{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T19:19:49Z","timestamp":1740165589919,"version":"3.37.3"},"reference-count":17,"publisher":"Georg Thieme Verlag KG","issue":"01","license":[{"start":{"date-parts":[[2023,11,7]],"date-time":"2023-11-07T00:00:00Z","timestamp":1699315200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Asian J Neurosurg"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>\n          Objective\u2003This study aimed to examine potential risk factors associated with cerebrospinal fluid overdrainage after ventriculoperitoneal (VP) shunting.<\/jats:p><jats:p>\n          Materials and Methods\u2003We retrospectively examined the medical records of hydrocephalus patients who underwent VP shunting at a single institution between January 2011 and December 2017 and had a minimum 3-year follow-up. Variables studied included age, gender, hydrocephalus etiology, symptoms, shunt valve, ventricular catheter entry point, and neurosurgical history, including history of external ventricular drainage. Radiographic variables included Evans index, bicaudate index, callosal angle, measurements of frontal lobe thickness, and bifrontal\u2013parietal ratio.<\/jats:p><jats:p>\n          Results\u2003Among the 182 study patients, 11 experienced overdrainage. Age, gender, etiology, symptoms, and surgical history did not significantly differ between patients who experienced overdrainage and those who did not. Evans index, bicaudate index, and callosal angle did not significantly differ between the groups. Measurements of frontal lobe thickness and bifrontal\u2013-parietal ratio were significantly lower in the overdrainage group.<\/jats:p><jats:p>\n          Conclusion\u2003Bifrontal\u2013parietal ratio may be useful to predict overdrainage after VP shunt surgery.<\/jats:p>","DOI":"10.1055\/s-0043-1775729","type":"journal-article","created":{"date-parts":[[2023,11,8]],"date-time":"2023-11-08T00:48:02Z","timestamp":1699404482000},"page":"037-043","source":"Crossref","is-referenced-by-count":0,"title":["Bifrontal\u2013Parietal Ratio: A Novel Risk Factor for Cerebrospinal Fluid Overdrainage after Ventriculoperitoneal Shunting"],"prefix":"10.1055","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4809-4205","authenticated-orcid":false,"given":"Chonnawee","family":"Chaisawasthomrong","sequence":"additional","affiliation":[{"name":"Division of Neurosurgery, Department of Surgery, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9350-8780","authenticated-orcid":false,"given":"Kriangsak","family":"Saetia","sequence":"additional","affiliation":[{"name":"Division of Neurosurgery, Department of Surgery, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2023,11,7]]},"reference":[{"issue":"01","key":"ref1","doi-asserted-by":"crossref","first-page":"15","DOI":"10.3171\/2012.9.PEDS1298","article-title":"Revision rate of pediatric ventriculoperitoneal shunts after 15 years","volume":"11","author":"J J Stone","year":"2013","journal-title":"J Neurosurg Pediatr"},{"issue":"06","key":"ref2","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1159\/000120549","article-title":"Disconnection as a cause of ventriculoperitoneal shunt malfunction in multicomponent shunt systems","volume":"16","author":"E F Aldrich","year":"1990","journal-title":"Pediatr Neurosurg"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1590\/S0004-282X2009000200019","article-title":"Early shunt complications in 46 children with hydrocephalus","volume":"67","author":"M H Braga","year":"2009","journal-title":"Arq Neuropsiquiatr"},{"issue":"06","key":"ref4","doi-asserted-by":"crossref","first-page":"346","DOI":"10.1007\/BF00298282","article-title":"Avoidable factors that contribute to the complications of ventriculoperitoneal shunt in childhood hydrocephalus","volume":"6","author":"A R Choudhury","year":"1990","journal-title":"Childs Nerv Syst"},{"issue":"01","key":"ref5","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1159\/000120818","article-title":"Biodegradation of distal shunt catheters","volume":"21","author":"K Elisevich","year":"1994","journal-title":"Pediatr Neurosurg"},{"issue":"02","key":"ref6","doi-asserted-by":"crossref","first-page":"179","DOI":"10.3171\/jns.1979.50.2.0179","article-title":"Long-term results after ventriculoatrial and ventriculoperitoneal shunting for infantile hydrocephalus","volume":"50","author":"T R Keucher","year":"1979","journal-title":"J Neurosurg"},{"issue":"10","key":"ref7","doi-asserted-by":"crossref","first-page":"2031","DOI":"10.1007\/s00701-018-3654-1","article-title":"One-year outcome of patients with posttraumatic hydrocephalus treated by lumboperitoneal shunt: an observational study from China","volume":"160","author":"T Sun","year":"2018","journal-title":"Acta Neurochir (Wien)"},{"issue":"06","key":"ref8","doi-asserted-by":"crossref","first-page":"1498","DOI":"10.3171\/2013.7.JNS13484","article-title":"Overdrainage shunt complications in idiopathic normal-pressure hydrocephalus and lumbar puncture opening pressure","volume":"119","author":"Q U Khan","year":"2013","journal-title":"J Neurosurg"},{"issue":"04","key":"ref9","doi-asserted-by":"crossref","first-page":"545","DOI":"10.1016\/j.jmii.2017.06.002","article-title":"Risk factors and outcomes of cerebrospinal fluid overdrainage in HIV-negative patients with cryptococcal meningitis after the ventriculoperitoneal shunting procedure","volume":"51","author":"C W Hung","year":"2018","journal-title":"J Microbiol Immunol Infect"},{"issue":"03","key":"ref10","doi-asserted-by":"crossref","first-page":"224","DOI":"10.1097\/00127927-200207030-00010","article-title":"Complications of ventricular shunts","volume":"7","author":"B E Weprin","year":"2001","journal-title":"Tech in Neurosurg"},{"issue":"03","key":"ref11","doi-asserted-by":"crossref","first-page":"200","DOI":"10.1016\/0090-3019(91)90072-H","article-title":"Hydrocephalus: overdrainage by ventricular shunts. 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