Tuesday, September 3, 2019

Misoprostol abortion pill

Misoprostol, sold under the brandname Cytotec among others, is a medication used to prevent and treat stomach ulcers, start labor, cause an abortion, and treat postpartum bleeding due to poor contraction of the uterus.

For abortions it is used by itself and with mifepristone or methotrexate. By itself, effectiveness for abortion is between 66% and 90%.

Misoprostol is taken by mouth when used to prevent gastric ulcers in persons taking NSAIDs. For labor induction or abortion, it is taken by mouth, dissolved in the mouth, or placed in the vagina. For postpartum bleeding it may also be used rectally

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Mifepristone abortion pills

Mifepristone, also known as RU-486, is a medication typically used in combination with misoprostol to bring about an abortion during pregnancy.

This combination is 97% effective during the first 63 days of pregnancy. It is also effective in the second trimester of pregnancy. Effectiveness should be verified two weeks after use. It is taken by mouth

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Prevalence of medical abortion

A Guttmacher Institute survey of abortion providers estimated that early medical abortions accounted for 31% of all nonhospital abortions and 45% of nonhospital abortions before 9 weeks' gestation in the United States in 2014.

At Planned Parenthood clinics in the United States, medical abortions accounted for 32% of first trimester abortions in 2008, 35% of all abortions in 2010 and 43% of all abortions in 2014.

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How abortion pills work

Mifepristone (mif-uh-PRIS-tone) blocks the hormone progesterone, causing the lining of the uterus to thin and preventing the embryo from staying implanted and growing.

Methotrexate, which is sometimes used instead of mifepristone, stops the cytotrophoblastic tissue from growing and becoming a functional placenta.

Misoprostol (my-so-PROS-tol), a different kind of medication, causes the uterus to contract and expel the embryo through the vagina

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Methotrexate and misoprostol abortion pills

Though not a first line choice, a methotrexate/misoprostol combination regimen is appropriate. Methotrexate is given either orally or intramuscularly, followed by vaginal misoprostol 3–5 days later. This is an appropriate option for gestations through 63 days.

Per the WHO, a methotrexate-misoprostol regimen can also be used; but is not recommended as methotrexate may be teratogenic to the fetus in cases of incomplete abortion. However, this combination is considered more effective than misoprostol alone

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Mifepristone & misoprostol abortion pills

The National Abortion Federation (NAF) recommends a mifepristone and misoprostol combination regimen, wherever mifepristone is legally available and accessible.

This is an option for patients with gestations through 70 days. Mifepristone 200 mg is taken and followed by misoprostol 800 mcg buccally, vaginally, or sublingually 24 to 48 hours later.

A 2011 systematic review found that it was simpler and equally safe to administer mifepristone in clinic and have the pregnant woman later take misoprostol at home as it was to administer both drugs in the clinic

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Comparison of side effects of abortion pills and surgical abortion

Although medical abortion is associated with more bleeding than surgical abortion, overall bleeding for the two methods is minimal and not clinically different.

In a large-scale prospective trial published in 1992 of more than 16,000 women undergoing medical abortion using mifepristone with varying doses of gemeprost or sulprostone, only 0.1% had hemorrhage requiring a blood transfusion.

It is often advised to contact a health care provider if there is bleeding to such degree that more than two pads are soaked per hour for two consecutive hours.

A few rare cases of deaths from clostridial toxic shock syndrome have occurred following medical abortions.

A retrospective study published in The New England Journal of Medicine in July 2009 of 227,823 women who underwent medical abortion at Planned Parenthood affiliate centers from January 2005 through June 2008, found that the rate of serious infection after medical abortion declined by 93% after a change from vaginal to buccal administration of misoprostol combined with the routine prophylactic administration of doxycycline antibiotics.

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