Iowa, Johns Hopkins, Stetler and ACE Star are weighed against one bathing change on one oncology unit, and a choice is defended, in this MN504 Unit 8 translation model comparison. Searches like "mn 504 unit 8 assignment example", "mn504 unit 8 sample" and "mn504 unit 8 example" land here.
Choosing a Translation Model for Chlorhexidine Bathing on an Oncology Unit: Iowa, Johns Hopkins, Stetler and ACE Star Compared
[Student Name]
Purdue University Global
MN504: Evidence-Based Practice
Unit 8 Assignment
[Instructor Name]
[Date]
The oncology unit is a composite. The four models are described from their published sources.
The Change Under Consideration
The proposed change is daily bathing with 2% chlorhexidine gluconate cloths for adults with a central venous catheter on a 30-bed inpatient oncology unit. The literature synthesis rated the evidence for this population as suggestive: strong in intensive care, null for bathing all patients on general units, and favorable but thin for patients with central lines outside intensive care. A translation model for this project must therefore handle evidence that is promising but not settled, allow a trial on one unit before any wider decision, and support sustaining a daily nursing task if it is adopted. It must also suit a team led by bedside nurses and a clinical nurse specialist rather than a research department, since the unit has no dedicated research staff and the project will be carried out alongside normal clinical work.
Criteria and Comparison Table
Six criteria follow from the change. For each, the four models are compared.
Origin and intended user. Iowa: developed at an academic medical center for clinicians and organizations leading practice change. Johns Hopkins: developed for bedside nurses and teams, with a structured process and appraisal tools. Stetler: developed for the individual practitioner using research in practice. ACE Star: developed as a model of how knowledge is transformed from research into practice.
Phases or steps. Iowa: triggers, a priority decision, team formation, evidence assembly and appraisal, a sufficiency decision, a pilot, an adoption decision, integration and dissemination (Iowa Model Collaborative, 2017). Johns Hopkins: practice question, evidence and translation phases (Dang et al., 2022). Stetler: preparation, validation, comparative evaluation and decision making, translation and application, and evaluation (Stetler, 2001). ACE Star: discovery, evidence summary, translation to guidelines, practice integration and evaluation (Stevens, 2013).
How the model treats weak evidence. Iowa: if evidence is insufficient, it directs the team to conduct research or seek other evidence before designing the change. Johns Hopkins: grades evidence strength and quality and matches the translation pathway to the strength of the evidence. Stetler: asks the practitioner to weigh fit, feasibility and the strength of findings. ACE Star: assumes evidence is summarized before translation.
Whether the model builds in a pilot. Iowa: yes, explicitly, followed by a separate decision on adoption. Johns Hopkins: translation includes planning, implementing and evaluating the change, which can include a pilot. Stetler: a pilot is possible but not a named step. ACE Star: not a distinct step.
How the model handles organizational priority. Iowa: a named decision point asks whether the topic is a priority for the organization. Johns Hopkins: considers organizational fit and feasibility in translation. Stetler: less focused on organizational steps. ACE Star: not specified.
Sustaining the change. Iowa: integration and sustaining are named steps after adoption. Johns Hopkins: includes dissemination and evaluation of outcomes. Stetler: includes evaluation. ACE Star: includes evaluation as its final point.
The Four Models
The revised Iowa Model, published in 2017 after validation with users, has three decision points: whether the topic is a priority, whether there is sufficient evidence and whether the change is appropriate for adoption in practice after a pilot (Iowa Model Collaborative, 2017). Its structure follows the course of an organizational change from trigger to sustaining.
The Johns Hopkins model is organized around a practice question, evidence appraisal and translation (Dang et al., 2022). Its appraisal tools are its greatest strength, and its translation phase asks explicitly about fit, feasibility and appropriateness in the setting. It is widely used, and an organization already using it would reasonably keep it for this project.
Stetler's model is oriented toward the practitioner who uses research findings, with strong emphasis on critical thinking about whether findings fit the practitioner's situation (Stetler, 2001). It is lighter on the organizational steps a unit-wide change needs.
The ACE Star Model describes how knowledge is transformed through five points, from discovery to evaluation (Stevens, 2013). It is most useful when a guideline must first be built from evidence, and less directly suited to a single unit's decision about one practice.
Limits of the Comparison
The comparison has limits worth stating. The criteria were chosen to fit this change, a single-unit trial of a daily nursing task supported by suggestive evidence; a different change, such as building a hospital-wide guideline from a large body of trials, would favor different features and might favor ACE Star or Johns Hopkins. The models also overlap more in practice than their diagrams suggest. Most teams using any of them appraise evidence, plan a change, evaluate it and decide what to keep, and the differences lie in what each model makes explicit. Iowa makes the pilot and the adoption decision explicit, and that explicitness matters most when evidence is not settled, because it protects a team from treating a trial as a commitment. Finally, the model descriptions here come from their published sources; how each is used in a particular hospital may differ, and the oncology unit's parent organization currently has no system-wide model, which leaves the choice open.
Selection
The choice turns on the pilot and the separate adoption decision, because suggestive evidence calls for a trial on one unit and a deliberate decision afterward, not a commitment made at the start. Iowa is the only model of the four that names both steps and places the adoption decision after the pilot. Its sufficiency decision also fits the synthesis: the evidence is sufficient to justify a pilot limited to patients with central lines, but not to justify unit-wide adoption without local data. Johns Hopkins would be a strong second choice, especially for its appraisal tools, and the project will borrow its evidence rating scheme, already used in the Unit 5 table.
The Project on Iowa's Steps
Trigger: two central line infections in one quarter. Priority decision: infection prevention and the oncology nurse manager agree the topic is a priority. Team: the oncology unit's clinical nurse specialist, two staff nurses, a nursing assistant, an infection preventionist and a pharmacist. Evidence: the Unit 3 search, Unit 5 table and Unit 7 synthesis. Sufficiency decision: sufficient for a pilot restricted to patients with central lines. Pilot: twelve weeks of daily cloth bathing, measuring infection rates per 1,000 catheter days, adherence and skin reactions, and recording every other practice change during the pilot. Adoption decision: made at the end of the twelve weeks by the team and the unit's leadership. Integration: if adopted, bathing is built into the nursing assistant workflow and supply ordering, with quarterly review of adherence and infection data by the unit practice council.
References
Dang, D., Dearholt, S. L., Bissett, K., Ascenzi, J., & Whalen, M. (2022). Johns Hopkins evidence-based practice for nurses and healthcare professionals: Model and guidelines (4th ed.). Sigma Theta Tau International.
Iowa Model Collaborative. (2017). Iowa model of evidence-based practice: Revisions and validation. Worldviews on Evidence-Based Nursing, 14(3), 175-182. https://doi.org/10.1111/wvn.12223
Stetler, C. B. (2001). Updating the Stetler model of research utilization to facilitate evidence-based practice. Nursing Outlook, 49(6), 272-279. https://doi.org/10.1067/mno.2001.120517
Stevens, K. R. (2013). The impact of evidence-based practice in nursing and the next big ideas. Online Journal of Issues in Nursing, 18(2), Manuscript 4. https://doi.org/10.3912/OJIN.Vol18No02Man04
How this MN504 Unit 8 example is structured
Criteria come before models, so the comparison tests each framework against the needs of this change rather than describing four and picking a favorite. The Iowa Model, revised in 2017, has three decision points, whether the topic is a priority, whether evidence is sufficient and whether a piloted change is appropriate for adoption. The Johns Hopkins model is credited with strong appraisal tools and a translation phase that asks about fit and feasibility. Stetler's model is described as oriented to the practitioner using research, strong on critical thinking and lighter on organizational steps. ACE Star is presented as a model of knowledge transformation, most useful when a guideline must first be built from evidence. The choice turns on the pilot and the adoption decision, which suit suggestive evidence. The paper notes that an organization already using another model would reasonably keep it.
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MN504 Unit 8 questions, answered
Why not simply use the model my hospital already follows?
That is often the strongest choice, and many prompts accept it if the justification is explicit. A house model brings familiar forms, trained staff and leadership support, which matter for translation. The comparison still has to show why it suits this particular change, and where it is weaker than an alternative, rather than defaulting to it silently.
Is a translation model the same as a change theory?
No, though papers commonly use both. A translation model such as Iowa or Johns Hopkins guides the path from a clinical question through evidence to a practice change and its evaluation. A change theory such as Lewin's or Kotter's explains how people and organizations move from old habits to new ones. A proposal can use one of each, provided their roles are kept distinct.
Where does i-PARIHS fit in a comparison like this?
It can appear as a complement rather than a rival. Integrated PARIHS, from Harvey and Kitson, frames implementation success as facilitation applied to three things: the innovation, the people receiving it, and the setting. It diagnoses why a change may stall more than it sequences the steps of a project, so some writers pair it with a process model such as Iowa.