Clinical outcomes following catheter-related venous thrombo-embolism among children with acute lymphoblastic leukemia

Venous thrombo-embolism (VTE) occurs in 10-15% of pediatric patients with acute lymphoblastic leukemia (ALL), yet the optimal duration of anticoagulation remains unclear. In this retrospective multi-center cohort study, we reported the clinical outcomes of pediatric patients treated for ALL with a history of central venous catheter (CVC)-related VTE and compared outcomes based on duration of anticoagulation. Patients aged 1-21 years old with newly-diagnosed ALL (2010-2023), receiving asparaginase-containing chemotherapy, experiencing a radiologically-proven CVC-related VTE requiring medical intervention, were included. Cumulative incidence and 95% confidence interval (CI) were estimated for VTE progression/recurrence and clinically relevant bleeding. Cox proportional hazard models were performed to compare clinical outcomes based on anticoagulation duration, categorized as a) asparaginase-based (following a 6-week course of anticoagulation, until the end of asparaginase' expected effects or earlier) or extended (later than asparaginase's expected effects), and b) before vs. after CVC removal. We included 106 patients (median age: 10 years, 59% male). Overall, 22 patients sustained a VTE progression/recurrence (cumulative incidence: 22%, 95% CI: 14-30%). Most progression/recurrences occurred while patients were still on anticoagulation, at a median of 54 days after index VTE. Duration of anticoagulation was not associated with VTE progression/recurrence (extended vs. asparaginase-based: HR = 1.49, 95%CI: 0.60-3.69, p = 0.392; after vs. before CVC removal: HR = 1.36, 95% CI: 0.49-3.74, p = 0.552). Clinically relevant bleeding occurred in 11/106 patients (cumulative incidence: 12%, 95% CI: 6-19%) and was not associated with anticoagulation duration. In summary, VTE progression/recurrence was common in pediatric patients with ALL. Further investigation into alternative approaches to reduce VTE progression/recurrence is warranted.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Venous thrombo-embolism (VTE) occurs in 10-15% of pediatric patients with acute lymphoblastic leukemia (ALL), yet the optimal duration of anticoagulation remains unclear.

Узнайте, как это исследование связано с клинической практикой

More peer-reviewed studies in Клинические исследования.

• Leech Therapy for Knee Osteoarthritis — The Landmark RCT — Michalsen et al. (2003)
• Leech-Assisted Flap Salvage — Systematic Review of 277 Cases — Whitaker et al. (2012)
• Effects of hirudotherapy on liver functions, lipid profile, and insulin sensitivity in rats with metabolic syndrome — Bilden A et al. (2026)
• HIRUDOTHERAPY IN PRESBYACUZIS PRAECOX IN CLEAN-UP WORKERS AFTER THE CHORNOBYL ACCIDENT DURING THE POST-CATASTROPHE YEARS — Zabolotnyi D, Mishchanchuk N (2019)
• Wound healing potential of bark paste of Pongamia pinnata along with hirudotherapy: A case report — Balasooriya D, Karunarathna C, Uluwaduge I (2021)
• AIF-1 and RNASET2 Play Complementary Roles in the Innate Immune Response of Medicinal Leech — Baranzini N et al. (2019)
• Study on the effect of medicinal leech therapy (Hirudo medicinalis) on full-thickness excisional wound healing in the animal model — Zakian A et al. (2022)
• [Hirudo medicinalis-leech applications in plastic and reconstructive microsurgery--a literature review] — Knobloch K et al. (2007)
• The duration of rest and feeding greatly affects the re-breeding of ectoparasites: Hirudo verbana, Hirudo medicinalis and Hirudo orientalis — Aminov R, Frolov A, Aminova A (2022)
• Recombinant hirudin in clinical practice: focus on lepirudin — Greinacher A, Lubenow N (2001)

Browse all ASH-analysed research →