{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390282679923967232.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.11437/sanpunosinpo.55.11"}},{"identifier":{"@type":"NAID","@value":"130001223533"}},{"identifier":{"@type":"URI","@value":"https://search.jamas.or.jp/link/ui/2003167395"}}],"dc:title":[{"@language":"ja","@value":"骨盤位における胎位変換に影響する因子の臨床統計学的検討"},{"@language":"en","@value":"Clinicostatistical studies on factors influencing spontaneous cephalic version of breech presentation"}],"dc:language":"ja","description":[{"type":"abstract","notation":[{"@language":"en","@value":"Singleton breech presentations are identified in 30% of second trimester pregnancies, but the incidence of breech presentations decreases to 3∼4% in the last trimester due to the spontaneous cephalic version. We assumed that if spontaneous cephalic version is inhibited, breech presentation will persist until the last trimester. In this study, the contributory factors affecting spontaneous cephalic version were assessed. We investigated 73 singleton breech presentations identified at 25th to 33rd gestational weeks. The relationship between spontaneous cephalic version and the following factors was analyzed ; maternal factors (maternal physique, size of pelvic cavity, angle of pelvic inclination and parity), fetal factors (presentation and fetal size) and fetal environmental factors (AFI, placental site, length and coils of the umbilical cord). Before delivery, 68 fetuses (93%) were converted to cephalic presentation until the 34th gestational weeks and 5 (7%) remained in breech presentation. Regarding the maternal factors, mean age, height, parity and size of pelvic cavity in both groups were similar, but body weight, body mass index (BMI) and the angle of pelvic inclination were larger in non - cephalic version group than those in cephalic version group. Fetal factors studied revealed that the percentage of frank breech presentation was higher in non - cephalic version group than that in cephalic version group. EFBW and BPD in non - cephalic version group were significantly larger than those in cephalic version group. Fetal environmental factors such as AFI, coils of the umbilical cord and thickness of placenta were similar in both groups, but the umbilical cord length in non - cephalic version group was shorter by 4cm on the average than that in cephalic version group. The incidence of placental site involving the uterine horn was obviously higher in non - cephalic version group than that in cephalic version group. The mean age at delivery in non - cephalic version group was significantly earlier than that in cephalic version group, although the mean birth weight was similar in both groups. The percentage of cesarean section in the former group was significantly higher than that in the latter group.<br> In conclusion, spontaneous cephalic version was less likely to be seen in pregnancies with maternal obesity, large angle of pelvic inclination, frank breech presentation, big fetus, short umbilical cord and implantation site involving the uterine horn. [Adv Obstet Gynecol,55(1):11-17,2003(H.15.2)]<br>"},{"@language":"ja","@value":"単胎における骨盤位は，妊娠中期で約30％にみられるが，大半が自己回転し，妊娠末期には3～4％まで減少する．妊娠末期にみられる骨盤位は本来ならば自己回転するものが，なんらかの抑制因子により生じるものと推測される．そこで，自己回転抑制因子を明らかにするべく母体因子と胎児因子について臨床的検討を加えた．<br>　妊娠25週から33週の間に骨盤位と診断された単胎妊娠73例のうち，自己回転群と非自己回転群について，母体因子（母体体型，骨盤の大きさと傾斜角，分娩回数），胎児因子（胎位，胎児の大きさ），胎児付属物因子（羊水量，臍帯長，臍帯巻絡の有無，胎盤付着部位）などを比較検討し，自己回転との関連性を分析した．73例中68例が妊娠34週までに自己回転し，自己回転率は93％，非自己回転率が7％であった．母体因子のうち母体年齢，身長，分娩回数，骨盤の大きさに関しては自己回転群と非自己回転群の間で差を認めなかったが，母体体重，BMI，骨盤傾斜角に関しては非自己回転群の方が大きい傾向にあった．胎児因子のうち胎位に関しては，非自己回転群で単殿位の比率が高い傾向を示したが，有意差は認められなかった．診断時平均EFBWとBPDはともに非自己回転群で有意に高値であった．胎児付属物因子のうち羊水量，臍帯巻絡の有無，胎盤の厚みに関しては自己回転群と非自己回転群で差を認めなかったが，臍帯長は非自己回転群で自己回転群に比して平均4cm短かった．胎盤付着部位は非自己回転群で子宮角付着の頻度が明らかに高かった．平均分娩週数は非自己回転群で有意に早かったが，平均出生児体重は両群で差を認めなかった．分娩様式に関しては，非自己回転群で帝王切開術の比率が有意に高かった．<br>　以上の成績より，骨盤位における自己回転を抑制する因子としては，母体の肥満と大きい骨盤傾斜角，胎児が単殿位であること，週数に比して大きい胎児，短い臍帯長，子宮角付着胎盤であることが推察される．症例ごとにこれらの因子を詳細に分析し，個々の症例に適した管理を行うことは骨盤位妊娠を適切にマネージメントするうえできわめて重要であり，妊娠34週以前にあえて外回転術を全症例に施行する必要性はないと思われる．〔産婦の進歩55（1）：11-17，2003（平成15年2月）〕<br>"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410282679923967233","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000021872593"}],"foaf:name":[{"@language":"ja","@value":"早川 陽子"},{"@language":"en","@value":"HAYAKAWA Yoko"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Obstetrics and Gynecology, Takatsuki Hospital"},{"@language":"ja","@value":"高槻病院産婦人科"}]},{"@id":"https://cir.nii.ac.jp/crid/1410282679923967232","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000021872597"}],"foaf:name":[{"@language":"ja","@value":"辻本 大治"},{"@language":"en","@value":"TSUJIMOTO Daiji"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Obstetrics and Gynecology, Takatsuki Hospital"},{"@language":"ja","@value":"高槻病院産婦人科"}]},{"@id":"https://cir.nii.ac.jp/crid/1410282679923967234","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000021872601"}],"foaf:name":[{"@language":"ja","@value":"大石 哲也"},{"@language":"en","@value":"OHISHI Tetsuya"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Obstetrics and Gynecology, Takatsuki Hospital"},{"@language":"ja","@value":"高槻病院産婦人科"}]},{"@id":"https://cir.nii.ac.jp/crid/1030003658353338624","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"80030922"},{"@type":"NRID","@value":"1000080030922"},{"@type":"NRID","@value":"9000006078717"},{"@type":"NRID","@value":"9000364030105"},{"@type":"NRID","@value":"9000364036383"},{"@type":"NRID","@value":"9000364166088"},{"@type":"NRID","@value":"9000364166341"},{"@type":"NRID","@value":"9000363947453"},{"@type":"NRID","@value":"9000364010959"},{"@type":"NRID","@value":"9000364007003"},{"@type":"NRID","@value":"9000364360492"},{"@type":"NRID","@value":"9000364103296"},{"@type":"NRID","@value":"9000364079385"},{"@type":"NRID","@value":"9000364123005"},{"@type":"NRID","@value":"9000364169806"},{"@type":"NRID","@value":"9000364180325"},{"@type":"NRID","@value":"9000021860325"},{"@type":"NRID","@value":"9000021847795"},{"@type":"NRID","@value":"9000021844732"},{"@type":"NRID","@value":"9000021855144"},{"@type":"NRID","@value":"9000020224867"},{"@type":"NRID","@value":"9000350547050"},{"@type":"NRID","@value":"9000256133131"},{"@type":"NRID","@value":"9000255733379"},{"@type":"NRID","@value":"9000007742394"},{"@type":"NRID","@value":"9000364162509"},{"@type":"NRID","@value":"9000364032019"},{"@type":"NRID","@value":"9000363953333"},{"@type":"NRID","@value":"9000363962078"},{"@type":"NRID","@value":"9000364120684"},{"@type":"NRID","@value":"9000364054437"},{"@type":"NRID","@value":"9000364009489"},{"@type":"NRID","@value":"9000364209368"},{"@type":"NRID","@value":"9000364138310"},{"@type":"NRID","@value":"9000364154178"},{"@type":"NRID","@value":"9000364081722"},{"@type":"NRID","@value":"9000006064585"},{"@type":"NRID","@value":"9000020243376"},{"@type":"NRID","@value":"9000021872605"},{"@type":"NRID","@value":"9000255734129"},{"@type":"NRID","@value":"9000018072181"},{"@type":"NRID","@value":"9000364076711"},{"@type":"NRID","@value":"9000002229896"},{"@type":"NRID","@value":"9000364184327"},{"@type":"NRID","@value":"9000364056353"},{"@type":"NRID","@value":"9000364023226"},{"@type":"NRID","@value":"9000364060962"},{"@type":"NRID","@value":"9000364156946"},{"@type":"NRID","@value":"9000364202966"},{"@type":"NRID","@value":"9000364180178"},{"@type":"NRID","@value":"9000262352794"},{"@type":"NRID","@value":"9000021842713"},{"@type":"NRID","@value":"9000021829838"},{"@type":"NRID","@value":"9000021834177"},{"@type":"NRID","@value":"9000021840234"},{"@type":"NRID","@value":"9000256131458"},{"@type":"NRID","@value":"9000256130146"},{"@type":"NRID","@value":"9000256130486"},{"@type":"NRID","@value":"9000019227757"},{"@type":"NRID","@value":"9000007757182"},{"@type":"NRID","@value":"9000364027954"},{"@type":"NRID","@value":"9000364194355"},{"@type":"NRID","@value":"9000364092772"},{"@type":"NRID","@value":"9000021852662"},{"@type":"NRID","@value":"9000020393138"},{"@type":"NRID","@value":"9000021843592"},{"@type":"NRID","@value":"9000252860156"},{"@type":"NRID","@value":"9000256133285"},{"@type":"NRID","@value":"9000256133150"},{"@type":"NRID","@value":"9000007755388"},{"@type":"NRID","@value":"9000364018009"},{"@type":"NRID","@value":"9000363961929"},{"@type":"NRID","@value":"9000364050402"},{"@type":"NRID","@value":"9000364189173"},{"@type":"NRID","@value":"9000364166031"},{"@type":"NRID","@value":"9000364096995"},{"@type":"NRID","@value":"9000021841104"},{"@type":"NRID","@value":"9000020986426"},{"@type":"NRID","@value":"9000392746821"},{"@type":"NRID","@value":"9000256131217"},{"@type":"NRID","@value":"9000256131430"},{"@type":"NRID","@value":"9000255984590"},{"@type":"NRID","@value":"9000008091807"},{"@type":"NRID","@value":"9000356613696"},{"@type":"NRID","@value":"9000364755123"},{"@type":"NRID","@value":"9000364049443"},{"@type":"NRID","@value":"9000364285474"},{"@type":"NRID","@value":"9000364083854"},{"@type":"NRID","@value":"9000364101689"},{"@type":"NRID","@value":"9000364122265"},{"@type":"NRID","@value":"9000364174795"},{"@type":"NRID","@value":"9000020635750"},{"@type":"NRID","@value":"9000005280065"},{"@type":"NRID","@value":"9000021844024"},{"@type":"NRID","@value":"9000021856635"},{"@type":"NRID","@value":"9000020139178"},{"@type":"NRID","@value":"9000254643910"},{"@type":"NRID","@value":"9000392739344"},{"@type":"NRID","@value":"9000256133009"},{"@type":"NRID","@value":"9000256131672"},{"@type":"NRID","@value":"9000256132249"},{"@type":"NRID","@value":"9000008819951"},{"@type":"NRID","@value":"9000364026061"},{"@type":"NRID","@value":"9000363927021"},{"@type":"NRID","@value":"9000364062865"},{"@type":"NRID","@value":"9000364136079"},{"@type":"NRID","@value":"9000364090522"},{"@type":"NRID","@value":"9000364163395"},{"@type":"NRID","@value":"9000364177649"},{"@type":"NRID","@value":"9000364162575"},{"@type":"NRID","@value":"9000364141747"},{"@type":"NRID","@value":"9000364113828"},{"@type":"NRID","@value":"9000349434130"},{"@type":"NRID","@value":"9000021840792"},{"@type":"NRID","@value":"9000021852914"},{"@type":"NRI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眞人"},{"@language":"en","@value":"MOCHIZUKI Matsuto"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Obstetrics and Gynecology, Takatsuki Hospital"},{"@language":"ja","@value":"高槻病院産婦人科"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"03708446"},{"@type":"LISSN","@value":"03708446"},{"@type":"EISSN","@value":"13476742"}],"prism:publicationName":[{"@language":"en","@value":"ADVANCES IN OBSTETRICS AND GYNECOLOGY"},{"@language":"ja","@value":"産婦人科の進歩"},{"@language":"en","@value":"Adv Obstet Gynecol"},{"@language":"ja","@value":"産婦の進歩"}],"dc:publisher":[{"@language":"en","@value":"THE OBSTETRICAL GYNECOLOGICAL SOCIETY OF KINKI DISTRICT 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