Basal body temperature refers to the body temperature of a person in a quiet and awake state, mainly refers to the body temperature measured when there is no emotional fluctuation, no muscle activity, no eating, and no high temperature or low temperature environment, so it is also called "resting body temperature". For ordinary people, it is not important whether the measured body temperature is basal body temperature, and basal body temperature is more used for body temperature detection of women of childbearing age. During the one-month physiological cycle of women, the body temperature will fluctuate with the change of hormones. By dynamically observing the changes of basal body temperature in different periods, the different states of the female reproductive system can be judged. Therefore, the measurement of the basal body temperature specifically has the following functions.
Progesterone can excite the thermoregulatory center of the hypothalamus, and after progesterone is secreted, it will promote ovulation. At this time, the basal body temperature will increase by 0.2-0.5 ℃, and the body temperature will always be at a high level before the next menstruation. The junction of the hypothermia curve is the ovulation date of the ovary, which is used to monitor ovulation in women. For women of childbearing age with regular or irregular menstrual cycles, accurate monitoring of ovulation date and ovulation cycle through the monitoring of basal body temperature is helpful for successful conception.
Taking the ovulation day as the boundary, there will be biphasic changes in body temperature that are low before ovulation and rise after ovulation, indicating that the corpus luteum function is normal. day, it suggests luteal insufficiency.
If the luteal phase (that is, the period when the body temperature rises after ovulation) is prolonged, and the basal body temperature continues to rise for 20 days without falling, it indicates the possibility of pregnancy; within 3 months of the first trimester, if the basal body temperature drops significantly, even if it has not happened yet Abdominal pain, vaginal bleeding and other manifestations still need to be highly suspected of the possibility of threatened abortion.
For women with irregular menstruation, due to the uncertainty of the bleeding time, it is easy to misdiagnose or miss the diagnosis of bleeding female diseases. The monitoring of basal body temperature can be used to determine whether it is a normal ovulatory menstrual period or other bleeding diseases.
Some hidden hypothermic diseases, such as endometriosis, pelvic tuberculosis, etc., will have a high basal body temperature. Whether the basal body temperature measurement method is correct directly affects the accuracy of the basal body temperature. The following points should be paid attention to:
(1) It is usually recommended to measure the basal body temperature when you get up every morning, and place the thermometer in a place where you can take it by the head of the bed or pillow.
(2) Take measurements without getting out of bed and eating breakfast. Avoid muscle contractions caused by taking a thermometer or an increase in body temperature due to eating. Take body temperature immediately after waking up in the morning.
(3) The usual method is to measure and record the basal body temperature on the 5th day of the menstrual cycle, and observe and record the menstrual flow.
(4) When approaching the ovulation period, it is necessary to observe and record the vaginal discharge.
(5) If there is intercourse, insomnia, cold, vaginal bleeding, etc., it needs to be specially marked.
(6) You need to have the patience to do continuous and multiple measurements and records in order to understand your ovulation cycle and ovulation day.