# A nurse is caring for a client who received a kidney transplant 3 months ago. 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 client who received a kidney transplant 3 months ago. Which assessment finding would be the MOST concerning and require immediate intervention?

## 보기

1. Temperature of 101.2°F (38.4°C) with productive cough and shortness of breath **✔ 정답**
2. Blood pressure of 150/90 mmHg with mild peripheral edema
3. Serum creatinine level increased from 1.2 to 1.8 mg/dL over the past week
4. White blood cell count of 3,500/mm³ with no other symptoms

**정답: 1**

## 해설

Fever with respiratory symptoms in an immunosuppressed post-transplant patient indicates a life-threatening infection requiring immediate intervention. Other findings (hypertension, elevated creatinine, leukopenia) are concerning but less urgent.

## 심화 해설

Clinical Reasoning Analysis

This question tests your ability to prioritize assessment findings in an immunocompromised client. The client is 3 months post-kidney transplant, a period of intense immunosuppression where the risk of opportunistic infection is highest. The core task is to distinguish between expected side effects of immunosuppression, signs of graft dysfunction, and a life-threatening emergency.

Understanding the Priority: Infection vs. Other Complications

In the post-transplant period, the therapeutic immunosuppression required to prevent organ rejection creates a state of profound vulnerability to infections. These infections are often caused by atypical or opportunistic pathogens and can progress rapidly from subtle symptoms to sepsis and respiratory failure. Therefore, any sign of a systemic infection, particularly with respiratory involvement, takes precedence over other concerns like mild hypertension or a moderate creatinine rise, which can often be managed with less immediate urgency.

Analysis of Each Option

Option 1: Temperature of 101.2°F (38.4°C) with productive cough and shortness of breath.

This is the most concerning finding. A fever in an immunosuppressed kidney transplant recipient is a major red flag for a serious, life-threatening opportunistic infection. The combination of fever, productive cough, and shortness of breath points directly to a pulmonary infection, which is a leading cause of critical illness in this population. The provided sources confirm that kidney transplant recipients are at high risk for aggressive pulmonary infections from organisms like Nocardia, Legionella pneumophila, and Pneumocystis jirovecii [1,3,4]. These pathogens can cause severe, cavitary, or disseminated pneumonia, and delayed treatment significantly increases mortality [1,2]. This presentation signals a potential respiratory emergency requiring immediate diagnostic workup (chest imaging, cultures, metagenomic next-generation sequencing) and empiric antimicrobial therapy [1,3].

Option 2: Blood pressure of 150/90 mmHg with mild peripheral edema.

While hypertension and edema are common post-transplant complications often related to immunosuppressant medications (like calcineurin inhibitors) or graft dysfunction, they do not represent an immediate, life-threatening crisis. This finding requires intervention and medication adjustment, but it is not the priority over a potential fulminant infection.

Option 3: Serum creatinine level increased from 1.2 to 1.8 mg/dL over the past week.

An acute rise in serum creatinine is a critical indicator of possible acute kidney injury or acute graft rejection. This finding is highly significant and demands prompt investigation and management. However, from a prioritization standpoint, a systemic infection with respiratory distress can decompensate into a fatal event more rapidly than a creatinine rise of this magnitude. Sepsis can also be the underlying cause of the acute kidney injury, making the infectious symptoms the primary problem to address first.

Option 4: White blood cell count of 3,500/mm³ with no other symptoms.

Leukopenia is an expected effect of many immunosuppressive and antimicrobial prophylactic regimens used in transplant recipients. For instance, trimethoprim-sulfamethoxazole, the first-line agent for Pneumocystis jirovecii pneumonia prophylaxis, is known to cause bone marrow suppression [4]. In the absence of any clinical signs of infection, this isolated laboratory value, while requiring monitoring, does not constitute an immediate emergency.

The Critical Link: Immunosuppression and Opportunistic Pulmonary Infections

The rationale for Option 1 being the priority is deeply rooted in the pathophysiology of post-transplant care. The referenced case reports illustrate a clear pattern: kidney transplant recipients, due to potent immunosuppressive drugs, are susceptible to uncommon but devastating pulmonary infections [1,2,3,4]. Nocardia infection, for example, is a Gram-positive aerobic actinomycete that can cause severe pulmonary or disseminated disease via airborne transmission, often presenting with fever and respiratory symptoms [1,2]. Similarly, Legionella can cause cavitary pneumonia, and Pneumocystis jirovecii can lead to fatal pneumonia, especially if prophylaxis has been discontinued or during periods of intensified immunosuppression [3,4]. A nurse's immediate recognition of fever and respiratory distress as the highest-priority cue is essential to trigger the rapid response necessary to prevent rapid clinical deterioration from these aggressive infections [1,2].References (research sources)

- [4]Intravenous trimethoprim-sulfamethoxazole desensitization as a therapeutic strategy for late-onset Pneumocystis jirovecii pneumonia in a kidney transplant recipient: a case report.Case reportYılmaz B. (2026) · DOI: 10.1186/s13256-026-05849-8

## 임상 시나리오

Post-Transplant Infection TriageImmediate action for febrile respiratory symptoms
In a kidney transplant recipient 3 months post-op, a fever of 101.2°F (38.4°C) with a productive cough and shortness of breath is a life-threatening emergency. This presentation strongly suggests a severe opportunistic pulmonary infection.

Immediate nursing actions include isolating the patient, administering oxygen to maintain SpO2 above 92%, obtaining blood and sputum cultures, and notifying the transplant team and rapid response team. A chest X-ray and initiation of broad-spectrum antibiotics are urgent priorities.

CautionDo not delay intervention for a full workup. In immunosuppressed patients, clinical deterioration from respiratory infection can be rapid and fatal. A low white blood cell count is an expected drug effect and does not rule out severe infection.

## 핵심 개념

- **Opportunistic Infection** — An infection caused by pathogens that take advantage of a weakened immune system, such as in a post-transplant patient on immunosuppressants.
- **Immunosuppression** — Therapeutic reduction of the immune system's activity to prevent organ rejection, which increases susceptibility to infections.
- **Graft Dysfunction** — Impaired function of a transplanted organ, often indicated by rising serum creatinine levels in kidney recipients.
- **Leukopenia** — A decrease in white blood cells, a common side effect of immunosuppressive drugs like mycophenolate mofetil or tacrolimus.

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