hemodynamic instability to identify high-risk patients who may require urgent reperfusion therapy 2
- Perform bedside transthoracic echocardiography to differentiate suspected high-risk PE from other acute life-threatening situations 2
- Restart anticoagulation immediately while diagnostic workup is ongoing, unless bleeding contraindications exist 2
Risk Stratification
- Classify the patient according to hemodynamic stability to identify risk of early mortality 3
- For hemodynamically unstable patients (high-risk PE):
- Consider systemic thrombolytic therapy as first-line treatment 2
- For hemodynamically stable patients (intermediate/low-risk PE):
- Reinstitute anticoagulation immediately 2
Anticoagulation Approach
- Direct oral anticoagulants (DOACs) are preferred over vitamin K antagonists (VKAs) for treatment of recurrent PE 2, 1
- When restarting apixaban after temporary discontinuation:
Duration of Treatment
- Indefinite oral anticoagulant treatment is strongly recommended (Class I, Level B recommendation) for patients with recurrent VTE not related to a major transient risk factor 1
- If extended anticoagulation is decided after PE, a reduced dose of apixaban (2.5 mg twice daily) should be considered after 6 months of therapeutic anticoagulation (Class IIa, Level A recommendation) 1
Special Considerations
- Consider inferior vena cava filter placement if recurrent PE occurs despite therapeutic anticoagulation 2, 3
- Evaluate for potential causes of anticoagulation failure:
- Medication non-adherence
- Drug interactions
- Underlying malignancy
- Antiphospholipid syndrome 1
Follow-up and Monitoring
- Regularly assess medication adherence, drug tolerance, renal/hepatic function, and bleeding risk 1
- Monitor for signs of chronic thromboembolic pulmonary hypertension (CTEPH), a potential complication of recurrent PE 5
- Patients with recurrent VTE have a substantial risk for additional recurrence after discontinuation of anticoagulation, regardless of treatment duration 6
Important Pitfalls to Avoid
- Do not delay anticoagulation while awaiting confirmatory diagnostic tests unless absolute contraindications exist 2
- Avoid DOACs in patients with severe renal impairment, during pregnancy/lactation, or in those with antiphospholipid syndrome 3
- Do not use aspirin as an alternative to anticoagulation for recurrent PE, as it is significantly less effective than anticoagulants 1
- Do not routinely use inferior vena cava filters except in cases of contraindication to anticoagulation or recurrent PE despite therapeutic anticoagulation 3