For patients who have experienced a PFO-associated stroke, clinical trials have shown that they can benefit from PFO closure.1-3 This minimally-invasive procedure significantly reduces the risk of recurrent ischemic stroke and offers an excellent safety profile.
THE LANDMARK RESPECT TRIAL1
Still the definitive clinical trial on PFO closure
The RESPECT Trial - which studied the Amplatzer™ PFO Occluder - is the largest trial ever conducted on PFO closure.
It stands apart from other PFO closure studies since it's the largest clinical trial with the most extensive follow-up, spanning 13 years. The 980 enrolled patients were followed for a median of 5.9 years. Researchers ultimately collected 5,810 patient-years of data—almost 2 times more than other PFO trials.
The trial was conducted at 69 centers across the U.S. and Canada and included patients on anticoagulation therapy – a real-world cross-section of patients – unlike other PFO trials, REDUCE2 and CLOSE3.
The RESPECT trial offers conclusive evidence that using the Amplatzer PFO Occluder to close the PFO in patients with a PFO-associated stroke is more beneficial than medical therapy alone, reducing the risk of another stroke.
A meta-analysis on three randomized controlled trials on PFO closure confirmed that "PFO closure was superior to medical therapy for secondary prevention of stroke with a more robust benefit when the Amplatzer™ PFO Occluder was used.”4
Summary of Findings
Excellent Procedural Results
The RESPECT trial data reveal high rates of technical and procedural success and excellent closure with the study’s highly stringent criteria. At only 6 months, most patients also demonstrated freedom from shunt — both at rest and during Valsalva.1
(N ≤ 9 BUBBLES)
Note: Rates are calculated based on data in final publication.
*Successful delivery and release of the device at the time of first procedure for subjects in whom a study device was attempted.
†Successful implant at the time of the first procedure with no reported in-hospital serious adverse events.
- Significantly lower risk of recurrent stroke
The RESPECT trial revealed a 62% relative risk reduction for recurrent cryptogenic ischemic stroke with the Amplatzer™ PFO Occluder vs medical therapy.1
The trial showed there was a 45% relative risk reduction for any recurrent ischemic stroke over nearly 6 years of follow-up, compared to medical therapy.1
- Low Rates of Atrial Fibrillation
The RESPECT trial also revealed low rates of serious atrial fibrillation (AF) with the Amplatzer™ device, consistent with medical therapy.1 AF rates were somewhat higher in the REDUCE trial,2 which used a different PFO closure device.
(PER 100 PATIENT YEARS)
RESPECT6 REDUCE2 Serious AF /Flutter* 0.22 0.65 Any AF/Flutter 0.76 1.90
*In RESPECT, serious AF/Flutter was adjudicated by an independent board of physicians. In REDUCE, it was determined by the local investigator.
MAT-2202031 v1.0 | Item approved for Global OUS use only.