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Clinical Trial Summary

The primary objective is to evaluate if patent foramen ovale (PFO) closure and antiplatelet medical management can reduce the risk of recurrent stroke or transient ischemic attack (TIA) when compared to antiplatelet medical management alone in elderly patients above 50 years of age with a PFO and a history of cryptogenic stroke or TIA.


Clinical Trial Description

Prior to birth the fetal heart has a connection between the two atrias of the heart. After labour this connection often closes. About 10-15 % these connections remains open. This phenomenon is called patent foramen ovale or PFO, and is in most cases unsymptomatic.

The prevalence of PFO in patients with crytogenic (without known causes) stroke is much higher (about 40%)than the general population (about 10%). This has led to the theory that the presence of PFO can lead to stroke, by the passage of emboli from the peripheral venous circulation through the PFO to the brain by right-to-left shunting of the blood.

There are no existing data from prospective randomized studies focusing on the effect of device closure PFO in patients with cryptogenic stroke. Some observational retrospective studies have shown a beneficial effect in the reduction of recurrent stoke in patients younger that 50 years with cryptogenic stroke when PFO has been closed with a percutaneous device closure(PCD). Some studies have reported an 0% to 3.4% annual recurrence rate of stroke or TIA in patients treated with PDC. The recurrence rate of stroke or TIA in patients with crytogenic stroke or TIA in ordinary antithrombotic treatment is about 5-15 %.

The primary objective of this study is to assess whether percutaneous device closure of patent foramen ovale is superior to conventional antithrombotic treatment in preventing stroke recurrence in elderly patients above 50 years of age. ;


Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Prevention


Related Conditions & MeSH terms


NCT number NCT01018355
Study type Interventional
Source Hillerod Hospital, Denmark
Contact
Status Terminated
Phase N/A
Start date October 2009
Completion date June 2015

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