Lecture_6_July_5_Bio_30

Lecture_6_July_5_Bio_30 - Spontaneous Abortion Not every...

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Spontaneous Abortion Not every pregnancy ends in a birth Many end in spontaneous or elective abortion Miscarriage or spontaneous abortion occurs in first 20 weeks Early appear as a heavier than usual menstrual flow Later miscarriage involves cramping 10-20% of pregnancies emotional impact can be significant couple needs grief-support
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Possible causes of miscarriage Maternal age >35 > 5 alcoholic drinks a week Bodies own rejection of abnormal fetus Drug use Damaged cervix Chronic kidney inflammation Abnormal uterus Infection Autoimmune reaction Diabetes Emotional Shock Aspirin and NSAID early in pregnancy
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Elective Abortion Involves decision to terminate a pregnancy using medical procedure Historical overview In ancient China and Europe abortions were legal early in pregnancy Early American law allowed abortion During 1860s abortion became illegal in US except to save life of mother yet women with money were still able to obtain an abortion. 1973 Roe vs. Wade legalized woman’s right to decide to terminate pregnancy before age of viability
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Elective Abortion Historical overview 1977 Hyde Amendment prohibited federal Medicaid funds for abortions but later upheld by Supreme Court and modified several times Medicaid is a joint state and federal program for low income citizens State restrictions or limitations- only 17 states pay for abortion for low income women with Medicaid Waiting period, mandatory counseling session, parent notification
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Elective Abortion How medical abortions work Decision to terminate pregnancy using medical procedure Medical abortion –First available in US in 2000; available in Europe since 1980 Done before 7 weeks of pregnancy Progesterone is key hormone in establishment and maintenance of pregnancy Mifepristone , formerly known as RU-486 , is an antiprogesterone drug that blocks receptors of progesterone Without progesterone, cervix softens, lining of uterus breaks down and bleeding starts Second drug is a prostaglandin such as misoprostol , drug makes uterus contract
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Elective Abortion – How medical abortions work Increase in number of doctors willing to provide medical abortions instead of going to a clinic
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Elective Abortion – Procedures suction curettage Usually done 7-13 weeks after last menstrual period Preformed by doctors in clinic or hospital Cervix is dilated with metal or laminaria then small tube attached to vacuum is inserted into uterus removing fetal tissue, placenta and built up lining
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Elective Abortion – Other Procedures Done between 13 and 21 weeks Safest and most widely used method Suction and curette (metal instrument used to scrape walls of uterus General anesthesia usually required Cervix is dilated wider than suction curettage late-term abortion procedures Done after 20 weeks and before viability- at 24 weeks of
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This note was uploaded on 07/08/2011 for the course BIOL 301 taught by Professor Springer,m during the Spring '08 term at UC Riverside.

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Lecture_6_July_5_Bio_30 - Spontaneous Abortion Not every...

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