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Results for “Basal Body Temperature Method”

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At least 19 recordsLinked to original sources
PubMed1996

An updated basal body temperature method.

Basal body temperature (BBT) readings are handicapped as fertility predictors by exogenous influences on women's temperatures, many of which could be adjusted for by the presence of a non-cycling control. We, a married, cohabiting couple, tracked our BBTs for two months. We found substantial temperature covariability. When there were difficult-to-explain changes in the female partner's temperature, similar changes in the male partner's temperature suggested that these fluctuations were not attributable to ovulation. Additionally, a clear mid-cycle widening of our temperature gap suggested that ovulation had occurred. This is a limited trial of a new method. However, the potential for substantially improving the accuracy and usefulness of a globally utilized method, coupled with its inexpensiveness, ease, and painlessness, call for a larger study.

Adult↗
PubMed2005

Basal body temperature method for detecting ovarian cycle in the Captive Beluga (Delphinapterus leucas).

The relationship between basal body temperature and circulating progesterone levels were investigated in a female beluga. Body temperature and serum concentrations of progesterone were measured daily and at 2-4 week intervals respectively, in a female beluga that was in captivity for 7 years between 1996 and 2003. The beluga first ovulated in April, 2000 (13 years old). Thereafter, serum concentrations of progesterone showed cyclic changes, indicating that the ovulatory cycle had started. Serum concentrations of progesterone ranged from 0.1 ng/ml to 15.7 ng/ml. Body temperature also showed cyclic changes during the estrous cycle. Body temperature ranged from 34.9 to 35.9 C, and tended to reach the peak during the high progesterone phase. Mating behavior was observed during the low body temperature phase. The changes in body temperature positively correlated with the circulating progesterone levels. The length of the estrous cycle was 36.7 +/- 3.9 (mean +/- SEM) days based on the intervals between the days of mating behavior. This is the first report demonstrating that body temperature clearly changes during the estrous cycle in a captive female beluga. The present finding suggests that measurement of body temperature is a useful method for detecting the ovarian cycle of the beluga in captivity.

Animals↗
PubMed1981

Basal body temperature: unreliable method of ovulation detection.

Basal body temperature (BBT) charts for menstrual cycles of 98 women were evaluated by six experienced physicians. The time of ovulation as estimated from the charts by a consensus of at least five of the evaluators coincided with the luteinizing hormone (LH) peak +/- 1 day in only 17 (22.1%) of the 77 cycles that were determined by endocrine profiles to be ovulatory and to have adequate luteal phases. An additional 22.1% of these cycles were thought to have monophasic patterns by a consensus of the physicians. Extreme caution in interpretation is urged when BBT is used for clinical or research evaluations of ovulation or menstrual cycle dynamics.

Adolescent↗
PubMed1983

A comparison of methods to interpret the basal body temperature graph.

Specific criteria are given for several methods of determining the basal body temperature shift. The specific criteria selected have been coded for a uniform interpretation by computer, and interpretations have been compared for 8496 charts. Our results indicate that the method that defines the temperature shift as 0.3 degrees F or more above the running low average for at least 3 consecutive days provides the best concurrent chart interpretation method. A method that creates a smoothed curve that transects the average of all temperatures on a completed graph provides a good retrospective method for identifying the temperature shift. Both the temperature averaging technique and curve smoothing technique identified a temperature shift in more than 95% of the charts with complete temperature readings.

Adolescent↗
PubMed1990

[Results of a physician survey on the status of knowledge and attitude to natural family planning in West Germany 1988].

Based on a questionnaire, reporters of the EMNID Poll Institute interviewed 229 general practitioners and 237 practising gynaecologists by telephone. When questioned which method for family planning was, in the physicians' opinion, most frequently used and which was most frequently recommended by physicians, contraceptive pills were far ahead of any other method. Somewhat surprising was the fact that up to 36% of the interviewed physicians considered that the intrauterine device is either the most frequently used or the most recommended method. Even the quantity of reports on condoms being the most frequently used method was relatively high (8-10%). 6% of the questioned physicians stated NFP methods as being mainly used, and 10% of the physicians recommended these methods. NFP methods also held the fourth place preceded by contraceptive pills, IUD and condom in the 1985 EMNID survey. Among the NFP methods, body basal temperature was reported to be the most popular and most frequently recommended method. The sympto-thermal method which is world-wide proposed as first choice by the experts, is still fairly unknown. The results arising from this survey indicate the necessity for physicians to gain a more thorough knowledge of modern NFP methods. Unjustified prejudices should be removed, the high reliability, which may be achieved at present, should be propagated and the undeniable advantages of NFP methods should be pointed out. The possible difficulties due to the necessary abstinence during the fertile period should, however, be kept in mind.

Adult↗
PubMed1994

Health workers' guide to natural family planning.

Health workers can help couples avoid unwanted pregnancies and choose when to have a baby by teaching them how to use natural family planning (NFP). A new WHO document for health workers describes how NFP works,. how effective it is and how couples can be taught to use it. The guide deals with 4 natural methods of family planning, all of which relate to identifying just when a woman is fertile or infertile during her menstrual cycle. The rhythm method requires the woman to calculate her fertile days according to the length of her menstrual cycles; the cervical mucus method makes the same calculation according to the amount and color of mucus in the vagina; the basal body temperature method relies on recording temperature changes during the menstrual cycle; and the symptothermal method bases the calculation on cervical mucus, body temperature and other signs of fertility such as tenderness of the breasts or abdominal pain. WHO studies of NFP show that the cervical mucus method works in 97 case out of 100 where couples use the method correctly. WHO believes that NFP is suited to couples who do not wish to use other contraceptive methods for family reasons or because of religious beliefs.

Delivery of Health Care↗
PubMed1982

Basal body temperature as a method of ovulation detection: comparison with ultrasonographical findings.

In 47 cycles with hormonal evidence of ovulation, the detection and timing of ovulation by basal body temperature (BBT) and by ultrasonographical observation are compared. The ovulation detection rate by ultrasonographical method proves to be considerably higher than by BBT criteria. The timing of the day of ovulation is evaluated, assuming that the ultrasonographical event of follicle disappearance represents ovulation. BBT criteria nadir, coverline and the eye-balling method show a very poor frequency distribution. The result of the FDHP method is a nearly symmetrical distribution, however, with a considerable range. We conclude that ovulation detection and timing by BBT are not reliable.

Body Temperature↗
PubMed1984

[The random urine estrogen, pregnanediol/creatinine ratio determinations for monitoring ovarian function].

Study was made to assess the potential clinical value of a random urine estrogen, pregnanediol/creatinine ratio (E/C, P/C) determinations as an index of monitoring ovarian function. Radioimmunoassay of total estrogens and pregnanediol was carried out on 24 hour and paired early morning urine samples in 14 healthy volunteers and 4 infertile patients treated at our clinic during 20 menstrual cycles. Estriol-16-glucuronide and pregnanediol-3-glucuronide antisera were used for radioimmunoassay of total estrogens and pregnanediol, and assays were made without any treatment of urine samples such as hydrolysis and/or extraction. E/C and P/C ratios correlated well with 24 hour excretion of these hormones: Total estrogens (micrograms/24 hr) = 0.89 spot E/C (ng/mg/ml) + 0.21, r = 0.924, p less than 0.01, pregnanediol (mg/24 hr) = 1.28 spot P/C (micrograms/mg/ml) -0.37, r = 0.791, p less than 0.01. The data indicate that ovarian activity in women could be predicted by measuring estrogen, pregnanediol to creatinine ratios in small samples of urine, and the collection of 24 hr samples is unnecessary. In view of this, the conventional basal body temperature method, used up to the present time as an infallible guide in monitoring ovarian function, needs to be reappraised.

Adolescent↗
PubMed1980

[Contraception].

Explore the source record for details and available documents.

Contraception↗
PubMed1982

A simplified method for recording basal body temperature.

The present study was undertaken to evaluate thermocrystalography as a means of simplifying the recording of basal body temperature (BBT) for the purpose of determining the time of ovulation. Accordingly, BBT, as recorded by disposable oral thermocrystal thermometers manufactured for fever detection, was compared with that obtained by a conventional rectal glass thermometer to establish reliability of the method within the normal temperature range. The readings by both methods were comparable, with a nonsignificant difference between 109 readings when analyzed by a paired t test. A biphasic curve was easily discernable in each of the eight cycles monitored. The use of disposal thermocrystal thermometers provides an alternative to the conventional method of BBT determination, which is faster, easier to read, and potentially more acceptable because of its oral use.

Body Temperature↗