Conditions Flashcards
(100 cards)
Postpartum contraception methods
Lactational amenorrhoea; 98% effective if;
- amenorrhoea
- <6/12 postpartum
- Baby fully breastfed and nil long intervals between feeds (<4hrs day, <6hrs night)
- BUT recommend additional contraception as variable night time feeding and ovulation may still occur
IUD; immediately postpartum
Progestogen-only pill; safe in breastfeeding
COCP; 6/52 postpartum (nil effect on BM from 6/52 onwards)
Ceasing contraception once 50yo
LNG-IUD, POP, implant
- amenorrhoeic for >=12/12
- 2x FSH 6/52 apart - if both >=30IU/L then only need contraception for another 12/12
- OR continue until >=55
Cu-IUD; cease amenorrhoeic 12/12
Contraception + epilepsy
Carbamazepine, phenytoin, lamotrigine -> reduce efficacy of COCP
LVG-IUD, copper IUD, depot are effective
Interacting drugs with contraception (excluding IUD/depot/Copper)
Antiepileptics: carbamazepine, oxcarbazepine, perampanel, phenobarbitone
Antiretrovirals for hiv
Antibiotics: rifampicin, rifabutin
Complementary: St John’s wort
Quick start indications
Irregular/long periods
If unintended pregnancy would cause harm
Difficulties accessing health care
Quick start contraindications
IUD
COCP with cyproterone (feminisation of foetus)
How to exclude pregnancy
Negative preg test + nil UPSI in last 3/52
Nil intercourse since period
Consistent with current contraception
within 5 days of start of period
21 days postpartum
5 days post abortion/miscarriage
COCP UMEK
Smoking
- >=35yo + >=15cig = 4
Obesity
- BMI >=35 = 3
HTN
- >=160/100 = 4
Vascular disease = 4
Previous CVA/IHD = 4
Hx VTE = 4
Fhx VTE = 3
Migraine + aura = 4
Current breast Ca = 4
Contraindications IUD
PID
STD
Unexplained PV bleeding
Cervical/endometrial Ca
LNG-IUD
52mg (menorrhagia/dysmenorrhoea/endo) or 19.5mg (dysmenorrhoea, reduce bleeding)
Contra; breast Ca, PID
Copper IUD
Immediately effective at any time
Complication; expulsion, PID, ectopic, perforation
Avoid sex 48hrs post insertion
Implanon
etonorgestrel 68mg every 3 years
Contra; breast Ca
Advantage
- cost-effective
- can quick start
- safe postpartum + breast feeding
- Amenorrhoea in 22%
- Improves dysmenorrhoea
Risks; infection, scarring, cysts
Mx bleeding on implanon
1st line; COCP continuously 3/12, mefenamic acid 500mg TDS 5/7, TXA 500mg BD 5/7
2nd line; norethisterone 5mg TDS 21/7
Depot medroxyprogesterone
Medroxyprogesterone 150mgcg 12/52ly
Consider; contraindication to COCP, drugs that induce liver enzymes, wanting discrete method
Risks; CVD risk, BMD
Contra; breast Ca
Precaution; IHD/CVA/TIA, CVD risk factors, avoid >50yo
Disadvantage; altered bleeding, low continuation rate, 20% have weight gain, loss of bone density, 18mo return of fertility
Late depo injection
up to 14/52 since injection is ok
14/52 + 1 or more days
- if UPSI within last 5/7 - need emergency contraception
- multiple UPSI >5 days ago and <=3/52 ago -> urine test needed
POP
Consider if oestrogen contraindication
Quick start = immediately effective - otherwise takes 3 pills before being effective
Contra; breast Ca
Precaution; unexplained PV bleed, Hx breast Ca, cirrhosis/liver disease, IHD/CVA/TIA that develops during use
Disadvantage; 3hr window, altered bleeding, low continuation rate, ectopic pregnancy,
Missed POP
1 pill missed
- immediately take, condoms until 3 consec pills
- consider EC if UPSI occurred in time since missed pill
>1 pill missed
- take most recent missed pill and condoms for 3 consec pills
- consider EC if UPSI occurred in time since missed pill
Oestrogen types in COCP
Estradiol
Ethyinylestradiol
Mestranol
Progestogen types in COCP
1st gen; norethindrone
2nd gen; levonorgestral, norethisterone
3rd gen (less androgen, more VTE)
- desogestral, etonogestrel
Unclassified; cyproterone acetate, drosperinone
- both antiandrogenic
COCP advantages
Tx
- acne
- menorrhagia
- dysmenorrhoea
- endometriosis
- PCOS
- PMS
Reduce risk
- endometrial/ovarian/bowel Ca
COCP disadvantages
high user involvement
VTE risk
MI/CVA risk
increase risk cervical/breast Ca
HTN
irregular bleeding
COCP contraindications
Breastfeeding <6/52 postpartum
Smoker >35 and >15 cig per day
Migraine + aura
HTN >160/110
>50yo
Hx VTE
Breast Ca
Cirrhosis/liver ca
Known thrombogenic mutations
Mx COCP ADR
Breakthrough bleeding
- Higher dose oestrogen or less androgenic progestin
- extending cycling
Breasts tenderness
- reduce oestrogen/progestogen dose
Nausea; take at night
Headache; reduce oestrogen
Bloating; reduce oestrogen or change to diuretic progestogen (drosperinone)
COCP missed
> 24hrs overdue
- take most recent
- condoms 7/7
- if <7 pills from placebo -> EC if UPSI in last 5/7
- <7 till next placebo - skip and take active