Fetal dystocia in dogs. When the fetal position is longitudinal, and it is only caused by the flexion of a joint in the forelimb or hind limb, after observation with veterinary B-ultrasound, the fetus can be pulled out after the position of the fetus is artificially corrected. According to veterinary B-ultrasound observation, if the fetus is transverse or the limbs are too twisted to be corrected, abortion can be performed to ensure the safety of the mother dog.

Caesarean section for the mother dog. When dystocia cannot be solved by artificial delivery, caesarean section is required immediately. It is best to use veterinary B-ultrasound to check before caesarean section. The linea alba or lateral abdominal wall incision can be used. The lateral abdominal wall incision is conducive to the lactation of puppies and avoids infection of the incision. Routinely cut the various layers of the abdominal wall. When making an incision on the linea alba, be careful not to injure the enlarged mammary glands on both sides of the incision. Gently pull out one uterine horn by hand and isolate it from the incision with sterile gauze. Make a longitudinal incision of 4 cm to 6 cm in the greater curvature of the uterus. Gently squeeze the fetus near the incision. When the fetus is pushed to the incision, pull it out and the fetal membrane together, and ligate or cut the umbilical cord. Take out the fetus on this side one by one. It is best to take out the fetus in the other uterine horn through the same incision. If there are many fetuses or the uterus contracts strongly, the opposite uterus can also be cut open, and the uterus can be sutured after the placenta is completely removed. Rinse the uterus with warm penicillin saline and return it to the abdominal cavity. Close the abdominal cavity with conventional methods and wrap the abdominal bandage. After the operation, veterinary B-ultrasound should be used frequently to observe the postoperative condition.

Grasp the breeding age. After veterinary B-ultrasound examination, the development of the pelvis, uterus and birth canal of immature dogs has not met the requirements for reproduction. Therefore, dogs should not be bred when they have just reached sexual maturity, but should be bred when they are physically mature to prevent dystocia caused by early breeding, and veterinary B-ultrasound should be used to observe the growth of their follicles.