{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T20:02:35Z","timestamp":1787169755712,"version":"build-2736575974"},"reference-count":15,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"4","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2022,4]]},"abstract":"<jats:sec>\n                    <jats:title>Background and Aims:<\/jats:title>\n                    <jats:p>Bedside ultrasound (US) is used to evaluate gastric residual volume (GRV) and assess aspiration risk. We examined the accuracy of US-guided measurement of GRV using Perlas\u2019s formula, by two trained anaesthesiologists, in patients who had consumed different types and volumes of fluids.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Patients with no risk factors for delayed gastric emptying were included. Each assessor independently determined the baseline US-guided GRV. The patients were randomly allocated to receive no drink or 100 or 200 mL of water or milk. US-guided GRV was re-assessed within 5 min after the intervention. Investigators were blinded to the measurements performed by each other and to the randomisation arm. The primary outcome was the agreement between actual volumes consumed and estimated change in GRV.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      Agreement between actual volume consumed and estimated change in GRV was poor [Intra-class correlation coefficient (ICC) 0.46, 95% confidence interval (CI) 0.09 to 0.72;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.09 for assessor 1 and ICC 0.37; 95% CI 0.02 to 0.66;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.03 for assessor 2].\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>US-guided GRV measurements using Perlas\u2019s formula, performed by trained anaesthesiologists may not be a reliable measure of GRV.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/ija.ija_783_21","type":"journal-article","created":{"date-parts":[[2022,4,20]],"date-time":"2022-04-20T02:57:59Z","timestamp":1650423479000},"page":"255-259","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":6,"title":["Ultrasound-guided estimation of gastric residual volume using Perlas\u2019s formula: A validation study in patients"],"prefix":"10.4103","volume":"66","author":[{"given":"Sayali S.","family":"Khandekar","sequence":"first","affiliation":[{"name":"Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeson R.","family":"Doctor","sequence":"additional","affiliation":[{"name":"Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shilpa K.","family":"Awaskar","sequence":"additional","affiliation":[{"name":"Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nidhin K.","family":"Alex","sequence":"additional","affiliation":[{"name":"Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lipika R.","family":"Medha","sequence":"additional","affiliation":[{"name":"Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Priya","family":"Ranganathan","sequence":"additional","affiliation":[{"name":"Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, Maharashtra, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2022,4,20]]},"reference":[{"key":"B1-20240902","doi-asserted-by":"crossref","first-page":"1086","DOI":"10.1097\/ALN.0b013e31820dee48","article-title":"Clinical assessment of the ultrasonographic measurement of antral area for estimating preoperative gastric content and volume","volume":"114","author":"Bouvet","year":"2011","journal-title":"Anaesthesiology"},{"key":"B2-20240902","doi-asserted-by":"crossref","first-page":"82","DOI":"10.1097\/ALN.0b013e3181a97250","article-title":"Ultrasound assessment of gastric content and 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