title: The significance of patent foramen ovale: a current review of associated conditions and treatment.
abstract: Patent foramen ovale (PFO) is a remnant of the foetal circulation, found in about a quarter of the population. PFO is an asymptomatic condition and the high prevalence infers that it is in most cases of no or only limited clinical significance. However, recent research has found an increased prevalence of PFO in cryptogenic stroke, decompression illness and migraine. The presence of a PFO has also been associated with oxygen desaturation in conditions such as obstructive pulmonary disease and obstructive sleep apnoea. The rapid evolution and widespread availability of catheter-based closing techniques have further stimulated interest. The seemingly growing significance of PFO will be discussed in this review.
authors.affiliation: Department of Emergency and Cardiovascular Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden. Magnus.C.Johansson@vgregion.se
authors.forename: Magnus C
authors.initials: MC
authors.lastname: Johansson
authors.forename: Peter
authors.initials: P
authors.lastname: Eriksson
authors.forename: Mikael
authors.initials: M
authors.lastname: Dellborg
mesh_terms: D054092:Foramen Ovale, Patent / Q000453:epidemiology / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D008881:Migraine Disorders / Q000453:epidemiology*; D015995:Prevalence; D012891:Sleep Apnea Syndromes / Q000453:epidemiology*; D020521:Stroke / Q000453:epidemiology*