NU263 Unit 5 Cardiorenal Concept Map Example

Course	NU263 Medical-Surgical Nursing III
Unit	Unit 5
Paper type	Concept map with written analysis
Length	About 890 words, 6 pages double-spaced
Format	APA 7 student paper
School	Purdue University Global
Program	BSN (prelicensure)
Updated	October 2026

Free sample paper for NU263 Unit 5

Plus and Minus on Every Arrow: A Concept Map of a Composite 71-Year-Old Woman With Decompensated Heart Failure Whose Creatinine Climbs as Her Lungs Fill, Drawn as One Reinforcing Loop Among Heart, Kidneys and Lungs With Each Treatment Marked Where It Breaks the Loop

[Student Name]

Purdue University Global

NU263: Medical-Surgical Nursing III

Unit 5 Concept Map

[Instructor Name]

[Date]

The patient is composite; the map is given as nodes and signed links because the original is a diagram, values are bracketed where illustrative, and medications and doses are the provider's.

What this part is doingSigned arrows force each link to state a direction, which is how the map shows a loop rather than a list of problems.

The Patient

[Mrs. P.], composite, 71, whose left ventricle ejects about [30] percent of its volume with each beat. Admitted after [five] days of increasing breathlessness, three-pillow orthopnea, a weight gain of [3.5] kg and leg swelling to the knees. Crackles halfway up both lungs, jugular venous pressure raised, saturation [90] percent on room air. Blood pressure [138/84], heart rate [102]. Creatinine [1.8] mg/dL, baseline [1.2]. Potassium [4.9]. She admits she stopped her diuretic for a week before a family wedding.

Nodes

1. Weak left ventricle, low forward output.

2. Reduced kidney perfusion.

3. Hormonal and nervous activation: renin, angiotensin, aldosterone and adrenaline.

4. Sodium and water retention.

5. Rising venous pressure and congestion.

6. Fluid in the lungs; breathlessness; low oxygen.

7. Congestion of the kidneys' veins.

8. Rising creatinine.

9. Rising potassium.

Signed Links

1 to 2: (+) low output increases kidney underperfusion. 2 to 3: (+) underperfusion activates the hormonal system. 3 to 4: (+) hormones increase sodium and water retention. 4 to 5: (+) retained fluid increases venous pressure. 5 to 6: (+) venous pressure pushes fluid into the lungs. 5 to 7: (+) venous pressure is transmitted back to the kidneys. 7 to 8: (+) kidney congestion reduces filtration and raises creatinine. 6 to 1: (+) low oxygen and tachycardia further strain the weak ventricle. 3 to 1: (+) constricted vessels make the ventricle pump against more resistance. 8 to 9: (+) falling filtration raises potassium. Followed around, the signs are all positive, which makes the loop reinforcing: each problem drives the next, and the last drives the first. Heart and kidney failure feeding each other in this way is described as cardiorenal syndrome (Ronco et al., 2008).

Every arrow in the loop is a plus, so the map says plainly that without treatment each problem makes the others worse.

What this part is doingThe map commits to a direction on every arrow, so the reasoning can be checked link by link.

Bars Across Arrows: Where Treatment Interrupts

IV loop diuretic: a bar across 4 to 5, reducing retained fluid and venous pressure. This also relieves 5 to 7, so kidney congestion falls. Oxygen: a bar across 6 to 1, reducing the strain of low oxygen. Restarting her guideline medications when her kidneys and pressure allow, as ordered: bars across 3 to 4 and 3 to 1. Sodium and fluid guidance: a bar on the entry of new fluid into node 4.

A Creatinine That May Be Acceptable

As diuresis begins, her creatinine may rise a little further. Not every rise means harm: in a trial of diuretic strategies in acute heart failure, a higher-dose approach produced more fluid loss and some transient worsening of kidney function without a clear long-term penalty (Felker et al., 2011). The map marks creatinine with a note: read it beside urine output, weight and breathing. A rising creatinine with falling weight and easier breathing is different from a rising creatinine with no diuresis.

What this part is doingThe note on creatinine shows that one number is interpreted in context, which prevents stopping an effective treatment too early.

Potassium From Both Ends

Potassium sits where two forces meet. Falling kidney filtration and her usual aldosterone blocker raise it; loop diuretics lower it. The map draws a minus from the diuretic to node 9 and a plus from node 8, and the plan is daily potassium with replacement or holding of drugs as ordered.

Nursing Priorities Read From the Map

1. Breathing and oxygen: position upright, oxygen to target, watch work of breathing.

2. Fluid removal: strict intake and output, a weight each morning on one scale after voiding, urine response after each diuretic dose.

3. Kidneys and potassium: daily labs, trends read together.

4. Teaching: why stopping the diuretic before the wedding started the loop, and what to do differently next time (Harding et al., 2023).

What the Loop Means for Discharge

The same loop can restart at home. Stopping her diuretic before the wedding removed a bar from the map, and within a week the loop was running again. Discharge teaching therefore follows the map: weigh each morning and phone the clinic after a gain of about [1] kg overnight or [2] kg over several days, keep salt intake within the plan, never stop the diuretic without calling, and watch for the early signs of the loop restarting, such as needing more pillows at night. Her daughter, who manages her pill box, joins the teaching so that the bar stays in place.

Reading the Map Aloud

At the bedside the nurse used the loop to explain her admission to her: the heart pumps weakly, the kidneys think the body is dry, they hold water, the water backs up into her lungs and legs, and the extra pressure makes the kidneys and heart work harder still. She said it was the first time the pieces had made sense together.

Evaluation at 72 Hours

Weight down [3.1] kg, crackles at the bases only, saturation [95] percent on room air, creatinine [1.6] and potassium [4.4].

References

Felker, G. M., Lee, K. L., Bull, D. A., Redfield, M. M., Stevenson, L. W., Goldsmith, S. R., LeWinter, M. M., Deswal, A., Rouleau, J. L., Ofili, E. O., Anstrom, K. J., Hernandez, A. F., McNulty, S. E., Velazquez, E. J., Kfoury, A. G., Chen, H. H., Givertz, M. M., Semigran, M. J., Bart, B. A., ... O'Connor, C. M. (2011). Diuretic strategies in patients with acute decompensated heart failure. New England Journal of Medicine, 364(9), 797-805. https://doi.org/10.1056/NEJMoa1005419

Harding, M. M., Kwong, J., Hagler, D., & Reinisch, C. (2023). Lewis's medical-surgical nursing: Assessment and management of clinical problems (12th ed.). Elsevier.

Ronco, C., Haapio, M., House, A. A., Anavekar, N., & Bellomo, R. (2008). Cardiorenal syndrome. Journal of the American College of Cardiology, 52(19), 1527-1539. https://doi.org/10.1016/j.jacc.2008.07.051

NU263 Unit 5 instructions, in plain terms

In Unit 5 the usual task is mapping a patient with interacting system failures, showing relationships among problems and where treatments act, with a written explanation. Prompts usually want nodes for each problem, labeled links, treatments connected to the links they affect and nursing priorities drawn from the map. Instructors look for links that state direction and cause, recognition of loops in which problems reinforce each other, treatments placed precisely and lab values interpreted in context. A clear discharge implication is often expected. The map is supported by a written key of about four pages, citing a source on cardiorenal interaction, and trial evidence on diuretic strategy. The map should be readable without the key, and the key should be readable without the map.

Inside the NU263 Unit 5 example

The map introduces Mrs. P., her ejection fraction, symptoms, labs and the missed diuretic. Nine nodes are listed, then ten signed links, each a plus, with a note that the signs make the loop reinforcing, citing a review of cardiorenal syndrome. A highlighted line states what the all-positive loop means, with a margin note. Bars across arrows place each treatment. A note on creatinine draws on a diuretic strategy trial, with a margin note on reading labs in context. Potassium is shown pushed from both ends. Nursing priorities, a discharge section built from the loop, a bedside explanation and the seventy-two-hour evaluation close the key.

Where the points sit in the NU263 Unit 5 rubric

Concept map rubrics in NU 263 typically award marks for completeness, accuracy and direction of links, placement of interventions, interpretation of data, nursing priorities and the written key. Completeness marks depend on cardiac, renal and respiratory nodes all appearing. Link marks go to arrows that state direction and mechanism, not just connection. Intervention marks reward placing each treatment on the link it changes. Interpretation marks are earned by reading creatinine and potassium with weight, urine and breathing rather than alone. Priority marks require an order that follows from the map. Key marks cover citations and clarity. Maps that identify a reinforcing loop and show how it can restart at home usually score highest.

NU263 Unit 5 help: mistakes that cost points

Concept maps of heart failure often lose marks by listing problems in boxes without arrows that commit to direction. Another frequent error is treating any rise in creatinine during diuresis as a reason to stop, without looking at weight, urine and breathing. Some students attach every treatment to a single box rather than the link it changes. Others forget potassium can be driven both up and down at once. Give every arrow a sign, follow the loop around, place treatments as bars on the links they interrupt, read labs in context, rank priorities from the map and turn the loop into discharge teaching. Explain the map to the patient in plain words.

Get an NU263 Unit 5 example written to your instructions

Concept map templates differ: free-form, hub and spoke, a required legend, a fixed number of nodes. Attach whichever one the Unit 5 instructions require, with the case and the rubric, noting any symbols the instructor expects. Signed arrows and break points survive even where a template forces another layout, and every node carries that patient's own values. First custom sample free, in 24-48h. The paper above is an original model document written by our desk, not a submitted student paper and not an official Purdue University Global document.

More NU263 papers and BSN samples

NU263 Unit 5 questions, answered

Where can I find a free NU263 Unit 5 sample paper?

The complete NU263 Unit 5 concept map is on this page, showing heart, kidneys and lungs as a reinforcing loop in a composite woman with decompensated heart failure, with treatments, priorities and three sources. Your own patient's problems can be mapped this way with our help.

What is cardiorenal syndrome?

A condition in which heart and kidney dysfunction worsen each other, for example when low output and venous congestion reduce kidney function, which then increases fluid retention.

Why put a plus or minus on each arrow in NU263 Unit 5?

Signs force each link to state whether it increases or decreases the next problem, which reveals loops that reinforce themselves.

Is a rising creatinine during diuresis always harmful?

Not always. A small rise with falling weight and easier breathing may be acceptable; it is read in context, not alone.

Why can potassium go up and down at once?

Falling kidney function and some heart failure drugs raise potassium, while loop diuretics lower it, so daily levels guide replacement or holding drugs.