patent foramen ovale

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patent foramen ovale

PFO Cardiology An opening between the left and right atria which allows blood to bypass the lungs in utero; the FO normally closes shortly after birth, but remains open in up to 20%; a PFO is, in absence of other cardiac defects, is of no consequence

pa·tent for·a·men ova·le

(pa'tĕnt fōr-ā'mĕn ō-vā'lē)
Valvular incompetence of the patent foramen ovale of the heart; a condition contrasting with probe patency of the foramen ovale in that the valve of the foramen ovale has abnormal perforations in it, or is of insufficient size to afford adequate valvular action at the foramen ovale prenatally, or effect a complete closure postnatally.

patent foramen ovale

Persistence of the normal fetal opening in the internal wall of the heart (the FORAMEN OVALE) after birth.


1. open, unobstructed, or not closed.
2. apparent, evident.

patent ductus arteriosus (PDA)
abnormal persistence of an open lumen in the ductus arteriosus, between the aorta and the pulmonary artery, after birth. The ductus arteriosus is open during prenatal life, allowing most of the blood of the fetus to bypass the lungs, but normally this channel closes shortly before birth. When the ductus arteriosus remains open, it places special burdens on the left ventricle and causes a diminished blood flow in the aorta. May remain open for up to 5 days in foals. One of the most common congenital heart defects in dogs, but less common in cats. Causes a continuous 'machinery' murmur loud in systole, soft in diastole, and 'bounding' pulse.
patent ductus venosus
see ductus venosus.
patent foramen ovale
see foramen ovale (1).
patent medicine
a drug or remedy protected by a trademark, available without a prescription.
patent period
the period during a disease in which the causative agent can be detected by clinicopathological tests, e.g. for helminth eggs.
patent urachus
the urachus persists after birth and allows urine to drip out of the bladder through the umbilicus. See also urachus.
patent ventricular septum
includes several entities characterized by incomplete closure of ventricular wall. Characterized by palpable cardiac thrill and audible pansystolic murmur on both sides of the chest at birth, accompanied by exercise intolerance and developing dyspnea at rest.
References in periodicals archive ?
2 and inverted duplication and deletion in 10q26 in a patient with stroke associated with antithrombin defciency and a patent foramen ovale.
Closure of patent foramen ovale versus medical therapy after cryptogenic stroke.
Only Patent Foramen Ovale ie; Atrioseptal defect was observed otherwise rest of the heart was found to be normal.
Catheters that are advanced farther have the potential for perforating the right atrium, entering the right ventricle and causing ventricular tachycardia, or crossing a patent foramen ovale and becoming a source for systemic emboli.
Atrial septal aneurysm and patent foramen ovale as risk factors for cryptogenic stroke in patients less than 55 years of age.
The thinking was that if you had an unexplained stroke and you were older with a patent foramen ovale, it's more likely that it [PFO] was an innocent bystander," Dr.
Researchers believe patent foramen ovale (PFO) - a cardiac defect which allows blood to pass from the right to the left sides of the heart without going via the lungs - increases migraines.
The defect, called a patent foramen ovale (PFO), often produces no symptoms.
The new study, conducted by researchers in France, reportedly found that all passengers who had pulmonary embolism and then developed a stroke after a long-haul flight had a patent foramen ovale - an opening between two chambers in the heart that is present in about 30% of the general population.