Acute Metritis

Acute Metritis: An infection of the uterus.


What is metritis?

Metritis is a serious bacterial infection of the uterus. It usually occurs within a week of whelping or queening, but occasionally occurs after insemination or breeding. The infection can spread to the bloodstream and cause sepsis (whole body infection).

What causes metritis?

Bacteria invades the uterus, most commonly right after birth when the uterus is most susceptible. The germs usually originate in the vagina. This is more likely to happen if there has been a dystocia (difficult birth), or retained fetuses or placentas.

What are signs of metritis?

A cardinal sign of metritis is an abnormal discharge from the vulva, a pus and/or green or brown colored fluid with an unpleasant odor. Depression, loss of appetite, fever, poor mothering, and decreased milk production are also common.

How is metritis diagnosed?

Your veterinarian may suspect metritis after examining your bitch or queen and obtaining the history, but will probably want to run several tests to confirm the diagnosis and check for any underlying cause. A blood count is performed to look for response to infection. Vagina cell(cytologic) examination under the microscope will allow a check for germs and pus in the reproductive tract. When infection is found, cultures are performed to identify the organism and identify the best choice of antibiotic. An abdominal radiograph (X-ray) is performed to check for a retained fetus. Ultrasonography is often performed to look for retained fetus or placenta, and will visualize any retained fluid within the uterus.

How is metritis treated?

Treatment will depend upon your pet's condition. Severely ill patients may need hospitalization for intravenous fluids and antibiotics. Patients with a damaged uterus may require an ovariohysterectomy (spay). For more stable patients, antibiotics are given, and injections of prostaglandins (they help empty out the infected uterus) are administered.

What is the prognosis for animals with metritis?

The prognosis for metritis patients that are spayed is very good. The prognosis for patients with uncomplicated metritis (no retained fetus or placenta) that are treated medically is fair, but the ability to produce future litters may be decreased.




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