contraception - methods Flashcards
mechanism COCP prevents pregnancy
inhibits ovulation
when should you start taking COCP
if started within 1st 5 days of cycle no additional contraception needed // if started any later use condoms for 7 days
how should you take COCP
same time every day // no need for withdrawal bleed (take continuously, take 3 packs then a break)
which medications may reduced efficiency of the COCP
liver enzyme inducing eg rifampicin
advantages of COCP (esp cancer)
lighter periods // reduced ovarian, endometrial and colorectal cancer!!!
increased risks with COCP
VTE // breast and cervical cancer // stroke and IHD (esp smokers)
SE COCP
headache, nausea, breast tenderness
what to do with 1 missed pill COCP
take pill at any time you remember, even if that means taking 2 in a day
advice if 2 COCP pills are missed in week 1 of cycle
consider emergency contraception
advice if 2 COCP pills are missed in week 2 of cycle
if she has taken pill for 7 consecutive days there is no need for emergency contraception
advice if 2 COCP pills are missed in week 3 of cycle
finish pills in her back and start new pack (miss pill free interval)
UKMEC 3 COCP
35 + smoke <15 // BMI >35 // FH VTE <45 // hypertension // immobile eg wheel chair // BRCA // gallbladder disease
UKMEC 4 COCP
35+ smoke >15 // migraine with aura // PMH VTE (or mutation) // stroke or IHD // breastfeeding <6weeks // uncontrolled hypertension // breast cancer // surgery + immobile // antiphospholipid antibodies eg SLE or APS // diabetes >20 years ago
UKMEC 4 COCP
35+ smoke >15 // migraine with aura // PMH VTE (or mutation) // stroke or IHD // breastfeeding <6weeks // uncontrolled hypertension // breast cancer // surgery + immobile // antiphospholipid antibodies eg SLE or APS
how should the combined patch be used
wear a patch for 3 weeks (change each week), 4th week no patch
advice if there is a delay in changing combined patch for in week 1 or 2
if <48 hours change immediately // if >48 hours then change immediately and use condoms for 7 days (or emergency contraception is needed)
advice if there is a delay in changing combined patch for in week 3
remove ASAP and apply patch on usual start day for next cycle (ie have withdrawal bleed, no need for condoms)
advice if there is a delay in applying new combined patch at end of week 4 (patch free week)
condoms for 7 days
mechanism POP (not desogesterol)
thickens cervical mucus
mechanism POP desogesterol
inhibits ovulation (and thickens mucous)
most common SE POP
irregular vaginal bleeding
advise about starting POP
if started up to day 5 of period safe to start // if after use condoms for 2 days
what to do if missed pill with POP
<3 hours take as normal // >3 hours use condoms for 48 hours // if deosgestrel (cerazette) a 12 hour window
mechanism implant
inhibits ovulation + thickens mucous (progesterone)