At present, the most common applications are external observation and rectal examination
1 External observation method
Pregnancy performance: Cycle estrus stopped, appetite increased, hair appeared shiny, temperament became meek and slow. In the second half of gestation, the abdomen is asymmetrical and the right abdominal wall protrudes. Eight months later, fetal movement was seen on the right abdominal wall.
2 Rectal examination.
This method is the most commonly used and reliable method of pregnancy diagnosis. The main basis for rectal examination to determine whether the dam is pregnant is some major changes in the reproductive organs after pregnancy. These changes need to be emphasized with the different time of pregnancy, such as in the early stages of pregnancy, the shape and texture of the uterine horns should be the main change; 30 days later, the size of the fetal bubble mainly; when the formation of fetal cells, that is, with fetal Cell development is predominant; when the fetal cell subsidence is not easy to touch, the position of the ovary and the gestational pulse of the uterine artery can be dominant.
In the 19-22 days of gestation, the ovaries of the ovulation had gestational corpus luteum protruding from the surface. The volume of the ovaries was greater than the contralateral side, and no significant changes were observed in the uterine horns on both sides. The walls were thick and elastic when touched. If the erection of the uterus is obvious, there is no obvious corpus luteum, and there is a follicle larger than 1 cm on one side of the ovary, indicating that it is in heat.
In 30 days of pregnancy, the uterine horns on both sides were asymmetric, and the gestational angle was slightly thicker and larger than the empty angle. There was a feeling of fluid fluctuating. The uterine wall was significantly thinner at the most enlarged gestational angle, and the empty horn was hard and elastic. The curvature was obvious. . Gently hold the gestation angle with your hand and slide it from one end to the other. There is a feeling that the membrane capsule slides across the fingers. If you gently lift the uterine horn with your thumb and index finger, and then relax, you may feel that there is a layer of film sliding in the uterine wall. This is the unattached fetal membrane.
In 60 days of gestation, the gestational angle is significantly thicker, which is equivalent to twice the empty angle. The gestational angle fluctuates significantly, and the uterine horns begin to descent into the abdominal cavity, but the entire uterus can still be touched.
On the 90th day of pregnancy, the cervix was pulled to the front of the pubic bone. The gestational angle was as large as volleyball. The sense of volatility was obvious, and the empty angle was also significantly thickened. The uterine artery at the gestational side began to show a weak specific beat.
120 days of pregnancy, the uterus and fetuses all submerged into the abdominal cavity, the cervix has crossed the front edge of the pubic bone, generally can only touch the uterus and the cotyledons, such as the size of the beans, the specific pulse of the uterine artery is obvious.
Thereafter, until delivery, the uterus grows further, sinks into the abdominal cavity, and even reaches the sternal region. Both sides of the uterine artery are thickened, and more specific beats occur. When the hand touches the fetus, sometimes fetal movement occurs reflexively.
Mercury Rod Type Glass Thermometer
Products Description
The normal-temperature thermoscope is a glass-stem thermometer with a sheath, whichcan display the temperature value of the measured point on site.
Note:
For thermometers starting from high temperature, note that there is a conical bubble above the temperature bubble. Sometimes, segments will break during transportation or storage, which is a normal phenomenon of thermometers.It's completely repairable.If there is a break in the thermometer, if the top column of mercury and the bottom section of gas can be cooled into a conical bubble, a broad downward swing will connect them.Repair the broken joint of the thermometer by cooling.The idea is to cool or heat the mercury column and the broken joint to the widest part of the area.
Compare the differences in degree of certainty:
Ordinary thermometers are very simple. Some thermometers have only two points, zero, fifty or one hundred.Most thermometers in circulation in the market are of two points.And the degrees are very irregular, so let's say zero degrees, the ice water mixture doesn't break the ice and scoop a ladle of cold water into it or the ice water mixture, you throw a bunch of thermometers in there and you start to measure.No matter where the liquid level is, mark 0 on the top of the mercury column of the thermometer. Wrong method.Setting a temperature of 100 degrees is not simply a matter of throwing boiling water into it.
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