Complications of Peritoneal Dialysis

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?

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

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.

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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

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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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