4. NATURAL FAMILY PLANNING METHODS
Also called periodic abstinence
Takes into account the natural signs and symptoms
of the
fertile period and also the viability of the sperm and
ovum
in the female reproductive tract.
Aims at avoiding sexual intercourse around
ovulation.
5. Advantages:
No side effects.
No cost implied.
Natural menstruation not affected.
Culturally and morally acceptable.
Does not need follow up.
Disadvantage:
Need commitment, motivation, training and the co-
operation of both partners.
Less effective.
Unsuitable for women with irregular cycles.
Do not give protection against STDs and HIV.
7. Calendar-based methods
Avoid coitus during the period of maximum fertility.
Based on the assumption(Ogino-Knaus theory) that:
In a women with regular cycles, ovulation takes place on
the 14+/- 2 days before the onset of the next period and
that the ovum if not fertilised, seldom survives more than
48-72 hours.
If coitus is restricted to10 days prior to menstruation
and the first three or four days after, conception is
less likely to occur( failure rate is 9-10 per 100
women years).
8. Calendar-based methods
Standard days method:
Advocates avoiding unprotected intercourse on days
8
through 19 of each cycle.
Regular cycles
Efficacy reduced even one cycle is out of the 26-32
day range.
9. Rhythm or calendar method:
Regular cycles
Length of 6 cycles is recorded.
Fertile period:
Beginning: By subtracting 18 days from the length of the
shortest cycle
End: By subtracting 11 days from the length of the longest
cycle.
10. Women with cycles ranging from 26-32 days:
periodic abstinence practiced from the 8th to the 21st
day.
Calculations are to be updated every month always
using
the 6 most recent cycles.
11. Symptoms-based methods
Basal body temperature method(BBT method):
Women takes her body temperature at the same
time every morning before she gets out of bed or
eats anything.
Temperature will rise slightly(0.2-0.5C) just after
ovulation.
Couple are asked to avoid intercourse or use an
alternative method of contraception from the first
day of the monthly bleeding until 3 days after the
temperature rise.
12. Once the fertile period is over, they can have coitus.
Failure rate: 11 per 100 women years.
13. Cervical mucus or ovulation or Billing’s method:
Cervical mucus changes
Women are made aware of the estrogen induced
changes in cervical mucus at mid cycle
14. Due to hormonal changes, particularly effect of
estrogen on the cervix:
Scant and thick preovulatory cervical discharge changes
to profuse,transparent, watery, slippery discharge which
can be drawn or stretched out into a
thread(spinnbarkeit test) between two fingers-
designated as the ‘peak day’ and intercourse is avoided.
Failure rate: 3 per 100 women years
15. Symptothermal method:
Makes use of atleast two indicators to identify the
fertile period.
Based on the observation of BBT, spinnbarkeit,
midcycle pain, midcycle spotting or bleeding, cervical
changes and breast tenderness- Noted in a chart
Practice of intercourse same as with the Billing’s
method.
Failure rate: 2 per 100 woman years
16. Newer methods
Special digital thermometers and use of the
Rovumeter to note changes in cervical mucus are
experimental.
PERSONA(Unipath) consists of dipstick to detect
urinary estrone 3-glucuronide which indicates the
onset of the fertile period and LH which indicates
ovulation.
17. COITUS INTERRUPTUS
Withdrawal method
Man withdraws his penis from the partner’s vagina
and ejaculates outside the vagina, keeping his
semen away from her external genitalia.
Widely used, but have obvious disadvantages.
High failure rate.
Needs lot of motivation on the part of male and
imposes a lot of strain on the couple.
18. LACTATIONAL AMENORRHOEA
METHOD(LAM)
Natural effect of breast-feeding on fertility.
Lactation: Increased prolactin secretion Inhibits
pulsatile secretion of GnRH inhibits ovulation.
Ovary produces very little estrogen and no
progesterone.
Efficacy depends on the completeness of breast
feeding.
19. Rule of 3s for postpartum initiation of contraception:
Full breastfeeding: Begin in the 3rd month, postpartum
Partial or no breastfeeding: Begin in the 3rd week,
postpartum
20. Conditions to be satisfied:
Mother’s menses has not returned.
Full or nearly full breast-feeding
Baby less than 6 months old.
21. POST-COITAL DOUCHE
Flush out semen immediately after intercourse.
High failure rate(ineffective- escae of sperm into the
cervical canal before douche.
Emotionally disturbing.