Abstract
From 1981 to September 1983, 72 continuous CSF measurements were performed on 65 children with suspected shunt dysfunction. The pressure was 21 times > 180 (Group 1), 7 times 135-180 (Group 2) and 44 times < 135mmH2O (Group 3). Shunt revision seemed indicated in all of Group 1, in 4 of Group 2 and in 3 of Group 3. The 28 children operated on following manometry amount to 46% of all patients revised during the same time. Headache, vomiting, some neurological and non-specific signs were likewise observed in all 3 groups. The palpable valve function was only exceptionally abnormal in Group 1, but abnormal in 1/3 in Group 3. The shunt function was finally evaluated in Group 1 to 3 as follows: 39% shunt revision indicated, 30.5% functioning shunt, 19.5% temporary or intermittent shunt dysfunction, 10% temporary oligoliquorrhea (over drainage), 1 % arrested hydrocephalus. The accuracy of the judgment was confirmed in all but 4 by follow-ups; in proximal occlusion, CSF leakages an multiple shunts, seemingly normal CSF pressure values may be obtained (10% of all measurements).
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