Dog Surgical Diseases – Postpartum tetany
Postpartum tetany is a metabolic disease characterized by hypocalcemia. Manifested as muscle tonic spasm and disturbance of consciousness. The disease can occur before delivery, during delivery, and after delivery, but it is most common during the 2 to 4 weeks postpartum, and it is more common in female dogs with high lactation.
Calcium deficiency is the main cause of the disease. The formation and development of fetal bones requires a large amount of calcium from the mother’s body, and part of the calcium is also excreted with milk after delivery. If the female dog does not receive calcium timely supplementation, the body will be deficient in calcium, which causes increased excitability of the neuromuscular and eventually tonic contraction of the muscles.
The onset is usually sudden, without warning. At the beginning of the illness, symptoms of mental excitement appeared, and the sick dog was restless, timid, occasionally wailing, and walking awkwardly. Shortness of breath. Symptoms of convulsions appear soon, intermittent or tonic spasms of muscles, stiffness of the limbs, wobbly gait, and even lying on the floor. Body temperature rises (above 40C) and difficulty breathing. The pulse is quickened, the mouth is foaming, and the visible mucous membrane is blue-purple . From the onset of symptoms to the onset of cramps, the shortest period is about 15 minutes, the longest period is about 12 hours, and the passage is more rapid. If not treated in time, he will suffocate and die more than 1 to 2 days later. Rapid diagnosis is very important, combined with clinical symptoms, the detection of blood calcium content, such as blood calcium below 0.67 millimol/l (6 mg/100ml) can be diagnosed.
Inject 5-20 ml of 10% calcium gluconate intravenously (must be injected slowly), while intravenous injection of sodium pentobarbital (dose of 2 to 4 mg/kg body weight) or chlorpromazine hydrochloride (dose of 1.1 to 6.6) Mg/kg body weight·times. Intramuscular injection) to control spasticity. The bitch takes calcium tablets by mouth or adds calcium to the food. To prevent postpartum tetany, adequate calcium, vitamin D, and inorganic salts should be provided in food before and after delivery. Pay attention to the balance and adjustment of rations during lactation.