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Biomedical subjects

Ram Gokal

Publications and source records attributed to Ram Gokal.

28 records · Page 2Linked to original sources

Decrease in infections with the introduction of mupirocin cream at the peritoneal dialysis catheter exit site.

UNLABELLED: Staphylococcus aureus associated peritonitis and catheter exit site infections (ESI) are an important cause of hospitalization and catheter loss in the patients undergoing chronic peritoneal dialysis (PD). We aimed to determine the potential effectiveness of the application of mupirocin cream at the catheter exit site in preventing exit site infection and peritonitis. METHODS: This prospective historically controlled study was done in a total of 86 patients who entered our PD program from April 1999 to January 2001. They were instructed to apply Mupirocin cream 2% to the exit site daily or on alternate days. The patients were not screened to determine whether they were staphylococcus aureus carriers. One hundred and thirteen patients on PD prior to April 1999 acted as historical controls. Both groups were followed prospectively for a period of 22 months. RESULTS: In the study group application of mupirocin lead to a significant reduction in the incidence rate of both exit site infections overall (0.43 vs. 0.09; p<0.0001) and ESI due staphylococcus aureus (0.14 vs. 0.02; p=0.004) amounting to a relative reduction of 79% and 85% respectively. Although the overall incidence of peritonitis did not change (0.28 vs. 0.26; p=0.7) there was a significant reduction in peritonitis caused by staphylococcus aureus (0.07 vs. 0; p=0.01) Although only one catheter required removal in the mupirocin group as against 5 in the control group, this was not statistically significant. CONCLUSIONS: Mupirocin application at the exit site significantly lowers the incidence of ESI and peritonitis caused by staphylococcus aureus without any significant side effects.

Adult↗

A trial of subcutaneous administration of darbepoetin alfa once every other week for the treatment of anemia in peritoneal dialysis patients.

BACKGROUND: Darbepoetin alfa (Aranesp, Amgen) is an erythropoietic stimulating protein with a three fold longer terminal half life than recombinant human erythropoietin (rHuEPO). The purpose of this single center, single arm study was to determine whether darbepoetin alfa is as effective as rHuEPO for the treatment of renal anemia in patients on peritoneal dialysis when administered at a reduced dosing frequency of once every other week irrespective of the initial rHuEPO dose frequency. METHODS: A total of 17 patients on peritoneal dialysis receiving stable rHuEPO therapy were changed to darbepoetin alfa every other week, using the recommended 200:1 conversion factor . The doses of darbepoetin alfa were titrated to maintain hemoglobin within -1.0 to +1.5 g/dL of the patients' baseline value and also within a range of 10.0 to 13.0 g/dL for up to 24 weeks (20 weeks dose titration period followed by 4 week evaluation period). The primary end point was change in hemoglobin levels between baseline and evaluation period. RESULTS: Mean change in hemoglobin levels from baseline to evaluation period was 0.03 g/dL (95% CI -0.62 to +0.69). This was not a statistically significant or clinically relevant difference, despite the reduced frequency of darbepoetin alfa administration. There were no serious or major adverse effects observed with darbepoetin alfa during the study. CONCLUSION: These results show that darbepoetin alfa maintains hemoglobin concentrations effectively and safely in patients on peritoneal dialysis, but with a reduced dose frequency as compared to rHuEPO.

Adult↗

Adequacy targets in peritoneal dialysis.

Adequate solute and fluid removal are the cornerstones of dialysis treatment. In peritoneal dialysis, what constitutes adequate removal, has been hitherto controversial, based as it was on DOQI guidelines. There are now 2 randomised controlled trials that address solute removal--both indicate that the minimal Kt/V needs to be 1.7. This needs to be adjusted in individual cases based on clinical and other parameters. Fluid removal and blood pressure control are also important adequacy parameters. Sub-clinical fluid overload is a common feature and relates to left ventricular hypertrophy. This also needs addressing but estimating fluid status is difficult.

Creatinine↗

Peritoneal catheters and exit-site practices toward optimum peritoneal access: a review of current developments.

OBJECTIVE: This review updates the 1998 International Society for Peritoneal Dialysis (ISPD) recommendations for peritoneal dialysis catheters and exit-site practices (Gokal R, et al. Peritoneal catheters and exit-site practices toward optimum peritonealaccess: 1998 update. Perit Dial Int 1998; 18:11-33.) DESIGN DATA SOURCES: The Ovid and PubMed search engines were used to review the Medline databases of January 1980 through June 2003. Searches were restricted to human data; primary key word searches included dialysis, peritoneal dialysis, and continuous ambulatory peritoneal dialysis cross referenced with access, catheter, dialysis catheter, peritoneal dialysis catheter, and Tenckhoff catheter. Related searches were provided via the PubMed related articles link. STUDY SELECTION: Reports were selected if they provided identifiable information on catheter design, catheter placement technique, and survival or placement complications. Reports without such data were excluded from review. Each study was then categorized by its characteristics: single-center or multicenter; retrospective or prospective; controlled trial, with or without random patient assignment; or review article. MAIN RESULTS: There are few randomized controlled evaluations testing how catheter design and/or placement influence long-term survival and function, and these are typically conducted at a single center. The majority of reports represent retrospective single-center experiences, and these are supplemented by occasional multicenter data registries. CONCLUSIONS: There is substantial variability in catheter outcomes between centers, and this variability is more closely correlated with operator and center characteristics than with catheter design. Some catheter designs appear to impact long-term catheter success, and, in some cases, specific patient characteristics and dialysis formats combine with specific catheter designs to influence catheter survival. Most reporters prefer two-cuff designs and placement of the deep cuff at an intramuscular location. Intramuscular cuff placement results in fewer pericatheter leaks and hernias, but makes catheter removal more difficult. High-risk patients (those with previous pelvic surgery) benefit from visual inspection of the peritoneum during catheter placement, and in randomized controlled trials, catheters with pre-shaped arcuate subcutaneous segments ("swan neck" designs) reduce the risk of early drainage failure via "migration."

Catheterization↗

Sterile peritonitis in the peritoneal dialysis patient.

Peritonitis is a serious and common problem in the peritoneal dialysis (PD) population. Abdominal pain, fever, and cloudy PD fluid usually heralds the onset of infective peritonitis. However, in up to 20% of cases, no organism is identified. In these situations, diagnosis can be made only by excluding a microbiological cause and performing a cytological examination of the PD fluid to determine the cellular or noncellular constituents. This review examines the differential diagnosis of sterile peritonitis and uses cytological examination to facilitate the appropriate diagnosis.

Humans↗