Late termination of pregnancy

Late termination of pregnancy (also referred to as late-term abortion)[2] describes the termination of pregnancy by induced abortion during a late stage of gestation.[3] "Late", in this context, is not precisely defined, and different medical publications use varying gestational age thresholds.[3] In 2015 in the United States, about 1.3% of abortions took place after the 21st week,[4] and less than 1% occur after 24 weeks.[5]

Late termination of pregnancy
Other namesPostviability abortion, third trimester abortion, induced termination of pregnancy (ITOP),[1] late-term abortion
SpecialtyObstetrics and gynecology
ICD-10-PCSO04
ICD-9-CM779.6
MeSHD000028
MedlinePlus002912

Reasons for late terminations of pregnancy include when a pregnant woman's health is at risk or when lethal fetal abnormalities have been detected.[6][7] These anomalies may include anencephaly or limb-body wall complex where death occurs almost immediately after birth.[6] Later abortion is not associated with any negative physical or mental health outcomes,[8][7] and the risk of death following a surgical abortion after 20 weeks is less than that of typical full-term childbirth in the United States.[9]

Late termination of pregnancy is more politically controversial than abortion in general. Most countries in Europe permit abortion in later stages of pregnancy if specific circumstances are present.[10] The American College of Obstetricians and Gynecologists states with respect to abortion that "politicians should never interfere in the patient-physician relationship".[6]

Definition

A late termination of pregnancy often refers to an induced ending of pregnancy after the 20th week of gestation, i.e. after a fetal age (time since conception) of about 18 weeks. The exact point when a pregnancy becomes late-term, however, is not clearly defined. Some sources define an abortion after 16 weeks as "late".[11] In three articles published in 1998 in the same issue of the Journal of the American Medical Association (JAMA) two chose the 20th week of gestation and one chose the 28th week of gestation as the point where an abortion procedure would be considered late-term.[12][13][14]

In the USA, the point at which an abortion becomes late-term is often related to the "viability" (ability to survive outside the uterus) of the fetus. Sometimes late-term abortions are referred to as post-viability abortions, though this is not a medical term.

Viability

There is no sharp limit of development, age, or weight at which humans automatically become viable.[15] A 2015 study found that even with active treatment, no infants born at less than 22 weeks survived, at 23 weeks survival without severe impairment is less than 2%, and at 25 weeks, up to 30% might survive without severe impairment.[16][17] The American College of Obstetricians and Gynecologists and the Society for Maternal and Fetal Medicine states that in cases of delivery occurring before 26 weeks, “given the potential for maternal and perinatal mortality and morbidity, the option of pregnancy termination should be reviewed with the patients.”[18] Because the chance of survival is variable based on interventions available and the weight and sex of the fetus, there is no consensus on viability.

The American College of Obstetricians and Gynecologists reports that 23% of abortion providers offer abortions at 20 weeks of gestation and later, most often using a method called dilation and evacuation (D&E).[19]

Mental health

A wanted abortion in any trimester is not associated with mental health harms.[8][7] Overall, abortion does not increase the risk of experiencing symptoms of depression, anxiety or stress in the short term or over five years.[20] A previous history of mental health conditions, sexual assault, and intimate partner violence were strongly associated with experiencing negative mental health outcomes after the abortion.[21][22]

Incidence
Histogram of abortions by gestational age in England and Wales during 2004.
Abortion in the United States by gestational age, 2004. (Data source: Centers for Disease Control and Prevention)
  • Australia: As of 2015, South Australia is the only Australian state or territory to keep reliable abortion statistics. During 2012, 92% of abortions were performed before 14 weeks' gestation, 6% between 14–20 weeks, and 2% (n=96) at a later stage. Of the 96 abortions carried out beyond 20 weeks, 53 were due to actual or probable fetal abnormality.[23]
  • Canada: During the year 2009, 29% of induced abortions were performed before 8 weeks, 41% at 9 to 12 weeks, 7% at 13 to 16 weeks and 2% over 21 weeks.[24]
  • England and Wales: In 2015, 8% of abortions occurred after 12 weeks; 0.1% occurred at or over 24 weeks.[25]
  • New Zealand: In 2003, 2.03% of induced abortions were done between weeks 16 and 19, and 0.56% were done over 20 weeks.[26]
  • Norway: In 2005, 2.28% of induced abortions were performed between 13 and 16 weeks, 1.24% of abortions between 17 and 20 weeks, and 0.20% over 21 weeks.[27] Between February 15, 2010 and December 1, 2011, a total number of ten abortions were performed between 22 and 24 weeks. These have been declared illegal by The Norwegian Directorate of Health. Women who seek an abortion after the 12-week time limit must apply to a special medical assessment board – called an "abortion board"(Norwegian: ‘abortnemnd’ or ‘primærnemnd’) – that will determine whether or not to grant them an abortion.[28]
  • Scotland: In 2005, 6.1% of abortions were done between 14 and 17 weeks, while 1.6% were performed over 18 weeks.[29]
  • Sweden: In 2005, 5.6% of abortions were carried out between 12 and 17 weeks, and 0.8% at or greater than 18 weeks.[30]
  • Switzerland: In 2016, 10% of abortions performed after the legal term were carried out after week 21 (a total of 36 cases).[31] Of these cases 86% were carried out due to physical problems with the child or mother.[31]
  • United States: In 2003, from data collected in those areas that sufficiently reported gestational age, it was found that 6.2% of abortions were conducted between 13 and 15 weeks, 4.2% between 16 and 20 weeks, and 1.4% at or after 21 weeks.[32] In 2014, the CDC reported that 1.3% of reported abortions (5,578) were performed at 21 weeks of gestation or later.[33]

Reasons

United States
See also: Reasons for abortions

Reasons for late terminations of pregnancy include when a pregnant woman's health is at risk or when lethal fetal abnormalities have been detected.[6][7]

A study from 2013 found after excluding abortion "on grounds of fetal anomaly or life endangerment", that women seeking late abortions "fit at least one of five profiles: They were raising children alone, were depressed or using illicit substances, were in conflict with a male partner or experiencing domestic violence, had trouble deciding and then had access problems, or were young and nulliparous". They concluded that "bans on abortion after 20 weeks will disproportionately affect young women and women with limited financial resources".[34]

England and Wales

The NHS records the reasons given for abortions at all stages of development. In 2015, 2,877 abortions were performed at 20 weeks or above. Of these, 23 (0.8%) were performed to save the life of the pregnant woman, 1,801 (63%) were performed for mental or physical health reasons, and 1046 (36%) were performed because of foetal abnormalities.[35]

As of 1998, among the 152 most populous countries, 54 either banned abortion entirely or permitted it only to save the life of the pregnant woman.[36]

On the other hand as of 1998, 49 of the 152 most populous countries allowed abortion without restriction as to reason, but 44 of these required specific justification after a particular gestational age:[36]

  • 12 weeks (Albania, Armenia, Azerbaijan, Belarus, Belgium, Bosnia-Herzegovina, Bulgaria, Croatia, Cuba, Czech Republic, Denmark, Estonia, France, Georgia, Greece, Kazakhstan, Kyrgyz Rep., Latvia, Lithuania, Moldova, Mongolia, Norway, Russian Federation, Saudi Arabia, Slovakia, Slovenia, South Africa, Ukraine, Tajikistan, Tunisia, Turkey, Turkmenistan and Uzbekistan)
  • 13 weeks (Italy)
  • 14 weeks (Austria, Cambodia, Germany, Hungary, Romania and Spain)
  • 18 weeks (Sweden)
  • 22 weeks (North Macedonia)
  • 24 weeks (Singapore)
  • viability (Netherlands and to some extent the United States)
  • no limit (Canada, some states in the United States, China, and North Korea)

As of 2011 among those countries that allowed abortion without restriction as to reason, the gestational limits for such abortions on request were: 37 countries set a gestational limit of 12 weeks, 7 countries of 14 weeks, 4 did not set limits, 3 at viability, 3 at 10 weeks, one at 90 days, one at 8 weeks, one at 18 weeks, and one at 24 weeks. In addition, Abortion in Australia, and, to a certain extent, Abortion in the United States, is regulated at state/territory level, and laws vary by region.[37]

In these countries, abortions after the general gestational age limit are allowed only under restricted circumstances, which include, depending on country, risk to the woman's life, physical or mental health, fetal malformation, cases where the pregnancy was the result of rape, or poor socio-economic conditions. For instance, in Italy, abortion is allowed on request up until 90 days, after which it is allowed only if the pregnancy or childbirth pose a threat to the woman’s life, a risk to physical health of the woman, a risk to mental health of the woman; if there is a risk of fetal malformation; or if the pregnancy is the result of rape or other sexual crime.[38] Denmark provides a wider range of reasons, including social and economic ones, which can be invoked by a woman who seeks an abortion after 12 weeks.[39] Abortions at such stages must in general be approved by a doctor or a special committee, unlike early abortions which are performed on demand. The ease with which the doctor or the committee allows a late term abortion varies significantly by country, and is often influenced by the social and religious views prevalent in that region.

Some countries, like Canada, China (Mainland only) and Vietnam have no legal limit on when an abortion can be performed.[36]

United States

The United States Supreme Court decisions on abortion, including Roe v. Wade, allow states to impose more restrictions on post-viability abortions than during the earlier stages of pregnancy.

As of December 2014, forty-two states had bans on late-term abortions that were not facially unconstitutional under Roe v. Wade or enjoined by court order.[40] In addition, the Supreme Court in the case of Gonzales v. Carhart ruled that Congress may ban certain late-term abortion techniques, "both previability and postviability",[41] as it had done in banning intact dilation and extraction with the Partial-Birth Abortion Ban Act of 2003.[42]

The Supreme Court has held that bans must include exceptions for threats to the woman's life, physical health, and mental health, but four states allow late-term abortions only when the woman's life is at risk; four allow them when the woman's life or physical health is at risk, but use a definition of health that pro-choice organizations believe is impermissibly narrow.[40] Note that just because a portion of a state's law is found to be unconstitutional does not mean that the entire law will be deemed unconstitutional: "[I]nvalidating the statute entirely is not always necessary or justified, for lower courts may be able to render narrower declaratory and injunctive relief," meaning the court could declare that only those parts of the law that are violative of the Constitution are invalid (declaratory relief), or that the court can prohibit the state from enforcing those portions of the law (injunctive relief).[43]

Eighteen states prohibit abortion after a certain number of weeks' gestation (usually 22 weeks from the last menstrual period).[40] The U.S. Supreme Court held in Webster v. Reproductive Health Services that a statute may create "a presumption of viability" after a certain number of weeks, in which case the physician must be given an opportunity to rebut the presumption by performing tests.[44] Because this provision is not explicitly written into these state laws, as it was in the Missouri law examined in Webster, pro-choice organizations believe that such a state law is unconstitutional, but only "to the extent that it prohibits pre-viability abortions".[45]

Ten states (although Florida's enforcement of such laws are under permanent injunction) require a second physician's approval before a late-term abortion can be performed.[40] The U.S. Supreme Court struck down a requirement of "confirmation by two other physicians" (rather than one other physician) because "acquiescence by co-practitioners has no rational connection with a patient's needs and unduly infringes on the physician's right to practice".[46] Pro-choice organizations, such as the Guttmacher Institute, posit that some of these state laws are unconstitutional, based on these and other Supreme Court rulings, at least to the extent that these state laws require approval of a second or third physician.[40]

Thirteen states have laws that require a second physician to be present during late-term abortion procedures in order to treat a fetus if born alive.[40] The Court has held that a doctor's right to practice is not infringed by requiring a second physician to be present at abortions performed after viability in order to assist in the case of a living fetus.[47] It is not common for live infants to be born after an abortion at any stage in pregnancy.[48]

Methods

There are at least four medical procedures associated with late-term abortions:

References
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