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    Sustained dialysis with misplaced peritoneal dialysis catheter outside peritoneum: A case report

    2022-12-19 08:08:24QuanQuanShenTapasRanjanBeheraLiangLiangChenDoaaAttiaFeiHan
    World Journal of Clinical Cases 2022年19期

    Quan-Quan Shen,Tapas Ranjan Behera, Liang-Liang Chen, Doaa Attia,Fei Han

    Abstract

    Key Words: Peritoneal dialysis; Peritoneal cavity; Kidney; Case report

    lNTRODUCTlON

    Patients with renal dysfunction require renal replacement therapy that may include hemodialysis and peritoneal dialysis. In peritoneal dialysis (PD), the dialysate is introduced to the peritoneal cavity through the PD catheter, the tip of which stays positioned within in the peritoneal cavity for introduction and evacuation of the dialysate fluid. Though PD is a relatively safe procedure, there could be complications associated to its use. The complications of PD are commonly classified as infectious and noninfectious. Although infectious complications such as peritonitis leading to morbidity and mortality remain the main cause of PD failure[1], non-infectious causes also result in patient morbidity, which could be prevented by early recognition and management[2]. The various non-infectious complications are due to erroneous PD catheter insertion technique, failure to retain the catheter in the peritoneal cavity or a dialysate-induced rise in intra-abdominal pressure and the resulting metabolic effects. Here we report a case of a patient with end-stage renal disease undergoing PD without any incidence of significant deterioration over 4 years until he presented with inadequate small solute clearance as a complication of the misplaced extra-peritoneal catheter.

    CASE PRESENTATlON

    Chief complaints

    A 61-year-old man with end-stage renal disease undergoing PD was referred to our hospital with progressive nausea and fatigue for 3 mo.

    History of present illness

    The patient had developed renal failure secondary to uric acid nephropathy and was implanted with straight catheter with double polyester cuff. He was undergoing PD for 4 years. He had been undergoing continuous ambulatory PD with 3 exchanges per day; one with 1.5% solution and the remaining two with 2.5% solution, thereby achieving around 500 mL of peritoneal ultrafiltrate.

    History of past illness

    Other than the uric acid nephropathy, the patient had chronic hypertension.

    Personal and family history

    There was no family history of renal failure or any relevant nephropathy in the family.

    Physical examination

    On admission, physical examination showed a tense distended abdomen without signs of edema in the perineum or lower extremities (Figure 1).

    Laboratory examinations

    Laboratory assessment revealed severe anemia in the patient, with blood urea nitrogen 19.66 mmol/L, serum creatinine 884 μmol/L, uric acid 611 μmol/L, albumin 21.2 g/L, calcium 2.03 mmol/L, phosphate 2.10 mmol/L and parathyroid hormone level of 204 pmol/L. Peritoneal equilibration test determined his 4-hour equilibration between dialysate and plasma creatine to be 0.571, classifying him as a lowaverage transporter. The peritoneal dialysis adequacy parameters measured 5 mo prior to hospitalization as peritoneal kt/Vurea and dialysis creatinine clearance were 1.314 and 42.706 L/wk, respectively; the renal kt/Vurea and creatinine clearance at that time were 0.22 and 8.741 L/wk, respectively.

    Imaging examinations

    Imaging studies were performed to evaluate anatomical etiology. The abdominal plain film showed the tip of peritoneal catheter positioned in the true pelvis (Figure 2). The abdominal computed tomography confirmed the peritoneal dialysis catheter and the dialysis fluid to be outside the abdominal cavity (Figure 3).

    FlNAL DlAGNOSlS

    Misplaced PD catheter tip was identified to be the reason of his deteriorating dialysis efficacy leading to his presentation.

    TREATMENT

    In view of the worsening health condition due to poor dialysis outcome, the PD solution was drained, and the catheter was removed, transferring the patient to hemodialysis mode of renal replacement therapy.

    OUTCOME AND FOLLOW-UP

    The patient’s laboratory parameters and symptoms improved after the hemodialysis. The patient was followed up for surgical creation of fistula for future hemodialysis, which was continued at the local hospital.

    DlSCUSSlON

    Techniques for PD catheter insertion include placement by percutaneous needle-guidewire with or without image guidance, open surgical dissection, peritoneoscopic and laparoscopic implantation[3]. Irrespective of catheter insertion approach, the placement of catheter entry inside the peritoneal cavity must always be confirmed. The small pelvis below the pelvic brim is the ideal site for catheter tip location; positioning of the tip outside of this is considered a malposition of PD catheter, which has been attributed to contribute to catheter dysfunction. Several techniques of catheter insertion have been investigated including catheter tip fixation, in order to prevent its migration[4].

    The catheter insertion in this patient was done by open dissection as evidenced by the surgical scar of the vertical paramedian incision (Figure 1). The catheter was located in the pelvis; however, the catheter tip was outside the peritoneal cavity. Despite the unintended location of the dialysis catheter over a period of 4 years of ongoing PD, the patient did not develop perineal or scrotal edema nor did the dialysate enter into the abdominal muscle. This could be possible if the catheter entered through the posterior rectus sheath and transversalis fascia without passing through the peritoneum, thus the catheter tip was located between the transversalis fascia and peritoneum. Another possible explanation of the position of the catheter tip could be catheter extrusion from its normal position.

    PD relies on the use of the peritoneum as a semipermeable membrane for the exchange of solutes and water. The host-related factors, including peritoneal membrane surface area and peritoneal blood flow, influence transcapillary movement of solute and water[5]. In this case the patient remained sustainable through the PD for a prolonged period due to the residual renal reserves until the limited effective surface area of the peritoneum could not support adequate dialysis. The low PD adequacy parameters along with the worsening health condition prompted imaging to detect PD catheter failure. In patients not achieving the minimal delivered clearance goal, it is reasonable to ensure that the PD catheter is located within the peritoneal cavity.

    Figure 1 External view of the abdomen. Surgical scar of vertical paramedian incision (orange arrow) and peritoneal dialysis catheter (white arrow).

    Figure 2 Abdominal plain film showing the tip of peritoneal dialysis catheter (arrow) located in the true pelvis.

    CONCLUSlON

    This is the first case report describing a sustained PD for over 4 years with a misplaced extra-PD catheter in a patient undergoing PD. The unique location of the catheter tip between the peritoneum and transversalis fascia prevented early complication of dialysate migration into the muscle causing edema while allowing filtration through the available peritoneal surface area. To prevent complications of PD it is important to confirm and re-check when necessary the placement of catheter tip inside the peritoneal cavity.

    Figure 3 Longitudinal abdominal computed tomography showing peritoneal dialysis fluid and catheter (arrow) to be outside the

    abdominal cavity.PDF: Peritoneal dialysis fluid.

    FOOTNOTES

    Author contributions:Shen QQ and Behera TR drafted the manuscript; Chen LL and Attia D conducted the literature review; Han F, Behera TR and Attia D revised the manuscript; All authors have read and approved the final manuscript.

    Supported byNational Natural Science Foundation of China, No. 81900692.

    lnformed consent statement:Informed written consent was obtained from the patient for publication of this report and the accompanying images.

    Conflict-of-interest statement:The authors declare to have no conflict of interest.

    CARE Checklist (2016) statement:The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).

    Open-Access:This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BYNC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is noncommercial. See: https://creativecommons.org/Licenses/by-nc/4.0/

    Country/Territory of origin:United States

    ORClD number:Tapas Ranjan Behera 0000-0001-7595-7841; Liang-Liang Chen 0000-0003-2102-3300; Doaa Attia 0000-0002-1686-9072; Fei Han 0000-0001-5363-7556.

    S-Editor:Liu JH

    L-Editor:Filipodia

    P-Editor:Liu JH

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