Author:
Brisman Ronald,Schneider Sanford,Carter Sidney
Abstract
✓ A simplified technique for subarachnoid cerebrospinal fluid infusion of Ringer's lactate is described and evaluated as a method for determining shunt patency. An infusion index (change in pressure divided by volume infused) of 11 or greater is highly suggestive of shunt occlusion while an index of 6 or less strongly suggests a patent shunt. Further accuracy results when a baseline index and pressure-volume-time curve are obtained at a time of known shunt patency and compared with subsequent infusions. Using these criteria, the proper evaluation of shunt patency has been made in 18 out of 19 verified shunt problems.
Publisher
Journal of Neurosurgery Publishing Group (JNSPG)
Cited by
10 articles.
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