Contraception Flashcards
Rhythm method
- increase in basal temp means ovulation has occured
- abstenence for 5-10 d around ovulation
- Track mucus: abundant, thin, wand watery
- Measure for LH levels in urine
Is a Gyneclogical exam recommended before CHC prescription given?
No, but Med history and BP measurement needed
How is ovulation inhibited?
Progestins block LH surge
Which progestin is available as a contraceptive patch?
Norelgestromin
Other effects of progestins
Thicken cervical mucus, induce endometrial atrophy
Most common Estrogen in CHCs?
Dose?
Ethinyl Estradiol (EE) 20-25 ug
Estrogens function in CHC
- Suppress FSH, prevent LH surge
- Stabilize endometrium
Which hormone provides most of the effect in CHC?
the progestins Mimics pregnancy (Corpus luteum secretes progesterone to prevent 2nd ovulation)
Non-contraceptive benefits of CHC`
- Decreased menstrual problems (cramps, pain, irregularity), Acne
- Decreased risk of ovarian andometriial cancers, ovarian cysts, Pelvic inflammatory disease
CHC ADRs; Estrogen excess
- Nausea, breast tenderness, HA, Fluid Retention**
- Treat by decreasing estrogen dose, using progestin only, or IUD
CHC ADRs; Estrogen deficiency
- Midcycle breakthrough bleeding
- Vasomotor symptoms (hot flashes), anxiety, decreased libido
- Amenorrhea
- Treated by increasing estrogen dose
CHC ADRs; Progestin Excess
- Increased appetite, weight gain, bloating
- Acne, oily skin, hirsutisim
- Depression, fatigue, irritability
- Treat by decreasing progestin dose or use less androgenic progestin
CHC ADRs; Progestin deficiency
- Dysmenorrhea, late cycle breakthrough bleeding/spotting
- Treat by increasing progestin dose, use extended cycle or continuous regimen, or progestin-only, or IUD contraception
CHC risks and age
low dose (
CHC and smokers
Women over 35 and smokers are advised against COCs
-Progestin-only methods
Use of CHC in perimenopausal women
Helps increase bone mineral density and helps with vaso motor symptoms (hot flashes)
CHCs and HTN
- Even low dose EE increases BP
- Use ok in women
CHC and Dyslipidemias
-Progestins decrease HDL; increase LDL
-Estrogens decrease LDL; increase HDL
–>CHC usually no effect lipid profile
–>if controlled, can use CHC
Else (LDL>160 mg/dL) no use
What is theCVD risk with CHCs in dyslipidemia
Thrombosis, not atherosclerosis
Diabetes and CHCs
In healthy pt:
Most have no affect on insulin or HbA1c
Noincreased risk of TIIDM
**Women with DM should not use CHCs
CHCs and migraines
CHCs increase and decrease risk of migraines
- Prodromal aura –> stroke risk
- *Women subject to migraines should not use CHCs
- *If migraines develop, D/c immediately
***Progestin only may be substituted
CHCs and Breast Cancer
No association
OK in benign breast disease, and family history of BC
CHCs and thromboembolism
Estrogens increase hepatic production of clotting factors
- -> risk of DVT & PE
- -> Less risk than occurs in pregnancy, but still risk
**contraindicated in women with Hx of thromboembolic events
Which CHC has least risk of thromboembolic event
Levonorgestrel less than desorgestrel
CHCs and obesity risks
- Obese pt increased risk for contraceptive failure
- Increased risk of VTE
CHCs and obesity
Preferred therapy
Depot MPA or Levonorgestrel IUD preffered
CHCs and Lupus
should be avoided in pt with SLE + anti-phospholipid antibodies or vascular complications
**Use progestin only contraceptives