{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,14]],"date-time":"2026-07-14T21:05:40Z","timestamp":1784063140256,"version":"3.55.0"},"reference-count":17,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1979,4]]},"abstract":"<jats:p content-type=\"fine-print\">\u2713 Forty patients with clinical evidence of normal-pressure hydrocephalus were studied by monitoring intraventricular pressure during a 24-hour period, and by a lumboventricular perfusion test for measurement of the conductance to outflow of cerebrospinal fluid (CSF). The purpose of the study was to investigate whether there is a relationship between intraventricular pressure and conductance to outflow of CSF, and whether it is possible to use the results from pressure monitoring in the selection of patients who may be expected to benefit from shunting therapy. The conductance to outflow was used as an evaluation factor in the selection of patients to be treated by a shunt.<\/jats:p>\n<jats:p content-type=\"fine-print\">The conductance to CSF outflow differed by twelvefold between the lowest and highest values. The level of resting intraventricular pressure was within normal limits in all patients. Accordingly, there was no evidence of a relationship between conductance to outflow and intraventricular pressure. So-called B-waves were seen more frequently in patients with decreased conductance to outflow, but were also present in patients with high conductance to outflow. Therefore, the presence of B-waves does not imply a low conductance to outflow of CSF.<\/jats:p>","DOI":"10.3171\/jns.1979.50.4.0489","type":"journal-article","created":{"date-parts":[[2009,5,7]],"date-time":"2009-05-07T15:36:32Z","timestamp":1241710592000},"page":"489-493","source":"Crossref","is-referenced-by-count":39,"title":["Intracranial pressure and conductance to outflow of cerebrospinal fluid in normal-pressure hydrocephalus"],"prefix":"10.3171","volume":"50","author":[{"given":"Svend Erik","family":"B\u00f8rgesen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Flemming","family":"Gjerris","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S\u00f8ren Claus","family":"S\u00f8rensen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1","series-title":"Acta Neurol Scand","first-page":"88","article-title":"The resistance to cerebrospinal fluid absorption in humans. A method of evaluation by lumbo-ventricular perfusion, with particular reference to normal pressure hydrocephalus.","volume":"57","author":"B\u00f8rgesen","year":"1978"},{"key":"b2","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"376","DOI":"10.3171\/jns.1974.40.3.0376","article-title":"Intracranial pressure in patients with dementia and communicating hydrocephalus.","volume":"40","author":"Chawla","year":"1974"},{"key":"b3","series-title":"Arch Neurol","doi-asserted-by":"publisher","first-page":"299","DOI":"10.1001\/archneur.1973.00490290039003","article-title":"Presenile dementia.","volume":"29","author":"Coblentz","year":"1973"},{"key":"b4","series-title":"J Neurol Neurosurg Psychiatry","doi-asserted-by":"publisher","first-page":"736","DOI":"10.1136\/jnnp.40.8.736","article-title":"Hydrocephalus as a cause of dementia: evaluation by computerized tomography and intracranial pressure monitoring.","volume":"40","author":"Crockard","year":"1977"},{"key":"b5","series-title":"Brain","doi-asserted-by":"publisher","first-page":"707","DOI":"10.1093\/brain\/91.4.707","article-title":"Formation and absorption of cerebrospinal fluid in man.","volume":"91","author":"Cutler","year":"1968"},{"key":"b6","series-title":"Predicting the results of ventricular shunting in normal pressure hydrocephalus by lumbo-ventricular perfusion test.","author":"Gjerris"},{"key":"b7","series-title":"Lumbar disc. Adult hydrocephalus.","first-page":"168","article-title":"Long-term measurements of the intraventricular pressure in patients with normal pressure hydrocephalus","author":"Gruss","year":"1977"},{"key":"b8","series-title":"J Neurol Neurosurg Psychiatry","doi-asserted-by":"publisher","first-page":"630","DOI":"10.1136\/jnnp.40.7.630","article-title":"Differentiation of communicating hydrocephalus and presenile dementia by continuous recording of cerebrospinal fluid pressure.","volume":"40","author":"Hartmann","year":"1977"},{"key":"b9","series-title":"Brain","doi-asserted-by":"publisher","first-page":"679","DOI":"10.1093\/brain\/93.4.679","article-title":"Relationship between cerebrospinal fluid formation, absorption and pressure in human hydrocephalus.","volume":"93","author":"Lorenzo","year":"1970"},{"key":"b10","series-title":"Acta Psychiatr Scand","first-page":"1","article-title":"Continuous recording and control of ventricular fluid pressure in neurosurgical practice.","volume":"36","author":"Lundberg","year":"1960"},{"key":"b11","series-title":"J Neurosurg","first-page":"523","article-title":"Compartmental analysis of compliance and outflow resistance of the cerebrospinal system.","volume":"43","author":"Marmarou","year":"1976"},{"key":"b12","series-title":"Neurology","doi-asserted-by":"publisher","first-page":"1037","DOI":"10.1212\/WNL.21.10.1037","article-title":"An evaluation of the cerebrospinal fluid infusion test for hydrocephalus.","volume":"21","author":"Nelson","year":"1971"},{"key":"b13","series-title":"Lumbar disc. Adult hydrocephalus.","first-page":"161","article-title":"Pre- and postoperative evaluation of hydrocephalus using the infusion test","author":"Sprung","year":"1977"},{"key":"b14","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"463","DOI":"10.3171\/jns.1974.41.4.0463","article-title":"Normal-pressure hydrocephalus. Predicting the results of cerebrospinal fluid shunting.","volume":"41","author":"Stein","year":"1974"},{"key":"b15","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"532","DOI":"10.3171\/jns.1977.47.4.0532","article-title":"The physiological basis of intracranial pressure change with progressive epidural brain compression. An experimental evaluation in cats.","volume":"47","author":"Sullivan","year":"1977"},{"key":"b16","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"258","DOI":"10.3171\/jns.1975.42.3.0258","article-title":"Use of long-term intracranial pressure measurement to assess hydrocephalic patients prior to shunt surgery.","volume":"42","author":"Symon","year":"1975"},{"key":"b17","series-title":"Neurology","doi-asserted-by":"publisher","first-page":"706","DOI":"10.1212\/WNL.23.7.706","article-title":"Diagnostic tests in normal pressure hydrocephalus.","volume":"23","author":"Wolinsky","year":"1973"}],"container-title":["Journal of Neurosurgery"],"original-title":[],"link":[{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/50\/4\/article-p489.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/50\/4\/article-p489.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/thejns.org\/downloadpdf\/journals\/j-neurosurg\/50\/4\/article-p489.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,3,26]],"date-time":"2023-03-26T20:43:39Z","timestamp":1679863419000},"score":1,"resource":{"primary":{"URL":"https:\/\/thejns.org\/view\/journals\/j-neurosurg\/50\/4\/article-p489.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1979,4]]},"references-count":17,"journal-issue":{"issue":"4"},"URL":"https:\/\/doi.org\/10.3171\/jns.1979.50.4.0489","relation":{},"ISSN":["0022-3085"],"issn-type":[{"value":"0022-3085","type":"print"}],"subject":[],"published":{"date-parts":[[1979,4]]}}}