Three purse-string sutures allow immediate start of peritoneal dialysis with a low incidence of leakage

Safety of a 24-h-or-less break-in period in elderly patients undergoing urgent-start peritoneal dialysis: A multicenter retrospective cohort study

BACKGROUND

Several elderly patients with end-stage renal disease (ESRD) had to undergo urgent-start peritoneal dialysis (USPD). This study aimed to determine whether break-in period (BI) within 24 h was feasible in elderly patients undergoing USPD.

METHODS

Patients with ESRD who underwent PD at five hospitals were screened. Patients were divided into the BI ≤24 h and >24 h groups. Complications were compared between the two groups. Multivariate logistic regression model was used to determine whether BI ≤24 h was associated with complications.

RESULTS

A total of 175 elderly patients were included: BI ≤24 h group, 78; and BI >24 h group, 97. There was no significant difference in the rate of complications between the two groups (all p > 0.05). Furthermore, BI ≤24 h was not an independent risk factor for complications (all p > 0.05).

CONCLUSIONS

Starting PD within 24 h after PD catheter insertion was feasible in elderly ESRD patients.

Analysis of mechanical complications in urgent-start peritoneal dialysis

BACKGROUND

Peritoneal dialysis (PD) is an excellent, but underutilized dialysis technique. Thus, its implementation may depend also on the chance to offer this modality of treatment to patients referred late to the nephologists. This approach has recently been named "urgent-start peritoneal dialysis" (UPD). The main barrier to this practice is represented by the fear of early mechanical complications.

METHODS

All prevalent patients needing urgent-start PD at our institution between 1 January, 2009 and 31 December, 2019 were included in the study. During this period, 242 peritoneal catheters were inserted in 222 patients. In all patients, an anti-leakage/dislocation suture was made. PD was started within 24 h from catheter placement.

RESULTS

The early incidence of leakages, catheter dislocations, omental wrappings, bleedings, peritonitis and exit-site infections was 11/242 (4.5%), 5/242 (2%), 3/242 (1.2%), 2/242 (0.8%), 6/242 (2.5%) and 4/242 (1.6%), respectively. No bowel perforations were observed. Nearly one third of the late complications (13/45; 35.2%) resulted in discontinuation of PD, while one fourth (11/45; 24.4%) required surgical revision. The remaining episodes (21/45; 46.6%) were successfully managed by a conservative approach. The survival of the catheter at 3, 6, 12, 24, 36 and 48 months was 93.6, 91.2, 84.8, 77.4, 65.5 and 59.3%, respectively. The technique survival at 3, 6, 12, 24, 36 and 48 months was 97.2, 94.9, 87.6, 78.9, 66.6 and 60.0%, respectively. The main causes of PD drop-out included infectious complications (36.8%) followed by mechanical complications (17.5%).

CONCLUSIONS

A tight seal between deep cuff and surrounding tissues (double purse-string technique) in association with a starting low-volume exchange scheme allows to minimize early and late mechanical complication in UPD.

Outcome and Safety of Unplanned-Start Peritoneal Dialysis according to Break-In Periods: A Systematic Review and Meta-Analysis

INTRODUCTION

The best timing of peritoneal dialysis (PD) initiation after catheter implantation is still controversial. It is necessary to explore whether there exists a waiting period to minimize the risk of complications.

METHODS

A systematic review and meta-analysis were searched in multiple electronic databases published from inception to February 29, 2020, to identify cohort studies for evaluating the outcome and safety of unplanned-start PD (<14 days after catheter insertion). Risks of bias across studies were evaluated using Newcastle-Ottawa Quality Assessment Scale.

RESULTS

Fourteen cohort studies with a total of 2,401 patients were enrolled. We found that early-start PD was associated with higher prevalence of leaks (RR: 2.67, 95% CI, 1.55-4.61) and omental wrap (RR: 3.28, 95% CI, 1.14-9.39). Furthermore, patients of unplanned-start PD in APD group have higher risk of leaks, while those in CAPD group have a higher risk of leaks, omental wrap, and catheter malposition. In shorter break-in period (BI) group, the risk of suffering from catheter obstruction and malposition was higher for patients who started dialysis within 7 days after the surgery than for patients within 7-14 days. No significant differences were found in peritonitis (RR: 1.00; 95% CI, 0.78-1.27) and exit-site infections (RR: 1.12; 95% CI, 0.72-1.75). However, shorter BI was associated with higher risk of mortality and transition to hemodialysis (HD) while worsen early technical survival, with pooled RR of 2.14 (95% CI, 1.52-3.02), 1.42 (95% CI, 1.09-1.85) and 0.95 (95% CI, 0.92-0.99), respectively.

CONCLUSIONS

Evidence suggests that patients receiving unplanned-start PD may have higher risks of mechanical complications, transition to HD, and even mortality rate while worsening early technical survival, which may not be associated with infectious complications. Rigorous studies are required to be performed.

How To Build a Successful Urgent-Start Peritoneal Dialysis Program

In-center hemodialysis (HD) remains the predominant dialysis therapy in patients with ESKD. Many patients with ESKD present in late stage, requiring urgent dialysis initiation, and the majority start HD with central venous catheters (CVCs), which are associated with poor outcomes and high cost of care. Peritoneal dialysis (PD) catheters can be safely placed in such patients with late-presenting ESKD, obviating the need for CVCs. PD can begin almost immediately in the recumbent position, using low fill volumes. Such PD initiations, commencing within 2 weeks of the catheter placement, are termed urgent-start PD (USPD). Most patients with an intact peritoneal cavity and stable home situation are eligible for USPD. Although there is a small risk of PD catheter–related mechanical complications, most can be managed conservatively. Moreover, overall outcomes of USPD are comparable to those with planned PD initiations, in contrast to the high rate of catheter-related infections and bacteremia associated with urgent-start HD. The ongoing coronavirus disease 2019 pandemic has further exposed the vulnerability of patients with ESKD getting in-center HD. PD can mitigate the risk of infection by reducing environmental exposure to the virus. Thus, USPD is a safe and cost-effective option for unplanned dialysis initiation in patients with late-presenting ESKD. To develop a successful USPD program, a strong infrastructure with clear pathways is essential. Coordination of care between nephrologists, surgeons or interventionalists, and hospital and PD center staff is imperative so that patient education, home visits, PD catheter placements, and urgent PD initiations are accomplished expeditiously. Implementation of urgent-start PD will help to increase PD use, reduce cost, and improve patient outcomes, and will be a step forward in fostering the goal set by the Advancing American Kidney Health initiative.

Urgent-start peritoneal dialysis: is it ready for prime time?

PURPOSE OF REVIEW

This review aims to provide an up-to-date summary of the definition, current practice and evidence regarding the role of urgent-start peritoneal dialysis (USPD) in patients with end-stage kidney disease who present with unplanned dialysis requirement without functional access.

RECENT FINDINGS

USPD can be broadly defined as peritoneal dialysis initiation within the first 2 weeks after catheter insertion. Published practice patterns, in terms of catheter insertion approach, peritoneal dialysis initiation time or initial fill volume, are highly variable. Most evidence comes from small, retrospective, single-center observational studies and only one randomized controlled trial. Compared with conventional-start peritoneal dialysis, USPD appears to moderately increase the risk of mechanical complications, such as dialysate leak (relative risk 3.21, 95% confidence interval 1.73-5.95), but does not appear to adversely affect technique or patient survival. USPD may also reduce the risk of bacteremia compared with urgent-start hemodialysis delivered by central venous catheter (CVC).

SUMMARY

USPD represents an important opportunity to establish patients with urgent, unplanned dialysis requirements on a cost-effective, home-based dialysis modality with lower serious infection risks than the alternative option of hemodialysis via CVC. Robust, well executed trials are required to better inform optimal practice and safeguard patient-centered and patient-reported outcomes.

When end-stage kidney disease complicates abdominal surgery

Patients receiving peritoneal dialysis (PD) encounter an increased risk for infection, bleeding, and PD fluid leakage after abdominal surgery. These complications may affect the future use of PD. Appropriate patient preparation may mitigate complications. Certain complications or procedures allow patients to remain on PD while others require transition to hemodialysis. We review the etiology and management of infection, bleeding, and PD fluid leakage associated with abdominal surgery as well as the relationship of specific abdominal procedures to continuing PD.

Double purse-string around the inner cuff of the peritoneal catheter: A novel technique for an immediate initiation of continuous peritoneal dialysis

International guidelines recommended a delayed start of peritoneal dialysis at least 2 weeks between catheter insertion and continuous peritoneal dialysis therapy initiation (break-in period). Up to now, the optimal duration of the break-in period is still unclear. The aim of our study was to evaluate in patients, with immediate initiation of continuous peritoneal dialysis, the efficacy of a double purse-string around the inner cuff in preventing mechanical and infectious complications either in semi-surgical or surgical catheter implantation. From January 2011 to December 2018, 135 peritoneal dialysis catheter insertions in 125 patients (90 men and 35 women, mean age 62.02 ± 16.7) were performed. Seventy-seven straight double-cuffed Tenckhoff catheters were implanted semi-surgically on midline under the umbilicus by a trocar, and 58 were surgically implanted through the rectus muscle. In all patients, continuous peritoneal dialysis was started immediately after catheter placement. Mechanical and infectious catheter-related complications during the first 3 months after initiation of continuous peritoneal dialysis were recorded. The overall incidence of leakages, catheter dislocations, peritonitis, and exit-site infections was 4/135 (2.96%), 2/135 (1.48%), 14/135 (10.3%), and 4/135 (2.96%), respectively. Regarding the incidence of catheter-related complications, no bleeding events, bowel perforations, or hernia formations were observed with either the semi-surgical or surgical technique. Double purse-string technique around the inner cuff allows an immediate start of continuous peritoneal dialysis both with semi-surgical and surgical catheter implantation. This technique is a safe and feasible approach in patients needing an urgent peritoneal dialysis.

Effects of prophylactic antibiotics before peritoneal dialysis catheter implantation on the clinical outcomes of peritoneal dialysis patients

BACKGROUND

Peritoneal dialysis (PD) related infections, such as peritonitis, are still the main obstacle for the development of PD. Prophylactic antibiotic as one of the interventions to prevent early peritonitis was recommended to use before PD catheter insertion by International Society for Peritoneal Dialysis (ISPD) guidelines, In our hospital, however, since 2012, the prophylactic antibiotics for insertion of PD catheters were not allowed to use because of our hospital's regulation. In order to analyze the outcomes of PD patients without using prophylactic antibiotics before the PD catheter insertion, we compared the PD patients with or without prophylactic antibiotics before PD catheter insertion.

METHODS

This retrospective study included 247 patients undergoing permanent PD catheter placement with conventional open surgical method consecutively between February 2008 and June 2013. Of these, 154 patients were given intravenous cefazolin, 1.0 g, 0.5-2 h before the procedure (antibiotic group) and 93 patients were not given prophylactic antibiotics (nonantibiotic group). All the patients were administered intermittent PD within 24 h after PD catheter insertion. The early complications and long-term outcomes were recorded respectively.

RESULTS

There was no significant difference in the incidence of peritonitis and exit-site/tunnel infection and mechanical complications between the two groups in the first 30 days after the PD catheter implantation. In addition, after 6 years of follow-up, no difference was seen between the two groups in patient survival, technique survival, and peritonitis-free survival.

CONCLUSIONS

Our study does not show any beneficial effect of antibiotic prophylaxis in reducing the postoperative peritonitis.

Efficacy of APD in perioperative period of non-abdominal operation for peritoneal dialysis patients

Objectives: Whether automated peritoneal dialysis (APD) is a feasible strategy in perioperative period of uremic patients undergoing nonabdominal surgery remains unclear. This study was conducted to research the perioperative management and the best choice of dialysis modalities for peritoneal dialysis patients.

Materials and methods: A retrospective analysis was made on the clinical data of 58 ESRD patients who had received peritoneal dialysis for more than three months were treated with APD during perioperative period from July 2015 to March 2018 in the Second Affiliated Hospital of Soochow University. The differences of clinical parameters, such as urine volume, ultrafiltration volume, hemoglobin, renal function and electrolytes were collected and analyzed before and after APD.

Results: The vital signs of 58 patients were stable after APD treatment, and there were no significant differences in 24-hour urine volume, hemoglobin and electrolytes (calcium, phosphorus, potassium, sodium) before and after surgery (P>0.05). Compared with those before treatment, the amount of ultrafiltration increased significantly (P<0.05), creatinine, urea nitrogen and parathyroid hormone decreased significantly (P<0.05), while albumin decreased (P<0.05).

Conclusion: Application of APD for peritoneal dialysis patients undergoing nonabdominal surgery during the perioperative period is safe and effective.

Application of automated peritoneal dialysis in urgent-start peritoneal dialysis patients during the break-in period

Objective

Whether automated peritoneal dialysis (APD) is a feasible strategy for urgent-start peritoneal dialysis (PD) therapy during the break-in period remains unclear. This study was conducted to compare the efficacy as well as complications among three PD modes during the break-in period.

Methods

Ninety-six patients treated with urgent-start PD after catheterization were retrospectively analyzed. Patients were divided into three groups, incremental continuous ambulatory PD (CAPD) group (n = 26); APD group (n = 42); and APD–CAPD group (n = 28). Clinical parameters at the end of the break-in period and 1 month after the initiation of PD treatment were collected and analyzed.

Results

Compared with the traditional incremental CAPD, APD and APD–CAPD were superior as they could effectively remove small-molecule uremic toxins and correct electrolyte imbalance (P < 0.05), while did not increase the incidence of early complications during the break-in period (P > 0.05). However, APD led to a significant decline in albumin and pre-albumin, as compared with APD–CAPD and CAPD (P < 0.05). A PD strategy consisting 6 days of APD and 3 days of CAPD showed a great advantage in preventing excessive protein loss. There were no significant differences in all tested biochemical parameters among the three groups at 1 month after treatment (all P > 0.05).

Conclusion

Application of APD for urgent-start PD during the break-in period is feasible. A combination of APD and CAPD regimens seems to be a more reasonable mode.

Few Outflow Problems With a Self-locating Catheter for Peritoneal Dialysis: A Randomized Trial

We developed a technique for direct start of peritoneal dialysis. Using a coiled or straight Tenckhoff catheter often results in obstruction of flow. A self-locating Wolfram catheter is on the market. It is not clarified if this results in a benefit.The primary aim of this study was to perform a randomized investigation to clarify if the use of a self-locating peritoneal dialysis (PD) catheter would result in different flow problems than a straight Tenckhoff catheter.A total of 61 insertions were made who were randomized and received either a straight Tenckhoff (n = 32) or a self-locating Wolfram catheter (n = 29). A previously described operation technique allowed immediate postoperative start of dialysis. Seven straight Tenckhoff catheters had to be changed into self-locating catheters, and none vice versa, due to flow problems (P = 0.011). An early leakage resulted in temporarily postponed PD in 4 patients. This study showed that using the present operation technique the self-locating PD-catheter causes fewer obstruction episodes than a straight Tenckhoff catheter. This facilitates immediate postoperative start of PD.

A novel technique of catheter placement with fibrin glue to prevent pericatheter leakage and to enable no break-in period in peritoneal dialysis

OBJECTIVE

Pericatheter leakage is a catheter-related complication of peritoneal dialysis (PD). To prevent pericatheter leakage, a modified technique of PD catheter insertion with fibrin glue was performed in 19 children.

METHODS

At the time of PD catheter insertion, as much fibrin glue as possible was injected into the subcutaneous tissue along the tunneled segment of the catheter and then the skin was compressed.

RESULTS

There was no occurrence of pericatheter leakage and full PD could be initiated 1 day (median) after implantation.

CONCLUSIONS

This technique prevented pericatheter leakage completely even in smaller-weight infants and will enable initiation of full PD with no break-in period.

Peritoneal dialysis catheter placement in the right lower quadrant is associated with a lower risk of catheter tip migration: a retrospective single-center study

PURPOSE

The aim of this study was to investigate the effect of a modified technique for peritoneal dialysis catheter placement in the right lower quadrant with respect to catheter tip migration.

METHODS

This retrospective study included 237 patients with end-stage renal disease who underwent implantation of a two-cuff straight-end swan-neck catheter for peritoneal dialysis. Ninety-eight patients received conventional catheter placement in the left quadrant (beside the umbilicus 12-13 cm above the pubic symphysis) with catheter exit site on the left, and 139 patients received modified catheter placement in the right lower quadrant (beside the umbilicus 6-7 cm above the pubic symphysis) with catheter exit site on the right. Dialysate inflow time, dialysate outflow time, ultrafiltration volume, infection, hemorrhage, intestinal obstruction, and catheter tip migration were recorded.

RESULTS

There were no significant differences in dialysate inflow time, dialysate outflow time, ultrafiltration volume, infection, hemorrhage, or intestinal obstruction between the conventional and modified groups. Catheter tip migration occurred in 19 (19.3%) of the 98 patients in the conventional group, and in 5 (3.6%) of the 139 patients in the modified group. The frequency of occurrence of catheter tip migration was significantly less in the modified group compared with the conventional group (p < 0.01). In addition, repositioning of the catheter occurred in all five patients with catheter tip migration in the modified group after conservative treatment, whereas 12 patients required surgical repositioning of the catheter in the conventional group.

CONCLUSIONS

The modified technique is superior to the conventional technique in reducing catheter tip migration. This technique can be widely performed in the clinic.

Impact of break-in period on the short-term outcomes of patients started on peritoneal dialysis

OBJECTIVES

Peritoneal dialysis (PD) is one of the first-line modalities of renal replacement therapy in patients with end-stage renal disease. Guidelines recommended a break-in period of at least 2 weeks before full PD start. However, the optimal duration of the break-in period is still unclear. In the present study, we investigated the effect of various break-in periods on short-term outcomes in patients on PD. ♢

METHODS

All patients who underwent Tenckhoff catheter implantation and initiated PD in Renji Hospital, Shanghai Jiao Tong University School of Medicine, between 1 January 2001 and 31 December 2010 were included. Patients were grouped according to the duration of their break-in period: 7 days or less (BI ≤ 7), 8 - 14 days (BI8-14), and more than 14 days (BI>14). Kaplan-Meier curves and log-rank tests were used to compare short-term outcomes in the various groups. ♢

RESULTS

Our study enrolled 657 patients (44.5% men), of whom 344, 137, and 176 patients were in the respective break-in groups. Compared with BI>14 patients, BI ≤ 7 patients had a lower estimated glomerular filtration rate (5.34 ± 1.86 mL/min/1.73 m(2) vs 6.55 ± 1.71 mL/min/1.73 m(2), p < 0.001) and lower serum albumin (33.29 ± 5.36 g/L vs 36.64 ± 5.40 g/L, p < 0.001). The incidence of mechanical complications during the first 6 months was significantly higher in BI ≤ 7 patients than in BI>14 patients (8.4% vs 1.7%, p = 0.004). However, we observed no significant differences between the three groups with respect to the prevalence of catheter dysfunction requiring surgical intervention (p > 0.05). Logistic regression analysis showed that BI ≤ 7 [relative risk: 4.322; 95% confidence interval (CI): 1.278 to 14.608; p = 0.019] was an independent predictor of catheter dysfunction, but not of catheter dysfunction requiring surgical intervention (p > 0.05). Catheter dysfunction [hazard ratio (HR): 20.087; 95% CI: 7.326 to 55.074; p < 0.001] and peritonitis (HR: 4.533; 95% CI: 1.748 to 11.751; p = 0.002) were risk factors for technique failure during the first 6 months, but BI ≤ 7 was not correlated with technique failure. ♢

CONCLUSIONS

Patients starting PD with a break-in period of less than 1 week might experience a minor increased risk of mechanical complications, but no major effect on technique survival.

A modified open surgery technique for peritoneal dialysis catheter placement decreases catheter malfunction

BACKGROUND

This retrospective study was conducted to evaluate the effect of a new, modified open surgery technique on catheter-related malfunction.

METHODS

During the period from January 1997 to June 2009, 216 patients received initial peritoneal catheters. For the present study, patients were divided into four groups according to the catheter types and the surgery techniques: TO-S: traditional open surgery, straight Tenckhoff catheter TO-C: traditional open surgery, coiled Tenckhoff catheter TO-SN: traditional open surgery, swan-neck catheter MO-S: modified open surgery, straight Tenckhoff catheter The modified surgery was characterized by a low incision site, a short intra-abdominal catheter segment and an additional upward straight subcutaneous tunnel. All patients were followed up for 2 years or until death. Survival rates, complications caused by catheter placement, and the probability of malfunction-free catheter survival were compared between the groups.

RESULTS

Catheter malfunction was the most frequent mechanical complication, found in 31 patients (14.4%), who experienced 38 malfunctions. Only 2 episodes of catheter malfunction were found in the MO-S group, representing a rate significantly less than those in the TO-S and TO-C groups (both p < 0.05). Kaplan-Meier curves for malfunction-free PD catheter survival showed a significantly different malfunction-free probability for the various groups (p = 0.009). After 2 years of follow-up, 136 patients (63.0%) survived with their initial PD catheter. The initial catheter survival rate was 76.8% in the MO-S group. Kaplan-Meier curves for initial catheter survival showed that the highest survival rate was found in the MO-S group (p = 0.001).

CONCLUSIONS

The modified open surgery technique is a reliable method for catheter placement.

Urgent-start peritoneal dialysis: a chance for a new beginning

Peritoneal dialysis (PD) remains greatly underutilized in the United States despite the widespread preference of home modalities among nephrologists and patients. A hemodialysis-centric model of end-stage renal disease care has perpetuated for decades due to a complex set of factors, including late end-stage renal disease referrals and patients who present to the hospital requiring urgent renal replacement therapy. In such situations, PD rarely is a consideration and patients are dialyzed through a central venous catheter, a practice associated with high infection and mortality rates. Recently, the term urgent-start PD has gained momentum across the nephrology community and has begun to change this status quo. It allows for expedited placement of a PD catheter and initiation of PD therapy within days. Several published case reports, abstracts, and poster presentations at national meetings have documented the initial success of urgent-start PD programs. From a wide experiential base, we discuss the multifaceted issues related to urgent-start PD implementation, methods to overcome barriers to therapy, and the potential impact of this technique to change the existing dialysis paradigm.

[Surgical aspects of peritoneal dialysis]

Peritoneal dialysis (PD) has wide clinical range since die 70ies. Clinical data report a significantly higher 2 year survival rate for PD compared to patients treated with hemodialysis. Nevertheless, currently only about 10 % of patients suffering from end-stage renal disease are treated with PD. Long-term function of the catheter is based on patient's compliance as well as optimal surgical catheter implantation. Beside the classic "open" surgical approach by mini laparotomy new minimal invasive techniques of catheter implantation were developed during the last years. Advantages of laparoscopic techniques are the possibility for combined intraperitoneal procedures and optimal placement of the catheter. Most of surgery-related complications are caused by leakage or migration, infection is very rare. Several studies did not find an advantage of minimal invasive procedures regarding complications.This review should give an overview on currently established surgical techniques for PD-catheter implantation.

The choice of peritoneal dialysis catheter implantation technique by nephrologists

Peritoneal dialysis catheter (PDC) is the lifeline of peritoneal dialysis (PD) patients. One of the critical issues for successful PD is a well-functioning PDC which is timely inserted. It is the implantation technique rather than the catheter design that determines the outcome of the catheter. Dedication in acquiring the appropriate technique is vital to the success of a PD program. In this paper, we discuss the pros and cons of various techniques used for PDC implantation. A detailed description of PDC implantation by using the minilaparotomy method is presented. We strongly recommend mini-laparotomy as the method of choice for PDC implantation by nephrologists.

A brief recap of tips and surgical manoeuvres to enhance optimal outcome of surgically placed peritoneal dialysis catheters

Background. Peritoneal dialysis (PD) is an effective option of renal replacement therapy for ESRF, offering advantages over haemodialysis. Peritoneal dialysis catheter (PDC) placement is thought to be the key to successful PD and the economic advantages are lost if a patient switches to HD in the 1st year. This paper is a brief document elaborating a recap of published literature, looking at various surgical tips and manoeuvres to enhance optimal outcome of PDC placement. Methods. A search strategy assessing for access team, preoperative antibiotic prophylaxis, type of catheter, catheter exit site, intraoperative catheter trial, optimal time to commence PD, hernia repairs, number of cuffs, catheter-embedding procedures, rectus sheath tunnelling, laparoscopic fixing, omentopexy, omentectomy, the "Y"-Tec system, resection of epiploic appendages, adhesiolysis, a trained surgeon, and perioperative catheter care protocol was used looking at various databases. Findings. The complications of catheterrelated dysfunction can be reduced with advanced planning of access placement, immaculate surgery, and attention to catheter insertion techniques. Conclusion. The success of a peritoneal dialysis programme depends upon functional and durable long term access to the peritoneal cavity; this depends on placement techniques and competent surgeons and psychosocial support to the patient. The various technical tips and manoeuvres elaborated here should be considered options carried out to improve outcome and reduce catheter dysfunction.

Factors associated with early catheter-related complications in peritoneal dialysis

PURPOSE

It is advocated to delay the start of peritoneal dialysis (PD) at least 10-14 days after insertion of peritoneal catheter. The aim of this study was to investigate factors associated with catheter-related complications (CRC) in patients starting PD early (1-13 days) (ES) and late (14 days or more) (LS) after catheter implantation.

MATERIAL/METHODS

Single center, retrospective analysis of CRC occurring within 14 days of follow up after peritoneal dialysis initiation in ES and LS group of patients.

RESULTS

A total of 97 patients were analyzed. Seventy percent of them were ES. There were significantly more CRC in ES vs. LS (31% vs. 3%, p=0.01). Significantly more mechanical CRC occurred in ES than in LS (21% vs. 0%, p=0.01). Occurrence of infectious CRC did not differ between the groups. In multivariate analysis the only predictor of CRC development was the time elapsed between catheter insertion and beginning of PD (Odds Ratio [OR] 0.80 95% Confidence Interval [95% CI] 0.70-0.91; p=0.001).

CONCLUSIONS

Each day of delay of PD initiation following peritoneal catheter insertion decreases the odds for development of mechanical CRC.

A clinical review of peritoneal dialysis

OBJECTIVE

To review the principles and practice of peritoneal dialysis in veterinary medicine.

DATA SOURCES

Clinical and experimental studies and current guideline recommendations from the human literature; and original case studies, case reports, and previous reviews in the veterinary literature.

SUMMARY

Peritoneal dialysis involves the exchange of solutes and fluid between the peritoneal capillary blood and the dialysis solution across the peritoneal membrane. It requires placement of a peritoneal dialysis catheter for repeated dialysate exchange. The ideal catheter provides reliable, rapid dialysate flow rates without leaks or infections. Catheter selection and placement are reviewed along with dialysate selection, exchange prescriptions, and overall patient management. PD does not require specific or complex equipment, and it can achieve effective control of uremia and electrolyte imbalances.

CONCLUSIONS

Peritoneal dialysis is a potential life-saving measure for patients with acute renal failure. Peritoneal dialysis results in gradual decline in uremic toxins. Previously low success rates have been reported. Improved success rates have been noted in dogs with acute kidney injury (AKI) secondary to leptospirosis. Cats also have a good success rate when PD is elected in patients with a potentially reversible underlying disease. Overall, PD remains a viable intervention for patients with AKI unresponsive to medical management. In select patients a favorable outcome is attained whereby PD provides temporary support until return of effective renal function is attained.

Early Initiation of Continuous Ambulatory Peritoneal Dialysis in Patients Undergoing Surgical Implantation of Tenckhoff Catheters

Background

Nephrologists commonly recommend continuous ambulatory peritoneal dialysis (CAPD) with break-in periods of at least 2 weeks. We investigated the safety and feasibility of shorter break-in periods following surgical implantation of Tenckhoff catheters.

Methods

We retrospectively examined 310 patients that underwent Tenckhoff catheter implantation for the first time. The early group comprised 226 patients that started CAPD ≤ 14 days after implantation; the late group comprised 84 patients that started CAPD > 14 days after implantation. Catheter-related complications within 6 months were analyzed.

Results

A total of 310 patients were enrolled. Time to CAPD initiation was shorter in the early group (2.0 ± 2.7 days) than in the late group (40.6 ± 42.8 days) ( p < 0.001). The bridge hemodialysis rate was higher in the late group (57.1%) than in the early group (31.4%) ( p < 0.001). Overall, 33 early-group (14.6%) and 11 late-group patients (13.1%) developed catheter-related complications within 6 months. The early-group complications were leakage ( n = 5), diminished outflow volume ( n = 7), migration ( n = 7), pericatheter hernia ( n = 1), hemoperitoneum ( n = 1), pericatheter infection ( n = 3), and peritonitis ( n = 9). The late-group complications were leakage ( n = 2), diminished outflow volume ( n = 5), migration ( n = 2), and peritonitis ( n = 2). Actuarial freedom from catheter-related complications was similar in both groups (log rank, p = 0.76).

Conclusion

Early initiation of CAPD with surgically implanted Tenckhoff catheters is feasible and safe. Shorter break-in periods are not associated with more catheter-related complications. The data from our peritoneal dialysis population suggest that early initiation is not associated with an increased number of complications. This needs to be confirmed in a randomized trial.

Shorter break-in period is a viable option with tighter PD catheter securing during the insertion

BACKGROUND

Recent single-arm studies reported good catheter outcome despite shorter break-in periods after peritoneal dialysis (PD) catheter insertions. These results were attributed to tight catheter securing during the insertions.

OBJECTIVE

To compare catheter-related outcomes after different break-in periods in the tightly secured PD catheters.

PATIENTS AND METHODS

The study cohort comprised 48 patients, who underwent catheter insertions with the modified insertion technique. Based on the duration of break-in period, the patients were grouped into a shorter break-in period arm, with break-in period of 7 days or less and a standard break-in period arm, with break-in period of about 2 weeks. Mean patient follow up was 9.68 +/- 4.35 months, with a similar follow-up duration between the two break-in period arms (P = 0.94).

RESULTS

In the study cohort, the incidence of pericatheter leaks, pericatheter haemorrhage, catheter malfunction and peritonitis was 2/48 (4%), 1/48 (2%), 1/48 (2%) and 3/48 (6%), respectively. There was no other-site leak, bowel perforation, hernia formation or wound dehiscence. Of these complications, two pericatheter leaks, one catheter malfunction and three peritonitis episodes followed standard break-in periods, whereas, one pericatheter haemorrhage occurred in the shorter break-in period arm.

CONCLUSION

After a tight catheter securing during the insertions, overall pericatheter leak incidence remained low in the whole study cohort, and it did not worsen despite a shorter break-in period. Future studies with larger patient numbers are needed to validate the role of shorter break-in period in PD practice.

Advantages and disadvantages of surgical placement of PD catheters with regard to other methods

Peritoneal dialysis is underused for various reasons. One reason may be problems with insertion of catheters for access. Another reason is the delayed start (break-in period) of about 2 weeks after operation. This review describes various approaches to the insertion of a peritoneal dialysis catheter. The optimal conditions to strive for are given as is an overview of various techniques. This article favours surgical placement while others might prefer other techniques. Described is the use a 3-purse string suture technique that allows immediate start of dialysis after catheter insertion both for acute dialysis indications as well as for acute start in chronic dialysis patients. A key to lesser complications is to establish a team devoted to the insertions rather than to allow various physicians to perform insertions as a training procedure. An optimal access is one of the important life lines for these patients.