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Clinical |
Department of Surgery,1 Southern California Permanente Medical Group, Kaiser Permanente Downey Medical Center, Downey; Research and Evaluation Department,2 Kaiser Permanente Southern California, Pasadena, California, USA
Correspondence to: J.H. Crabtree, Department of Surgery, Module 4400, Kaiser Permanente Bellflower Medical Office Building, 9400 E. Rosecrans Avenue, Bellflower, California 90706 USA. John.H.Crabtree{at}kp.org
Background: An alternative peritoneal catheter
exit-site location is sometimes needed in patients with obesity, floppy skin
folds, intestinal stomas, urinary and fecal incontinence, and chronic yeast
intertrigo. Two-piece extended catheters permit remote exit-site locations
away from problematic abdominal conditions.
Objective: The effect on clinical outcomes by remotely
locating catheter exit sites to the upper abdomen or chest was compared to
conventional lower abdominal sites.
Methods: In a nonrandomized design, peritoneal access
was established with 158 extended catheters and 270 conventional catheters
based upon body habitus and special clinical needs. Prospective data
collection included patient demographics, infectious and mechanical
complications, and catheter survival.
Results: Kaplan–Meier survival time until first
exit-site infection was longer for extended catheters (p = 0.03).
Poisson regression showed no difference in exit site, subcutaneous tunnel, and
peritonitis infection rates; however, the proportion of catheters lost during
peritonitis episodes was significantly greater for extended catheters
(p = 0.007) and appeared to be due primarily to coagulase-negative
staphylococcus organisms. Poisson regression showed interactions of body mass
index (BMI) and diabetic status in determining catheter loss from peritonitis
for both catheter types (p = 0.02). Extended catheter patients had
higher BMI and diabetes prevalence (p < 0.0001). Overall extended
catheter survival at 1, 2, and 3 years (92%, 80%, 71%) trended lower than
conventional devices (93%, 87%, 80%; p = 0.0505).
Conclusions: Extended catheters enable peritoneal
access for patients in whom conventional catheter placement would be difficult
or impossible. Certain patient and extended-catheter characteristics may
contribute to loss from peritonitis.
KEY WORDS: Extended catheter; presternal catheter; titanium connector; exit-site infection; peritonitis; catheter survival; coagulase-negative staphylococcus.
Received 8 January 2009; accepted 25 March 2009.
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