NR 585NP Week 2 Clinical Question Write-Up Example

Clinical Question Write-Up: Home Readings Acted On by a Nurse Under Protocol, for 268 Patients Whose Office Readings Stay Above 130/80, Defended Word by Word

Student Name

College of Nursing, Chamberlain University

NR 585NP: Research Methods and Evidence-Based Practice for Advanced Nursing Practice

Instructor Name

Month Day, Year

Clinical Question Write-Up: Home Readings Acted On by a Nurse Under Protocol, for 268 Patients Whose Office Readings Stay Above 130/80, Defended Word by Word

Problem Before Question

Cedar Family Practice, a composite two-site primary care group, has 742 adults with diagnosed hypertension. In the past 12 months, 268 of them, about 36%, had two successive office pressures at 130/80 mm Hg or above, which is how the practice defines uncontrolled. These patients average about two office visits a year. Clinicians are adjusting medication on two or three readings a year, which may not show what the pressure is doing between visits. A colleague proposed lending home cuffs. The question below asks what the evidence says before the practice spends money or staff time.

The Question

In adults aged 18 to 85 at Cedar Family Practice with diagnosed hypertension whose last two office readings were both 130/80 mm Hg or higher (P), does self-measured blood pressure monitoring with a validated upper-arm cuff, with readings reviewed and medication adjusted by a registered nurse under a standing protocol (I), compared with the office-only care Cedar gives now (C), lower mean office systolic blood pressure and increase the proportion of patients below 130/80 mm Hg (O) at six months (T)?

Defending the Population

The population is the 268 patients the eventual claim is meant to reach, not the whole panel of 742. Patients already at goal would dilute any effect. The 130/80 threshold follows the 2017 ACC/AHA guideline, which set that level as the treatment target for most adults with hypertension (Whelton et al., 2018). Many trials used 140/90, so evidence from them may not transfer directly; that mismatch is noted now so the appraisal can watch for it.

The age band excludes patients over 85, for whom treatment targets are often individualized. Pregnant patients are excluded because their blood pressure management follows different guidance. Had the population been left as "adults with hypertension," any finding would land on nobody in particular.

Defending the Intervention

"Home monitoring" alone would be too loose to reproduce. The intervention specifies a validated upper-arm cuff, because wrist and unvalidated devices give less reliable readings, and the joint policy statement from the American Heart Association and American Medical Association recommends validated upper-arm devices (Shimbo et al., 2020). It specifies who acts on the readings: a registered nurse, under a standing protocol approved by the practice's medical director. Without the second half, the question would ask about cuffs alone, which the evidence suggests do little on their own (Tucker et al., 2017).

A protocol would need further detail: readings twice in the morning and twice in the evening for seven days each month, sent through the patient portal or read by phone, with a medication step when the home average stays at or above 130/80. The question names the core; the protocol carries the rest.

Why the Comparison Decides Everything

The comparison is what Cedar does today: office readings, medication changes at visits and follow-up at the clinician's discretion. A real alternative is essential because the question is about difference. If the comparison were "no intervention," the question would turn into one about how blood pressure behaves in people who monitor at home, with nothing on the other side. If the comparison were "home monitoring alone," the question would test only the nurse's role, which is a narrower question the practice is not yet asking.

Outcomes That Matter Against Outcomes That Are Handy

The outcomes are average clinic systolic pressure and the proportion of patients under 130/80. Both are measured the same way in usual care, so the comparison is fair. The handy outcomes, such as number of cuffs lent or number of home readings sent, are easy to pull from the portal and say nothing about whether pressure fell. Strokes and heart attacks matter most to patients, but they are rare over six months at a practice this size; blood pressure is the accepted measure that leads to them, and the write-up states this openly instead of implying the trials measured events.

Defending the Time Frame

Six months allows three or four monthly medication adjustments, and pressure changes after each adjustment within a few weeks. Several of the trials report outcomes at 6 and 12 months, so six months also makes comparison with published results possible. A shorter window, chosen because the course is eight weeks, would miss most of the effect.

The Design the Question Implies

The question asks about the effect of an intervention against an alternative, so it implies a randomized controlled trial or a systematic review of such trials. An observational before-and-after study at Cedar would record any shift in the numbers without being able to separate the intervention's effect from seasonal change, new staff or other programs running at the same time. Those other explanations are exactly what random assignment removes, and they are common in a practice that changes several things a year. The search in the next week will therefore filter first for systematic reviews and trials, and record what that filter excludes.

What Changed While Drafting

My first draft read: "Does home blood pressure monitoring improve blood pressure control?" It had no population, no comparison and no time frame, and "improve control" could mean anything. Writing each element out showed that the colleague's original idea, cuffs alone, was not the question worth asking. The question changed from "do cuffs work?" to "does acting on home readings work?"

Questions Considered and Rejected

Three other questions came up while drafting. A prognosis question, whether home readings predict strokes better than office readings, is important but would not tell Cedar what to do for the 268 patients. A meaning question, how patients experience monitoring at home, would help design the program but cannot show whether it lowers pressure. A cost question, whether a nurse-led program pays for itself, depends first on whether it works. Each would need a different design: a cohort study, a qualitative study and an economic evaluation. Writing them down helped confirm that the question above is the one the practice's decision depends on, and that the other three can follow once it is answered.

Limits

The question fits a practice like Cedar, with a nurse available and a portal in use. A practice without either would need a different intervention. It also leaves cost out; that will be part of the later recommendation.

References

Shimbo, D., Artinian, N. T., Basile, J. N., Krakoff, L. R., Margolis, K. L., Rakotz, M. K., & Wozniak, G. (2020). Self-measured blood pressure monitoring at home: A joint policy statement from the American Heart Association and American Medical Association. Circulation, 142(4), e42-e63. https://doi.org/10.1161/CIR.0000000000000803

Tucker, K. L., Sheppard, J. P., Stevens, R., Bosworth, H. B., Bove, A., Bray, E. P., Earle, K., George, J., Godwin, M., Green, B. B., Hebert, P., Hobbs, F. D. R., Kantola, I., Kerry, S. M., Leiva, A., Magid, D. J., Mant, J., Margolis, K. L., McKinstry, B., ... McManus, R. J. (2017). Self-monitoring of blood pressure in hypertension: A systematic review and individual patient data meta-analysis. PLOS Medicine, 14(9), e1002389. https://doi.org/10.1371/journal.pmed.1002389

Whelton, P. K., Carey, R. M., Aronow, W. S., Casey, D. E., Jr., Collins, K. J., Dennison Himmelfarb, C., DePalma, S. M., Gidding, S., Jamerson, K. A., Jones, D. W., MacLaughlin, E. J., Muntner, P., Ovbiagele, B., Smith, S. C., Jr., Spencer, C. C., Stafford, R. S., Taler, S. J., Thomas, R. J., Williams, K. A., Sr., ... Wright, J. T., Jr. (2018). 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults. Hypertension, 71(6), e13-e115. https://doi.org/10.1161/HYP.0000000000000065