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体外受精を受けた高年齢の原始母性女性における2回の連続単胎妊娠と双胎妊娠の予後
Outcome of two sequential singleton pregnancies and twin pregnancies among primiparous women at advanced age undergoing IVF.
PMID: 32683483 DOI: 10.1007/s00404-020-05700-5.
抄録
目的:
母体外受精による2回連続単胎妊娠を妊娠した母体年齢の高いプリミパラと、体外受精による双子妊娠を妊娠したプリミパラの産科的・詳細な新生児学的転帰を比較した。
PURPOSE: To compare the obstetrical and detailed neonatal outcomes of primipara of advanced maternal age conceiving two sequential singleton pregnancies by IVF with those of primipara conceiving twins by IVF.
方法:
2011年から2019年の間に、1つの第三大学付属医療センターで連続して単胎児を出産した、または双子を出産した、年齢≤38歳で体外受精で妊娠したすべての初産婦を対象としたレトロスペクティブ研究。我々は主に2つの比較を行った。1.1回目 vs. 2回目のシングルトン妊娠。2.2つの単胎妊娠対双胎妊娠。
METHODS: A retrospective study of all primiparous women aged ≤ 38 years and conceived by IVF who delivered sequential singletons or delivered twins at a single tertiary university affiliated medical center between 2011 and 2019. We performed two main comparisons: 1. First vs. second singleton pregnancies. 2. Two singleton pregnancies vs. twin pregnancies.
結果:
全体では、連続して単回体外受精で妊娠した女性は63人であった。年齢中央値は、1回目の妊娠時に40.0歳、2回目の妊娠時に42.0歳であった。妊娠・分娩合併症の発生率は、妊娠高血圧症(7例(11.1%)対4例(6.3%)、p=0.530)、妊娠糖尿病(13(20.6%)対18(28.5%)、p=0.410)、子宮内発育制限(6(9.5%)対4(6.3%)、p=0.744)、または帝王切開分娩(25(39.7%)対29(46%)、p=0.589)のいずれかであった。妊娠32週以前の分娩率は、第1回および第2回単胎妊娠ともに同様であった(1.6%、p>0.999)。新生児の有害転帰の割合は、第1回、第2回単胎妊娠群ともに低く、群間で差はなかった。逐次単胎妊娠の女性と比較して、双胎妊娠の女性は、2回の単胎妊娠の女性と比較して、帝王切開分娩率が有意に高く(113(83.7%)対29(46%)、p<0.001)、分娩時の妊娠年齢が低く(36.2対38.4、p<0.001)、出産時の妊娠年齢が低かった。新生児への悪影響は、出生体重1500g未満(17(12.6%)対2(3.2%)、p=0.036)、新生児集中治療室入院(57(42.2%)対4(6.6%)、p=0.036)など、双子妊娠の方が有意に高かった。2%)対4(6.3%)、p<0.001)、新生児低血糖(23(17%)対3(4.8%)、p=0.017)、呼吸窮迫症候群(14(10.4%)対1(1.6%)、p=0.040)。新生児入院期間は双子で有意に長かった(9 日 vs. 5 日、p<0.001)。妊娠高血圧障害(子癇前症および妊娠高血圧症)の発症率は両群間で差はなかったが、重度の子癇前症の発症率は双子を妊娠した女性の方が高い傾向にあった(8人(5.9%)対0人、p=0.057)。
RESULTS: Overall, there were 63 women with consecutive singleton IVF pregnancies. The median age was 40.0 at first pregnancy and 42.0 in the second pregnancy. Pregnancy and delivery complications rates did not differ significantly between the first and the second singleton pregnancies, including gestational hypertensive disorders (7 (11.1%) vs. 4 (6.3%), p = 0.530), gestational diabetes mellitus (13 (20.6%) vs 18 (28.5%), p = 0.410), intrauterine growth restriction (6 (9.5%) vs. 4 (6.3%), p = 0.744), or cesarean delivery (25 (39.7%) vs. 29 (46%), p = 0.589). Rates of delivery before 32 weeks gestation were similar for both first and second singleton pregnancies (1.6%, p > 0.999). The proportion of neonatal adverse outcome in both first and second singleton pregnancies groups was low and did not differ between the groups. Compared with women who delivered sequential singletons, women with twin pregnancies had significantly higher cesarean delivery rates (113 (83.7%) vs. 29 (46%), p < 0.001) and lower gestational ages at delivery (36.2 vs. 38.4, p < 0.001) than women with two singleton deliveries. Adverse neonatal outcomes were significantly higher for twin pregnancies, including birthweight < 1500 g (17 (12.6%) vs. 2 (3.2%), p = 0.036), neonatal intensive care unit admission (57 (42.2%) vs. 4 (6.3%), p < 0.001), neonatal hypoglycemia (23 (17%) vs. 3 (4.8%), p = 0.017), and respiratory distress syndrome (14 (10.4%) vs. 1 (1.6%), p = 0.040). Length of neonatal hospitalization was significantly longer for twins (9 vs. 5 days, p < 0.001). The rate of gestational hypertensive disorders (preeclampsia and gestational hypertension) was similar between the groups, but the rates of severe preeclampsia trended higher among women who carried twins (8 (5.9%) vs. 0, p = 0.057).
結論:
高度な母体年齢のプリミパラ女性での連続単胎妊娠は、妊娠の間に臨床的に有意な差がなく、全体的に非常に良好な転帰を持っています。さらに、その転帰は双子に比べてはるかに良好である。
CONCLUSIONS: Sequential singleton pregnancies at primipara women of advanced maternal age have an overall very good outcome, with no clinically significant difference between the pregnancies. In addition, their outcome is much better compared with twins.