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Updated: Aug 11, 2026

Prehospital Thrombolysis: A Manual from Berlin
Published on: November 26, 2013
Successful thrombolysis by prolonged low-dose alteplase in catheter-directed infusion
E Ruud1, H Holmstrøm, I Aagenaes
1Departments of Paediatrics, The National Hospital, Oslo, Norway. ellen.ruud@rikshospitalet.no
Insights
Catheter-directed thrombolysis effectively treated thromboembolism in two children using low-dose alteplase. This method enhanced local clot breakdown with minimal systemic effects, showing promise for pediatric patients.
Area of Science:
- Pediatric Cardiology
- Interventional Radiology
- Hematology
Background:
- Thromboembolism poses significant risks in pediatric patients.
- Systemic thrombolysis can lead to adverse effects.
- Catheter-directed thrombolysis offers a localized treatment approach.
Observation:
- Two pediatric cases of thromboembolism were treated with catheter-directed thrombolysis.
- A boy with Fontan physiology received treatment for pulmonary thromboembolism.
- A patient with nephrotic syndrome was treated for arterial leg thrombosis.
Findings:
- Successful thrombolysis was achieved in both pediatric patients.
- Prolonged, continuous, low-dose alteplase via catheter was administered.
- The treatment resulted in enhanced local thrombolysis and reduced systemic bleeding.
- Very low-dose alteplase was used for five days in the first case.
- Low-dose alteplase was used for four days in the second case.
Implications:
- Catheter-directed thrombolysis is a viable option for pediatric thromboembolism.
- Further research is needed to establish evidence-based guidelines for pediatric use.
- Specific recommendations for dosage, duration, and anticoagulation are lacking.
Unlabelled:
Catheter-directed thrombolysis is a sophisticated method in the treatment of thromboembolism with maximum effect on the thrombus and minimal systemic effect. The consequences are enhanced local thrombolysis and a reduction in general bleeding tendency, compared with systemic thrombolysis. At our institution, two children had successful thrombolysis by prolonged continuous catheter-directed low-dose alteplase. The first patient, a boy with Fontan physiology, was successfully treated for a massive pulmonary thromboembolism by catheter-directed very low-dose alteplase for five days. The second patient, who suffered from relapsing nephrotic syndrome, achieved satisfactory thrombolysis of an arterial leg thrombosis after four days of continuous catheter-directed low-dose alteplase.
Conclusion:
Although catheter-directed thrombolysis seems to be a valuable method in thrombolytic therapy, there is a lack of evidence-based recommendations concerning dosage, effect of bolus, simultaneous anticoagulation and duration of treatment for children.
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