Resumo

ENCINAS-VARGAS, Dorian V  e  ARCE-CARREON, José M.. Time in therapeutic range in patients with atrial fibrillation anticoagulated with warfarin at the instituto Nacional de Torax. Cuad. - Hosp. Clín. [online]. 2021, vol.62, n.2, pp.35-41. ISSN 1562-6776.

Abstract Introduction: Atrial fibrillation is the most frequent arrhythmia, being a thrombogenic pathology, so anticoagulation is necessary in most cases. One of the most used agents is warfarin and its effect is determined by the INR and the time that the patient remains in the therapeutic range, called Time in Therapeutic Range. Objetive: To determine the Time in Therapeutic Range in patients with Atrial Fibrillation who attend outpatient cardiology consultation at the Instituto Nacional del Tórax Materials and methods_: The clinical records of patients who attended the outpatient cardiology consultation with atrial fibrillation from 2017 to 2019 were reviewed and the TTR was calculated using the Rosendaal method and percentage of INRs in the therapeutic range Results: Of212 patients within the universe, 49 patients were included in the study. The average age was 67.49 ± 12.33 years, with 63.3% of female patients. The TTR calculated by the Rosendaal method was 34 ± 25.98% and the TTR calculated by percentage of INRs in range was 31.31 ± 24.01%. The percentage of patients with adequate TTR (>70%) was 10.2%. Conclusion: Patients with atrial fibrillation anticoagulated with warfarin who attend the outpatient clinic of cardiology ofthe Instituto Nacional del Tórax present an inadequate level of Time in therapeutic range

Palavras-chave : International Normalized Ratio; Warfarin; Anticoagulants; Atrial Fibrillation.

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