Title: a retrospective study of palindrome symmetrical-tip catheters for chronic hemodialysis access in china; source: ren fail, volume 37, 2015 (941-946) article number: 6 date of publication online: 6 may 2015.If information is provided in the future, a supplemental report will be issued.
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According to literature source of study performed between may 2009 and december 2011, a retrospective study of 284 cases of chronic catheterization in 271 patients treated using symmetrical-tip (n¼118) and/or step-tip (n¼166) hemodialysis catheters was conducted to evaluate the efficacy and the safety of symmetrical-tip dialysis catheters for chronic hemodialysis, compared with a step-tip catheter.Of these catheterizations, 118 were performed using 36/40 cm pre-curved or straight symmetrical-tip catheters including 14 cases where step-tip catheters were changed to symmetrical-tip, and 166 catheterizations were performed using 36/40 cm step-tip catheters.It was stated that during the study period of using step-tiphemodialysis catheters, there were 311 cases of low blood flow with occurrence rate of 6.86 (rates were calculated as a number of events per 1000 catheter days); five of these required catheter withdrawals (including abnormal position dysfunction).It was also on the report that there were two cases of catheter withdrawals due to cuff exposure.
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