# A nurse is caring for a 50-year-old client who received a kidney transplant 1 year ago and is compliant with immunosuppressive therapy (tacrolimus, mycophenolate, prednisone). Which assessment finding would be the MOST concerning and require immediate intervention?

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> subject: Adult Health

## 문제

A nurse is caring for a 50-year-old client who received a kidney transplant 1 year ago and is compliant with immunosuppressive therapy (tacrolimus, mycophenolate, prednisone). Which assessment finding would be the MOST concerning and require immediate intervention?

A 45-year-old client who underwent kidney transplantation 6 months ago presents to the clinic for routine follow-up. The client has been compliant with immunosuppressive therapy including tacrolimus, mycophenolate, and prednisone.

## 보기

1. Blood pressure of 150/90 mmHg
2. Serum creatinine increased from 1.2 mg/dL to 1.8 mg/dL over the past month
3. White blood cell count of 3,500/mm³
4. Fever of 101.5°F (38.6°C) with productive cough and shortness of breath **✔ 정답**

**정답: 4**

## 해설

Fever with respiratory symptoms in an immunocompromised transplant recipient indicates a life-threatening infection requiring immediate intervention. Other findings (e.g., BP, creatinine) are concerning but less urgent.

## 심화 해설

Understanding the Clinical Scenario

This client is 6 months post-kidney transplant and is on a standard triple immunosuppressive regimen consisting of tacrolimus (a calcineurin inhibitor), mycophenolate (an antimetabolite), and prednisone (a corticosteroid). The core nursing responsibility in this population is balancing the risk of organ rejection against the risk of severe infection. Immunosuppressive medications, while essential for graft survival, blunt the immune system's ability to mount an effective response against pathogens, making infections the most common and dangerous acute complication.

Analysis of Assessment Findings

Option 1: Blood pressure of 150/90 mmHg

Hypertension is a very common finding in post-transplant patients, often exacerbated by the vasoconstrictive effects of tacrolimus and the mineralocorticoid effects of prednisone. While this blood pressure reading is elevated and requires ongoing management and medication adjustment, it represents a chronic, modifiable risk factor for cardiovascular disease and graft dysfunction. It does not constitute an immediate, life-threatening emergency in the acute setting compared to an active infection.

Option 2: Serum creatinine increased from 1.2 mg/dL to 1.8 mg/dL over the past month

A rise in serum creatinine is a hallmark sign of acute kidney injury, which in a transplant patient raises a critical concern for acute graft rejection. The gradual onset over one month is suggestive of a subacute process. While this finding is highly concerning and demands urgent diagnostic workup (such as a renal biopsy and tacrolimus trough level check), the immediate threat to life is less acute than a rapidly progressive systemic infection. Rejection is a process that can often be reversed with prompt medical intervention over hours to days.

Option 3: White blood cell count of 3,500/mm³

Leukopenia is an expected pharmacological effect of mycophenolate, which inhibits inosine monophosphate dehydrogenase, a pathway critical for lymphocyte proliferation. A WBC count of 3,500/mm³ indicates bone marrow suppression but is a common and often managed finding. It increases the client's susceptibility to infection, making the assessment in Option 4 even more critical. The leukopenia itself is a risk factor, not the immediate event requiring intervention.

Option 4: Fever of 101.5°F (38.6°C) with productive cough and shortness of breath

This is the most concerning finding. The combination of fever, a productive cough, and shortness of breath is a classic triad for an acute lower respiratory tract infection, specifically pneumonia. In an immunosuppressed host, this presentation is a medical emergency. The blunted inflammatory response means the patient can deteriorate rapidly from a localized infection to systemic sepsis and acute respiratory failure. The productive cough indicates a pyogenic bacterial process or a severe viral pneumonitis that has caused mucosal damage. As highlighted in the case report by Zhang et al., even common coronaviruses like HCoV-OC43 can cause severe, progressive pneumonia in immunocompromised hosts post-transplantation, requiring aggressive antiviral therapy . The immediate nursing priority is to initiate a septic workup (blood cultures, sputum culture, chest X-ray), implement airborne and droplet precautions, and administer empiric broad-spectrum antimicrobials without delay. The risk of rapid decompensation from respiratory pathogens in the setting of iatrogenic immunosuppression makes this the finding that requires the most immediate intervention.

## 임상 시나리오

Clinical Case: Post-Transplant Fever & Respiratory Distress

**Scenario:** A 45-year-old client, 6 months post-kidney transplant on tacrolimus, mycophenolate, and prednisone, presents with a fever of 101.5°F (38.6°C), productive cough, and shortness of breath.

Immediate Nursing Actions

- **Airway and Breathing:** Assess respiratory rate, oxygen saturation, and breath sounds. Apply supplemental oxygen to maintain SpO2 > 92%.

- **Isolation:** Implement droplet/airborne precautions immediately due to high risk of infectious pneumonia (bacterial, viral, fungal).

- **Notify Provider:** Report findings urgently; anticipate orders for chest X-ray, blood cultures, sputum cultures, and empiric broad-spectrum antibiotics.

- **Hemodynamic Monitoring:** Monitor for signs of sepsis (hypotension, tachycardia, altered mental status).

Key Clinical Reasoning

In immunosuppressed transplant recipients, fever with productive cough and dyspnea is a medical emergency indicating a potentially life-threatening infection. The suppressed immune response can mask typical signs of infection, making any fever a red flag. Rapid deterioration is possible, so immediate intervention takes priority over managing chronic issues like hypertension or a gradual creatinine rise, which can be addressed concurrently but are not the immediate threat.

Nursing Priorities

- Ensure adequate oxygenation and airway patency.

- Obtain cultures and initiate antimicrobial therapy as prescribed.

- Maintain strict infection control to protect the client.

- Continue immunosuppressive therapy unless otherwise directed by the transplant team, as abrupt cessation can precipitate acute rejection.

## 핵심 개념

- **Immunosuppressive Therapy** — A regimen including tacrolimus, mycophenolate, and prednisone used to prevent organ rejection by suppressing the immune system, thereby increasing susceptibility to infections.
- **Tacrolimus** — A calcineurin inhibitor that suppresses T-cell activation but can cause nephrotoxicity and hypertension.
- **Mycophenolate** — An antimetabolite that inhibits B and T lymphocyte proliferation, commonly causing leukopenia as a side effect.
- **Graft Rejection** — An immune response against the transplanted organ, often indicated by a rise in serum creatinine, requiring prompt but not always immediate intervention.
- **Opportunistic Infection** — An infection caused by pathogens that take advantage of a weakened immune system, representing the most common acute danger in transplant recipients.

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