{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,18]],"date-time":"2026-06-18T16:42:17Z","timestamp":1781800937264,"version":"3.54.5"},"reference-count":7,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2014,12,16]],"date-time":"2014-12-16T00:00:00Z","timestamp":1418688000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2015,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>The purpose of this study was to prospectively estimate the incidence of spontaneous twin anemia\u2013polycythemia sequence (<jats:styled-content style=\"fixed-case\">TAPS<\/jats:styled-content>) in monochorionic\u2013diamniotic twin pregnancies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We prospectively examined umbilical cord hemoglobin (<jats:styled-content style=\"fixed-case\">Hb<\/jats:styled-content>) and reticulocyte count of consecutive monochorionic\u2013diamniotic twin pregnancies delivered at <jats:styled-content style=\"fixed-case\">S<\/jats:styled-content>eirei <jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>amamatsu General Hospital from <jats:styled-content style=\"fixed-case\">D<\/jats:styled-content>ecember 2006 to <jats:styled-content style=\"fixed-case\">S<\/jats:styled-content>eptember 2013. We excluded cases of twin\u2013twin transfusion syndrome, intrauterine fetal demise, and missing data (Hb and reticulocyte count missing from the medical record). <jats:styled-content style=\"fixed-case\">TAPS<\/jats:styled-content> was diagnosed using the postnatal criteria of intertwin <jats:styled-content style=\"fixed-case\">Hb<\/jats:styled-content> difference &gt;8.0\u2009g\/dL and reticulocyte count ratio &gt;1.7. Acute feto\u2010fetal hemorrhage was defined as Hb difference &gt;7\u2009g\/dL and reticulocyte count ratio &lt;1.7.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 185 monochorionic\u2013diamniotic twin pregnancies were included in this study. Three fulfilled the diagnostic criteria for postnatal <jats:styled-content style=\"fixed-case\">TAPS<\/jats:styled-content>, and one fulfilled the diagnostic criteria for acute feto\u2010fetal hemorrhage.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The incidence of spontaneous <jats:styled-content style=\"fixed-case\">TAPS<\/jats:styled-content> in monochorionic\u2013diamniotic twin pregnancies was 1.6% (3\/185) at <jats:styled-content style=\"fixed-case\">S<\/jats:styled-content>eirei <jats:styled-content style=\"fixed-case\">H<\/jats:styled-content>amamatsu General Hospital.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jog.12641","type":"journal-article","created":{"date-parts":[[2014,12,16]],"date-time":"2014-12-16T08:27:50Z","timestamp":1418718470000},"page":"857-860","source":"Crossref","is-referenced-by-count":19,"title":["Incidence of spontaneous twin anemia\u2013polycythemia sequence in monochorionic\u2013diamniotic twin pregnancies: Single\u2010center prospective study"],"prefix":"10.1111","volume":"41","author":[{"given":"Tae","family":"Yokouchi","sequence":"first","affiliation":[{"name":"Division of Obstetrics and Perinatology Maternal and Perinatal Care Center Seirei Hamamatsu General Hospital  Shizuoka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takeshi","family":"Murakoshi","sequence":"additional","affiliation":[{"name":"Division of Obstetrics and Perinatology Maternal and Perinatal Care Center Seirei Hamamatsu General Hospital  Shizuoka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Mishima","sequence":"additional","affiliation":[{"name":"Division of Obstetrics and Perinatology Maternal and Perinatal Care Center Seirei Hamamatsu General Hospital  Shizuoka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroko","family":"Yano","sequence":"additional","affiliation":[{"name":"Division of Obstetrics and Perinatology Maternal and Perinatal Care Center Seirei Hamamatsu General Hospital  Shizuoka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Madoka","family":"Ohashi","sequence":"additional","affiliation":[{"name":"Division of Obstetrics and Perinatology Maternal and Perinatal Care Center Seirei Hamamatsu General Hospital  Shizuoka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Suzuki","sequence":"additional","affiliation":[{"name":"Division of Obstetrics and Perinatology Maternal and Perinatal Care Center Seirei Hamamatsu General Hospital  Shizuoka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Shinno","sequence":"additional","affiliation":[{"name":"Division of Obstetrics and Perinatology Maternal and Perinatal Care Center Seirei Hamamatsu General Hospital  Shizuoka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mitsuru","family":"Matsushita","sequence":"additional","affiliation":[{"name":"Division of Obstetrics and Perinatology Maternal and Perinatal Care Center Seirei Hamamatsu General Hospital  Shizuoka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Satoru","family":"Nakayama","sequence":"additional","affiliation":[{"name":"Division of Obstetrics and Perinatology Maternal and Perinatal Care Center Seirei Hamamatsu General Hospital  Shizuoka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuichi","family":"Torii","sequence":"additional","affiliation":[{"name":"Division of Obstetrics and Perinatology Maternal and Perinatal Care Center Seirei Hamamatsu General Hospital  Shizuoka 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