|
Patent foramen ovale |
| Definition: |
|
Fetuses have a normal opening between the left and right atria (upper chambers) of the heart. If this opening fails to close naturally soon after the baby is born, the condition is called patent foramen ovale (PFO). |
| Alternative Names: |
| PFO |
| Causes, incidence, and risk factors: |
|
PFO is the persistence of a fetal opening between the left and right atria (upper chambers) of the heart. This hole allows blood to bypass the lungs, because they are not used until a baby is born. The foramen ovale normally closes soon after the infant is born. The foramen ovale may remain open in as many as 1 out of 5 people. The cause is unknown and there are no known risk factors for developing a PFO. |
| Symptoms: |
| Infants with a patent foramen ovale and no other heart defects do not have symptoms. |
| Signs and tests: |
| The only sign (which occurs only rarely) of a PFO is intermittent bluish discoloration of the baby's skin (cyanosis). This usually occurs during crying or straining to pass stool. |
| Treatment: |
| This condition is not treated unless other heart abnormalities exist. |
| Expectations (prognosis): |
| The infant will have normal health in the absence of other heart defects. |
| Complications: |
|
Unless there are other associated defects, there are usually no complications associated with PFO. There have been some studies suggesting that older patients with PFOs have a higher rate of a certain type of stroke (thromboembolic). The reason for this is that older people frequently develop blood clots in the veins in their legs. These clots can sometimes travel from their original site to the right side of their heart. If PFO is present, the clot can then pass from the right side to the left side from whence it can travel to the brain and become lodged there, preventing blood flow to that part of the brain (stroke). |
| Calling your health care provider: |
| Call your health care provider if your baby turns blue when crying or defecating. Usually, however, this disorder is only discovered incidentally when a cardiologist performs an echocardiogram (ultrasound of the heart) to evaluate an unrelated heart murmur. |
Reviewed By: Satish K. Rajagopal, M.D., Department of Pediatrics, Columbia Presbyterian Medical Center, The Children's Hospital of New York, New York, NY. Review provided by VeriMed Healthcare Network.
 |
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is the first of its kind, requiring compliance with 53 standards of quality and accountability, verified by independent audit. A.D.A.M. is among the first to achieve this important distinction for online health information and services. A.D.A.M. is also a founding member of Hi-Ethics (www.hiethics.com) and subscribes to the principles of the Health on the Net Foundation (www.hon.ch). |
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician 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. Copyright 2003 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
