Disomes with dogs refer to obstetric diseases in which the fetus cannot be delivered smoothly when the dog is pregnant for full term. Natural birth and some difficult births at the beginning can be transformed into each other under certain conditions. External disturbances and incorrect intervention can turn natural birth into difficult labor; while difficult labor that may have occurred can be prevented due to timely diagnosis and midwifery. During the difficult labor process, if the treatment is not done in time or improperly, it will not only cause death of the female dog and the fetus, but also often develop reproductive organ diseases, leading to later infertility. Therefore, it is very important to actively prevent and correctly handle difficult labor.

1. Clinical manifestations of difficult labor

(1) The expected delivery period of a female dog is normally 58~63 days, generally 60~62 days, and the number of pregnant days of a female dog exceeds 72 days.

(2) The female dog showed signs of pre-production such as picking up things and laying a nest, and she tried her best and a small amount of urine accompanied her. After 6 to 10 hours, no fetal output was seen.

(3) The fetal water has flowed out for 2 to 3 hours, but there is no responsibilities.

(4) The vulva secretions are green, but there is no fetal output.

(5) After 1 or several heads were produced, there was no continuous contraction after more than 4 hours, but there was still a fetus in the abdomen palpation or birth canal.

(6) The birth canal abnormalities, such as pelvic fractures, fetus stuck in the birth canal, etc.

2. The principles of handling difficult labor: First, both the nanny and the child are protected, so that the fetus can produce and survive, and the mother and son are safe. The other is to abandon the child and nanny, and try to ensure the safety of the female dog.

(1) For female dogs who are contracting and unable to do so, they can lead the female dog to exercise to promote birth canal restoration. Then insert the index finger into the female dog's vagina and perform pushing or walking-like activities to stimulate the side wall of the vagina and induce uterine contraction. You can also use oxytocin and other induced labor drugs to promote uterine muscle contraction, and at the same time, you can cooperate with pressing the abdominal wall to promote the elimination of the fetus. If the hands or instruments can touch the fetus, wash and disinfect your hands, use the index finger and ring finger to penetrate into the female dog's birth canal or use the hemostatic forceps and other equipment to help the female dog to take responsibility and gently pull the fetus out.

When oxytocin is used to induced labor, it must be administered if the cervical orifice is open, the fetal position is normal, the fetus is not malformed, and the weight is not large. The use of induced fertility drugs must be strictly controlled according to the prescribed dose. Generally speaking, the maximum dose of oxytocin should not be used for more than 10 IU/time. If the female dog does not respond 30 minutes after oxytocin, it can be used again. If the dosage is too large, it will often cause ankylosing and death of the fetus in the uterus. In severe cases, it will lead to uterine rupture and both mother and baby die.

Under conditions, for female dogs that are unable to produce due to difficulty, while applying oxytocin, 10% calcium gluconate can also be injected intravenously to enhance uterine contraction, or intravenous injection of glucose to supplement energy to enhance the female dog's physical strength and restore the female dog's abdominal wall contraction and ability to work hard.

(2) For difficult labor caused by small vulva, when there is difficulty in passing the fetus, vulva can be incision, and surgical treatment of the expansion site after the fetus is delivered.

(3) For female dogs with mild fetal abnormalities, correct and traction should be avoided. Before the midwife, wash and disinfect both hands, and use the index finger and ring finger to penetrate into the female dog's birth canal to determine the fetal position. If the fetus has entered the birth canal and cannot be adjusted, the fetus should be pushed back during the female dog's efforts and then adjusted the fetus position. After the fetal position is adjusted correctly, borrow the female dog to take responsibility and gently pull the fetus out. For those whose fetus is dead or whose fetus is too large, the fetus can be cut and removed by intercepting the fetus.

(4) For difficult labor caused by two fetuses entering the birth canal at the same time, midwife can use certain instruments to lead out the fetus stuck at the entrance of the female dog's pelvis to relieve the difficult labor.

(5) For dogs with uterine ankylosing or premature rupture, they should be calmed and lubricated with liquid paraffin before performing midwifery.

(6) If none of the above methods are effective, a caesarean section must be performed in a timely manner. During laparotomy surgery, special attention should be paid to hygiene and disinfection, and care should be strengthened after the operation to prevent infection.