Contraception Flashcards
How long can sperm live in the female genital tract?
5 days
How long do ovum survive in the female genital tract?
24 hours
What frequency of sexual intercouse would mean that sperm are in the female genital tract all the time?
every 3 days
What is the pearl index?
no. of contraceptive failures per 100 women users/years
What is the equation for pearl index?
no. of accidental pregnancies x 1200/ total months of exposure
What is the most commonly used contrception worldwide?
withdrawal
What are the 5 aspects of natural family planning?
basal body temperature; cervical mucous; cervical position; standard days; lactational amenorrhea
When should basal body temperature be taken?
before rising in the morning
Waht is the increase in body temperature during ovulation?
> 0.2 degrees sustained for 3 days after at least 6 days of lower temp
What are the characteristics of cervical mucous at ovulation?
thick and sticky post ovulation for at least 3 days after thinner watery, stretchy muscous
What is the position of the cervix when fertile?
high in vagina; soft and open
What is the position of the cervix when less fertile?
low in vagina firm and closed
What are the most fertile days in a 28 day cycle?
days 8-18
What are the criteria for lactational amenorrhea?
exclusively breast feeding; less than 6/12 post natal; amenorrhoeic
How effective is lactational amenorrhea?
98%
What are the types of combined hormonal contrception?
pills; patches and vaginal ring
What are the types of progestogen only contraception?
pill; implant; depo injection
What is the mode of action of combined hormonal contraception?
primarily inhibits ovulation; effect on cervical mucus; effect on endometrium
What is the pearl index for combined hormonal contraception?
0.3%
Give an example of newer POP?
desogestel
What is the MOA of newer POP?
inhibit ovulation; effects on cervical mucus; fallopian tube transport and endometrium
What is the MOA of older POPs?
effects on cervical mucus; fallopian tube transport and endometrium
What is the pearl index for POPs?
0.3%