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Dialysis
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Staphylococcus aureus Peritonitis Complicates Peritoneal Dialysis: Review of 245 Consecutive Cases

Cheuk-Chun Szeto, Kai-Ming Chow, Bonnie Ching-Ha Kwan, Man-Ching Law, Kwok-Yi Chung, Samuel Yu, Chi-Bon Leung and Philip Kam-Tao Li
CJASN March 2007, 2 (2) 245-251; DOI: https://doi.org/10.2215/CJN.03180906
Cheuk-Chun Szeto
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Kai-Ming Chow
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Bonnie Ching-Ha Kwan
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Man-Ching Law
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Kwok-Yi Chung
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Samuel Yu
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Chi-Bon Leung
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Philip Kam-Tao Li
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Abstract

Peritonitis that is caused by Staphylococcus aureus is a serious complication in peritoneal dialysis (PD), but the clinical course of PD-related S. aureus peritonitis remains unclear. All of the S. aureus peritonitis in a dialysis unit from 1994 to 2005 were reviewed. During this period, 2065 episodes of peritonitis were recorded; 245 (11.9%) episodes in 152 patients were caused by S. aureus and 45 (18.4%) episodes were caused by methicillin-resistant S. aureus (MRSA). Patients with a history of recent hospitalization had a higher risk for isolation of MRSA than the others (30.6 versus 14.2%; P = 0.004). The overall primary response rate was 87.8%; the complete cure rate was 74.3%. However, 21 (8.6%) episodes developed relapse and 59 (24.1%) developed repeat S. aureus peritonitis. Episodes that were caused by MRSA had a lower primary response rate (64.4 versus 93.0%; P < 0.001) and complete cure rate (60.0 versus 77.5%; P = 0.023) than the others. Episodes that were treated initially with vancomycin had better primary response rate than those that were treated with cefazolin (98.0 versus 85.2%; P = 0.001), but the complete cure rate was similar. Adjuvant rifampicin treatment was associated with a significantly lower risk for relapse or repeat S. aureus peritonitis than was treatment without rifampicin (21.4 versus 42.8%; P = 0.004). In contrast, initial antibiotic regimen (cefazolin versus vancomycin) and concomitant exit-site infection did not have any effect on the risk for relapse or repeat peritonitis. S. aureus peritonitis is a serious complication of PD. Recent hospitalization is a major risk factor of methicillin resistance in the bacterial isolate. Rifampicin is a valuable adjunct in preventing relapse and repeat S. aureus peritonitis after the index episode.

Peritonitis is a serious complication of peritoneal dialysis (PD) (1–3); it probably is the most important cause of technique failure in PD (2–5). In Hong Kong, >16% of the deaths in patients who are being treated with PD are secondary to peritonitis (6). Similarly, 18% of the infection-related mortality in PD patients is the result of peritonitis in the United States (7).

Gram-positive organisms remain the most common bacteriologic cause of PD-related peritonitis (1,5,8). Although coagulase-negative Staphylococcus species accounted for nearly half of all Gram-positive episodes (9,10), Staphylococcus aureus peritonitis generally is a more severe form of Gram-positive peritonitis (11,12). S. aureus peritonitis occurs predominantly in patients who have a history of S. aureus catheter infections. Patients who have S. aureus colonization in the nares (13–15), on the skin (16), or at the peritoneal catheter exit site (16–18) are at particular risk for developing S. aureus peritonitis. Even one positive nose culture increases the risk for S. aureus peritonitis (13,19). Patients with S. aureus peritonitis often have severe abdominal pain, require hospitalization, and may require catheter removal for resolution, especially when a concomitant tunnel infection is present (20,21). The outcome of peritonitis that is caused by S. aureus is worse than that of other staphylococci (11,12,22), and the risk for recurrent peritonitis is 60% within 6 mo (9).

Current guideline for the management of S. aureus peritonitis by the Ad Hoc Advisory Committee on Peritonitis Management recommends single effective antibiotics therapy, for example, cefazolin or vancomycin, for 3 wk (23). However, this recommendation was based largely on small clinical studies (11–13,21,22). The clinical course of PD-related S. aureus peritonitis remains unclear. In Hong Kong, PD is the first-line renal replacement therapy for all patients with ESRD (3). Patients are switched to long-term hemodialysis only when they have ultrafiltration failure or peritoneal sclerosis. This policy provides an excellent opportunity for us to examine the clinical feature and therapeutic outcome of S. aureus peritonitis in a large unselected group of PD patients.

Patients and Methods

All episodes of continuous ambulatory PD peritonitis in our unit from 1994 to 2005 were reviewed. The diagnosis of peritonitis was based on at least two of the following (24,25): (1) Abdominal pain or cloudy peritoneal dialysis effluent (PDE), (2) leukocytosis in PDE (white blood cell count >100/ml), and (3) positive Gram stain or culture from PDE. Episodes with peritoneal eosinophilia but negative bacterial culture were excluded. Exit-site infection was diagnosed when there was purulent drainage, with or without erythema, from the exit site (26).

In the 12 yr of study period, 2065 episodes of peritonitis were recorded; 279 (13.5%) episodes were caused by S aureus. Thirty-four episodes were excluded from analysis because PDE culture showed mixed bacterial growth. The case records of the remaining 245 episodes in 152 patients were reviewed. The demographic characteristics, underlying medical conditions, previous peritonitis, recent antibiotic therapy, antibiotic regimen for the peritonitis episode, requirement of Tenckhoff catheter removal, and clinical outcome were examined.

Microbiological Investigations

Bacterial culture of PDE was performed by BacTAlert bottles (Organon Teknika Corp., Durham, NC). Species identification was performed by the API 20E identification system (BioMerieux, Marcy l’Etolie, France). Antibiotic sensitivity was determined by the disc-diffusion method according to the National Committee for Clinical Laboratory Standard (27).

Clinical Management

Peritonitis episodes were treated with standard antibiotic protocol of our center at that time, which was changed systemically over time. Initial antibiotics for peritonitis generally were intraperitoneal administration of a third- or fourth-generation cephalosporin, plus or minus intermittent vancomycin every 5 d, or cefazolin as continuous administration plus an aminoglycoside or ceftazidime (5). The dosages of vancomycin and cefazolin followed the contemporary guideline (23). Antibiotic regimens for individual patients were modified when culture results were available. Rifampicin sometimes was added as adjunct therapy, as judged by the individual nephrologist. In our center, nasal swab screening for S. aureus carrier was performed in all patients with S. aureus peritonitis or exit-site infection. Positive nasal culture of S. aureus was treated routinely with mupirocin ointment; adjuvant rifampicin was used for S. aureus peritonitis by individual nephrologist decision but independent of the result of nasal swab culture.

In general, patients received effective antibiotic for 21 d. When the initial antibiotic was cefazolin and the PDE did not clear up on day 5, the antibiotic was changed to vancomycin. Primary response was defined as resolution of abdominal pain, clearing of dialysate, and PDE neutrophil count <100/ml on day 10 with antibiotics alone. When the PDE did not clear up on day 10, the Tenckhoff catheter was removed immediately irrespective of the in vitro sensitivity of the bacterial strain and effective antibiotic was continued for another 2 wk.

Tenckhoff catheters were removed and patients were put on temporary hemodialysis when peritonitis failed to resolve with antibiotics. Tenckhoff catheter reinsertion was attempted in all cases. In our locality, as described in our previous study (4), patients were switched to long-term hemodialysis only when attempts of Tenckhoff catheter re-insertion failed because of peritoneal adhesion or when there was ultrafiltration failure as a result of peritoneal sclerosis. Relapse peritonitis was defined as an episode that occurred within 4 wk of completion of therapy of a previous episode with the same organism (or culture negative) (23). Recurrent peritonitis was defined as an episode that occurred within 4 wk of completion of therapy of a previous episode but with a different organism (23). Complete cure was defined as complete resolution of peritonitis by antibiotics alone without relapse or recurrence within 4 wk of completion of therapy. Repeat peritonitis was defined as an episode that occurred more than 4 wk after completion of therapy of a previous episode with the same organism (23). All of the patients were followed for at least 3 mo after their treatment was completed.

Statistical Analyses

Statistical analysis was performed by SPSS for Windows software (version 10.0; SPSS, Chicago, IL). All data are expressed in mean ± SD unless otherwise specified. Data were compared by χ2 test, Fisher exact test, and t test as appropriate. Multivariate analysis by logistic regression and backward stepwise analysis was used to test for independent factors that predicted therapeutic response. All baseline demographic and clinical variables, including age, gender, duration of dialysis, underlying renal diagnosis, diabetes status, number of previous peritonitis episode, recent peritonitis episode, recent antibiotic usage, treatment regimen of the episode, and presence of exit-site infection, were included in the model construction. P < 0.05 was considered significant. All probabilities were two tailed.

Results

From 1994 to 2005, 2065 episodes of PD-related peritonitis were recorded in our unit. The overall peritonitis rate was 19.8 patient-months per episode. We reviewed 245 episodes of S. aureus peritonitis in 152 patients. The absolute rate of S. aureus peritonitis was 0.072 episode per patient-year of treatment. Their demographic and baseline clinical data are summarized in Table 1. All patients had cloudy dialysis effluent. In 20 (8.2%) episodes, there was fever, hypotension, or other feature of systemic sepsis that required hospital admission.

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Table 1.

Baseline characteristics of the patients

In 60 (24.56%) episodes, there was concomitant exit-site infection; S. aureus was isolated in 35 (14.3%) episodes. The bacteriologic cause of exit-site infection is summarized in Table 2. Twelve (4.9%) episodes developed when the patient was hospitalized for other medical reasons. In another 39 (15.9%) episodes, the patient had had hospitalization within 30 d before the onset of S. aureus peritonitis. There was a history of antibiotic therapy within 30 d before the onset of S. aureus peritonitis in 133 (54.3%) episodes. Antibiotics were given in 36 (14.7%) cases for a recent peritonitis episode by other organisms, in 54 (22.0%) cases for recent exit-site infection, and in 43 (17.6%) cases for unrelated medical reasons. In 19 (7.8%) cases, the patient received two or more antibiotics within 30 d before the onset of S. aureus peritonitis.

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Table 2.

Summary of bacterial species that caused exit-site infection

Methicillin-Resistant S. aureus

Forty-five (18.4%) episodes were caused by methicillin-resistant S. aureus (MRSA). In general, MRSA peritonitis was clinically severe and more likely to require hospital admission than were the episodes that were caused by methicillin-sensitive S. aureus (MSSA; 17.8 versus 6.0%; P = 0.009).

We further analyzed the risk factors of isolating methicillin-resistant strains from the patient. Patients with a history of recent hospitalization had a higher risk for isolation of MRSA than did the others (30.6 versus 14.2%; P = 0.004), but a history of recent antibiotic therapy did not impose a higher risk (17.3 versus 19.6%; P = 0.6). Patients who developed S. aureus peritonitis during hospitalization also had a higher risk for isolation of MRSA than did outpatients (50.0 versus 16.7%; P = 0.004), but the absolute number of inpatient MRSA peritonitis was small (six of the 45 episodes). Diabetes status, Charlson comorbidity score, and concomitant exit-site infection did not affect the risk for isolation of MRSA strains (data not shown).

Clinical Outcome

The overall primary response rate was 87.8%; the complete cure rate was 74.3%. Episodes that were caused by MRSA had significantly lower primary response rate (64.4 versus 93.0%; P < 0.001) and complete cure rate (60.0 versus 77.5%; P = 0.023) than did the others. The clinical outcome, according to the bacterial isolate’s sensitivity to methicillin, is summarized in Figure 1. Twelve (4.9%) patients died during the treatment of peritonitis (see Figure 1). The causes of death were peritonitis per se (five patients), nonperitonitis infection (three patients), myocardial infarction (three patients), and stroke (one patient). Another six patients died within 2 mo after completion of treatment; the causes of death were recurrent peritonitis by another organism (three patients), nonperitonitis infection (two patients), and intestinal obstruction (one patient). The overall 2-mo mortality was 7.3%. Tenckhoff catheter removal was needed in 14 (5.7%) episodes; resumption of PD was possible in eight patients after 3 to 4 wk of temporary hemodialysis.

Figure 1.
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Figure 1.

Summary of clinical outcome. (A) Methicillin-sensitive Staphylococcus aureus (MSSA) peritonitis. (B) Methicillin-resistant Staphylococcus aureus (MRSA) peritonitis. See text for the definitions of relapse, recurrent, and repeat peritonitis. TK, Tenckhoff catheter.

We then analyzed the predicting factor of treatment response. Patients with primary response were significantly younger than those without response (51.6 ± 13.5 versus 57.3 ± 13.2 yr; P = 0.03), but age had no effect on the complete cure rate. Episodes that were treated initially with vancomycin had a higher primary response rate than did those that were treated with cefazolin (94.0 versus 78.8%; P = 0.001), but the complete cure rate was similar (76.9 versus 73.1%; P = 0.5). Even after episodes that were caused by MRSA were excluded, initial treatment with vancomycin had a higher primary response rate than those with cefazolin (98.0 versus 85.2%; P = 0.001). As compared with episodes that could be treated as outpatient, those that required hospital admission had a lower primary response rate (55.0 versus 90.7%; P < 0.001) and complete cure rate (50.0 versus 76.4%; P = 0.01). Patients who developed S. aureus peritonitis during hospitalization also had a lower primary response rate than did the others (66.7 versus 88.8%; P = 0.022), but the complete cure rate was similar. Diabetes status, Charlson comorbidity score, concomitant exit-site infection, recent hospitalization, and recent antibiotic therapy did not affect significantly the primary response rate or complete cure rate (data not shown).

Relapse and Repeat S. aureus Peritonitis

Of the 245 episodes, 21 (8.6%) developed relapse and 59 (24.1%) developed repeat S. aureus peritonitis. The time frame for development of repeat peritonitis is summarized in Figure 2. In four episodes, the initial bacterial isolate was methicillin sensitive, but the isolate became MRSA during the repeat episode. Contrary to general belief, peritonitis that was caused by MRSA had a slightly lower risk for relapse or repeat S. aureus peritonitis than did the episodes that were caused by methicillin-sensitive strains (20.7 versus 39.8%; P = 0.048). The initial antibiotic regimen (cefazolin versus vancomycin) had no significant effect on the risk for relapse or repeat peritonitis (31.7 versus 40.9%; P = 0.15). Age, diabetes status, Charlson comorbidity score, concomitant exit-site infection, recent hospitalization, and recent antibiotic therapy did not have any effect on the risk for relapse or repeat S. aureus peritonitis (data not shown).

Figure 2.
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Figure 2.

Distribution histogram of the time of developing repeat peritonitis after antibiotic treatment was completed. *Relapse S. aureus peritonitis by definition.

The primary response rate was similar between patients with and without adjuvant rifampicin therapy (82.4 versus 89.8%; P = 0.11) and so was the complete cure rate (77.9 versus 72.9%; P = 0.4). However, adjuvant rifampicin treatment was associated with a significantly lower risk for relapse or repeat S. aureus peritonitis than was treatment without rifampicin (21.4 versus 42.8%; P = 0.004). Adjuvant rifampicin treatment resulted in 49.9% relative risk reduction in relapse or repeat S. aureus peritonitis (95% confidence interval 14.6 to 70.6%). In other words, one case of relapse or repeat peritonitis could be prevented by treating approximately five patients with rifampicin. The effect of rifampicin remained substantial even after exclusion of cases with early relapse (within 4 wk after completion of antibiotics): Adjuvant rifampicin significantly reduced the risk for repeat peritonitis (23.3 versus 38.0%; P = 0.012). In seven cases, we performed simultaneous Tenckhoff catheter exchange after PDE cleared up because of persistent exit-site infection (not necessarily caused by S. aureus). Three of them, nonetheless, developed repeat S. aureus peritonitis 4 to 12 wk later.

Discussion

We found that the overall clinical outcome of S. aureus peritonitis is not encouraging. Only 51% of patients with MSSA peritonitis and 46% with MRSA peritonitis had complete cure without need for catheter removal, relapse, or recurrent or repeat peritonitis. Notably, repeat S. aureus peritonitis developed in almost one third of the patients with complete cure. More important, we found that more than half of the repeat peritonitis occurred within 3 mo after completion of antibiotics. The result is distinctly different from that of our previous study on Enterobacteriaceae peritonitis (28), which found that repeat peritonitis occurred evenly in 1 yr after the index episode. Traditionally, most cases of S. aureus peritonitis are associated with a catheter infection (29); catheter removal often is required to resolve the peritonitis or to prevent repetitive episodes (21,30,31) because concomitant colonization or infection of the exit site with S. aureus is associated with a substantially increased risk for relapse (32). In the present series, one fourth of the patients had exit-site infection. Contrary to our previous reports on Pseudomonas (33) and Enterobacteriaceae peritonitis (28), exit-site infection was not associated with the treatment response in the present study, and elective change of PD catheter seemed ineffective in preventing repeat S. aureus peritonitis. Our result suggests that there are important contributing factors of relapse, and repeat episodes were caused by factors in addition to an infected catheter. Persistent carrier state (e.g., in the nasal cavity) is one of the most likely explanations. However, intraperitoneal sequestration of bacteria also is possible, at least theoretically. A previous study showed that mesothelial cells can ingest S. aureus, and the ingested staphylococci proliferated abundantly within mesothelial cells, which may be released subsequently (34). Recently, Haslinger-Loffler et al. (35) showed that after host cell invasion, S. aureus resided within phagocytic vacuoles, and mesothelial cells seemed to be able to degrade staphylococci. However, even after prolonged infection, a high percentage of S. aureus remained alive within mesothelial cells and might be released after host cell death (35).

We found that adjuvant rifampicin is highly effective in preventing relapse or repeat S. aureus peritonitis, presumably by eradicating occult colonization in other body parts. It is interesting that rifampicin also is particularly useful in targeting intracellular bacteria, as discussed. Our result is consistent with previous reports (36–39). For example, Zimmerman et al. (37) reported that periodic oral rifampin reduced the rate of staphylococcal exit-site infection. Bernardini et al. (38) showed that the use of either rifampin or mupirocin was associated with low rates of staphylococcal catheter infections and catheter loss. In another study with historical controls, the rate of staphylococcal exit-site infection and peritonitis was lower after oral rifampin prophylaxis (39). However, extensive use of rifampicin for the eradication of S. aureus carriage is hindered by rapid recolonization (39), and the risk for development of resistance is considerable. Our data, however, provide support for the use of rifampicin for the secondary prevention of S. aureus peritonitis after an index episode, which probably can reduce the unnecessary use of rifampicin.

The overall rate of S. aureus peritonitis in our present series is 0.072 episode per patient-year of dialysis, which is much lower than that reported in the literature of the late 1990 (38,40) but similar to more recent series (10). It is possible that during these years, the practice of nasal swab and treatment of carrier have improved (10). Unfortunately, because of the retrospective nature of our study, we do not have the complete data on the nasal S. aureus carrier status or mupirocin treatment in our patients. Because of the limitations in our data, we cannot ascertain whether the beneficial effect of rifampicin is restricted to nasal S. aureus carrier, and we cannot make any conclusion on the use of mupirocin ointment in secondary prevention of S. aureus peritonitis.

Although we found that episodes that were treated initially with cefazolin had a lower primary response rate than did those that were treated with vancomycin, our data do not argue strongly for either cefazolin or vancomycin as the first-line coverage of Gram-positive organisms. However, a small but considerable proportion of patients with MSSA peritonitis did not respond clinically to initial cefazolin treatment but were cured when changed to vancomycin, generally 3 to 5 d after onset of peritonitis. The mechanism of this “in vivo” resistance to cefazolin is unknown. First, the sensitivity of the conventional single selective medium method for the detection of methicillin resistance is only 65 to 100% (41). Alternatively, stable cell wall–deficient L-phase variants may be induced by cefazolin but remain susceptible to vancomycin (42). Although the actual reason remains obscure, our result indicates that vancomycin is a valuable salvage agent of MSSA peritonitis when response to cefazolin is unsatisfactory.

In the present study, nearly 20% of the episodes were caused by MRSA. Published literature on MRSA peritonitis in PD patients is scarce; our series probably is the largest one to date. Conforming to the general belief, the major risk factor for MRSA was recent hospitalization but not recent antibiotic treatment. It could be argued that patients with recent hospitalization should receive vancomycin rather than cefazolin as first-line coverage of Gram-positive organisms. However, only 19 of the 51 patients with recent hospitalization before S. aureus peritonitis actually had MRSA isolated; a substantial proportion of patients would be treated with vancomycin unnecessarily if the antibiotic is used as the first-line agent.

Conclusion

S. aureus peritonitis is a serious complication of peritoneal dialysis. Recent hospitalization is a major risk factor for methicillin resistance in the bacterial isolate. However, in patients with inadequate response to cefazolin, vancomycin often is effective even when the bacterial isolate is sensitive to methicillin in vitro. Relapse and repeat peritonitis is common. Rifampicin is a valuable adjunct in preventing relapse and repeat S. aureus peritonitis after the index episode.

Disclosures

None.

Acknowledgments

This study was supported in part by the Chinese University of Hong Kong research account 6901031.

We thank Lau Miu Fong for clerical support.

Footnotes

  • Published online ahead of print. Publication date available at www.cjasn.org.

  • Received September 20, 2006.
  • Accepted November 30, 2006.
  • Copyright © 2007 by the American Society of Nephrology

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Clinical Journal of the American Society of Nephrology
Vol. 2, Issue 2
March 2007
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Staphylococcus aureus Peritonitis Complicates Peritoneal Dialysis: Review of 245 Consecutive Cases
Cheuk-Chun Szeto, Kai-Ming Chow, Bonnie Ching-Ha Kwan, Man-Ching Law, Kwok-Yi Chung, Samuel Yu, Chi-Bon Leung, Philip Kam-Tao Li
CJASN Mar 2007, 2 (2) 245-251; DOI: 10.2215/CJN.03180906

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Staphylococcus aureus Peritonitis Complicates Peritoneal Dialysis: Review of 245 Consecutive Cases
Cheuk-Chun Szeto, Kai-Ming Chow, Bonnie Ching-Ha Kwan, Man-Ching Law, Kwok-Yi Chung, Samuel Yu, Chi-Bon Leung, Philip Kam-Tao Li
CJASN Mar 2007, 2 (2) 245-251; DOI: 10.2215/CJN.03180906
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More in this TOC Section

  • Cardiac Geometry in Children Receiving Chronic Peritoneal Dialysis: Findings from the International Pediatric Peritoneal Dialysis Network (IPPN) Registry
  • Geographic and Educational Factors and Risk of the First Peritonitis Episode in Brazilian Peritoneal Dialysis Study (BRAZPD) Patients
  • Defining Left Ventricular Hypertrophy in Children on Peritoneal Dialysis
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  • Increasing Staphylococcus Species Resistance in Peritoneal Dialysis-Related Peritonitis over a 10-Year Period in a Single Taiwanese Center
  • The Current State of Peritoneal Dialysis
  • ISPD Peritonitis Recommendations: 2016 Update on Prevention and Treatment
  • Peritonitis before Peritoneal Dialysis Training: Analysis of Causative Organisms, Clinical Outcomes, Risk Factors, and Long-Term Consequences
  • Stability of Tigecycline in Different Types of Peritoneal Dialysis Solutions
  • Pharmacokinetics of Intraperitoneal Cefalothin and Cefazolin in Patients Being Treated for Peritoneal Dialysis-Associated Peritonitis
  • Comparison of Disinfection Procedures on the Catheter Adapter-Transfer Set Junction
  • Staphylococcus aureus Infections: Adipocytes Join the Fight
  • Percutaneous and Surgical Peritoneal Dialysis Catheter Placements Have Comparable Outcomes in the Modern Era
  • Peritoneal Dialysis-Related Peritonitis due to Coagulase-Negative Staphylococcus: A Review of 115 Cases in a Brazilian Center
  • Vancomycin: The Tale of the Vanquisher and the Pyrrhic Victory
  • Bacteria-Derived DNA Fragment in Peritoneal Dialysis Effluent as a Predictor of Relapsing Peritonitis
  • A Qualitative Systematic Review of the Literature Supporting a Causal Relationship Between Exit-Site Infection and Subsequent Peritonitis in Patients with End-Stage Renal Disease Treated with Peritoneal Dialysis
  • Getting Excited about Exit Sites in Peritoneal Dialysis?
  • The Association between Exit Site Infection and Subsequent Peritonitis among Peritoneal Dialysis Patients
  • Consensus Guidelines for the Prevention and Treatment of Catheter-related Infections and Peritonitis in Pediatric Patients Receiving Peritoneal Dialysis: 2012 Update
  • Repeat Peritonitis in Peritoneal Dialysis: Retrospective Review of 181 Consecutive Cases
  • PERITONEAL DIALYSIS-RELATED INFECTIONS RECOMMENDATIONS: 2010 UPDATE
  • CAN WE REDUCE RATES OF STAPHYLOCOCCUS AUREUS AND OTHER PERITONITIS IN PERITONEAL DIALYSIS PATIENTS?
  • STAPHYLOCOCCUS AUREUS PERITONITIS IN AUSTRALIAN PERITONEAL DIALYSIS PATIENTS: PREDICTORS, TREATMENT, AND OUTCOMES IN 503 CASES
  • Coagulase Negative Staphylococcal Peritonitis in Peritoneal Dialysis Patients: Review of 232 Consecutive Cases
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