Abstract
Background
Recent studies have demonstrated non-inferiority of rivaroxaban when compared to warfarin for the treatment of pulmonary embolism and deep venous thrombosis. Analysis of data from the EINSTEIN trials has demonstrated that patients who received rivaroxaban had a shorter length of stay (LOS) compared to those who received warfarin. However, these trials had strict inclusion and exclusion criteria, and were designed for a different primary outcome. Also, data from these closely monitored clinical trials may not reflect the daily practice of medicine.
Objectives
To clarify this issue further, we performed a retrospective analysis at our institution, comparing the LOS between patients discharged on rivaroxaban and other conventional anticoagulants (warfarin, enoxaparin, and enoxaparin with warfarin).
Methods
This was a retrospective study of consecutive patients admitted to our institution from January 2011 to July 2014 with newly diagnosed venous thromboembolism (VTE). Inclusion criteria were age > 18 years and objective confirmation of VTE. Exclusion criteria included diagnosis of VTE 24 h after admission, contraindication to anticoagulation, treatment with fibrinolytic agents, patients already on anticoagulation, and pregnancy. Out of 1553 consecutive patients diagnosed with VTE, a total of 414 patients met the eligibility criteria. These patients were further subdivided into four groups based on their discharge anticoagulant: rivaroxaban, warfarin, enoxaparin, and warfarin with enoxaparin.
Results
Patients discharged on rivaroxaban had a significantly shorter LOS compared with patients discharged on warfarin (3.5 vs. 7.0 days; p < 0.001), but not when compared to those discharged on enoxaparin alone (3.0 days) or enoxaparin with warfarin (4.0 days) (p > 0.05). The hospital incidence of bleeding and the 6-month readmission rates were not different among the different anticoagulants.
Conclusions
In patients admitted with newly diagnosed VTE, those discharged on rivaroxaban had a significantly shorter LOS compared to those discharged on warfarin. In the appropriate subset of patients with VTE, treatment with rivaroxaban may result in significant cost savings for the hospital.
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References
Oger E (2000) Incidence of venous thromboembolism: a community-based study in western France. Thromb Haemost 83:657–660
Spencer FA, Emery C, Lessard D et al (2006) The Worcester venous thromboembolism study: a population-based study of the clinical epidemiology of venous thromboembolism. J Gen Intern Med 21:722–727
Heit JA, Cohen AT, Anderson FA Jr (2005) Estimated annual number of incident and recurrent, non-fatal and fatal venous thromboembolism (VTE) events in the US. Blood 106:910
Goldhaber SZ, Visani L, De Rosa M (1999) Acute pulmonary embolism: clinical outcomes in the International Cooperative Pulmonary Embolism Registry (ICOPER). Lancet 353(9162):1386–1389
Prandoni P, Lensing AW, Büller HR et al (1992) Comparison of subcutaneous low-molecular-weight heparin with intravenous standard heparin in proximal deep-vein thrombosis. Lancet 339(8791):441–445
The Columbus Investigators (1997) Low-molecular-weight heparin in the treatment of patients with venous thromboembolism. N Engl J Med 337(10):657–662
Schulman S, Kearon C, Kakkar AK et al (2009) Dabigatran versus warfarin in the treatment of acute venous thromboembolism. N Engl J Med 361(24):2342–2352
EINSTEIN–PE Investigators, Büller HR, Prins MH, Lensin AW et al (2012) Oral rivaroxaban for the treatment of symptomatic pulmonary embolism. N Engl J Med 366(14):1287–1297
EINSTEIN Investigators, Bauersachs R, Berkowitz SD, Brenner B et al (2010) Oral rivaroxaban for symptomatic venous thromboembolism. N Engl J Med 363(26):2499–2510
AMPLIFY Investigators, Agnelli G, Buller HR, Cohen A et al (2013) Oral apixaban for the treatment of acute venous thromboembolism. N Engl J Med 369(9):799–808
Bookhart BK, Haskell L, Bamber L et al (2014) Length of stay and economic consequences with rivaroxaban vs enoxaparin/vitamin K antagonist in patients with DVT and PE: findings from the north American EINSTEIN clinical trial program. J Med Econ 17(10):691–695
Van Bellen B, Bamber L, Correa de Carvalho F et al (2014 May) Reduction in the length of stay with rivaroxaban as a single-drug regimen for the treatment of deep vein thrombosis and pulmonary embolism. Curr Med Res Opin 30(5):829–837
Hospital adjusted expenses per inpatient day (2013) The Henry J. Kaiser Family Foundation
Schulman S, Anderson DR, Bungard TJ et al (2010) Direct and indirect costs of management of long-term warfarin therapy in Canada. J Thromb Haemost 8:2192–2200
Catherine JM, Ciarametaro M, Hahn B et al (2011) Cost efficiency of anticoagulation with warfarin to prevent stroke in medicare beneficiaries with nonvalvular atrial fibrillation. Stroke 42:112–118
Bamber L, Wang MY, Prins MH et al (2013) Patient-reported treatment satisfaction with oral rivaroxaban versus standard therapy in the treatment of acute symptomatic deep-vein thrombosis. Thromb Haemost 110(4):732–741
Lin J, Lingohr-Smith M, Kwong WJ (2014 Feb) Incremental health care resource utilization and economic burden of venous thromboembolism recurrence from a US payer perspective. J Manag Care Pharm 20(2):174–186
Guyatt GH, Akl EA, Crowther M et al (2012) Antithrombotic therapy and prevention of thrombosis: American College of Chest Physicians evidence-based clinical practice guidelines. Chest 141(2_Suppl):7S–47S
Specifications manual for national hospital inpatient quality measures discharges 01-01-15 (1Q15) through 09-30-15 (3Q15). Version 4.4
Eerenberg ES, Kamphuisen PW, Sijpkens MK et al (2011 Oct 4) Reversal of rivaroxaban and dabigatran by prothrombin complex concentrate: a randomized, placebo-controlled, crossover study in healthy subjects. Circulation 124(14):1573–1579
Marlu R, Hodaj E, Paris A et al (2012 Aug) Effect of non-specific reversal agents on anticoagulant activity of dabigatran and rivaroxaban: a randomised crossover ex vivo study in healthy volunteers. Thromb Haemost 108(2):217–224
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All the authors contributed equally towards the design of the study, performance of the study, analysis of the data, and writing the manuscript.
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Desai, A., Desai, A., Calixte, R. et al. Comparing Length of Stay Between Patients Taking Rivaroxaban and Conventional Anticoagulants for Treatment of Venous Thromboembolism. Lung 194, 605–611 (2016). https://doi.org/10.1007/s00408-016-9898-8
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DOI: https://doi.org/10.1007/s00408-016-9898-8