{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T19:52:36Z","timestamp":1792785156381,"version":"4.5.0"},"reference-count":17,"publisher":"Georg Thieme Verlag KG","issue":"10","funder":[{"name":"Gauss Surgical, Inc."}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Perinatol"],"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:p>Objective\u2003The aim of the study is to compare quantified blood loss measurement (QBL) using an automated system (Triton QBL, Menlo Park, CA) with visual blood loss estimation (EBL) during vaginal delivery.<\/jats:p>\n                  <jats:p>Study Design\u2003During 274 vaginal deliveries, both QBL and EBL were determined. The automated system batch weighs blood containing sponges, towels, pads, and other supplies and automatically subtracts their dry weights and also the measured amount of amniotic fluid. Each method was performed independently, and clinicians were blinded to the device's results.<\/jats:p>\n                  <jats:p>Results\u2003Median QBL (339\u2009mL [217\u2013515]) was significantly greater than median EBL (300\u2009mL [200\u2013350]; p\u2009&lt;\u20090.0001). The Pearson's correlation between EBL and QBL was poor (r\u2009=\u20090.520) and the Bland\u2013Altman's limits of agreement were wide (&gt;900\u2009mL). QBL measured blood loss &gt;500\u2009mL occurred in 73 (26.6%) patients compared with 14 (5.1%) patients using visual estimation (p\u2009&lt;\u20090.0001). QBL\u2009\u2265\u2009 1,000\u2009mL was recorded in 11 patients (4.0%), whereas only one patient had an EBL blood loss of 1,000\u2009mL and none had EBL &gt;1,000\u2009mL (p\u2009=\u20090.002).<\/jats:p>\n                  <jats:p>Conclusion\u2003Automated QBL recognizes more patients with excessive blood loss than visual estimation. To realize the value of QBL, clinicians must accept the inadequacy of visual estimation and implement protocols based on QBL values. Further studies of clinical outcomes related to QBL are needed.<\/jats:p>\n                  <jats:p>Key Points<\/jats:p>","DOI":"10.1055\/s-0040-1701507","type":"journal-article","created":{"date-parts":[[2020,2,12]],"date-time":"2020-02-12T20:12:05Z","timestamp":1581538325000},"page":"1031-1035","source":"Crossref","is-referenced-by-count":20,"title":["Automated Quantification of Blood Loss versus Visual Estimation in 274 Vaginal Deliveries"],"prefix":"10.1055","volume":"38","author":[{"given":"Andrew F.","family":"Rubenstein","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Hackensack Meridian Health, Hackensack, New Jersey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stacy","family":"Zamudio","sequence":"additional","affiliation":[{"name":"Division of Maternal-Fetal Medicine and Surgery, Department of Obstetrics and Gynecology, Hackensack Meridian Health, Hackensack, New Jersey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claudia","family":"Douglas","sequence":"additional","affiliation":[{"name":"Institute for Evidence Based Practice and Nursing Research, Hackensack University Medical Center, Hackensack Meridian Health, Hackensack, New Jersey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sharon","family":"Sledge","sequence":"additional","affiliation":[{"name":"Center for Bloodless Medicine and Surgery, Department of Patient Safety and Quality, Hackensack Meridian Health, Hackensack, New Jersey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert L.","family":"Thurer","sequence":"additional","affiliation":[{"name":"Medical Department, Gauss Surgical, Inc., Menlo Park, 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