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.
On the 30th day of gestation, the uterine horns on both sides were asymmetric, and the gestational angle was slightly thicker and larger than the empty angle. The feeling of fluid fluctuates. The uterine wall at the most enlarged gestational angle is significantly thinner, and the empty horn is harder and more elastic, and the curvature is 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.
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