Endometritis

Anatomy or system affected: Reproductive system, uterus

Also known as: Endomyometritis

Definition

Endometritis is an irritation or inflammation of the endometrium, the inner lining of the uterus, that sometimes extends into the myometrium and parametrial tissues. Pathologically, endometritis is classified as acute or chronic. Acute endometritis is distinguished by the presence of neutrophils in the endometrial glands and chronic endometritis is characterized by variable numbers of plasma cells and lymphocytes within the endometrial stroma.

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Causes

Endometritis is a microbial infection that can be caused by normal vaginal bacteria and by chlamydia, gonorrhea, chronic pelvic inflammatory disease, or tuberculosis. In most cases, it is initiated by an ascending infection from organisms found in the normal vaginal flora. Infection may be produced by compromised abortions, complicated deliveries, miscarriages, medical exam instrumentation, and retention of placental fragments.

Risk Factors

The risk for endometritis increases after miscarriage or childbirth, particularly after a long labor or a cesarean section. Medical procedures that involve entering the uterus through the cervix such as hysteroscopy and placement of an intrauterine device increase the risk of developing endometritis. After vaginal delivery, incidence is between 1 and 3 percent, whereas for cesarean delivery, incidence ranges from 13 to 90 percent.

Symptoms

The most common symptoms associated with endometritis are lower abdominal pain, fever, and increased vaginal discharge or bleeding. There may be yellow, foul-smelling vaginal discharge. Discomfort with bowel movement and constipation may also occur. Menstruation can be excessive after acute endometritis, but the excessive bleeding can usually be resolved after two weeks of antibiotic treatment. Patients suffering from chronic endometritis may have an underlying cancer of the cervix or endometrium.

Screening and Diagnosis

Physical and pelvic exams will be performed by a health care provider. The lower abdomen, uterus, and cervix may be tender. Cervical discharge and decreased bowel sounds may be present. Cultures may be taken from the cervix to test for microbial infectious agents. Other tests performed often include an endometrial biopsy, laparoscopy, white blood count, and microscopic examination of any vaginal discharge.

Treatment and Therapy

Broad-spectrum antibiotics are used to treat and prevent complications of endometritis. Treatments sometimes involve plenty of rest and administering fluids through a vein. For complicated cases of endometritis, hospitalization may be necessary.

Prevention and Outcomes

The risk of endometritis can be reduced by employing careful, sterile techniques during the delivery of a baby, during an abortion, or during any gynecological procedures. Safer sex practices reduce the risk of endometritis caused by sexually transmitted infections.

Bibliography

Beers, Mark H., et al., eds. The Merck Manual of Diagnosis and Therapy. 18th ed. Whitehouse Station, N.J.: Merck Research Laboratories, 2006.

Berek, Jonathan S., ed. Berek and Novak’s Gynecology. 14th ed. Philadelphia: Lippincott Williams & Wilkins, 2007.

Dallenbach-Hellweg, Gisela, Dietmar Schmidt, and Friederike Dallenbach. Atlas of Endometrial Histopathology. 3d ed. New York: Springer, 2010.

Icon Health. Endometritis: A Medical Dictionary, Bibliography, and Annotated Research Guide to Internet References. San Diego, Calif.: Author, 2003.

Katz, V. I., et al., eds. Comprehensive Gynecology. 5th ed. Philadelphia: Mosby/Elsevier, 2007.

Wilson, Walter, and Merle Sande. Current Diagnosis and Treatment in Infectious Diseases. New York: McGraw-Hill Medical, 2001.