When Using the Basal Body Temperature Method of Family Planning, What Should the Woman Know?

• What is the basal body temperature monitoring method?
• How does the basal trunk temperature monitoring method work?
• Indications and contraindications
• Who uses the basal torso temperature monitoring method?
• Using the basal trunk temperature monitoring contraceptive method

• Effectiveness of basal body temperature monitoring
• Benefits of basal body temperature monitoring
• Limitations of basal torso temperature monitoring

 What is the basal torso temperature monitoring method?

Basal body temperature monitoring is a contraceptive method which relies on the woman monitoring her basal body temperature on a daily basis. Basal body temperature is the torso's temperature at the time of waking up, before whatever concrete activity has been performed. The woman must besides record her daily temperature measurements on a nautical chart, so that she can hands compare changes in the temperature from day to day.

A woman's torso temperature changes throughout the menstrual bicycle and changes in her body temperature coincide with hormonal changes which indicate fertile and non-fertile stages of the cycle. Past monitoring her temperature every twenty-four hours, a woman can decide the periods of her menstrual cycle when she is and is non fertile.

In guild for basal torso temperature monitoring to piece of work finer as a contraceptive method, the woman must abstain from sex or use another contraceptive method (normally a barrier method) while she is in the fertile period of her cycle.

How does the basal body temperature monitoring method work?

The basal body temperature monitoring method works by enabling women to make up one's mind the fertile and infertile periods of their menstrual cycle and avert sex during the fertile stages.

A woman's torso temperature rises slightly subsequently ovulation at about half way through her menstrual cycle. For instance, a adult female with a normal, 28 day menstrual bicycle will experience ovulation about two weeks later on her last menstrual bleeding and near two weeks before her next menstrual bleeding.

Ovulation takes about 24 hours and refers to the release of an egg from the ovaries. The released egg travels through the fallopian tubes to the uterus. If it comes into contact with sperm whilst in the uterus, the woman volition become pregnant. If it does not meet a sperm, the egg volition continue travelling through the opening of the uterus and into the vagina, where information technology volition be expelled from the torso.

Ovulation occurs in response to an increase in levels of the hormone progesterone in the woman'southward body. Afterwards ovulation, progesterone levels decrease, which cause the woman's body temperature to rising slightly. A woman tin therefore identify when ovulation has passed and the fertile stage of her menstrual bike has finished by monitoring her basal trunk temperature throughout the menstrual bicycle. Later on the rising in temperature, she can be certain that she is infertile, until her menstrual bleeding begins once more.

Information technology is very of import that the woman too avoid sexual practice or utilise an alternative method of contraception, from the first day of the menstrual cycle (the day when menstrual bleeding commences) until a rise in basal body temperature occurs (indicating ovulation has passed). While a woman is only fertile in the 24 hours following ovulation (the time that the egg remains in her body) sperm may survive in her uterus for up to 5 days after sexual intercourse. And so a woman can too become meaning if she has sex without using contraception in the five days prior to ovulation. Considering there is no temperature change to point the beginning of ovulation, it is necessary for a adult female to avoid sex without contraception, from the starting time of her menstrual bleeding until her temperature drops.

Indications and contraindications

It is possible for most women to use basal body temperature monitoring, nearly of the time. However, at times when women accept a condition which causes their temperature to change (e.m. a sickness which causes fever), the basal body temperature method volition be difficult to use and may be unreliable. Women with conditions affecting their body temperature must therefore use an alternative form of contraception or abstain from sexual intercourse until their torso temperature stabilises.

Who uses the basal trunk temperature monitoring method?

In Commonwealth of australia some 4.4% of women use a type of fertility awareness method for contraception. Nonetheless, in that location is no information showing what proportion of these women use basal body temperature monitoring, as opposed to other fertility awareness methods such as the cervical mucus monitoring or calendar method.

Using the basal body temperature monitoring contraceptive method

As with all fertility awareness based methods of contraception, it is very of import to abstain from sex activity or use an alternative method of contraception during the fertile stages of the menstrual bike. In society to practise this, a adult female requires the cooperation of her sexual partner, so it is important that partners of women using this method are as well aware how the method works and why information technology is necessary to use other contraceptives or abjure from sex sometimes. Women may wish to have their partner to the GP or family unit planning clinic so that they can receive information about the basal body temperature monitoring method from a health professional.

Women using the basal body temperature monitoring method should likewise ensure that they obtain an alternative contraceptive method which they can utilize during the fertile stage of their menstrual cycle, for example condoms or a diaphragm (unless they plan to abstain from sex completely during this period). Women using the basal trunk temperature monitoring method should as well be enlightened that taking emergency contraception following unprotected sexual activity essentially reduces the gamble of pregnancy. They may wish to use this method if they inadvertently accept unprotected sex (e.yard. by safety breaking) during the fertile menses.

Women who choose to employ this method must besides accept care to acquire how to monitor and nautical chart their basal trunk temperature correctly. Correct monitoring and use of the method involves:

• Measuring the basal trunk temperature every solar day, that is before getting out of bed, eating or performing any concrete activity;
• Recording the basal body temperature measurement on a graph each solar day, so that trends in body temperature are like shooting fish in a barrel to spot;
• Watching for a slight increment in temperature of 0.2-0.5^oC, which indicates ovulation has passed;
• Abstaining from sexual practice or using an alternative grade of contraception from the get-go day of the menstrual wheel (starting time of menstrual bleeding) until three days subsequently the 0.2-0.five^oC temperature rising.

Effectiveness of basal trunk temperature monitoring

Basal torso temperature monitoring is 99% effective in the outset year of use, if used correctly and consistently. However, the method is less constructive if the woman does non monitor her temperature accurately or if she has unprotected sex activity in the fertile flow of the cycle (including during menstrual haemorrhage). Because many women take difficulty using the method correctly and consistently, nearly 25% of those who use fertility awareness method (including but not limited to basal body temperature monitoring) become pregnant in the beginning year of using the method.

For the basal torso temperature monitoring method, some of the difficulty of use may be caused by external influences (e.thou. rising ecology temperature) which cause the woman's temperature to increase and for her to call up that ovulation has passed when it has non. However there is likewise evidence that many women discover the daily basal trunk temperature monitoring difficult and/or inconvenient.

Benefits of basal body temperature monitoring

Every bit with other fertility based sensation methods, the benefits of basal trunk temperature monitoring include:

• It is a natural method and does not cause side effects;
• Women become more than knowledgeable near their trunk changes which occur during their menstrual wheel when they use the method;
• Correctly used, information technology provides highly effective contraceptive protection.

Limitations of basal body temperature monitoring

The limitations of basal torso temperature include:

• It is unsuitable for apply while the adult female has a wellness condition which causes her temperature to rise, for example an infectious illness;
• It requires daily monitoring of torso temperature and measurements to be taken at the same time each day;
• The fertile period begins at the beginning of the menstrual bike (equally opposed to other fertility based methods in which the woman can determine if she is infertile for the first 5-seven days of the cycle). The period in which abstinence or other contraception are required is therefore longer;

More data

For more information on different types of contraception, male and female beefcake and related health issues, see Contraception.

References

1. Grimes, D. Gallo, M. Grigoreiva, V. et al. Fertility-awareness based methods for contraception: systematic review of randomised controlled trials. Contraception. 2005;72:85-xc.
2. World Health Organisation. Family Planning: A global handbook for providers. 2007. [cited 2009, June 20] Available from:  world wide web.who.int/entity/reproductivehealth/publications/family_planning/en/
3. Richters, J. Grulich, A.East. de Visser, R.O. et al. Sexual practice in Commonwealth of australia: Contraceptive Practices in a representative sample of women. Aust NZ J Pub Health. 2003;27:210-6.
4. Frank, E. White, R. An updated basal body temperature method. Contraception. 1996;54:319-21.

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