Preterm Premature Rupture Of Membranes
Preterm premature rupture of membranes (PPROM) is when the amniotic sac breaks before 37 weeks of gestation and labor has not started within 1 hour. The sac contains amniotic fluid and the developing baby. In PPROM, the amniotic fluid inside the sac leaks or gushes out of the vagina. This is also known as your water breaking.
Fetus with Amniotic Sac
PPROM increases the risks of certain pregnancy complications, including:
- Preterm delivery—baby is born prematurely and is not fully developed
- Placental abruption—placenta separates from the uterus before the baby is delivered
- Prolapsed umbilical cord—umbilical cord is squeezed between the baby and the pelvis
- Infection in the uterus or baby
Call your doctor right away if you suspect that your water has broken.
PROM is caused by weakening and/or thinning of the opening of the membrane.
The following factors may increase your chance of PPROM:
- PPROM in earlier pregnancies
- Infection in the amniotic sac
- Other infections in mother (chlamydia, bacterial vaginosis)
- Preterm labor
- Bleeding during the second and third trimester
- Certain procedures used to treat abnormal conditions of the cervix (such as cervical conization)
- Lung disease during pregnancy
- Connective tissue disease
- Nutritional deficits
- Low body mass index
- Low socio-economic status
- Smoking during pregnancy
The main symptom of PPROM is fluid leaking from the vagina. You may experience a sudden gush of fluid or a slow, constant trickle. It can be difficult to distinguish between a slow amniotic trickle and urine. Your doctor can do simple tests to determine this.
PPROM also increases the risk of infection. Symptoms include a fever above 100.4 degrees Fahrenheit (38 degrees Celsius). If you have any of these symptoms, call your doctor right away.
To diagnose PPROM, the doctor may do the following tests:
- Visual exam—the doctor may be able to see a trickle of fluid through the cervix, or a pool of fluid collected behind the cervix
- A nitrazine paper test—the doctor puts a small amount of fluid on a piece of paper to see if it is amniotic fluid
- Look at the fluid under a microscope to see if it is amniotic fluid
- Ultrasound—using sound waves, the doctor examines the baby and amniotic sac to see if there is plenty of fluid and the baby is doing well
The doctor will also check you for fever and other signs of infection. He will monitor your baby for any signs of distress.
Treatment of PPROM depends on when it occurs in the pregnancy. There are other considerations as well which your doctor will discuss with you.
34 weeks or longer of gestation
The doctor will:
- Monitor the baby’s heart rate
- Induce labor by giving you medicines
- Possibly give antibiotics
32-33 weeks of gestation
The doctor may:
- Induce labor if your baby’s lungs have matured enough
- Give antibiotics
- Possibly give steroids to help your baby's lungs develop faster
- Try to delay delivery until completion of 33 weeks gestation
24-31 weeks of gestation
The doctor will provide treatment with antibiotics and steroids. The doctor may attempt to delay delivery until completion of 33 weeks gestation.
Researchers are investigating ways to prevent PPROM. Taking preventive antibiotics during the second and third trimester may reduce your risk. You can also take steps for a healthier pregnancy, like quitting smoking.
American Pregnancy Association
National Institute of Child Health and Development
About Kids Health
The Society of Obstetricians and Gynaecologists of Canada
The American College of Obstetricians and Gynecologists. Premature Rupture of Membranes, Practice Bulletin No. 80. April 2007.
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Pregnancy Info.net. Premature rupture of membranes: causes, risks, and treatment. Pregnancy Info.net website. Available at: http://www.pregnancy-info.net/prom.html. Accessed June 1, 2010.
Premature Rupture of Membranes, Practice Bulletin No. 80, April 2007, The American College of Obstetricians and Gynecologists.
Last reviewed June 2014 by Michael Woods, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.