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The purpose of this study was to determine the overall timing of VP shunting and its failure after craniotomy for brain tumors in adults. The authors also wished to explore risk factors for early VP shunt failure (within 90\u00a0days). A population-based consecutive patient cohort of all craniotomies for intracranial tumors leading to VP shunt dependency in adults (&gt;\u200918\u00a0years) from 2004 to 2013 was studied. Patients with pre-existing VP shunts prior to craniotomy were excluded. The survival time of VP shunts, i.e., the shunt longevity, was calculated from the day of shunt insertion post-craniotomy for a brain tumor until the day of shunt revision requiring replacement or removal of the shunt system. Out of 4774 craniotomies, 85 patients became VP shunt-dependent (1.8% of craniotomies). Median time from craniotomy to VP shunting was 1.9\u00a0months. Patients with hydrocephalus prior to tumor resection (<jats:italic>N<\/jats:italic>\u2009=\u200939) had significantly shorter time to shunt insertion than those without (<jats:italic>N<\/jats:italic>\u2009=\u200946) (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001), but there was no significant difference with respect to early shunt failure. Median time from shunt insertion to shunt failure was 20\u00a0days (range 1\u201335). At 90\u00a0days, 17 patients (20%) had confirmed shunt failure. Patient age, sex, tumor location, primary\/secondary craniotomy, extra-axial\/intra-axial tumor,\u00a0ventricular entry, post-craniotomy bleeding, and infection did not show statistical significance. The risk of early shunt failure (within 90\u00a0days) of shunts after craniotomies for brain tumors was 20%. This study can serve as benchmark for future studies.<\/jats:p>","DOI":"10.1007\/s10143-021-01549-7","type":"journal-article","created":{"date-parts":[[2021,4,27]],"date-time":"2021-04-27T07:18:25Z","timestamp":1619507905000},"page":"479-490","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Risk of early failure of VP shunts implanted for hydrocephalus after craniotomies for brain tumors in adults"],"prefix":"10.1007","volume":"45","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4287-4545","authenticated-orcid":false,"given":"Sayied Abdol Mohieb","family":"Hosainey","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John K.","family":"Hald","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Torstein R.","family":"Meling","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,4,27]]},"reference":[{"key":"1549_CR1","doi-asserted-by":"publisher","first-page":"145","DOI":"10.3171\/2017.8.JNS17399","volume":"130","author":"IA Anderson","year":"2018","unstructured":"Anderson IA, Saukila LF, Robins JMW, Akhunbay-Fudge CY, Goodden JR, Tyagi AK, Phillips N, Chumas PD (2018) Factors associated with 30-day ventriculoperitoneal shunt failure in pediatric and adult patients. 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