Decrease (-) Restore Default Increase (+)
Bookmark and Share

Health Library

Multimedia Health Encyclopedia - Diseases

Search Health Information   
 

Miscarriage - threatened

Definition

A threatened miscarriage is a condition that suggests a miscarriage might take place before the 20th week of pregnancy.

Alternative Names

Threatened miscarriage; Threatened spontaneous abortion; Abortion - threatened; Threatened abortion

Causes, incidence, and risk factors

Some pregnant women have some vaginal bleeding, with or without abdominal cramps, during the first three months of pregnancy. When the symptoms indicate a miscarriage is possible, the condition is called a "threatened abortion." (This refers to a naturally occurring event, not medical abortions or surgical abortions.)

Miscarriage occurs in about half of pregnancies that have first trimester bleeding.

Symptoms

Symptoms of a threatened miscarriage include:

  • Abdominal cramps with or without vaginal bleeding
  • Vaginal bleeding during the first 20 weeks of pregnancy (last menstrual period was less than 20 weeks ago)

Note: During an actual miscarriage, low back pain or abdominal pain (dull to sharp, constant to intermittent) can occur. Tissue or clot-like material may pass from the vagina.

Signs and tests

Abdominal or vaginal ultrasound may be done to check the baby's development, heart beat, and amount of bleeding. A pelvic exam will be done to check the cervix.

The following blood tests may be performed:

Treatment

You may be told to avoid or restrict some forms of activity. Not having sexual intercourse is usually recommended until the warning signs have disappeared.

The use of progesterone is controversial. It might relax smooth muscles, including the muscles of the uterus. However, it also might increase the risk of an incomplete abortion or an abnormal pregnancy. Unless there is a luteal phase defect, progesterone should not be used. Your doctor can tell you more about this.

Expectations (prognosis)

Many women with threatened miscarriage go on to have a normal pregnancy.

Complications

  • Anemia
  • Infection
  • Miscarriage
  • Moderate-to-heavy blood loss

Calling your health care provider

If you know you are (or are likely to be) pregnant and you have any symptoms of threatened miscarriage, contact your prenatal health care provider right away.

Prevention

Women who get prenatal care have better pregnancy outcomes for themselves and their babies. Miscarriages are less likely when you receive early prenatal care. And a healthy pregnancy is more likely when you avoid things that are hamful to your pregnancy such as x-rays, recreational drugs, alcohol, high caffeine intake, and infectious diseases.

It is better to treat health problems before you get pregnant than to wait until you are already pregnant. Miscarriages that are caused by body-wide (systemic) diseases can be prevented by detecting and treating the disease before becoming pregnant. Being obese or having uncontrolled diabetes can increase your risk of miscarriage.

References

Katz VL. Spontaneous and recurrent abortion: etiology, diagnosis, treatment. In: Katz VL, Lentz GM, Lobo RA, Gershenson DM, eds. Comprehensive Gynecology. 6th ed. Philadelphia, PA: Elsevier Mosby; 2012:chap 16.

American College of Obstetricians and Gynecologists. ACOG Committee opinion no. 462: Moderate caffeine consumption during pregnancy. Obstet Gynecol. 2010 Aug;116(2 Pt 1):467-8.

Cunnigham FG, Leveno KL, Bloom SL, et al. Abortion. In: Cunnigham FG, Leveno KL, Bloom SL, et al, eds. Williams Obstetrics. 23rd ed. New York, NY: McGraw-Hill; 2010:chap 9.


Review Date: 11/8/2012
Reviewed By: Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Bellevue, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
adam.com
 

Medical Care

Cancer
Pregnancy & Prenatal Classes
Weight Loss
Orthopedics
Heart Disease
Neurology
Women's Health
More Medical Care

Locations

Hospitals
Immediate Care
Health Centers
Emergency Room
Doctors Offices
Specialists
Affiliate Hospitals

Patients and Visitors

MyChart
Pay Your Bill
Request an Appointment
Get Healthy
Support Groups
Fitness Groups
Mobile Applications
Clinical Trials
Online Nursery
Classes and Events
Send an eCard
Patient Stories
Places to Stay

About Us

Quality Report 
Careers
Ways to Help
Community Outreach
Contact Us
(502) 629-1234

Connect with us

© 2014 Norton Healthcare
Serving Kentucky and Southern Indiana