# A nurse is caring for a client who has been receiving peritoneal dialysis for 6 months. During the assessment, which 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 has been receiving peritoneal dialysis for 6 months. During the assessment, which finding would be the most concerning and require immediate intervention?

## 보기

1. Cloudy dialysate return with mild abdominal discomfort
2. Exit site redness with purulent drainage
3. Severe abdominal pain with rigid abdomen and fever of 102°F (38.9°C) **✔ 정답**
4. Decreased ultrafiltration with clear dialysate return

**정답: 3**

## 해설

Severe abdominal pain with rigid abdomen and high fever indicates peritonitis, a life-threatening complication requiring immediate intervention. Other findings like cloudy dialysate or exit site infection are concerning but less urgent.

## 심화 해설

Clinical Reasoning Analysis

The most concerning finding requiring immediate intervention is severe abdominal pain with a rigid abdomen and fever of 102°F (38.9°C). This clinical picture is a classic presentation of an acute surgical abdomen, most likely indicating bowel perforation with secondary peritonitis. In a client undergoing long-term peritoneal dialysis (PD), this represents a life-threatening emergency.

The pathophysiology underlying this critical finding involves the mechanical interaction between the PD catheter and the gastrointestinal tract. While peritonitis is a known infectious complication of PD, the presentation of a rigid, board-like abdomen with severe pain shifts the differential diagnosis from simple bacterial peritonitis to a visceral catastrophe. The provided case report by Afshan et al. highlights a rare but documented mechanism: the migrating tip of a dormant or malpositioned PD catheter can erode into the bowel wall, specifically the sigmoid colon, causing a perforation [1]. The rigid abdomen is a direct result of fecal contamination spilling into the sterile peritoneal cavity, triggering intense chemical and bacterial inflammation. The high fever reflects the systemic inflammatory response to this contamination.

It is critical to distinguish this from other findings in the answer options. Cloudy dialysate with mild abdominal discomfort (Option 1) is the hallmark of standard bacterial peritonitis, a serious but usually less immediately catastrophic condition managed initially with intraperitoneal antibiotics. Exit site redness with purulent drainage (Option 2) indicates an exit-site or tunnel infection, which requires prompt treatment to prevent progression but does not constitute an immediate, life-threatening surgical emergency. Decreased ultrafiltration with clear dialysate (Option 4) suggests membrane failure or catheter malposition, a chronic complication requiring eventual management but not immediate intervention. The unique combination of a rigid abdomen, severe pain, and high fever in Option 3 points directly to a perforated viscus, a complication where the patient can rapidly deteriorate from sepsis and requires emergent surgical exploration and repair [1].References (research sources)

- [1]A Rare Complication of Peritoneal Dialysis (PD) Catheter: Perforation of Sigmoid Colon by Migrating Tip of Peritoneal Dialysis Catheter.Research articleAfshan S, Earl TM, Anderson CD, Dixit M. (2020) · DOI: 10.12659/ajcr.922828

## 임상 시나리오

Peritoneal Dialysis: Recognizing the Acute AbdomenDistinguishing medical peritonitis from surgical emergency
The most critical emergency in a long-term PD patient is a bowel perforation. A rigid, board-like abdomen with severe pain and high fever (102°F / 38.9°C) is a classic presentation of an acute surgical abdomen, not simple peritonitis.

Standard bacterial peritonitis typically presents with cloudy dialysate and mild to moderate discomfort. The presence of a rigid abdomen indicates fecal or chemical contamination from a visceral perforation, triggering intense inflammation.

CautionImmediately notify the provider and prepare for emergency surgical intervention. Do not delay by treating this as a standard PD-related infection. A dormant or malpositioned PD catheter tip can erode into the bowel wall.

## 핵심 개념

- **Peritonitis** — Inflammation of the peritoneum, often due to infection, presenting with cloudy dialysate, abdominal pain, and fever.
- **Bowel Perforation** — A hole in the wall of the gastrointestinal tract causing spillage of contents into the sterile peritoneal cavity, leading to an acute surgical abdomen.
- **Acute Surgical Abdomen** — A clinical condition characterized by sudden, severe abdominal pain and rigidity, requiring emergency surgical evaluation and intervention.
- **Rigid Abdomen** — Involuntary tensing of the abdominal wall muscles, a classic sign of peritoneal irritation and a hallmark of an acute surgical emergency.
- **Ultrafiltration** — The process of removing excess fluid from the blood during dialysis by using a pressure gradient across the peritoneal membrane.

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