Gynecology CIS 1: intro and contraception (Dunn) Flashcards

1
Q

Menorrhagia

A

heavy menstruation >80cc

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2
Q

Metrorrhagia-

A

bleeding in between periods

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3
Q

Menometrorrhagia

A

heavy bleeding and bleeding in between menses

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4
Q

EGBUS:

A

External Genitalia
Bartholins Gland
Urethra
Skene’s Gland

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5
Q

Uterus:

physical exam

A

AVAF-anteverted,anteflexed
RVRF-retroverted,retroflexed
Axial-
Size-

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6
Q

Unintended Pregnancy

A

Sexually active young adult women are at high risk for unintended pregnancy

Highest rate among young adult women & older teens
107 / 1,000 women age 20-24 / year
103 / 1,000 women age 18-19 / year

That’s 10% per year!

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7
Q

CDC Medical Eligibility Criteria for contraception by category

A

1 - No restriction for use of the method

2- Advantages of using the method generally outweigh the theoretical or proven risks
3- Theoretical or proven risks usually outweigh the advantages of using the method
4- An unacceptable health risk if the contraceptive method is used

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8
Q

least effective–> most effective family planning methods

A
least effective--
withdrawal, spermicide
fertility awareness
condoms/ diaphragm
patch
pill
lactational amenorrhea
injectables
vasectomy
implants, IUD, female sterilization
- most effective
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9
Q

LARC

A

Long-acting Reversible Contraception

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10
Q

Etonogestrel Implant

A
Single 40-mm  2-mm rod 
Rod is made of ethylene vinyl acetate copolymer
Contains 68 mg of etonogestrel
active metabolite of desogestrel
releases 60 mcg daily
Effective for 3 years
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11
Q

Etonogestrel Implant Efficacy

A

More effective than permanent sterilization
0.05% typical (and perfect-use) failure
No pregnancies during 1200 woman-years of exposure (Pearl Index, 0; 95% CI 0.0-0.2)
American study of 330 women aged 18-40
no pregnancies in 2 years

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12
Q

Etonogestrel ImplantBleeding Patterns

A
Total number of bleeding/spotting days decreased or similar for majority of users
Key difference: 
irregularity and unpredictability
~20% amenorrhea in 1st year
Increases to 30-40% after 1st year
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13
Q

Other Side Effects of etonogestrel

A

acne (17%)
weight gain
not contraindicated in obese women/ girls

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14
Q

Bone Mineral Density & Etonogestrel Implant

A

Implanon does not suppress estrogen levels to extent that Depo-Provera® does

Randomized trial of Implanon and copper IUD
No differences in BMD changes between the two groups during one year of use

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15
Q

Etonogestrel implant continuation

A

Bleeding irregularity is the most common reason for discontinuation
U.S. studies: 13-14%

Overall U.S. continuation rate: 75%-84%

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16
Q

contraindications for etonogestrel

A
very few
SLE with anti-phospholipid antibodies
Hepatocellular adenoma
Discontinue if develops during use:
Migraines with aura
Unexplained vaginal bleeding suspicious for serious condition, before evaluation
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17
Q

Appropriate patients for etonogestrel

A

Women desiring highly effective,
confidential, “forgettable” contraception

Women who cannot use estrogen

Tolerant of irregular bleeding
The importance of counseling

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18
Q

Intrauterine contraception: paragard

A

Copper IUD
use up to 10 years
heavier periods
no hormonal side effects

don’t use on young women

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19
Q

Mirena

A

IUD- local progestin
use up to 5 years
lighter periods- irreular for 3-6 months
some systemic effects

20
Q

Copper-releasing IUDs:Mechanism

A
Mass effect, like plastic IUDs
Copper alters uterine and tubal fluid 
- Hinders spermatozoa function / motility
Inhibits fertilization
- Not an abortifacient
21
Q

Progestin-releasing IUDs:Mechanism

A
Impairs spermatozoa motility / function
Inhibits conception
- Unable to recover fertilized ova 
- Not an abortifacient 
Thickens cervical mucus
Atrophy of endometrium
Impairs tubal motility
85% of women are ovulatory
22
Q

Levonorgestrel-releasing IUS

A

Releases 20 mcg per day of Levonorgestrel
Hormonal side effects are rare
Endometrial concentrations 200-800x higher than in blood

23
Q

Increasing IUD use among young women

A

ACOG Committee Opinion December 2007
IUDs should be offered as a “first-line choice” for contraception in both nulliparous and parous adolescents

> 99% effective

24
Q

IUD Risks – younger patients

A

Insertion may be more difficult in nulliparous women
Higher expulsion in adolescents
May have higher rates of copper IUD removals due to bleeding and pain
No evidence this occurs with the LNG-IUS

25
Copper IUDs – menstrual changes
Increased menstrual flow - Increased amount and duration - Usually no change in hemoglobin Increased dysmenorrhea Management - Patience and reassurance - NSAIDS around clock, start 1 day before menses
26
Progestin IUDs – side effects
Hormonal side effects are rare & not more common than in general population Nonetheless, they are reasons given for discontinuation No weight gain
27
Dalkon Shield
1970 Introduced 1973 High incidence of PID recognized 1975 Removed from market 1983-1988 No IUDs sold in U.S.
28
IUD and Pelvic Inflammatory Disease RiskEvidence-Based?
Re-analysis excluding the Dalkon Shield and addressing bias = no increased risk 3 types of bias in observational studies: - Inappropriate comparison groups - Over diagnosis of PID among IUD users - Inability to control for confounding factors WHO analysis of 22,900 women over 8 yrs - Increased risk in first 20 days after insertion - No increased risk with continued use
29
infertility in nulliparous women and IUD?
NO association with past use of Copper IUD
30
IUD candidates
Prior STI or PID: NOT a contraindication - Contraindicated: current PID or within the past 3 months / Current cervicitis High risk women: screen for infection with GC or CT prior to insertion Adolescence and nulliparity are not contraindications CDC category 2 for age < 20 years & nulliparity
31
Depo-Provera
150 mg of depot medroxyprogesterone acetate; administered deep intramuscular or 104 mg subcutaneous Q 3 months Initiate anytime in cycle; rule out pregnancy Back up method for 7 days if injection is not within 5 days of start of menses
32
DMPA (depo-provera) benefits and risks/ side effects
``` Benefits: Highly effective: 96% Little compliance required Easily concealed No decreases in efficacy in overweight women ``` ``` Risks and Side Effects: Bleeding irregularities Delayed return of fertility Weight gain Decrease in bone mineral density ```
33
DMPA – bleeding patterns
Irregular bleeding 70% in the first year; 10% thereafter Usually light; hemoglobin levels rise Most common reason for discontinuation Up to 25% in the first year of use Management Similar to management with Implanon Bleeding and spotting decrease progressively with each reinjection Amenorrhea: 55% at one year 70% at 2 years 80% at 5 years
34
DMPA and Weight Gain
Adult women: 4.3 kg increase over 5 years Compared to 1.8 kg increase in copper IUD users Early weight gain may predict excessive gain Weight gain greater in adolescents who are overweight (BMI >30) when initiating DMPA 20 lb weight gain over 18 months in obese teens
35
DMPA & Bone Mineral Density (BMD)
Use of DMPA is associated with loss of BMD After stopping, recovery of BMD is seen return to baseline in 1-4 years No data on fracture risk in women who have used DMPA in the past
36
Depo-Provera contraindications
``` Similar to progestin implant Severe hypertension (>160/>100) Diabetes with vascular disease and / or > 20 years disease ```
37
depo-provera appropriate patients
``` Women desiring effective, confidential, method and who can return for injections Women who cannot use estrogen Tolerant of irregular bleeding Special populations - Sickle cell disease - Epilepsy ```
38
Combined Hormonal Contraceptives
Safe for most young women Added benefit of regulation of menses “Typical-use” effectiveness ~ 92% (Do not quote perfect use ~ 99%) Commonly reported as most effective method Poor continuation
39
Contraceptive patch
Weekly transdermal patch 20 mcg EE + 150 mcg norelgestromin daily Continuous delivery Area “under the curve” is 60% > in a 35 mcg pill Possible increase in estrogen side effects such as VTE Less effective if body weight > 90 kg
40
The vaginal ring
``` 3 weeks with 1 week ring-free interval or 24-4, or continuous Lowest ethinyl estradiol dose (15 mcg EE, 120 mcg etonorgestrel daily) Continuous dosing Use back-up method if out for > 3 hours ```
41
Potential advantages of new delivery systems
Compliance -Patch > pill in some studies…but not in others Satisfaction -No consistent differences Side effects -Ring with some improvement in nausea and cycle control Continuation and efficacy
42
Weight andCombined Hormonal Contraceptives
no link to weight gain
43
Breakthrough bleeding and CHC
``` Common reason for discontinuation With time, improved with extended regimens Higher rates in women - who smoke - with cervical infections ``` Management: - If near end of cycle, discontinue early - If severe, consider exogenous estrogen
44
acne and CHC
All pills studied reduced acne compared to placebo No consistent results regarding different types of progestins - Cyproterone (pregnane) may be better than LNG - LNG may be better than desogestrel (!)
45
Combined Hormonal Contraception:Contraindications
``` History of a venous thromboembolism Known thrombogenic mutations Migraines with aura* Hypertension, esp. if poorly controlled Lupus with antiphospholipid antibodies ```
46
Condoms
``` Safe for all young women Only method that offers PROTECTION FROM STIs Not effective enough for contraception Typical-use failure is 15% Counsel for dual protection from pregnancy & STIs ```
47
Summary of contraception
Unplanned pregnancy is common The implant and IUDs provide greater: - Convenience - Efficacy Discontinuation of all methods is high Counseling in advance is vital