First correct the fetal position, the assistant lifts the female dog's hind limbs, the surgeon injects 3 to 5mL of paraffin oil or soybean oil into the female dog's vagina, disinfect the right hand and insert it into the vagina, cooperate with the left hand outside the abdominal wall, push the fetus into the pelvic cavity, and then correct the fetal position.
If there are other fetuses in the body, first push back the fetus that is inappropriate to the rear and make a space to correct the fetus. For horizontal, vertical, lower, side, and front-facing, the inner and outer hands should be used to squeeze the massage in one direction. After the fetal position is corrected, insert the right index finger into the vagina for examination.
The cervix mouth is fully opened, the membrane is not broken, and the pelvis is normal, the fetal extrusion method can be used, that is, a wide, wet and hot towel is wrapped tightly on the abdomen from the diaphragm and the pelvis, and squeeze the fetus while the female dog's uterus is contracted. The right index finger pulls the fetus' head or buttocks outward, and the assistant takes the female dog's vagina and pulls the fetus out with the lubrication effect of oil. If it fails at one time, it can be repeated multiple times until it is successful.
First perform side tangent and cut 2 to 3 cm above the vagina to expand the diameter of the birth canal. When the fetus approaches the vagina, the surgeon uses his right hand to open the labia and expand it to both sides with force.
Assistant massages the uterus through the abdominal wall to promote regular contraction of the uterus. When the uterus contracts, press the abdomen to increase abdominal pressure. When the fetus is exposed to the vagina, the surgeon pulls the fetus with his left hand and pulls it out.