Barriers and facilitators to healthcare professional behaviour change in clinical trials using the Theoretical Domains Framework: a case study of a trial of individualized temperature-reduced haemodialysis

Justin Presseau, Brittany Mutsaers, Ahmed A Al-Jaishi, Janet Squires, Christopher W McIntyre, Amit X Garg, Manish M Sood, Jeremy M Grimshaw, Major outcomes with personalized dialysate TEMPerature (MyTEMP) investigators, Amit Bagga, Andre Charest, Andrew Steele, Arsh Jain, Charmaine Lok, David Berry, David Perkins, Rebecca Harvey, Davinder Wadehra, Derek Benjamin, Eduard Iliescu, Eli Rabin, Garth Hanson, Gihad Nesrallah, Joanna Sasal, Jessica M Sontrop, Laura Gregor, Leo Lam, Malvinder Parmar, Matthew Oliver, Michael Walsh, Nicole Delbrouck, Patricia Chan, Paul Tam, Paul Watson, Peter Blake, Phillip Zager, P J Devereaux, Reem Mustafa, Rey Acedillo, Richard Goluch, Ron Wald, Sanjay Pandeya, Stephanie Dixon, Tanya Schulman, Walter Wodchis, Justin Presseau, Brittany Mutsaers, Ahmed A Al-Jaishi, Janet Squires, Christopher W McIntyre, Amit X Garg, Manish M Sood, Jeremy M Grimshaw, Major outcomes with personalized dialysate TEMPerature (MyTEMP) investigators, Amit Bagga, Andre Charest, Andrew Steele, Arsh Jain, Charmaine Lok, David Berry, David Perkins, Rebecca Harvey, Davinder Wadehra, Derek Benjamin, Eduard Iliescu, Eli Rabin, Garth Hanson, Gihad Nesrallah, Joanna Sasal, Jessica M Sontrop, Laura Gregor, Leo Lam, Malvinder Parmar, Matthew Oliver, Michael Walsh, Nicole Delbrouck, Patricia Chan, Paul Tam, Paul Watson, Peter Blake, Phillip Zager, P J Devereaux, Reem Mustafa, Rey Acedillo, Richard Goluch, Ron Wald, Sanjay Pandeya, Stephanie Dixon, Tanya Schulman, Walter Wodchis

Abstract

Background: Implementing the treatment arm of a clinical trial often requires changes to healthcare practices. Barriers to such changes may undermine the delivery of the treatment making it more likely that the trial will demonstrate no treatment effect. The 'Major outcomes with personalized dialysate temperature' (MyTEMP) is a cluster-randomised trial to be conducted in 84 haemodialysis centres across Ontario, Canada to investigate whether there is a difference in major outcomes with an individualized dialysis temperature (IDT) of 0.5 °C below a patient's body temperature measured at the beginning of each haemodialysis session, compared to a standard dialysis temperature of 36.5 °C. To inform how to deploy the IDT across many haemodialysis centres, we assessed haemodialysis physicians' and nurses' perceived barriers and enablers to IDT use.

Methods: We developed two topic guides using the Theoretical Domains Framework (TDF) to assess perceived barriers and enablers to IDT ordering and IDT setting (physician and nurse behaviours, respectively). We recruited a purposive sample of haemodialysis physicians and nurses from across Ontario and conducted in-person or telephone interviews. We used directed content analysis to double-code transcribed utterances into TDF domains, and inductive thematic analysis to develop themes.

Results: We interviewed nine physicians and nine nurses from 11 Ontario haemodialysis centres. We identified seven themes of potential barriers and facilitators to implementing IDTs: (1) awareness of clinical guidelines and how IDT fits with local policies (knowledge; goals), (2) benefits and motivation to use IDT (beliefs about consequences; optimism; reinforcement; intention; goals), (3) alignment of IDTs with usual practice and roles (social/professional role and identity; nature of the behaviour; beliefs about capabilities), (4) thermometer availability/accuracy and dialysis machine characteristics (environmental context and resources), (5) impact on workload (beliefs about consequences; beliefs about capabilities), (6) patient comfort (behavioural regulation; beliefs about consequences; emotion), and (7) forgetting to prescribe or set IDT (memory, attention, decision making processes; emotion).

Conclusions: There are anticipatable barriers to changing healthcare professionals' behaviours to effectively deliver an intervention within a randomised clinical trial. A behaviour change framework can help to systematically identify such barriers to inform better delivery and evaluation of the treatment, therefore potentially increasing the fidelity of the intervention to increase the internal validity of the trial. These findings will be used to optimise the delivery of IDT in the MyTEMP trial and demonstrate how this approach can be used to plan intervention delivery in other clinical trials.

Trial registration: ClinicalTrials.gov NCT02628366 . Registered November 16 2015.

Keywords: Dialysate temperature; Haemodialysis; Theoretical Domains Framework; Trial implementation.

Figures

Fig. 1
Fig. 1
Process of who needs to do what differently, inter-relationships and outcomes. In the MyTEMP trial, the leadership at each dialysis centre should change local policy to ensure alignment with individualized dialysis temperatures (IDTs). Physicians should order IDTs for current patients at one time, and as new patients receive prescriptions for dialysate temperature. Nurses are likely to follow physician orders to set IDTs. Nurses will be aware of patient feedback and other clinical symptoms related to IDTs. If changes need to be made to dialysate temperature prescriptions, nurses will likely inform the physician. Finally, patients may experience improved clinical outcomes as a result of IDTs

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