Increased risk of distal ventriculoperitoneal shunt obstruction associated with slit valves or distal slits in the peritoneal catheter

摘要: The authors describe a relationship between the presence of distal shunt catheter side-wall slits and obstruction in single-surgeon series ventriculoperitoneal (VP) revisions. Between 1985 1996, 168 operations for VP revision were performed by senior author (J.W.C.) 71 patients. Indications included 140 operations; overdrainage or underdrainage requiring change valve 17 inadequate length tubing resulting end no longer reaching peritoneum five ventricular wrong ventricle space, repositioning disconnected broken one operation. Of instances obstruction, blockage occurred at 108 (77.1%), peritoneal (12.1%), 14 (10%), mechanism (not including slit valves) (0.8%). Thus, was obstructed 31 (22.1%) cases malfunction. In every case which obstructed, some form found: either an otherwise closed side open catheter. No found when simple open-ended tube with accompanying (0 55). It is concluded that catheters shunts are associated greater incidence obstruction.