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  1. www.ahajournals.org › doi › fullA Patient’s Guide to Taking Coumadin/Warfarin | Circulation

    3 Μαρ 2009 · It is important to monitor the INR (at least once a month and sometimes as often as twice weekly) to make sure that the level of warfarin remains in the effective range. If the INR is too low, blood clots will not be prevented, but if the INR is too high, there is an increased risk of bleeding.

  2. www.ahajournals.org › doi › 10Time in the Therapeutic Range for Patients Taking Warfarin in...

    18 Απρ 2017 · The time in the therapeutic range (an international normalized ratio [INR] between 2.0 and 3.0) (TTR) has been used as a measure of warfarin (W) therapy quality.

  3. my.clevelandclinic.org › health › diagnosticsProthrombin Time (PT/INR) Test - Cleveland Clinic

    29 Απρ 2024 · The normal ranges for PT/INR results are: 11 to 13.5 seconds. INR of 0.8 to 1.1. INR of 2.0 to 3.0 if you’re taking warfarin. (There are some conditions for which a higher or lower target PT range is desired.) Abnormal PT results. A high PT test result or INR level means it takes more time than usual for your blood to clot.

  4. www.ncbi.nlm.nih.gov › pmc › articlesTime in therapeutic range, quality of life and treatment...

    20 Οκτ 2020 · Background. The use of warfarin in patients with non-valvular atrial fibrillation (NVAF) can be challenging. In this study, we evaluate the time in therapeutic range (TTR), health-related quality of life (HRQoL) and treatment satisfaction of patients on long-term warfarin for NVAF.

  5. www.ahajournals.org › doi › 10Warfarin Management | Circulation - AHA/ASA Journals

    31 Ιουλ 2012 · In most cases, an INR between 2 and 3 indicates that the warfarin dose is about right. In one large study, 1 the risk of stroke caused by a blood clot increased 3 to 4 times when the INR was between 1.4 and 1.7 (not enough warfarin).

  6. thrombosis.org › wp-content › uploadsArticle - A Guide to INR Levels - North American Thrombosis Forum

    measures how much time it takes for your blood to clot and will determine if you’re receiving the right dose of warfarin. If your INR is too low, you could be at risk for a blood clot – but if it’s too high, you could experience bleeding. A typical INR target ranges from 2-3 but can vary from patient to patient.

  7. www.mayoclinic.org › tests-procedures › prothrombin-timeProthrombin time test - Mayo Clinic

    30 Νοε 2022 · In healthy people an INR of 1.1 or below is considered normal. An INR range of 2.0 to 3.0 is generally an effective therapeutic range for people taking warfarin for certain disorders. These disorders include atrial fibrillation or a blood clot in the leg or lung.