Hypertension Clinical Trial
Official title:
Effectiveness and Adoption of the Structured mHealth Intervention for Improving Blood Pressure Control (TelTex4BP) Among Adults With Hypertension in Nepal: A Randomized Controlled Trial
Despite evidence of preventing cardiovascular disease (CVD) risk through lifestyle changes, many patients with hypertension (HTN) do not comply with this and suffer from CVD and other complications. A previous study using a structured lifestyle intervention program has reported a 14% decrease in the 10-year risk of developing CVD at one year among hypertensive and diabetes patients. Low and Middle-Income countries (LMICs) struggle with a shortage of health workers to deliver such interventions. In this context, mobile phones can contribute to bridging this gap by incorporating them into the health system for health intervention delivery. There is a need to develop contextual mHealth intervention adapted to local needs and culture and test its effectiveness in LMIC settings like Nepal. Our previous small-scale pilot mHealth (text messages) study reported promising evidence in reducing blood pressure among hypertensive patients in the intervention arm [adjusted reduction in systolic blood pressure (BP) -6.50 (95% CI, -12.6; -0.33) and diastolic BP -4.60 (95% CI, -8.16; -1.04)], with a greater proportion achieving target BP (70% vs 48% in the control arm, p = 0.006)] and improving treatment compliance (p < 0.001) in Nepal. This finding supports the expansion to a large-scale trial of a structured mHealth intervention to see its long-term effectiveness and sustainability for patients with HTN to improve BP control and reduce CVD risk. Hence, this study aims to assess the effectiveness of a behavioural intervention through mHealth (telephone/mobile phone calls and text messages) informed by the RE-AIM framework for improving blood pressure control among patients with hypertension in a hospital (Manamohan Cardiothoracic Vascular and Transplant Center) of Kathmandu, Nepal.
This study will be a hybrid type 2 effectiveness-implementation study using mixed methods, a parallel randomized controlled trial with a nested qualitative design. The intervention will be codesigned involving patients, their family members, and healthcare providers to incorporate their views, the local context and culture through a formative qualitative component informed by the COM-B model. A multi-component mHealth intervention will be delivered through text messages and phone calls (TelTex4BP) by nurses, focusing on behaviour changes (physical activity, healthy diet), medication adherence, a reminder for follow-up, smoking, and alcohol intake. The intervention will be delivered for six months, and follow-up will be carried out at the end of the intervention and six months later (at one year) to assess sustainability and long-term effectiveness. Clinical (blood pressure, 10-year risk of CVD), intermediate (medication adherence, change of dietary habits/physical activity), and implementational outcomes ( Reach, Adoption, Intervention fidelity and Maintenance) will be evaluated using the RE-AIM framework. If the intervention is proven effective, the study findings will be disseminated to promote scaling up to other similar settings. ;
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