NCT04846205

Relationship Between Sleep Apnea Syndrome and Patent Foramen Ovale Among Victims of Cryptogenic Ischemic Stroke

Assessment of the Relationship Between Sleep Apnea Syndrome and Patent Foramen Ovale Among Young Subjects Victims of Cryptogenic Ischemic Stroke

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 159 (actual)
• Sponsor: Centre Hospitalier Universitaire de Saint Etienne · Academic / Other
• Sex: All
• Age: 18 Years – 60 Years
• Healthy volunteers: Not accepted

Summary

Obstructive sleep apnea syndrome (OSAS) and patent foramen ovale (FOP) are considered as risk factors for stroke. OSAS generates a pressure increase in the right cavity during inspiratory efforts, which increases the number of right-left shunt embolus and therefore the risk of stroke. OSA and FOP are often thought as two separate entities, however, due to their high frequencies, they sometimes coexist and can influence the pathophysiology of each other. More researches are needed in this area to confirm this complex association and its role in triggering stroke.

Detailed description

Obstructive sleep apnea syndrome (OSAS) and patent foramen ovale (PFO) are considered as risk factors for stroke. In most cases, the presence of FOP has no clinical impact. Certain hemodynamic conditions inducing a right-left pressure gradient can promote the reopening of a FOP and allow the passage of blood, presenting micro or macro-thrombi, from the venous system to the arterial system, explaining the mechanism of paradoxical embolism. OSAS generates a pressure increase in the right cavity during inspiratory efforts, which increases the number of right-left shunt embolus and therefore the risk of stroke. OSA and FOP are often thought as two separate entities, however, due to their high frequencies, they sometimes coexist and can influence the pathophysiology of each other. Evidence of a clinically significant interaction and causation in the genesis of stroke remains limited. More researches are needed in this area to confirm this complex association and its role in triggering stroke.

Conditions

• Apnea Syndrome
• Stroke

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	systematic etiological	Theses following tests are made as usual practice : * Ventilator polygraphy, or polysomnography between 1 month and 1 year after cryptogenic ischemic stroke. * Transoesophageal ultrasound

Timeline

• Start date: 2021-03-24
• Primary completion: 2021-09-30
• Completion: 2021-09-30
• First posted: 2021-04-15
• Last updated: 2024-06-21

Locations

1 site across 1 country: France