{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T01:34:54Z","timestamp":1747186494634,"version":"3.40.5"},"reference-count":17,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2019,6,25]],"date-time":"2019-06-25T00:00:00Z","timestamp":1561420800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2019,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>The high rate of stored preoperative autologous blood wastage is concerning. This study analyzed patients who provided preoperative autologous blood donations (PABDs) for massive bleeding during surgery for placenta previas and low\u2010lying placentas, and investigated the optimal PABD storage volume required to avoid allogeneic transfusion.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Of 386 patients who provided PABDs at our hospital from 2008 to 2013, 269 patients with placenta previas or low\u2010lying placentas were retrospectively analyzed. The PABD storage volumes were stratified into four groups based on the amounts stored, and the allogeneic transfusion usage frequencies were compared.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 124 patients (46.1%) received PABDs and 12 patients (4.5%) received allogeneic transfusions. The average PABD volume wasted was 23\u2009940\u2009mL\/year. The allogeneic transfusion utilization rate was significantly higher in the 1\u2010 to 300\u2010mL group (17.2%) than in the 301\u2010 to 600\u2010mL (1.69%), 601\u2010 to 900\u2010mL (3.82%), and 901\u2010 to 1200\u2010mL (0%) groups (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). The PABD cut\u2010off volume for avoiding allogeneic blood transfusion was 300\u2009mL, and the odds ratio for \u2264300\u2010mL PABD in a multivariate analysis was 14.3 (95% confidence interval 1.3\u2013149.3; <jats:italic>P<\/jats:italic> = 0.03). The maximum surgical blood order schedule was 2.16\u2009units (432\u2009mL), and the surgical blood order equation was 2.15\u2009units (430\u2009mL).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The allogeneic transfusion utilization rate did not differ between the 600\u2010mL group and the groups with higher PABD storage volumes; hence, storing 600\u2009mL of PABD was appropriate for surgery for placenta previas and low\u2010lying placentas.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jog.14044","type":"journal-article","created":{"date-parts":[[2019,6,25]],"date-time":"2019-06-25T20:57:41Z","timestamp":1561496261000},"page":"1843-1850","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Optimal preoperative autologous blood storage volume required in surgeries for placenta previas and low\u2010lying placentas"],"prefix":"10.1111","volume":"45","author":[{"given":"Ayumi","family":"Sakai","sequence":"first","affiliation":[{"name":"Center for Maternal, Fetal and Neonatal Medicine, Saitama Medical Center Saitama Medical University  Kawagoe Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2592-9951","authenticated-orcid":false,"given":"Shigetaka","family":"Matsunaga","sequence":"additional","affiliation":[{"name":"Center for Maternal, Fetal and Neonatal Medicine, Saitama Medical Center Saitama Medical University  Kawagoe Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eishin","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Center for Maternal, Fetal and Neonatal Medicine, Saitama Medical Center Saitama Medical University  Kawagoe Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kouki","family":"Samejima","sequence":"additional","affiliation":[{"name":"Center for 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