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ORIGINAL ARTICLE
Year : 2020  |  Volume : 152  |  Issue : 3  |  Page : 303-307

Quality of anticoagulation with warfarin in rural Chhattisgarh, India


1 Department of Medicine, Washington University in St. Louis, Missouri, USA
2 Jan Swasthya Sahyog, Chhattisgarh, India
3 Department of Hospital Medicine, Columbia University Medical Center, New York, USA
4 Division of Biostatistics, Washington University in St. Louis, St. Louis, Missouri, USA

Correspondence Address:
Dr Puja Chebrolu
7595 River Crest Dr, Columbus, GA 31904
USA
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijmr.IJMR_1201_18

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Background & objectives: In most of rural India, warfarin is the only oral anticoagulant available. Among patients taking warfarin, there is a strong association between poor control of the international normalized ratio (INR) and adverse events. This study was aimed to quantify INR control in a secondary healthcare system in rural Chhattisgarh, India. Methods: The INR data were retrospectively obtained from all patients taking warfarin during 2014-2016 at a secondary healthcare system in rural Chhattisgarh, India. Patients attending the clinic had their INR checked at the hospital laboratory and their warfarin dose adjusted by a physician on the same day. The time in therapeutic range (TTR) was calculated for patients who had at least two INR visits. Results: The 249 patients had 2839 INR visits. Their median age was 46 yr, and the median body mass index was 17.7 kg/m[2]. They lived a median distance of 78 km (2-3 h of travel) from the hospital. The median INR was 1.7 for a target INR of 2.0-3.0 (n=221) and 2.1 for a target of 2.5-3.5 (n=28). The median TTR was 13.0 per cent, and INR was subtherapeutic 66.0 per cent of the time. Distance from the hospital was not correlated with TTR. Interpretation & conclusions: INR values were subtherapeutic two-thirds of the time, and TTR values were poor regardless of distance from the health centre. Future studies should be done to identify interventions to improve INR control.


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