Supervised patient self-testing of warfarin therapy using an online system

Journal of Medical Internet Research

Volumn 15, Issue 7, 2013, Pages

  Bereznicki, Luke Ryan Elliot ^a   Jackson, Shane Leigh ^a   Peterson, Gregory Mark ^a  

^a UNIVERSITY OF TASMANIA   (Australia)

Author keywords

Communication; International normalized ratio; Internet; Management; Self care; Warfarin

Indexed keywords

ANTICOAGULANT AGENT; WARFARIN;

AGED; ARTICLE; AUSTRALIA; FEMALE; HUMAN; INTERNATIONAL NORMALIZED RATIO; INTERNET; INTERPERSONAL COMMUNICATION; MALE; MANAGEMENT; METHODOLOGY; MIDDLE AGED; PATIENT EDUCATION; PATIENT PARTICIPATION; PROSPECTIVE STUDY; SELF-CARE; PROCEDURES; TASMANIA;

COMMUNICATION; INTERNATIONAL NORMALIZED RATIO; INTERNET; MANAGEMENT; SELF-CARE; WARFARIN;

AGED; ANTICOAGULANTS; FEMALE; HUMANS; INTERNATIONAL NORMALIZED RATIO; INTERNET; MALE; MIDDLE AGED; PATIENT EDUCATION AS TOPIC; PATIENT PARTICIPATION; PROSPECTIVE STUDIES; TASMANIA; WARFARIN;

EID: 84883313698     PISSN: None     EISSN: 14388871     Source Type: Journal    
DOI: 10.2196/jmir.2255     Document Type: Article

References (40)

1. Beyth RJ, Landefeld CS. Learning the respective roles of warfarin and dabigatran to prevent stroke in patients with nonvalvular atrial fibrillation. Ann Intern Med 2011 Nov 15;155(10):714-5, W218. [doi: 10.1059/0003-4819-155-10- 201111150-00012] [Medline: 22084336]
2. Legrand M, Mateo J, Aribaud A, Ginisty S, Eftekhari P, Huy PT, et al. The use of dabigatran in elderly patients. Arch Intern Med 2011 Jul 25;171(14):1285-1286. [doi: 10.1001/archinternmed.2011.314] [Medline: 21788545]
3. Ansell J. New oral anticoagulants should not be used as first-line agents to prevent thromboembolism in patients with atrial fibrillation. Circulation 2012 Jan 3;125(1):165-70; discussion 170 [FREE Full text] [doi: 10.1161/CIRCULATIONAHA.111.031153] [Medline: 22215891]
4. Epstein RS, Moyer TP, Aubert RE, O Kane DJ, Xia F, Verbrugge RR, et al. Warfarin genotyping reduces hospitalization rates results from the MM-WES (Medco-Mayo Warfarin Effectiveness study). J Am Coll Cardiol 2010 Jun 22;55(25):2804-2812. [doi: 10.1016/j.jacc.2010.03.009] [Medline: 20381283]
5. Tang EO, Lai CS, Lee KK, Wong RS, Cheng G, Chan TY. Relationship between patients' warfarin knowledge and anticoagulation control. Ann Pharmacother 2003 Jan;37(1):34-39. [Medline: 12503930]
6. Khan TI, Kamali F, Kesteven P, Avery P, Wynne H. The value of education and self-monitoring in the management of warfarin therapy in older patients with unstable control of anticoagulation. Br J Haematol 2004 Aug;126(4):557-564. [doi: 10.1111/j.1365-2141.2004.05074.x] [Medline: 15287950]
7. Rombouts EK, Rosendaal FR, van der Meer FJ. Influence of dietary vitamin K intake on subtherapeutic oral anticoagulant therapy. Br J Haematol 2010 May;149(4):598-605. [doi: 10.1111/j.1365-2141.2010.08108.x] [Medline: 20151978]
8. Odén A, Fahlén M. Oral anticoagulation and risk of death: a medical record linkage study. BMJ 2002 Nov 9;325(7372):1073-1075 [FREE Full text] [Medline: 12424167]
9. Wallentin L, Yusuf S, Ezekowitz MD, Alings M, Flather M, Franzosi MG, RE-LY investigators. Efficacy and safety of dabigatran compared with warfarin at different levels of international normalised ratio control for stroke prevention in atrial fibrillation: an analysis of the RE-LY trial. Lancet 2010 Sep 18;376(9745):975-983. [doi: 10.1016/S0140-6736(10)61194-4] [Medline: 20801496]
10. Shah SV, Gage BF. Cost-effectiveness of dabigatran for stroke prophylaxis in atrial fibrillation. Circulation 2011 Jun 7;123(22):2562-2570 [FREE Full text] [doi: 10.1161/CIRCULATIONAHA.110.985655] [Medline: 21606397]
11. White HD, Gruber M, Feyzi J, Kaatz S, Tse HF, Husted S, et al. Comparison of outcomes among patients randomized to warfarin therapy according to anticoagulant control: results from SPORTIF III and V. Arch Intern Med 2007 Feb 12;167(3):239-245. [doi: 10.1001/archinte.167.3.239] [Medline: 17296878]
12. Kaatz SS, White RH, Hill J, Mascha E, Humphries JE, Becker DM. Accuracy of laboratory and portable monitor international normalized ratio determinations. Comparison with a criterion standard. Arch Intern Med 1995 Sep 25;155(17):1861-1867. [Medline: 7677552]
13. Jackson SL, Bereznicki LR, Peterson GM, Marsden KA, Jupe DM, Tegg E, et al. Accuracy, reproducibility and clinical utility of the CoaguChek S portable international normalized ratio monitor in an outpatient anticoagulation clinic. Clin Lab Haematol 2004 Feb;26(1):49-55. [Medline: 14738438]
14. Heneghan C, Ward A, Perera R, Self-Monitoring Trialist Collaboration, Bankhead C, Fuller A, et al. Self-monitoring of oral anticoagulation: systematic review and meta-analysis of individual patient data. Lancet 2012 Jan 28;379(9813):322-334. [doi: 10.1016/S0140-6736(11)61294-4] [Medline: 22137798]
15. Rosendaal FR, Cannegieter SC, van der Meer FJ, Briët E. A method to determine the optimal intensity of oral anticoagulant therapy. Thromb Haemost 1993 Mar 1;69(3):236-239. [Medline: 8470047]
16. van Walraven C, Jennings A, Oake N, Fergusson D, Forster AJ. Effect of study setting on anticoagulation control: a systematic review and metaregression. Chest 2006 May;129(5):1155-1166. [doi: 10.1378/chest.129.5.1155] [Medline: 16685005]
17. O'Shea SI, Arcasoy MO, Samsa G, Cummings SE, Thames EH, Surwit RS, et al. Direct-to-patient expert system and home INR monitoring improves control of oral anticoagulation. J Thromb Thrombolysis 2008 Aug;26(1):14-21. [doi: 10.1007/s11239-007-0068-y] [Medline: 17616845]
18. Veeger NJ, Piersma-Wichers M, Tijssen JG, Hillege HL, van der Meer J. Individual time within target range in patients treated with vitamin K antagonists: main determinant of quality of anticoagulation and predictor of clinical outcome. A retrospective study of 2300 consecutive patients with venous thromboembolism. Br J Haematol 2005 Feb;128(4):513-519. [doi: 10.1111/j.1365-2141.2004.05348.x] [Medline: 15686461]
19. Connolly SJ, Ezekowitz MD, Yusuf S, Eikelboom J, Oldgren J, Parekh A, RE-LY Steering Committee and Investigators. Dabigatran versus warfarin in patients with atrial fibrillation. N Engl J Med 2009 Sep 17;361(12):1139-1151. [doi: 10.1056/NEJMoa0905561] [Medline: 19717844]
20. Granger CB, Alexander JH, McMurray JJ, Lopes RD, Hylek EM, Hanna M, ARISTOTLE Committees and Investigators. Apixaban versus warfarin in patients with atrial fibrillation. N Engl J Med 2011 Sep 15;365(11):981-992. [doi: 10.1056/NEJMoa1107039] [Medline: 21870978]
21. Patel MR, Mahaffey KW, Garg J, Pan G, Singer DE, Hacke W, ROCKET AF Investigators. Rivaroxaban versus warfarin in nonvalvular atrial fibrillation. N Engl J Med 2011 Sep 8;365(10):883-891. [doi: 10.1056/NEJMoa1009638] [Medline: 21830957]
22. Wan Y, Heneghan C, Perera R, Roberts N, Hollowell J, Glasziou P, et al. Anticoagulation control and prediction of adverse events in patients with atrial fibrillation: a systematic review. Circ Cardiovasc Qual Outcomes 2008 Nov;1(2):84-91 [FREE Full text] [doi: 10.1161/CIRCOUTCOMES.108.796185] [Medline: 20031794]
23. Körtke H, Minami K, Breymann T, Seifert D, Baraktaris A, Wagner O, et al. [INR self-management after mechanical heart valve replacement: ESCAT (Early Self-Controlled Anticoagulation Trial)]. Z Kardiol 2001;90 Suppl 6:118-124. [Medline: 11826814]
24. Christensen TD, Maegaard M, Sørensen HT, Hjortdal VE, Hasenkam JM. Self-management versus conventional management of oral anticoagulant therapy: A randomized, controlled trial. Eur J Intern Med 2006 Jul;17(4):260-266. [doi: 10.1016/j.ejim.2005.11.021] [Medline: 16762775]
25. Matchar DB, Jacobson A, Dolor R, Edson R, Uyeda L, Phibbs CS, THINRS Executive Committee and Site Investigators. Effect of home testing of international normalized ratio on clinical events. N Engl J Med 2010 Oct 21;363(17):1608-1620. [doi: 10.1056/NEJMoa1002617] [Medline: 20961244]
26. Menéndez-Jándula B, Souto JC, Oliver A, Montserrat I, Quintana M, Gich I, et al. Comparing self-management of oral anticoagulant therapy with clinic management: a randomized trial. Ann Intern Med 2005 Jan 4;142(1):1-10. [Medline: 15630104]
27. Siebenhofer A, Rakovac I, Kleespies C, Piso B, Didjurgeit U, SPOG 60+ Study Group. Self-management of oral anticoagulation reduces major outcomes in the elderly. A randomized controlled trial. Thromb Haemost 2008 Dec;100(6):1089-1098. [Medline: 19132235]
28. Ansell JE. Empowering patients to monitor and manage oral anticoagulation therapy. JAMA 1999 Jan 13;281(2):182-183. [Medline: 9917124]
29. Latham CE. Is there data to support the concept that educated, empowered patients have better outcomes? J Am Soc Nephrol 1998 Dec;9(12 Suppl):S141-S144. [Medline: 11443762]
30. Kimmel SE, Chen Z, Price M, Parker CS, Metlay JP, Christie JD, et al. The influence of patient adherence on anticoagulation control with warfarin: results from the International Normalized Ratio Adherence and Genetics (IN-RANGE) Study. Arch Intern Med 2007 Feb 12;167(3):229-235. [doi: 10.1001/archinte.167.3.229] [Medline: 17296877]
31. Horstkotte D, Piper C, Wiemer M. Optimal Frequency of Patient Monitoring and Intensity of Oral Anticoagulation Therapy in Valvular Heart Disease. J Thromb Thrombolysis 1998 Jan;5 Suppl 1(3):19-24. [Medline: 10767128]
32. Heneghan C, Alonso-Coello P, Garcia-Alamino JM, Perera R, Meats E, Glasziou P. Self-monitoring of oral anticoagulation: a systematic review and meta-analysis. Lancet 2006 Feb 4;367(9508):404-411. [doi: 10.1016/S0140-6736(06) 68139-7] [Medline: 16458764]
33. Samsa GP, Matchar DB. Relationship between test frequency and outcomes of anticoagulation: a literature review and commentary with implications for the design of randomized trials of patient self-management. J Thromb Thrombolysis 2000 Apr;9(3):283-292. [Medline: 10728029]
34. Beyth RJ, Quinn L, Landefeld CS. A multicomponent intervention to prevent major bleeding complications in older patients receiving warfarin. A randomized, controlled trial. Ann Intern Med 2000 Nov 7;133(9):687-695. [Medline: 11074901]
35. Schulman S, Parpia S, Stewart C, Rudd-Scott L, Julian JA, Levine M. Warfarin dose assessment every 4 weeks versus every 12 weeks in patients with stable international normalized ratios: a randomized trial. Ann Intern Med 2011 Nov 15;155(10):653-9, W201. [doi: 10.1059/0003-4819-155-10-201111150-00003] [Medline: 22084331]
36. Regier DA, Sunderji R, Lynd LD, Gin K, Marra CA. Cost-effectiveness of self-managed versus physician-managed oral anticoagulation therapy. CMAJ 2006 Jun 20;174(13):1847-1852 [FREE Full text] [doi: 10.1503/cmaj.051104] [Medline: 16785459]
37. Ryan F, Byrne S, O'Shea S. Randomized controlled trial of supervised patient self-testing of warfarin therapy using an internet-based expert system. J Thromb Haemost 2009 Aug;7(8):1284-1290. [doi: 10.1111/j.1538-7836.2009.03497. x] [Medline: 19496921]
38. Harper P, Pollock D. Improved anticoagulant control in patients using home international normalized ratio testing and decision support provided through the Internet. Intern Med J 2011 Apr;41(4):332-337. [doi: 10.1111/j.1445-5994.2010.02282.x] [Medline: 20546057]
39. Ogilvie IM, Newton N, Welner SA, Cowell W, Lip GY. Underuse of oral anticoagulants in atrial fibrillation: a systematic review. Am J Med 2010 Jul;123(7):638-645.e4. [doi: 10.1016/j.amjmed.2009.11.025] [Medline: 20609686]
40. Murray E, Fitzmaurice D, McCahon D, Fuller C, Sandhur H. Training for patients in a randomised controlled trial of self management of warfarin treatment. BMJ 2004 Feb 21;328(7437):437-438 [FREE Full text] [doi: 10.1136/bmj.328.7437.437] [Medline: 14976099]