| Summary: | Background: Ensuring patients fully adhere to their treatment is a major challenge for TB control programmes in resource-limited settings. This study was conducted three outpatient tuberculosis clinics in Hanoi, Vietnam. We aimed to evaluate the feasibility of using asynchronous Video Directly Observed Therapy (VDOT) to support treatment adherence among patients with bacteriologically confirmed pulmonary tuberculosis. Methods: In this cohort study, consecutive adult patients with bacteriologically confirmed pulmonary TB were invited to enroll in a programme of VDOT. Patients were trained to use a smartphone to record themselves taking treatment for TB. Videos were uploaded to an online server and reviewed daily by study staff for at least two months. Adherence was evaluated based upon monthly pill count. Results: Between November 2016 and January 2017, 40 of 78 eligible participants (51.3%) agreed to commence VDOT. Among participating patients, 27 (71.1%) of patients took all required doses. A median of 88.4% (interquartile range 75.8%-93.7%) of doses were correctly recorded and uploaded. Participants rated the VDOT interface highly, despite facing some initial technical difficulties. Conclusion: VDOT was feasible and resulted in high rates of treatment adherence in a resource-limited setting. Keywords: Tuberculosis, Adherence support, Video, Technology, Treatment
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