The correct method of basal body temperature measurement.
1.Buy a thermometer, master the meter reading method, and make sure it is accurate.
2.Every night before going to bed, the mercury column of the thermometer will be thrown to below 35 degrees, and placed in a place within reach after waking up.
3.Every morning after waking up, immediately put the thermometer under the tongue for 5 minutes and then take out the reading, and record it on the special form.
4.It is strictly forbidden to get up, urinate, defecate, eat and talk before measuring the body temperature.
5. The measured basal body temperature will be recorded correctly on the temperature record sheet, which can reflect the function of the ovaries.
6. In case of cold, fever, diarrhea, insomnia, alcohol consumption, use of electric blankets, etc., it is often easy to affect the basal body temperature, so pay attention to it when measuring it, and pay attention to it with special marking instructions.
To measure the basal body temperature, you can use an ordinary thermometer, the main thing is to master the correct method of measurement.
Although the method of measuring basal body temperature is simple, but strict requirements, but also need to adhere to long-term. Generally, it needs to be measured for more than 3 consecutive menstrual cycles to indicate the problem.
The role of basal body temperature.
1, to determine whether ovulation guidance contraception general follicular phase basal body temperature of 36.5 ℃, luteal phase rise of more than 0.5 ℃, and thus the appearance of biphasic performance, indicating ovulation, if the monophasic type without late rise in the temperature curve, suggesting no ovulation, its accuracy rate of 70% to 80%.
If the temperature increases by 0.3 to 0.6°C or even more within 24 hours, then it indicates ovulation.
In addition, the basal body temperature is also a good indicator of the quality of the ovum. If the basal body temperature is high for a long period of time, lasting 13 to 14 days, then the quality of the eggs is good.
2. Diagnose early pregnancy and determine the risk of early pregnancy If the basal body temperature is high for more than two weeks, you should consider going to the hospital for a check-up because you may be pregnant. If ≥ 20 days can be determined as early pregnancy. The gradual decrease of BBT curve in early pregnancy indicates luteal insufficiency or placental malfunction and the tendency of miscarriage.
3.Observation of luteal function BBT should rise immediately after ovulation and continue at high level for ≥11 days. If BBT rises in steps, the curve takes 3 days to reach a high level or BBT rises steadily <11 days, it can be diagnosed as luteal phase defeot (LPD).
4. Suggesting other pathologies BBT does not decrease during menstruation, there may be endometriosis or early subclinical miscarriage, and endometriosis lesions bleed and produce absorption heat. In primary amenorrhea patients with biphasic BBT, uterine amenorrhea should be considered, such as congenital absence of uterus or endometrial destruction by tuberculosis of the reproductive tract.
5. Patients with irregular cycles who project the appropriate time for endometrial biopsy, to understand whether the endometrium has a secretory response and the function of the corpus luteum, should have an endometrial biopsy 2 to 3 days before the estimated next menstrual flow after the rise of BBT.
The basal body temperature curve graph for different conditions with normal ovulation The graph above indicates a normal menstrual cycle of 28 days, and the basal body temperature curve shows a standard high and low temperature biphasic change. From the beginning of menstruation – the day of ovulation, the low temperature period is 14 days; after ovulation, the high temperature continues for 14 days, of which the 14th day is the day of ovulation.
The graph above shows the basal body temperature curve of already pregnant, the high temperature lasts from day 15 to day 34, which has lasted for 20 days. Generally, a high temperature lasting more than 16 days is a sign of pregnancy.
The graph above shows the basal body temperature curve of no ovulation, with a continuous low temperature, no high temperature period, and no high or low temperature biphasic changes. If the measurement is found to be as shown in the graph, sisters need to go to the hospital to check what causes no ovulation, so that the right medicine can be prescribed and cured early!
The graph above shows the basal body temperature curve of luteal dysfunction causing a slow drop in body temperature. Generally speaking, when there is no conception, the concentration of luteinizing hormone will drop rapidly because the endometrium is about to shed. If the temperature drops slowly, it indicates that the luteinizing body is said to be malfunctioning, which is also not conducive to pregnancy.
Insufficient luteinizing hormone concentration causes a slow rise in body temperature during ovulation The graph above shows the basal body temperature curve of a slow rise in body temperature during ovulation due to insufficient luteinizing hormone concentration, which can be observed after ovulation on the 14th and a slow rise in body temperature on the 15th. This situation means that the concentration of luteinizing hormone in the body is not fast enough, thus causing a slow rise in body temperature. This usually means that ovulation is poor and the chance of conception is reduced.