Thrombophilia natural history, complications and prognosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Asiri Ediriwickrema, M.D., M.H.S. [2]

Overview

Natural History

  • Refer to the clinical symptoms section regarding early clinical features of patients with thrombophilia.
  • Annual thrombotic risks are variable and depend on the underlying thrombophilia[1].
  • If left untreated, the annual incidence of incident thrombosis in asymptomatic patients with factor V leidin and prothrombin G20210A (<0.02%) is low[2]. The risk is approximately equivalent to treatment with oral contraceptives (OCPs). Whereas the annual incidence of significant bleeds is approximately 2-3%[3].
  • Studies performed by Christiansen et al and Baglin et al did revealed that inherited thrombophilia did not predict for recurrent thrombosis[4][5].
  • OCPs, hormone replacement therapy, and pregnancy can significantly increase thrombotic risk in patients with thrombophilia[6].
  • Certain high risk thrombophilias require indefinate anticoagulation.

Complications

Thrombophilic state Thrombotic risk[2]
Trauma/General surgery Modest
Age > 60 Modest
Immobilization Modest
Pregnancy Modest
Hormone therapies Modest
Factor V Leiden heterozygosity Modest
Prothrombin mutation Modest
Homocysteinemia Modest
Increased factor VIII levels Modest
Increased factor IX levels Modest
Increased factor XI levels Modest
Protein C and S deficiency Intermediate
Dysfibrogenemia Intermediate
Malignancy High
APLS/Lupus anticoagulant High
Myeloproliferative disorders/hyperviscosity High
PNH High
Orthopedic surgery High
Antithrombin deficiency High
Factor V Leiden homozygosity High

Prognosis

  • Certain thrombophilic conditions are high risk and require consideration for lifelong anticoagulation. Expert consultation is recommended.
Possible indications for lifelong/prophylactic anticoagulation
Antiphospholipid syndrome
Paroxysmal nocturnal hemoglobinuria
Recurrent thrombosis regardless of underlying thrombophilia
History of life-threatening thrombosis or atypical locations
Malignancy with history of thrombosis

References

  1. Bauer KA (2001). "The thrombophilias: well-defined risk factors with uncertain therapeutic implications". Ann Intern Med. 135 (5): 367–73. PMID 11529700.
  2. 2.0 2.1 Bates SM, Ginsberg JS (2004). "Clinical practice. Treatment of deep-vein thrombosis". N Engl J Med. 351 (3): 268–77. doi:10.1056/NEJMcp031676. PMID 15254285.
  3. Linkins LA, Choi PT, Douketis JD (2003). "Clinical impact of bleeding in patients taking oral anticoagulant therapy for venous thromboembolism: a meta-analysis". Ann Intern Med. 139 (11): 893–900. PMID 14644891.
  4. Christiansen SC, Cannegieter SC, Koster T, Vandenbroucke JP, Rosendaal FR (2005). "Thrombophilia, clinical factors, and recurrent venous thrombotic events". JAMA. 293 (19): 2352–61. doi:10.1001/jama.293.19.2352. PMID 15900005. Review in: Evid Based Med. 2006 Apr;11(2):59
  5. Baglin T, Luddington R, Brown K, Baglin C (2003). "Incidence of recurrent venous thromboembolism in relation to clinical and thrombophilic risk factors: prospective cohort study". Lancet. 362 (9383): 523–6. doi:10.1016/S0140-6736(03)14111-6. PMID 12932383.
  6. Dalen JE (2008). "Should patients with venous thromboembolism be screened for thrombophilia?". Am J Med. 121 (6): 458–63. doi:10.1016/j.amjmed.2007.10.042. PMID 18501222.

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