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体外受精后双胞胎出生率处于历史最低水平


考试信息 2021-11-09 22:15:18209www.jzxnet.com电话咨询:18123857581(点击立即拨打电话)
根据人类受精和胚胎学管理局(HFEA)的数据,体外受精后多胞胎的比例已大幅下降至6%。
  英国的多胞胎数量已达到历史最低水平。'这是英国医疗保健的重大成功。HFEA主席Julia Chain解释说,多胞胎对患者和未出生的婴儿都可能是危险的,并且会给NHS带来额外的负担。
  上周发布的HFEA新报告总结了2015年至2019年间体外受精后多胞胎的数据。多胞胎早产的风险更高,这可能导致长期的健康问题,例如脑瘫和学习困难。孩子。多胎妊娠的女性患先兆子痫和晚期流产的风险也更高。HFEA报告称,从1990年代到2019年,英国的多胎出生率大幅下降,从28%下降到仅6%。
  重要的是,HFEA发现,一次只移植一个胚胎来减少多胞胎似乎对成功率没有影响。相反,试管婴儿的成功率稳步提高。此外,使用NHS的患者和私人资助治疗的患者的体外受精成功率没有差异。然而,与NHS患者(5%)相比,年轻的私人资助患者(9%)的多胞胎率更高。
  从历史上看,IVF后的多胎出生率一直高于自然受孕后的多胎出生率,因为多个胚胎同时转移到子宫中。除特殊情况外,三重胚胎移植的做法在2003年仅限于40岁以下的患者。然后在2007年,HFEA的“一次一个”运动鼓励诊所进行单胚胎移植并冷冻其他可行的胚胎。此后,单胚胎移植将所有年龄组的多胞胎率限制在1%到3%之间。
  然而,HFEA的报告确实显示,所有人口统计数据中的多胎出生率并没有均匀下降。黑人患者的多胞胎和多胚胎移植率显着高于其他种族群体,比率为12%,而其他群体的平均比率为10%。因此,黑人妇女及其婴儿仍然面临着更高的多胞胎并发症风险。
  Chain确认HFEA将“鼓励诊所审查他们的多胞胎策略,特别是与少数民族患者有关的策略,因为我们希望为所有患者提供公平的竞争环境。”
  原文:

HFEA says twin births are at an all-time low

  The proportion of multiple births following IVF has fallen dramatically to six percent,according to the Human Fertilisation and Embryology Authority(HFEA).

  The number of multiple births has reached an all-time low in the UK.'This is a major success for UK healthcare.Multiple births can be dangerous for both patients and unborn babies and can put an additional burden on the NHS,'explained Julia Chain,chair of the HFEA.

  The new report from the HFEA,published last week,summarised data on multiple births following IVF between 2015 and 2019.Multiple births carry a higher risk of prematurity,which can result in long-term health issues such as cerebral palsy and learning difficulties in the child.Women carrying multiple pregnancies are also at a higher risk of pre-eclampsia and late miscarriage.The HFEA reported a substantial reduction in the UK multiple birth rate from the 1990s to 2019,falling from 28 percent to just six percent.

  Importantly,the HFEA found that the reduction in multiple births by transferring only one embryo at a time does not seem to have had an impact on success rates.On the contrary,IVF success rates have steadily improved.In addition,no difference was found between IVF success rates for patients using the NHS and patients whose treatment was funded privately.However,the rate of multiple births was higher among young,privately funded patients(nine percent)compared to NHS patients(five percent).

  Historically,multiple birth rates following IVF have been higher than multiple birth rates following natural conception,because of multiple embryos being transferred into the womb at once.The practice of triple embryo transfer was restricted in 2003 to patients under 40,apart from in exceptional circumstances.Then in 2007,the HFEA's'One at a Time'campaign encouraged clinics to practise single embryo transfer and freeze other viable embryos.Single embryo transfers have since limited the rate of multiple births to between one and three percent across all age groups.

  The HFEA's report did,however,reveal that multiple birth rates have not fallen evenly across all demographics.Multiple births and multiple embryo transfers were significantly higher in black patients than in other ethnic groups,at a rate of 12 percent compared with an average of ten percent across other groups.Consequently,black women and their babies remain at a higher risk from the complications of a multiple birth.

  Chain affirmed that the HFEA will'encourage clinics to review their multiple birth strategies,particularly in relation to patients from ethnic minority groups as we want to achieve a level playing field for all patients.'

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