NRNP 6560 Week 3 Assignment: Musculoskeletal, Immunologic, Autoimmune, and Transplant-Related Disorders
NRNP 6560 Case Study Student Template
- History of Present Illness (HPI) Statement
Mr. A.K. is a 56-year-old male with a history of end-stage renal disease secondary to hypertension and type 2 diabetes mellitus who received a deceased-donor kidney transplant nine months ago. He presented to the emergency department with progressively worsening fatigue, decreased urine output, bilateral lower-extremity swelling, and reduced appetite. The patient reports that symptoms developed gradually over the past week and have become increasingly severe. He denies fever, chills, dysuria, hematuria, nausea, vomiting, recent illness, or known exposure to infection. He admits to missing several transplant clinic appointments and reports interruption of one of his prescribed transplant medications for approximately 10 days due to refill difficulties. Vital signs reveal hypertension and tachycardia. Physical examination demonstrates bilateral pitting edema and mild tenderness over the transplanted kidney. Laboratory findings show significant deterioration in renal function with a serum creatinine increase from a baseline of 1.3 mg/dL to 3.5 mg/dL, elevated blood urea nitrogen, hyperkalemia, and leukocytosis.
- Diagnostic Testing Plan
The initial diagnostic approach should focus on identifying the underlying cause of allograft dysfunction while evaluating for potentially reversible causes of acute kidney injury. Serial measurements of serum creatinine, blood urea nitrogen, potassium, and estimated glomerular filtration rate should be obtained to assess progression of renal impairment. Tacrolimus trough levels should be measured to evaluate medication exposure and determine whether subtherapeutic drug levels contributed to graft dysfunction.
Urinalysis with urine protein quantification should be obtained because proteinuria may indicate allograft injury. Renal transplant ultrasonography with Doppler evaluation is indicated to assess renal blood flow, exclude vascular complications, and identify possible urinary obstruction. Donor-specific antibody testing should be ordered because the development of donor-specific antibodies is strongly associated with antibody-mediated rejection (Böhmig, 2025). Screening for BK polyomavirus and cytomegalovirus infections should also be performed, as infectious complications may mimic rejection. Electrocardiographic monitoring is warranted because of the patient’s elevated potassium level. If diagnostic uncertainty remains after initial testing, renal allograft biopsy should be performed to establish a definitive diagnosis and guide treatment decisions (Haq & Mandelbrot, 2024).
- Differential Diagnosis Summary
Primary Diagnosis: Acute T-Cell Mediated Rejection
Acute T-cell-mediated rejection is the most likely diagnosis because the patient presents with a rapid decline in kidney function, oliguria, graft tenderness, hypertension, and recent interruption of immunosuppressive therapy. Nonadherence to immunosuppressive medications significantly increases the risk of acute rejection episodes and graft dysfunction (Zhi-Yu et al., 2024). The timing of presentation within the first year after transplantation also supports this diagnosis. The primary limitation is that histologic confirmation has not yet been obtained.
Differential Diagnosis 1: Antibody-Mediated Rejection
Antibody-mediated rejection remains a significant possibility because inadequate immunosuppression may lead to the development of donor-specific antibodies and subsequent graft injury. Supporting findings include worsening renal function and medication nonadherence. Evidence against this diagnosis includes the absence of donor-specific antibody testing results and lack of biopsy findings confirming antibody-mediated injury (Böhmig, 2025).
Differential Diagnosis 2: Transplant Renal Artery Stenosis
Transplant renal artery stenosis may present with hypertension and declining renal function. Supporting evidence includes severe hypertension and worsening kidney function. Evidence against this diagnosis includes graft tenderness, edema, and medication nonadherence, which are more consistent with rejection. Doppler ultrasonography would be helpful in excluding this condition.NRNP 6560 Week 3 Assignment: Musculoskeletal, Immunologic, Autoimmune, and Transplant-Related Disorders
Differential Diagnosis 3: Acute Tubular Injury
Acute tubular injury may occur secondary to ischemia, medication toxicity, or hemodynamic instability. Supporting findings include acute kidney injury and elevated serum creatinine. Evidence against this diagnosis includes the absence of hypotension, sepsis, or other clear precipitating factors. Furthermore, graft tenderness and recent medication nonadherence are more suggestive of rejection than isolated tubular injury.
- Focused Treatment Plan
The patient should be admitted to a monitored inpatient setting for urgent evaluation and management. Close monitoring of urine output, fluid balance, blood pressure, daily weight, renal function, and electrolyte levels is necessary. Hyperkalemia should be addressed immediately to reduce the risk of cardiac complications. Continuous cardiac monitoring should be initiated until potassium levels normalize. The transplant nephrology team should be consulted immediately. Immunosuppressive therapy should be reviewed, and missed medications should be restarted as clinically appropriate. Diagnostic testing should be expedited to determine the specific cause of allograft dysfunction. If biopsy findings confirm acute cellular rejection, high-dose intravenous methylprednisolone should be initiated. More severe rejection may require antithymocyte globulin therapy. If antibody-mediated rejection is identified, treatment may include plasmapheresis, intravenous immunoglobulin, rituximab, or other targeted therapies depending on biopsy findings and institutional protocols (Böhmig, 2025). Renal replacement therapy should be considered if refractory hyperkalemia, severe volume overload, or worsening renal failure develops.
- Escalation / Warning Signs
The patient requires immediate reassessment if urine output decreases further or complete anuria develops. Worsening hyperkalemia, especially if accompanied by electrocardiographic changes, requires urgent intervention because of the risk of fatal arrhythmias. Development of pulmonary edema, hypoxia, severe hypertension, confusion, chest pain, or signs of cardiovascular instability would indicate significant clinical deterioration. Rapid increases in serum creatinine despite treatment may suggest progressive graft injury and require urgent reassessment by the transplant team. Emergent dialysis should be considered if life-threatening electrolyte abnormalities or fluid overload occur.
- Social Determinants of Health (SDOH) Considerations
This case highlights several social and environmental factors that may negatively affect transplant outcomes. The patient relies on public transportation, which creates challenges in attending follow-up appointments and obtaining medications. Employment obligations make it difficult for him to miss work for medical visits. Living alone may reduce accountability and support for medication adherence. The patient also reports feeling overwhelmed by the complexity of his medication regimen and uncertain about the role of individual medications. These barriers likely contributed to missed appointments and interruption of immunosuppressive therapy. Interventions should include referral to social services, transportation assistance programs, transplant coordinator involvement, medication education, pharmacy synchronization services, and development of a simplified medication management plan to improve adherence and reduce future risk (Zhi-Yu et al., 2024).
- Patient Education
The patient should be educated that kidney transplant survival depends on consistent adherence to immunosuppressive medications. Missing even a few doses can trigger immune activation and irreversible graft damage. Education should focus on understanding the purpose of each medication, recognizing early signs of rejection, and maintaining regular follow-up appointments. The patient should be instructed to contact the transplant team immediately if medication refills become unavailable or if transportation issues interfere with appointments. Warning signs requiring immediate medical attention include reduced urine output, increasing swelling, fever, worsening fatigue, graft tenderness, elevated blood pressure, shortness of breath, or rapid weight gain. Ongoing communication with the transplant team and adherence to monitoring schedules are necessary to preserve long-term graft function.
References
Böhmig, G. A. (2025). Antibody-mediated rejection-treatment standard. Transplant International, 38, 14184. https://doi.org/10.1093/ndt/gfaf097
Haq, K., & Mandelbrot, D. A. (2024). Approach to kidney allograft dysfunction: A brief review. Advances in Chronic Kidney Disease, 31(5), 391–398. https://doi.org/10.1053/j.akdh.2024.06.002
Zhi-Yu, Z., Lin-Rui, D., Chen-Zhen, Y., Ren-Jie, C., Fei-Hong, Y., Song, C., & Wei-Jie, Z. (2024). Immunosuppressant nonadherence profile in kidney transplant recipients and the impact of medication adherence on transplant outcomes. Frontiers in Pharmacology, 15, 1493166. https://doi.org/10.3389/fphar.2024.1493166
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| NRNP_6560_Week3_Assignment_Rubric | ||
| Criteria | Ratings | Pts |
| This criterion is linked to a Learning OutcomeHPI Statement | 20 to >14.0 ptsProficientConstructs a concise, well organized HPI that demonstrates advanced synthesis and prioritization, clearly conveying acuity, progression, and key findings relevant to clinical decision making.
14 to >9.0 ptsCompetentPresents a clear HPI that includes most relevant history but demonstrates limited synthesis or prioritization, reducing clarity of acuity or clinical focus. 9 to >0 ptsNoviceProvides an unclear or poorly organized HPI that lacks synthesis, omits key information, or fails to frame the problem as an acute clinical concern. No HPI submitted = 0 points. |
20 pts |
| This criterion is linked to a Learning OutcomeDiagnostic Testing Plan | 10 to >8.0 ptsProficientProposes a focused, justified diagnostic plan that prioritizes severity, identifies complications, and informs management or escalation decisions.
8 to >6.0 ptsCompetentIdentifies appropriate diagnostics but provides limited justification or weaker linkage to acuity, complications, or clinical decision making. 6 to >0 ptsNoviceLists diagnostics with minimal rationale, inappropriate selection, or limited relevance to the acute clinical scenario. |
10 pts |
| This criterion is linked to a Learning OutcomeDifferential Diagnosis Summary | 20 to >14.0 ptsProficientPresents a prioritized differential diagnosis that clearly distinguishes among competing acute conditions using supporting and opposing case findings, demonstrating advanced clinical reasoning.
14 to >9.0 ptsCompetentIdentifies reasonable differential diagnoses but demonstrates limited prioritization or incomplete comparison of supporting and conflicting findings. 9 to >0 ptsNoviceDifferential diagnosis is poorly prioritized, unsupported by case data, or does not align with the patient’s clinical presentation. |
20 pts |
| This criterion is linked to a Learning OutcomeFocused Treatment Plan | 25 to >18.0 ptsProficientDevelops an evidence based, patient specific treatment plan appropriate for critical illness, demonstrating prioritization, monitoring, and anticipation of complications.
18 to >11.0 ptsCompetentOutlines a generally appropriate treatment plan but lacks depth, prioritization, or alignment with illness severity and disposition. 11 to >0 ptsNovicePresents an incomplete, poorly organized, or inappropriate treatment plan that does not reflect acute care standards. |
25 pts |
| This criterion is linked to a Learning OutcomeEscalation / Warning Signs | 10 to >8.0 ptsProficientIdentifies safety critical warning signs requiring escalation of care and clearly explains the rationale and appropriate response.
8 to >6.0 ptsCompetentIdentifies some relevant warning signs but provides limited rationale or lacks clarity regarding escalation actions. 6 to >0 ptsNovicewarning signs, escalations, or appropriate responses to clinical deterioration. |
10 pts |
| This criterion is linked to a Learning OutcomeSocial Determinants of Health Considerations | 5 to >4.0 ptsProficientAnalyzes case specific social determinants of health and clearly links them to clinical risk, management, or outcomes.
4 to >2.0 ptsCompetentIdentifies relevant social factors but provides limited application to clinical decision making or patient safety. 2 to >0 ptsNoviceProvides generic or inaccurate social determinants with minimal relevance to the case. |
5 pts |
| This criterion is linked to a Learning OutcomePatient Education | 5 to >4.0 ptsProficientProvides concise, high impact patient education appropriate for acute illness, emphasizing safety, warning signs, and prevention of recurrence.
4 to >2.0 ptsCompetentIncludes appropriate education but lacks focus, prioritization, or tailoring to the patient’s acuity. 2 to >0 ptsNoviceProvides incomplete, inaccurate, or non specific education inappropriate for the clinical scenario. |
5 pts |
| This criterion is linked to a Learning OutcomeUses evidence based practice (EBP) guidelines in treatment plan with 3 APA references. Must be within 5 years. | 5 to >4.0 ptsProficientguidelines in the treatment plan and includes 2 up to date references. APA formatting is correct.
4 to >2.0 ptsCompetentThere is use of EBP guidelines in the treatment plan. The treatment plan does not include 2 references, or the references are out of date. Few APA format errors. 2 to >0 ptsNoviceThere are no EBP guidelines used. The treatment plan does not include references. APA format is incorrect. |
5 pts |
Total Points: 100