Contraception / Preconceptional Counselling Flashcards
The risk of ectopic pregnancy with a ten-year probability following Tubal sterilisation
7.3 ectopic pregnancies per 1000 procedures.
LNG-IUS (Mirena) contains
52 mg levonorgestrel
If a pregnancy occurs and the IUD is not subsequently removed, the incidence of spontaneous abortion is approximately …. times greater than would occur in pregnancies without an intrauterine device.
If a pregnancy occurs and the IUD is not subsequently removed, the incidence of spontaneous abortion is approximately three times greater than would occur in pregnancies without an intrauterine device.
Mechanisms of Action of IUD
induce a local inflammatory reaction of the endometrium, creating an environment that is hostile to sperm so that fertilization of the ovum does not occur. The primary effect of the progestin in the LNG-IUS is to thicken cervical mucus. This impedes sperm penetration and access to the upper genital track.
If a pregnancy occurs and the IUD is not subsequently removed, the incidence of spontaneous abortion is approximately —- times greater than would occur in pregnancies without an intrauterine device. Once the IUD is removed, the complication rate becomes similar to that of a pregnancy without an IUD.
If a pregnancy occurs and the IUD is not subsequently removed, the incidence of spontaneous abortion is approximately three times greater than would occur in pregnancies without an intrauterine device. Once the IUD is removed, the complication rate becomes similar to that of a pregnancy without an IUD.
Actinomyces organisms are often identified in routine cytology in women with IUDs in place.
If the woman is asymptomatic, she may be followed without therapy at usual intervals. The IUD should not be removed from an asymptomatic colonized woman. In the rare event that a significant pelvic infection is present, the woman should be treated with long-term antibiotics (usually penicillin) and the IUD removed.
IUDs shouldn’t be inserted into women with any of the following six conditions:
(1) pregnancy or suspicion of pregnancy, (2) acute PID, (3) postpartum endometritis or infected abortion, (4) known or suspected uterine or cervical malignancy, (5) genital bleeding of unknown origin, and (6) a previously inserted IUD that has not been removed.
Female sterilization 5-year cumulative failure probability of 13 per 1000 procedures, with failures sometimes occurring years after the sterilization procedure. Risk factors for failure included age and method of sterilization; the younger the woman, the higher the risk of failure.
Postpartum partial salpingectomy carried the lowest 10-year cumulative risk of failure (7.5 per 1000 procedures), and Hulka clips (which are no longer available) carried the highest risk (36.5 per 1000 procedures)
Mechanism of Action of OCP
Changes in the cervical mucus (which prevent sperm transport into the uterus), the fallopian tube (which interfere with gamete transport), and the endometrium (which reduce the likelihood of implantation) represent secondary contraceptive effects of the progestin component. Contraceptive steroids prevent ovulation mainly by interfering with release of gonadotropin-releasing hormone (GnRH) from the hypothalamus.
A woman’s baseline risk of venous thromboembolism (VTE) increases by …. times if she ingests estrogen-containing oral contraception.
A woman’s baseline risk of venous thromboembolism (VTE) increases by three times if she ingests estrogen-containing oral contraception.
Endometrial cancer and OCP
Compared with nonusers, women who use OCs for at least 1 year have an age-adjusted relative risk of 0.5 for development of endometrial cancer between ages 40 and 55. This protective effect is related to duration of use, increasing from a 20% reduction in risk with 1 year of use to a 40% reduction with 2 years of use to about a 60% reduction with 4 years of use. This protective effect persists for at least 15years after stopping use of OCs.
Ovarian Cancer and OCP
T he risk of ovarian cancer decreases by about 20% for every 5 years of use. For woman using OCs for 15 years or more, the risk is almost halved. One year of use may obtain a protective effect. OCs reduce the risk of the four main histologic types of epithelial ovarian cancer: serous, mucinous, endometrioid, and clear-cell, and the risk of both invasive ovarian cancers and tumors of low malignant potential (borderline tumors). The protective effect continues for at least 30 years after the use of OCs ends. OC use also reduces the risk of ovarian cancer in women with BRCA-1 and BRCA-2 mutations and in those with a family history of ovarian cancer to the same extent as in women without these risk factors.
OCP and colorectal cancer
A meta-analysis of published studies of the relationship between OCs and colorectal cancer showed that OC ever-use was associated with a 15% to 20% reduction in the risk of colorectal cancer
OCP absolute contraindications, including
history of vascular disease (thromboembolism, thrombophlebitis, atherosclerosis, and stroke) and systemic disease that may affect the vascular system (e.g., active lupus erythematosus with vascular involvement or diabetes with retinopathy or nephropathy). Cigarette smoking by OC users older than age 35 and uncontrolled hypertension are also contraindications. As breast or endometrial cancer may involve hormone-sensitive tumors, avoiding OC use is prudent. Other contraindications include undiagnosed uterine bleeding and elevated triglyceride levels. Pregnancy, Women with active liver disease should not take OCs. Women who have recovered from liver disease, such as viral hepatitis.
NuvaRing (CONTRACEPTIVE VAGINAL RING) contains:
containing 2.7 mg of ethinyl estradiol and 11.7 mg of etonogestrel.
placed in the vagina for 21 days and then removed for up to 7 days to allow withdrawal bleeding.