孕中期减胎后双胎与初始双胎的妊娠结局比较

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1、山东人学硕士学位论文(32／89)inthereducedgroup(P=O．823)3．PregnancyComplicationsTherateofpre-eclamepsiais8．2％(39／478)iIlthenonreducedgroupand12．4％(11／89)inthereducedgroup(P=0．199)．Therateofgestationaldiabetesmellitusinthetwogroupsis1．7％(8／478)and3．4％(3／89)topart(P=O．287)．4．BirthWeightDiscordanceBirthwei

2、ghtdiscordanceisexpressedastheweightdeterminedbyAminusB，whereAisthebirthweightoftheheaviertwinandBisthebirthweightofthelightertwin．Thefrequenciesofbirthweightdiscordances>400gwere28．87％(138／478)forthenonreducedgroupand26．97％(24／89)forthenonreducedgroup．Thefrequenciesofbirthweightdiscordance

3、s>100gwere75．10％(359／478)forthenonreducedgroupand75．28％(67／89)forthereducedgroup．Nomatterwhichcriteriaweused，thefrequenciesofdiscordantbirthweightsdidnotdiffersignificantlybetweenthereducedandnonreducedtwingroups．5．MeanBirthWeightThegestationalagesatdeliverywerecategorizedintothreegroup：(1)

4、28""32W,(2)32--。36W，(3)>36W．Ingeneral，themeanbirthweightofthereducedtwingroupwassignificantlylowerthanthatofthenonreducedgroup．Themeanbirthweightofgroup28～32Wand32"-'36Watenotstatisticallysignificant(P=0．545．P=0．245)Themeanbirthweightofgroup>36Warestatisticallysignificant(P

5、sOutcomeTherateatleastoneneonate(>28W)diedinthereducedandnonreducedgroupswere1．23％(1／78)and2．23％(10／448)．Allneonataldeathsoccurredwereduetorespiratoryembarrassment，geneogenousangiocardiopathyandgastrointestinaltractmalformation．TheperinantalmobidityrateWas3．85％(3／78)and4．02％(18／448)．Therewe

6、renotstatisticallysignificantintheperinantalmortalityandmorbidityrate(P=O．588，P--0．943)，whichwerenoteffectedwiththeinitialnumberoffetuses．Conclusion：MultiplepregnanciesafterfetalreductionWasstillassociatedwithamildincreasedriskwhencomparedtononreducedtwinpregnancies，theabortionrateishiger．T

7、hegestationalagesofthereducedgroupwereaffectedbytheinitial8山东大学硕十学位论文numberoffetuses，andthebirthweightswerelowerthanthenonreducedtwins．Soweshouldenhancethedetectionandmanagementofthemidtrimesterofthereducedtwins．Keywords：secondtrimester；selectivereductio