From Grand Theory to the Bedside: Levels of Nursing Knowledge and an Analysis of the Theory of Unpleasant Symptoms
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Doctor of Nursing Practice Program, Aspen University
DNP 800: Theoretical and Scientific Underpinnings
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From Grand Theory to the Bedside: Levels of Nursing Knowledge and an Analysis of the Theory of Unpleasant Symptoms
Students often meet nursing theory as a roster of theorists and diagrams, which makes it seem remote from practice. A more useful view treats theories as tools at different levels of abstraction, each suited to a different job. This paper describes how nursing knowledge develops across three levels, grand, middle-range and situation-specific theory, and then analyzes one middle-range theory, the Theory of Unpleasant Symptoms, as a candidate for explaining why hospitalized older adults stop moving and lose function. The analysis examines the theory's origins, concepts, relationships and assumptions, and tests its fit against a practice case.
Levels of Nursing Theory
Grand theories, developed mostly in the mid-twentieth century, offer broad views of nursing, person, health and environment. Orem's self-care deficit theory and Roy's adaptation model are examples. They shaped nursing education and gave the discipline a language, but their concepts are abstract and difficult to test directly, so they rarely guide a specific intervention.
Middle-range theories are narrower. They address a limited set of concepts, such as symptoms, uncertainty or comfort, with relationships precise enough to be tested and applied. They emerged in part because nurses needed theory that could guide research and practice more directly than grand theory could. Situation-specific theories go further still, addressing a particular phenomenon in a particular population or context and incorporating diversity and the sociopolitical conditions of care; they are meant to be developed from, and used in, specific clinical situations (Im & Meleis, 1999).
Knowledge develops in both directions across these levels. Some middle-range theories were derived from grand theories, others were built inductively from research and practice, and situation-specific theories can be generated from middle-range theories applied to a particular group. For a doctoral nurse planning a practice change, the middle and situation-specific levels are usually the most useful, because their concepts can be measured and their propositions suggest what an intervention should change.
For the problem of functional decline in hospital, a grand theory such as Orem's would frame the issue as a self-care deficit and nursing as compensating for it, which is accurate but too general to specify what to measure or change. A middle-range theory can name the specific concepts, such as symptoms and functional performance, and their relationships, which is what a project needs.
The Theory of Unpleasant Symptoms: Origins
The Theory of Unpleasant Symptoms was developed collaboratively by nurse researchers who had studied different symptoms, such as dyspnea and fatigue, in different populations and noticed common patterns. First published in 1995 and updated in 1997, the theory proposes that symptoms often occur together, influence one another, and affect a person's performance (Lenz et al., 1997). It is a middle-range theory developed largely inductively from research, which makes it well suited to guiding practice with measurable concepts.
Concepts and Relationships
Three components make up the theory. Symptoms come first, and each has four dimensions: intensity, timing, the level of distress it causes and its quality, meaning how it feels to the person. Symptoms can occur alone or together, and when together they can multiply one another's effects. The second is influencing factors in three categories: physiological, such as disease, hydration and nutrition; psychological, such as mood, anxiety and knowledge; and situational, such as the physical and social environment. The third is performance, which includes functional status, such as physical activity and daily activities, and cognitive function.
The 1997 update made the relationships reciprocal. Influencing factors affect symptoms, symptoms affect performance, and performance feeds back to influence symptoms and influencing factors (Lenz et al., 1997). A person who stops walking because of pain and fatigue becomes weaker, which increases fatigue and makes walking harder.
Assumptions and Evaluation
The theory assumes that symptoms are subjective experiences best reported by the person, that multiple symptoms are the norm rather than the exception, and that symptoms can be understood across diseases rather than only within one. A formal analysis using an established evaluation framework concluded that the theory's semantic clarity, consistency and parsimony could be improved, but that it demonstrates good significance, testability and empirical and pragmatic adequacy, and that it rightly directs nurses to focus on multiple symptoms rather than individual ones (Lee et al., 2017). A limitation for the present use is that the theory treats performance as an outcome of symptoms, but it says less about how the care environment, beyond the patient's own situation, shapes performance.
Testing the Fit Against a Case
Consider an 84-year-old woman on day three of a hospitalization for a heart failure exacerbation. She reports pain in her knees, shortness of breath when she sits up and fatigue that she rates as severe. She spends almost all day in bed and needed help to reach the commode this morning, although she walked independently at home. Viewed through the theory, her symptoms cluster and amplify one another. Physiological factors, including fluid overload, anemia and deconditioning, psychological factors, including worry about falling, and situational factors, including an oxygen line, a bed alarm and a nurse who has told her to call before getting up, all influence the symptoms. Her performance, walking and daily activities, has declined, and that decline feeds back into weakness and fatigue.
The theory fits the case well, and it suggests targets for intervention: treat the symptoms together rather than one at a time, address influencing factors in all three categories, and interrupt the feedback loop by preserving performance. Hospitalization-associated disability, a loss of basic daily activities during a stay, affects about a third of hospitalized adults over 70, and hospital processes that encourage bed rest contribute to it (Covinsky et al., 2011). The theory's situational category is where those processes enter the model, although, as noted, the theory does not describe them in detail.
Conclusion
Nursing knowledge develops across levels of abstraction, and middle-range and situation-specific theories are the ones most likely to guide a doctoral practice project. The Theory of Unpleasant Symptoms, built from research on multiple symptoms, offers measurable concepts, reciprocal relationships and a clear link between symptoms and functional performance. Its fit with hospitalization-associated disability is strong, provided the situational factors, especially the care environment, are given more weight than the theory itself assigns them.
References
Covinsky, K. E., Pierluissi, E., & Johnston, C. B. (2011). Hospitalization-associated disability: "She was probably able to ambulate, but I'm not sure." JAMA, 306(16), 1782-1793. https://doi.org/10.1001/jama.2011.1556
Im, E.-O., & Meleis, A. I. (1999). Situation-specific theories: Philosophical roots, properties, and approach. Advances in Nursing Science, 22(2), 11-24. https://doi.org/10.1097/00012272-199912000-00003
Lee, S. E., Vincent, C., & Finnegan, L. (2017). An analysis and evaluation of the theory of unpleasant symptoms. Advances in Nursing Science, 40(1), E16-E39. https://doi.org/10.1097/ANS.0000000000000141
Lenz, E. R., Pugh, L. C., Milligan, R. A., Gift, A., & Suppe, F. (1997). The middle-range theory of unpleasant symptoms: An update. Advances in Nursing Science, 19(3), 14-27. https://doi.org/10.1097/00012272-199703000-00003
How this DNP 800 Module 2 example is structured
Aspen does not publish DNP 800 module prompts, so check your classroom for the exact instructions. This example explains the levels of theory and how knowledge moves among them, analyzes one middle-range theory's origins, concepts, relationships and assumptions, reports a published evaluation, and tests the theory against a practice case.
DNP 800 Module 2 questions, answered
What does DNP 800 Module 2 usually ask for?
Aspen's DNP 800 description includes the patterns and processes of knowledge development, so a paper on levels of theory with an analysis of one theory is a typical assignment. Check your classroom for the prompt.
What is a middle-range theory?
A theory with a limited number of concepts and testable relationships, focused on a specific phenomenon such as symptoms or comfort, and therefore more directly useful for practice and research than grand theory.
What is the Theory of Unpleasant Symptoms?
A middle-range theory proposing that symptoms often occur together and interact, are shaped by physiological, psychological and situational factors, and affect performance, with reciprocal relationships among all three.
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