Basal temperature level. BT graph for pregnancy

Women who have long planned pregnancy know that basal temperature Before ovulation should be below the one that was recorded in the second phase of the monthly cycle. The measurement of this value allows you to control the course of many physiological processes of the reproductive sphere. Temperature fluctuations on the chart and their deviations from the norm indicate problems from the female sexual area and even help to assume the causes of these violations.

The basal temperature (BT) is a temperature indicator of a woman's body, which is determined rectally. For diagnosis, it is necessary that the body is in a state of complete inactivity for a long time (at least 3 hours). That is why it is reliable to be BT, measured in the morning immediately after sleep, when a woman has not had time to get up.

The measurement of basal temperature is carried out by introducing a thermometer into the rectum. Most often, women practice such a technique during pregnancy planning to determine ovulation ( important processWhen the egg leaves the burst follicle). If you have a study regularly and display results on the chart, you can keep the reproductive processes under control, thereby increasing the chances of productive conception. Such accounts should be kept, starting from the first day of the cycle (first day of menstruation) before the next menstruation.

There are many subtleties and rules for maintaining and drawing up a temperature curve (read a detailed article, how to lead).

What will tell BT in the follicular phase

As you know, the monthly cycle of each woman consists of two phases separated by ovulation, that is, the moment of the follicle break, from which the ready-made egg is coming out.

The first (or follicular) phase is characterized by a period of maturation in one of the ovaries of the sexual geamet. This process Does not need high temperaturesindicators, therefore proceed against the background of a reduced basal temperature. Its optimal values \u200b\u200bin the first phase is considered to be the mark on the thermometer at 36.3 - 36.7 degrees Celsius.

Measuring the basal temperature in the first phase of the cycle allows:

• lead control over the reproductive function;
• determine the approximation of probable ovulation;
• diagnose the duration of the follicular phase;
• identify hormonal background.

BT before ovulation indicates the level of hormonal activity in the first phase menstrual cycle. Normal indicators Basal temperature B. follycular period Specify the sufficiently high Tutors of estrogen and low indicators of the number of progesterone in the body of a woman.

It is estrogens that affect the ripening of a normal egg and the adequacy of the preparation of the endometrium of the uterus to the likely implantation (implementation) fruit egg. The reduced level of these hormones is a sign of serious disorders of neurohumoral regulation and requires a thorough examination.

Ovulation

Approximately 2-3 days before the exit of the ovary of the mature gamet on the graph is recorded by the so-called ovulation price - a decrease in the basal temperature by 0.1 - 0.3 degrees. It is about 11-13 days of the cycle, when the follicle reaches its maximum sizes and is preparing to burst. Sept lasts the day (sometimes a few hours), after which the indicators are returned to the previous level.

Women do not always manage to fix the spare on the chart. It happens that it is too short in time, and does not coincide with the moment temperature measurement. It happens that it is not for individual features. So, a graph without ovulation vigor can also be considered normal, unless, of course, the remaining parameters do not go beyond the norm.

The ovulation itself is characterized by a sharp increase in temperature indicators in the rectum by 0.4-0.6 degrees, after which it is customary to talk about the occurrence of the second lutein phase. At all of its BT, it is held from 36.8 to 37.3 degrees, which averages 37.0 degrees Celsius.

Only in the case of the productive fertilization of the female eggs with a sperm of its partner to 7-12 days after conception, the temperature decline is noted with its subsequent raising, which in time corresponds to the attachment of the fetal egg to the endometry and is called implantation.

Normal and pathology

Changes in the normal graph of basal temperature indicate the development of disorders of the functioning of its sexual sphere in the body.

Increased BT after menstruation - the correct sign of the development of the inflammatory process in the uterine cavity or on the ovary. Also, the high basal temperature in the first phase may indicate a decrease in estrogen products, which inhibits ovulation and leads to secondary infertility.

According to experts, the ideal graphs of BT practically does not exist. Normally, each woman 1-2 times a year is found with annevulatory cycles, when a consistently increased basal temperature is recorded in the first phase without ovulation spare with a smooth transition in the second period of the monthly cycle.

In this case there is no reason for concern. You should contact a gynecologist if the high basal temperature is diagnosed after 3 months and more than 3 months and is accompanied by infertility, painful sensations In the field of small pelvis, menstruation violations and the like.

Not always the cause of "bad" charts are diseases of the genital organs and hormonal dysfunction. Measuring basal temperature is a process that needs strictly implementing all instructions, and any of their violation leads to a violation of the accuracy of the results obtained. The growth of BT indicators affect both external and internal factors, including:

• psycho-emotional shocks and stress state;
• increasing the total body temperature;
• reception of hormonal drugs;
• use on the eve of measuring BT of alcoholic beverages;
• bad Son. and frequent night trips to the toilet;
• sexual intercourse, perfect less than 6 hours before the measurement of the results.

If the listed reasons for increasing BT in the first phase of the cycle are missing, the situation is a reason for excitement. With this version of the development of events, the patient is recommended to seek advice from a specialist and exclude with ultrasound diagnostics The presence of the inflammatory process in the cavity of the small pelvis.

Believe this method

Despite the fact that the measurement is one of the most affordable and popular methods, many specialists are not inclined to trust its results. The reliability of such diagnostics can affect a number of factors that are not related to the condition of the patient's sexual system.

It is important to remember that the final diagnosis of doctors always put, relying on the results of more reliable research:

• analysis of the level of genital hormones in different phases of the cycle;
• ultrasound diagnostics of small pelvis organs, in particular, folliculosis.

Rectal measurement of basal temperature is used by many women to determine the likely ovulation day, which allows them to plan their pregnancy. But to trust this technique is 100% not worth it, since it is not its results can negatively influence a huge number of factors.

Measuring basal temperature is one of the methods of examination of the female organism, in particular, monitoring the functioning of the sexual sphere.

Fertility issues in the monthly cycle

Childness is the natural purpose of the female organism. therefore functional features Physiological processes are arranged clear, as well as in nature, which relates to reproduction issues. The range of development is laid in one menstrual cycle.

Important! The menstrual cycle is the period from the beginning of one month before the start of the following. It is at this time that conditions are created for conception, and their implementation or elimination of such an opportunity occurs.

Monthly cycle 2 physiological phases are held:

1. Follicular.
   At this stage, follicles increase, and the ripening of the egg, which is prepared for contact with seed liquid ends. The phase starts from the 1st day of menstruation and lasts, on average, half of the cycle, before the release of the egg from the follicle shells. Before ovulation (rupture of follicular shells), fertilization is impossible, so the phase is not considered predisposing to conception. During this period, the body is saturated with female sex hormones - estrogen, stimulating the ripening eggs.
2. Lutein.
   It comes in 1 - 2 days before fertilization and ends with the next menstruation or pregnancy. It lasts at least 10 days, more often 12 - 16, the conception is possible in the first 2 days. Increasing admission to organs hormonal selection Yellow Body - Progesterone promoting successful development pregnancy.

The duration of each phase is affected by many points:

• women's body stress resistance to stress;
• susceptibility to infections;
• hormonal security - this indicator is the most important, because Reducing or excess of the background of hormones in any phase reduces the likelihood of conception, and requires correction.

Measurement of basal temperature for several cycles in a row presents a fairly indicative picture female health and childbearing ability.

Tracing of temperature data

Tracking the correct alternation of the phases in the cycle makes it with the high probability to plan the pregnancy and implement a plan or avoid unwanted conception.

For the nicely functioning sexual sphere, the following indicators are characteristic:

• after menstruation (more precisely from 2 - 3 days of the first phase), the basal temperature is installed on a bit reduced level - 36.2 - 36.5 ° C;
• after the release of the egg (in the middle of the cycle), there is a noticeable increase of up to 37 ° C or somewhat higher (lutein phase);
• at the end of the first phase, for 1 - 2 days before ovulation, a one-day decline in indicators (0.1 - 0.2 ° C) is noted;
• before menstruation and at the beginning of menstruation, the temperature remains at the level of the second phase, and then decreases, the new cycle comes - if during menstruation numbers do not fall, then the fourth egg has occurred, the fruit egg is mplored and a pregnancy is developing.

Important! For natural method contraception based on the period of ovulation, in the first phase of the cycle it is recommended to receive additional measures Prevention, because The ripening of the egg does not always occur in the same time.

• the sensitive correct schedule divides the monthly cycle into two approximately equal parts (by duration) - in the first part of the tracking period, the figures are noticeably lower than in the second;
• elevated B. initial phase The temperature (but not reaching the indicators of the second phase) indicates a possible lack of estrogen, which makes it difficult for the ripening of an egg, and a significant reduced - about excess, which also does not contribute to the proper formation of conditions for fertilization;
• the reduced temperature in the second phase demonstrates the lack of progesterone - the conception at this time is possible, but fertilization does not always end with pregnancies, and when the fetal egg implantation appears, the probability of miscarriage appears;
• in the absence of a leap of temperature and maintain it on the same level during the entire cycle, they are talking about the monophasic period of the period - an inhibition cycle, which is not pathology, if it happens 1 - 2 times a year, and with regular appearance indicates infertility.

Important! Diagnosis of infertility can only be delivered by the doctor. For this indicators of temperature measurement graphs are not enough - need additional research and analyzes.

Comparison of temperature indicators of the normally occurring and anoint cycle is presented in the table.

Cycle Day	Norm	Anguulatory cycle
1	36,9	36,6
2	36,8	36,6
3	36.7	36.7
4	36.5	36.8
5	36.3	36,6
6	36.4	36.5
7	36.4	36.7
8	36.3	36.7
9	36.4	36.6
10	36.5	36.7
11	36.4	36.6
12	36.2	36.5
13	36.4	36.6
14	36.4	36.7
15	36.8	36.7
16	36.9	36.8
17	37.1	36.9
18	37.0	36.8
19	37.1	36.8
20	37.1	36.9
21	36.9	36.8
22	37.0	36.7
23	37.1	36.7
24	37.1	36.8
25	37.0	36.7
26	37.0	36.7
27	37.0	36.6
28	37.0	36.6
	menstruation
	time of alleged ovulation

Basal (or rectal) temperature called the body temperature is at rest after 3-6 hours of sleep. The measurement is made in the rectum, the vagina or in the mouth.

A feature of such measurements is absolute independence from the factors of the external environment. The method was proposed for more than half a century ago by the Englishman Marshall and is based on the gender hormones produced. biological effect, More specifically, the hypertermic effect that progesterone has on the thermoregulation center (i.e. it leads to an increase in temperature).

The measurement method of basal temperature is the most important test of the functional diagnosis of ovarian activities. Based on data is built graphic temperature measurement graphs.

Why measure?

Measuring BT (base temperature) is carried out:

• to determine the onset of ovulation - the most favorable period for conception;
• for the diagnosis of possible infertility;
• to determine safe sex without periods;
• to diagnose coming pregnancy on the most early timing;
• to detect hormonal disorders.

Most women do not quite seriously belong to this method And consider it as a clean formality.

In fact, by measuring BT get many meaningful information:

• about the normal flow process of the ripening of the egg and the time of its output;
• on the quality of the functioning of the endocrine system;
• on the presence of some gynecological diseases (for example, endometritis);
• on the time of the onset of the next menstruation;
• on the state of ovaries and according to their activities norm.

How to measure basal temperature

To obtain sufficient information and objective data, the basal temperature should be recorded at least three cycles in a row.

It should take into account the possibility general temperature increase (including basal) due to:

• diseases;
• stress;
• overheating;
• meals;
• exercise.

You can use the usual mercury or electronic thermometer. With the help of a mercury device, BT is measured within 5 minutes, the electronic can be taken after the measurement expiration signal.

Rules for measuring BT.

What is considered the norm?

Prior to the preparation of the graph, it is necessary to know how BT changes normally under the influence of hormones. Monthly cycle of woman is two-phase:

• the first phase is hypothermic (follicular);
• the second is hyperthermic (lutein).

During the first, the follicle is developed. In the future, an egg is coming out of it. During this period, an increased synthesis of estrogenes of the ovaries occurs. Basic temperature holds at the level below 37 degrees.

Approximately 12-16 days (between two phases) occurs ovulation. Immediately the day before there is a sharp drop in the base temperature. In the period of ovulation temperature reaches a maximum, rising by 0.4 - up to 0.6 degrees. On this basis, it is possible to reliably judge and the occurrence of ovulation.

The duration of the lutein phase (or the phase of the yellow body) is approximately 14 days. It is completed with menstruation (except in cases of pregnancy). This phase has a very importantbecause the yellow body prepares female organism Pregnancy by maintaining a high level of progesterone and low - estrogen. BT indicator at the same time it is 37 or more degrees.

Right before menstruation, as well as in the first days of the new cycle, fixed lowering BT about 0.3 degrees, and the whole process is repeated.

For normal condition Health must be observed described temperature fluctuations. The absence of raising periods with further decays indicates the absence of a ovulation process, which is infertility.

ATTENTION!!!
on the presence of ovulation or its absence,
quality and duration of the yellow body phase
You can not judge only on the graphics of basal temperature

Measuring basal temperature (BT) can help determine:

• - whether ovulation occurs;
• - when to expect the following menstruation;
• – possible deviations from the graph in the current cycle;
• - Does pregnancy occur in the event of a delay or unusual menstruation.

Benefits of the method:

• - the easiest and most affordable method for home use from all existing;
• - when regular temperature measurement allows you to determine the cause of the delay - late ovulation, lack of ovulation or pregnancy (more than 18 days increased temperatures), provided - if graphics reflect the real picture.

Method disadvantages:

• - does not give information about the deadlines of the upcoming ovulation, i.e. does not allow to predict its offensive;
• - does not give absolutely accurate information about the deadlines of the ovulation - the temperature can rise both the next day, and a few days after ovulation (this is within the normal range), or it will differ much from the picture in the first phase at all (this is also normal if the results Ultrasound and hormones normally);
• - does not give accurate information about the presence of a full ovulation even if there are two-phase graphs (for example, in the case of premature luteinization of the follicle);
• - does not give information about the function of the yellow body - neither the length of the phase (the temperature may rise and a few days after ovulation), or about the level of progesterone produced by the yellow body (the degree readings do not allow to determine the quantitative level of progesterone in the blood - to assess the level of progesterone, it is necessary pass the blood test a week after ovulation);
• - does not give accurate information about the absence of ovulation in cases of absence of an explicit second phase on schedules (in this case, it is necessary to monitor and in the presence of ovulation on ultrasound - to pass the blood test to progesterone a week after ovulation, if the results of both studies are normal - can be considered such graphs "feature" of the body and stop measuring the temperature, if it is not indicative);

When identifying any "violations" it is important to remember that they should not be based on graphs of basal temperature (BT) - even for several observation cycles, not to mention the results of observation in the unit cycle. This is thus the huge number of false "diagnoses" and is appointed "treatment", which not only does not need, but can also cause great harm to a completely healthy woman.

• You can measure the temperature in any way - in the mouth, in the vagina or in the rectum. Remember only that for one cycle, the measurement method must be the same.
• Measure the temperature at the same time every morning without getting off the bed and immediately write the indicators. The temperature should be measured throughout the cycle, best - and during menstruation.
• If you use a digital thermometer, wait until it sounds, usually in a minute. An ordinary glass thermometer should be kept for about 5 minutes. Digital thermometers, as a rule, give a clear picture of climbs and recess temperatures, but if something confuses you in the results, it is better to use glass. It is advisable to use one thermometer throughout the entire cycle. If you for some reason changed a thermometer - make a mark on it (different thermometers of measurement errors may differ).
• Try to make measurements at the same time, plus-minus about an hour. If you sleep longer on weekends, or for some other reason, the measurement time is significantly different from the usual, do not forget to mark this fact in the chart. Each extra hour of sleep raises the temperature for one tenth degree.
• Measure the temperature after at least three hours of continuous sleep. If, for example, you usually get up at 8 o'clock, but once were forced to get up at 6 o'clock to go to the toilet, it is better to measure the temperature at 6 o'clock before standing (and do not forget to make a note about it in your graph). Otherwise, you will have only two hours of continuous sleep (from 6 to 8 hours), which will affect the accuracy of measurements.
• If you use a glass thermometer, do not forget to shook it on the eve (the shaking of the thermometer immediately before the measurement will affect the accuracy of the result).
• It should be noted that for a more accurate interpretation of the graph, it is necessary to observe at least 3 months.

Temperature graphics

The best record testimony in the chart immediately in the morning. But if it is impossible, you can leave the case before the evening, since the thermometer readings will not change until you remove them (from digital) or do not shame (from glass). Take care only to keep the thermometer to stay in the sun. If the thermometer readings lie between two digits, write down the lower one. All extraordinary conditions (illness, stress, travel, etc.) should be marked in the column "Miscellane", and then taken into account when deciphering the schedule.

If the temperature seems to you unusual, for example, too high (the cause can be a disease, poor sleep or drunk alcohol on the eve), wait until next day And only then draw the connecting line. Exclude "unusual" temperatures, connecting with a dotted line normal testimony. Try to install and mark the possible cause of deviation in the graph.

Since basal temperature responds to various factors, the interpretation of the basal temperature indicators requires special attention. Therefore, it makes sense to make special marks about these factors. And they include: a disease with an increase in temperature (fever), drinking alcohol on the eve, stress, sleepless night. So, if you had insomnia, specifically mark this fact.

The BT record table has the following form:

THE DATE	Cycle Day	T O.	Discharge	Other
12th of August	14	36.3	sticky, White	woke up early
August 13	15	36.5	egg white	yesterday celebrated birthday
August 14	16	36.4	egg white
August 15	17	36.7	dry
August 16	16	36.8	dry
August 17	16	36.9	dry

A detailed form of observation recording is very helpful to the woman itself and her doctor understand possible reasons Sugoons of pregnancy, cycle disorders, etc.

The selection graph includes a state of cervical fluid. In the period close to ovulation, cervical fluid has the most watery consistency. (Do not confuse seed fluid after sexual intercourse with cervical!). Read more about the cervical liquid can be read in the book Tony Veshler "WITH WILL BY? .." (Fifth Chapter).

The Count "Other" includes factors that can affect BT: colds with an increase in temperature, sex in the evening (and even more so in the morning), taking alcohol, measurement of BT in an unusual time, later exit to sleep (for example, lay down at 3 o'clock, And measured at 6 o'clock) and much more.

The schedule for clarity is better to build on a sheet of ordinary paper into the cell. On one sheet there is a temperature for the whole cycle (but not a month!). One cell corresponds to one day horizontally and 0.1 degrees vertically.

How to determine the moment of ovulation

The main purpose of building charts is to determine the time of ovulation in each specific cycle. In order to determine the days of ovulation carefully examine your schedule.

Previous temperatures are kept at a low level due to estrogen, while after ovulation heat-producing progesterone raises them to more high level. Lifting basal temperature means that ovulation has already occurred. This feature is not evidence of an ovulation approximation in contrast to the other two signs - cervical fluid and the position of the cervix. You should also know that the drop in temperature at the time of ovulation is only a very small number of women. Since a sharp drop in temperature occurs extremely rarely, this feature cannot be absolutely reliable when determining the ability to conceive, therefore, to determine the approach of ovulation, it is better to use the two other above-mentioned signs.

Options for lifting temperature:

The standard type of temperature lifting clearly shows the low temperature level, then a sharp rise of at least two tenth degrees and the next level of high temperatures that remains until the end of this cycle. Graphs of this type are common to most women. However, there are three more different types of lifting graphics:

• Stage ascent. The temperature rises with a sharp jump, the day is held three on the same level and makes one more sharp jump.
• Gradual ascent. Temperature rises gradually. Lifting at 0.1 degrees per day. The day of ovulation is determined by various additional criteria.
• Lifting with refund. The temperature begins to rise, the next day drops below the separation line and then rises again.

Important to remember!

A small temperature difference between the first and second phase is not pathology, and may be a feature of the body, if all hormones are normal.

If menstruation is absent, and the temperature is held within the second phase over 18 days - this indicates possible pregnancy . Also, if menstruation is scarce or unusual, and BT holds on increased level - Pregnancy is possible against the background of the threat of interrupt.

If, throughout the entire cycle, the temperature on the graph holds approximately one level or the schedule has the form of the "fence" (low temperatures are constantly alternate with high), it means that in this cycle ovulation was most likely not - anointulation. To establish the presence or absence of ovulation, ultrasound monitoring is required for several cycles. Healthy women are allowed for several annovulatory cycles for the year, but if such a picture is observed in all cycles - this is a reason for concern.

Basal temperature (BT) is the lowest temperature. human body, Measured at rest. Determining the level of basal temperature allows you to predict the offensive of ovulation and determine the pregnancy in its earliest periods. The technique also enters the scheme of naturally regulating the conception and is used to identify various gynecological diseases.

Measurement rules

When determining basal temperatures, you must adhere to certain rulesOtherwise, the data obtained may be incorrectly interpreted:

1. BT is determined only in the rectum. Measuring the temperature of the armpit or in the mouth does not give reliable results.
2. Measurements are carried out in the morning, without getting off the bed before the start of any physical activity. For convenience, keep the thermometer at hand.
3. Before starting the study, at least 4 hours of calm continuous sleep should be held.
4. The measurement of BT is carried out by an electronic thermometer - the same. You can use a mercury thermometer, but with great care.
5. The study should take approximately at the same time day. Deviations are allowed 30-60 minutes to any side.
6. Research time is at least 5 minutes.
7. During menstruation, the break is not done.

The obtained data is recorded daily in the table. In the future, on the basis of the identified results it will be possible to make certain conclusions. To estimate the menstrual cycle and detect gynecological pathology It is recommended to measure basal temperature at least 3 months in a row. It is advisable to start a study on the first day of the menstrual cycle (i.e. the first day of menstruation).

Is it possible to measure basal temperature during the day? Yes, after a 4-hour sleep. Unfortunately, such results are often unreliable, so they are not recommended to focus on them. If a woman works in a night shift, she can conduct research in the afternoon, provided that it is its usual, practically no change in labor and recreation mode for many months.

Measurement of basal temperature

The study is carried out in such situations:

• Disorders of the menstrual cycle (with suspected hormone imbalance).
• Diagnosis of pregnancy in early time.
• Determining the time of the offensive of ovulation.
• Within the framework of MRP (the method of recognition of the fertility as natural Fashion contraception).
• Evaluation of hormonal background with some gynecological diseases (including infertility).

In most cases, the measurement of basal temperature is prescribed when planning pregnancy and identify the causes of infertility. This examination will be useful and when searching for factors leading to disruptions of the menstrual cycle (latency of menstruation, lengthening or shortening cycle, etc.).

Measuring basal temperature is not carried out in such situations:

• If a woman does not have the ability to measure the temperature at about the same time (a special schedule of work, etc.).
• In the presence of sharp inflammatory processes or exacerbation of chronic pathology leading to an increase in the total body temperature.

In the latter case, the study will be non-informative. It is recommended to wait for recovery and only after that return to the measurement of basal temperature.

Important aspects

There are factors affecting the level of basal temperature:

• bad sleep (frequent awakening, need to get up in bed at night);
• stress;
• diseases of the digestive tract (including diarrhea);
• ORVI (even without increasing the temperature of the armpit);
• alcohol intake;
• intimate proximity;
• long flights;
• changing time zones, climate;
• reception medicinal preparations (including hormonal, sedative, sleeping pills).

All these factors should be noted in the table and take into account when interpreting the results.

Basal temperature and menstrual cycle

The definition of basal temperature plays a big role in the assessment of the menstrual cycle of a woman. Consider changing the parameters using the example of a normal 28-day female cycle.

The first (folliculic) phase of the menstrual cycle lasts from 1 to 14 days and is under the influence of estrogen. At this time, follicles ripen and is allocated among them dominant. BT level during this period remains ranging from 36.1 to 36.7 ° C.

Ovulation at a 28-day cycle comes to 13-14 days. The maturation and exit of the egg coincides with the peak of the LG level (lutenese hormone). During the day before ovulation, the basal temperature drops by 0.5 ° C. Directly at the time of ovulation BT rises again, reaches a mark of 37.0 - 37.4 ° C and remains at such a level the second phase of the cycle.

The second (lutein) phase is under the influence of progesterone. Endometrium is growing, preparing for possible implantation of a fetal egg. If fertilization has not happened, a yellow body is formed on the site of the follicle. From 14 to 28 days of cycle, the basal temperature remains above 37.0 ° C. The decline in the indicators occurs only before the menstruation itself, for 24-48 hours. During monthly BT bleeding remains low (from 36.1 to 36.7 ° C).

Basal temperature and pregnancy

If the child conceived, the basal temperature remains high during the entire I trimester. It holds at 37.0 - 37.4 ° C, and only on the period after 14 weeks it begins to decline gradually. In the II and III trimesters, the basal temperature is recorded in the range of 36.4-36.7 ° C.

The increase in basal temperature during pregnancy indicates such states:

• inflammatory process in the appendages and the uterus, the organs of the small pelvis, the intestines;
• common infectious process.

Low base temperature occurs in such situations:

• threat of abortion;
• the beginning of the miscarriage;
• regressing pregnancy.

In all these situations there is a decrease in the level of progesterone, which determines the change in the base temperature indicators. With any deviations from the norm, you should report this to the doctor.

Decoding results

With the right measurement of basal temperature, a woman can find answers to the most important questions:

• The menstrual cycle normally flows normally, and there is no deviations.
• Does the ripening of follicles occur whether it is worth expecting ovulation.
• Was there any ovulation in this cycle, and which day it happened.
• Whether the child's conception occurred or the occurrence of menstruation occurred (it is possible to determine its arrival 24-48 hours before the start of bleeding).

Deviations from a normal chart make it possible to suspect endocrine pathology, assuming the causes of infertility and to identify some complications in the early pregnancy.

Normal indicators

To estimate the menstrual cycle, it is necessary to make a graph of basal temperature at least three months in a row. The schedule is built on a sheet into a cell. The coordinate axis is drawn, where the verticals will be indicators of basal temperature, and horizontally - cycle days. Each day of the cycle will correspond to its mark on the graph - the level of basal temperature. At the bottom of each day of the menstrual cycle, factors that could affect the temperature (stress, sexual intercourse, disease, etc.) are necessarily indicated.

Normal menstrual cycles:

• The total length of the cycle is 21-35 days (from the first day of one menstruation until the first day of the other).
• The duration of the second phase of the cycle is always 12-14 days.
• The duration of the first cycle phase may vary. The minimum duration is 7 days.

Normal basal temperature values \u200b\u200bare presented in Table:

Options for temperature curves

Several varieties of graphics are distinguished when measuring BT:

I type

Characteristics:

• A stable increase in BT in the second phase of the cycle is not less than 0.4 ° C.
• There is a pre-shifted and premenstrual decline of BT.

Such a graph corresponds to a normal two-phase menstrual cycle (it was mentioned above in detail).

II type

Characteristics:

• There is a slight increase in BT in the second phase of the cycle: no more than 0.2-0.3 ° C.
• The duration of the second phase is 12-14 days.
• There is a slight pre-deputy and premenstrual reduction of BT.

Such a schedule indicates estrogen-progesterone failure and requires mandatory examination at the doctor's. It is necessary to assess the level of the main hormones in each phase of the cycle and find out the reason for such changes. Such a condition often threatens infertility.

III type

Characteristics:

• The increase in BT in the second phase of the cycle shortly before menstruation is 0.4 ° C.
• The second phase lasts less than 10 days.
• No premenstrual reduction BT.

Such a graph indicates the insufficiency of the second phase of the cycle (lutein deficiency) and indicates a low level of progesterone (absolute or relative at high estrogen concentration).

Possible causes of insufficiency of the second phase:

• The pathology of the ovarian: syndrome of resistant or depleted ovaries, syndrome of hypership of ovaries, ovarian polycystosis, etc.
• Diseases of the thyroid gland.
• Pathology of pituitary gland: hyperprolactinemia, pituitary hypogonadism.
• Organic genital diseases: endometriosis, endometrial hyperplasia, uterine myoma, polyps, tumors.
• Inflammatory diseases of the uterus and appendages: endometritis, salpingoophoritis.
• Pathology of other organs: hepatitis, cirrhosis of the liver, etc.
• Status after abortion, scraping of the uterus for other reasons.
• A sharp decrease in body weight (long starvation, diet, diseases of the digestive tract).
• Strong stress.
• Sharp climate change, time zones.
• Excessive physical exertion.
• Reception of narcotic drugs.

The lack of lutein phase threatens infertility or non-abstraction of pregnancy. To correct this state, it is necessary to find out the cause of the failure. According to the testimony is carried out hormonal therapy. During pregnancy, support is needed by progesterone drugs.

IV Type

A monotonous curve on the chart is noted: BT remains within 36.1 - 36.7 ° C throughout the cycle. No ovulation. Such a cycle is considered an inhibent.

Anguulatory cycle is an option of the norm. It is believed that each healthy woman 1-2 cycles per year can be without ovulation. With age, the number of inhibition cycles increases. During the period of puberty and with the onset of Klimaks, most of the cycles are undergoing without ovulation. The conception of the child this month is impossible.

Frequent anovulature cycles in a woman in reproductive age - This is a pathology. The reason can be different endocrine diseases, the pathology of the ovaries and others. For accurate diagnosis and development of therapy scheme, it is necessary full examination In the gynecologist endocrinologist.

V Type

There is a chaotic temperature curve. The scope of the indicators does not fit into any of the well-known options and is not amenable to any logic. Such a schedule is found in estrogen deficiency. The offensive of pregnancy in estrogen failure is under a big question.

A single chaotic schedule should not scare a woman. Such a failure may occur during stress, changing climate, exacerbation of various extragenital diseases. If in the future the schedule is normalized, treatment is not required. Chaotic temperature curve for two or more months requires a compulsory survey from a specialist.

Measuring basal temperature is a simple and affordable method for assessing the state of the female reproductive sphere. Regular compilation of the schedule allows you to predict the offensive of ovulation and menstruation, detect pregnancy in the early terms and to identify the impairment of the menstrual cycle. The determination of the level of basal temperature is practiced in the diagnosis of endocrine infertility and other gynecological diseases.