contraception and birth control
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Contraception and Birth Control. Rik Papagolos, RN. Risk and Responsibility. If intercourse occurs the day before ovulation, the chance of pregnancy is about 30%. If intercourse occurs the day of ovulation, the chance of pregnancy is about 15%. - PowerPoint PPT PresentationTRANSCRIPT
Contraception and Birth Control
Rik Papagolos, RN
Risk and Responsibility
If intercourse occurs the day before ovulation, the chance of pregnancy is about 30%.
If intercourse occurs the day of ovulation, the chance of pregnancy is about 15%.
Over the course of one year, couples who do not use contraception have a 90% chance of pregnancy.
Contraception
We use our knowledge of reproductive physiology to promote or avoid pregnancy.
Preventing Sexually Transmitted Diseases (STD’S)
Most STD’s are treatable if diagnosed early. AIDS is one exception> AIDS is FATAL. Some contraceptive methods work to help prevent
disease and pregnancy. Latex and polyurethane condoms provide barrier
protection against virus and bacterial infection: such as Herpes virus, chlamydia, gonococcus, and HIV.
Preventing Sexually Transmitted Diseases (STD’S)
Not 100% effective at preventing infection or pregnancy.
Spermicides - Chemicals that kill sperm offer protection against some STD’s, foam or film can provide extra protection.
Use of spermicides with barrier methods increase the effectiveness of both the infection and pregnancy protection of the method.
Contraception
Three general strategies:Prevent ovulation;Prevent fertilization;
Keep sperm & oocyte away from each other.
Prevent implantation.
Contraceptive methods Hormonal methods Barrier methods Intrauterine devices Natural methods Permanent methods
Birth Control and Contraception
What is the differenceBirth Control: Preventing birth from taking place
IUDEmergency contraceptive pillsRU-486Surgical Abortion
Birth Control and ContraceptionContraception: Preventing conception (preventing the
sperm and the egg from uniting)Barrier methods
Condoms, diaphragms
SpermicidesHormonal methods
Pill Shot (depo) Implants
Methods of Contraception and Birth Control
Choosing a MethodThe best method is the one you will use consistently
and correctlyKnow the reliability of methodKnow the advantages and disadvantagesSide effectsRisks
Methods of Contraception and Birth Control
AbstinenceChoosing not to have intercourse
OutercourseSexual activity without penetration
Methods of Contraception and Birth Control
Hormonal MethodsThe pill Implants Injections
The Pill Combination of estrogen and progestin (some
progestin only) Inhibits ovulation Thickens the cervical mucous Changes the lining of the uterus to inhibit
implantation of the fertilized ovum Alter the rate of ovum transport 99.5 % effective (if used correctly) 92 %
Hormonal Prevents ovulation
Thickens mucus at the cervix so sperm cannot pass through
Changes the environment of the uterus and fallopian tubes to prevent fertilization or implantation should fertilization occur
Hormonal Contraception: Combination OCP’s
Contain Synthetic Estrogen/Progestin Modern E2 Dosage ≤ 50 Mcg
Despite Diversity, Side Effects and Efficacies are Similar
Requires Patient Compliance
Combination OCP’s:Mechanism of Action
Suppresses LH / FSH Release
(E2 FSH, P LH)
Progestin Thickens Cervical Mucus and Alters Endometrium
Major Effect Is Anovulation and Impairment of Sperm Transport and Oöcyte Implantation
Contraception Prevent ovulation.
“The Pill” Synthetic “progestins” mimic
effect of progesterone. Inhibits FSH & LH, and their
effects on follicle development
Norplant Depo-provera
The Pill
AdvantagesEasy to useDependableNo additional appliancesCan regulate menstrual flow and decrease cramps and
other symptoms of menses
Combination OCP’s:Additional Benefits
Menstrual Regulation Decreased Risk of Anemia Ovarian, Endometrial CA: Risk Lower PID Risk Prevention of Benign Breast Disease
The Pill
ProblemsSide effects
Changes in menstrual flowBreast tendernessNauseaVomiting Wt. gain or loss
The Pill Contraindications
Heart disease Kidney disease Asthma High blood pressure Diabetes Epilepsy Gall bladder disease Sickle-cell anemia Migraine headaches depression,
The Pill
ACHESAbdominal painChest pain or shortness of breathHeadaches (severe)Eye problems (blurred vision, flashing lights and
blindness)Severe leg pain
The Pill
Smoking and the Pill DO NOT TAKE THE PILL IF YOU SMOKE
Implants
Progestin only (Norplant) Prevents ovulation More effective than the Pill
Norplant: Implantable for ≤ 5 Years Similar Side Effects as Depo-Provera Avg. Yearly Failure Rate: 0.8/100 (Increases : >
2/100 after 5 years) Occasionally Difficult to Remove
Implant
AdvantagesConvenienceEliminate user errorNo menses or very lightDecreased cramping
Implant
ProblemsDifficulty in removing
Side effectsSimilar to the pillChanges in
menstrual bleedingHeadaches
Side effectswt. gainAcnebreast tendernesshair growthovarian cysts
Implant
ContraindicationsLiver diseaseBreast cancerCardiovascular diseaseUnexplained vaginal bleedingPregnantSmokers
Injectable Contraceptives
Depo-Provera (DMPA) ProgesteroneCan stop mensesSide effects include
Spotting, wt. gain, headaches, breast tenderness, dizziness, loss of libido and depression
Lunelle Progestin and estrogenSimilar to the pill in all aspects
Barrier Methods
The condom Female condom Diaphragm Cervical cap Sponge
Barrier methods Male / Female condom Diaphragm
Block sperm from reaching the egg
Some are used with spermicides, which kill sperm.
Barrier Methods: Diaphragm: High Failure Rates
– Must Remain in ~6 Hrs post-coitus
– Best if Combined with Spermicide
– UTI Potential Condom: STD Protection, Inconsistent Use by
Men Female Condom: Cumbersome, Learning
Curve
Spermicides
Nonoxynol-9 Use in combination with barrier methods of
contraceptionFoamgelFilmCreams, jellies and suppositories
IUD
Intrauterine device Copper and plastic (Copper T-380A) 10 years Plastic and Progesterone (progestasert IUD) 1 year 90-96 % effective in use Increased risk of PID
Barrier methods Male / Female condom Diaphragm
Block sperm from reaching the egg
Some are used with spermicides, which kill sperm.
Intrauterine device (IUD) COPPER-T
MULTI LOAD
MIRENA
The progestin released by the levonorgestrel (LNg) IUD prevents fertilization by making the mucus in the cervix thick and sticky, so sperm can't get through to the uterus. The progestin and IUD change the uterine lining, preventing implantation in the rare case that fertilization occurs.
The copper in the copper IUD is toxic to sperm. It causes changes in the uterus and fallopian tubes that kill sperm
IUD:Mechanisms of Action
NOT ABORTIFACIENT!!!!!!!! Prevents Conception:
– Sperm Transport Inhibited
– Sperm Survival / Capacitation Diminished
Prevents Implantation: hCG Levels = 0
IUD:Complications
PID: Usually 20 Insertional Contamination
– Unproven Role for Prophylactic ABx Hypermenorrhea Expulsion Perforation (< 0.1%) Failure: IUD Should be Removed ??Ectopic
Fertility Awareness Methods Calendar or rhythm method
Midway in cycle Basal body temperature (BBT) method
Increase in body temperature Cervical Mucous Method
Clear slippery mucous Symptothermal method
Combination of BBT and Cervical Mucous methods
Fertility awareness (natural family planning)
Identifies the time during a woman's cycle when she is most likely to become pregnant (fertile). An additional method or abstinence should be used during this time of fertility.
Contraception
Prevent fertilization. Coitus interruptus
Least effective of allRhythm
50% failure rateAvoid intercourse during
woman’s likely fertile period
~ 1 week before ovulation to ~ 4 days after ovulation
Basal Body Temperature Method (BBT)
Fertility Awareness Methods
The lowest body temperature of a healthy person during awaking hours
OVULATORY CYCLEBBT IS BIPHASIC
Sterilization For Women
Tubal ligationsCut and seal the fallopian tubes
HysterectomyRemoval of the uterus
For Men Vasectomy
Vas deferens are cut and sealed
Emergency Contraception
Emergency Contraception Pill (ECP) Copper IUD
Abortion
Spontaneous abortion (miscarriages) Induced abortion
Induced Abortion
Drug inducedMifepristone (RU-486)
Surgical MethodsVacuum aspirationDilation and evacuationHysterectomySaline, prostaglandins and urea (after the first trimester)