Developing a telehealth medical nutrition therapy (MNT) service for adults living in rural Australia at risk of cardiovascular disease: An intervention development study.

Background: Receiving medical nutrition therapy (MNT) from an accredited practising dietitian (APD) can reduce diet-related cardiovascular disease (CVD) risk factors. However, people living in rural areas of Australia experience barriers to accessing dietitians because of their remote location. Telehealth has the potential to improve dietetic access in rural areas; however, there is limited research into the development and delivery of telehealth MNT interventions specific to these areas. The present study describes the development of the Healthy Rural Hearts (HealthyRHearts) telehealth MNT intervention, which was developed as a part of the HealthyRHearts randomised control trial, set in primary care practices in rural areas of the Hunter New England and Central Coast Primary Health Network. The aim of HealthyRHearts is to improve diet-related risk factors for CVD in rural adults at moderate to high CVD risk using a telehealth MNT intervention delivered by an APD.

Methods: The study describes the development of the HealthyRHearts telehealth MNT intervention, using the 14-item GUIDance for rEporting of intervention Development (GUIDED) checklist and the Template for Intervention Description and Replication (TIDieR) framework to guide description.

Results: HealthyRHearts is a complex intervention that aims to translate a telehealth MNT intervention for CVD prevention into rural and remote primary care settings. The intervention is designed to be implemented across multiple sites of varying characteristics and needs, with the ability to accommodate individual complexities within the rural context and target population. Participants are adults aged 45-75 years who are assessed as moderate to high risk of CVD by their general practitioner (GP). Consenting participants are referred to the intervention by their GPs and receive five telehealth MNT consultations with an APD over 6-months. APDs are trained in the intervention protocol including intervention materials, resources and behaviour change counselling strategies.

Conclusion: Using the GUIDED and TIDieR frameworks to guide description of the HealthyRHearts intervention development process facilitates detailed description of decision-making pathways for each element of the intervention design. The comprehensive description of the intervention development process for HealthyRHearts is intended to facilitate replication, iteration and optimisation of the intervention for rural contexts.