{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T22:15:18Z","timestamp":1787004918827,"version":"build-2736575974"},"reference-count":32,"publisher":"Georg Thieme Verlag KG","issue":"02","license":[{"start":{"date-parts":[[2024,6,3]],"date-time":"2024-06-03T00:00:00Z","timestamp":1717372800000},"content-version":"vor","delay-in-days":2,"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":[[2024,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Introduction\u2003Optic nerve sheath diameter (ONSD) measured using ultrasonography has been widely used as a surrogate marker of elevated intracranial pressure. However, literature is sparse on the correlation between ONSD and ventriculoperitoneal (VP) shunt function, especially in adults with hydrocephalus. Our study was designed to assess the correlation between ONSD measured using ultrasonography before and 12\u2009hours after VP shunt placement and the success of VP shunt placement assessed using computed tomography (CT) of the brain.<\/jats:p>\n                  <jats:p>Materials and Methods\u2003Fifty-one patients between 16 and 60 years of age, with obstructive hydrocephalus scheduled for VP shunt surgery were included in this prospective, observational study. ONSD measurements were obtained from both eyes prior to induction of anesthesia, immediately after the surgery, and at 6, 12, and 24\u2009hours after the surgery. An average of three readings was obtained from each eye. Cerebrospinal fluid (CSF) opening pressure was noted after entry into the lateral ventricle. Noncontrast CT (NCCT) brain was obtained 12\u2009hours after the surgery and was interpreted by the same neurosurgeon for signs of successful VP shunt placement.<\/jats:p>\n                  <jats:p>Results\u2003There was a significant reduction in ONSD in the postoperative period compared to ONSD measured preoperatively. The average ONSD (mean\u2009\u00b1\u2009standard deviation) measured prior to induction of anesthesia, immediately after the surgery, and at 6, 12, and 24\u2009hours after the surgery was 5.71\u2009\u00b1\u20090.95, 5.20\u2009\u00b1\u20090.84, 5.06\u2009\u00b1\u20090.79, 4.90\u2009\u00b1\u20090.79, and 4.76\u2009\u00b1\u20090.75\u2009mm, respectively. The mean CSF opening pressure was 19.6\u2009\u00b1\u20096.9\u2009mm Hg. Postoperative NCCT brain revealed misplacement of the shunt tip in only one patient.<\/jats:p>\n                  <jats:p>Conclusion\u2003ONSD measured using ultrasonography may be used as a reliable indicator of VP shunt function in adults with obstructive hydrocephalus.<\/jats:p>","DOI":"10.1055\/s-0044-1786701","type":"journal-article","created":{"date-parts":[[2024,6,3]],"date-time":"2024-06-03T19:19:31Z","timestamp":1717442371000},"page":"242-249","source":"Crossref","is-referenced-by-count":4,"title":["Comparison of Optic Nerve Sheath Diameter (ONSD) Measurements Obtained from USG Before and After Placement of Ventriculoperitoneal Shunt in Obstructive Hydrocephalus as a Surrogate Marker for Adequacy of Shunt Function: A Prospective Observational Study"],"prefix":"10.1055","volume":"19","author":[{"given":"M. S. Mohamed","family":"Salih","sequence":"additional","affiliation":[{"name":"Department of Neuroanesthesiology, All India Institute of Medical Sciences, New Delhi, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adinarayanan","family":"Sethuramachandran","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4497-6772","authenticated-orcid":false,"given":"Prasanna Udupi","family":"Bidkar","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9750-9484","authenticated-orcid":false,"given":"Ankita","family":"Dey","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Critical Care, All India Institute of Medical Sciences, Bathinda, Bathinda, Punjab, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gopikrishnan","family":"R.","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adethen","family":"Gunasekaran","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vivek","family":"Chandar","sequence":"additional","affiliation":[{"name":"Department of Anesthesiology and Critical Care, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2024,6,3]]},"reference":[{"issue":"01","key":"ref1","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/j.spen.2009.01.002","article-title":"A contemporary definition and classification of hydrocephalus","volume":"16","author":"H L Rekate","year":"2009","journal-title":"Semin Pediatr Neurol"},{"issue":"10","key":"ref2","doi-asserted-by":"crossref","first-page":"e0204926","DOI":"10.1371\/journal.pone.0204926","article-title":"Age-specific global epidemiology of hydrocephalus: systematic review, metanalysis and global birth surveillance","volume":"13","author":"A M 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