View clinical trials related to PFO - Patent Foramen Ovale.
Filter by:Migraine is one of the most common chronic neurological disorders, posing a significant global public health concern. Patent Foramen Ovale (PFO) is the most common congenital heart anomaly in adults. Mechanisms linking PFO to migraine include cortical spreading depression, vascular active substance theory, impaired cerebral autoregulation, and genetic susceptibility. Understanding these mechanisms holds promise for overcoming challenges in the prevention and treatment of migraines in PFO patients. At least 11 observational studies, comprising 1,632 subjects, described the efficacy of PFO closure in cryptogenic stroke. Of these, 34% had migraines, and percutaneous PFO closure reportedly reduced migraine days by 81% (with a reduction of over 50% in monthly migraine days). Prospective randomized controlled trials (PRIMA and PREMIUM trials) assessing the Amplatzer® PFO Occluder showed significant benefits in most secondary endpoints, with a pooled analysis indicating its safety and effectiveness compared to medical therapy.While traditional metal PFO closure studies suggest symptom relief, reports also mention potential new-onset or worsened migraines post-closure. Proposed mechanisms include platelet activation, microthrombus formation, nickel allergy, and septal deformation or stretching inducing the release of migraine-related vascular active substances. However, these theories are closely tied to the presence of permanent metal implants. Addressing these concerns, the MemoSorb® biodegradable PFO Occluder system, approved by the National Medical Products Administration (NMPA) in September 2023, offers an innovative solution. Developed collaboratively by the National Biomedical Materials Engineering Technology Research Center, Professor Wang Yunbing's team, Professor Pan Xiangbin's team from Fuwai Hospital, Chinese Academy of Medical Sciences, and HeartTech Medical, this groundbreaking technology represents a shift from metal to degradable materials. The occluder serves as a temporary bridge post-implantation, gradually degrading with endothelialization, facilitating comprehensive self-repair. This intervention concept theoretically avoids the lifelong complications associated with traditional metal occluders, effectively reducing postoperative symptoms like migraines and dizziness. To assess and compare the treatment outcomes, especially in relieving migraines, a prospective, single-blind, randomized controlled study has been designed for patients with patent foramen ovale and migraine, comparing the novel biodegradable occluder with the metal occluder.
This is a multicenter prospective observational study aimed to asses whether a specific prothrombotic platelet phenotype can discern migraine patients with PFO (patent forame ovale) - related symptoms from patients with incidental PFO. The study will also explore additional distinguishing features of causal and incidental PFO using a metabolomics approach. It involves the enrollment of well-characterized patient cohorts and an ex vivo approach using comparative cell biology models that reproduce the most critical aspects of the clinical scenario.
Migraine attacks are episodic disorder that affects approximately 12% of the population, and studies have shown that 41-48% of migraineurs have a combination of patent foramen ovale (PFO). Clinical Observational studies have been linking PFO occlusion with the effectiveness in improving migraine symptoms and reducing the frequency of attacks. However, several RCTs have shown negative primary results, making it unclear whether PFO occlusion is effective in treating migraine. Our study is a multi-center cohort study aiming to find the correlation between PFO closure and migraine attacks.
The purpose of this post-marketing surveillance is to evaluate the effectiveness and safety of GORE® CARDIOFORM Septal Occluder under the post-marketing setting in Japan.
Effectivity and safety of PFO closure vs medicine in alleviating migraine （SPRING）: a multicenter, random, case control study
A single-arm, non-randomized, multi-center clinical study of the Amplatzer™ Trevisio™ Intravascular Delivery System for facilitating percutaneous, transcatheter implantation of the Amplatzer™ Occluder Devices. NOTE: The enrollment for the VSD cohort is still recruiting (3 subjects at this moment); therefore, the overall status of the study is Recruiting.
The purpose of the Amplatzer PFO Occluder post-marketing clinical use surveillance study is to observe the frequency, type and degree of adverse device effects and adverse events in order to assure the safety of the new medical device, and to collect safety and efficacy information for evaluating the results of the clinical use.
Multi-center, prospective, randomized, placebo- and sham-controlled study to evaluate the GORE® CARDIOFORM Septal Occluder for migraine headache relief
Percutaneous transcatheter closure of a patent foramen ovale (PFO) to reduce the risk of recurrent ischemic stroke in patients who have had a cryptogenic stroke due to a presumed paradoxical embolism.
This study will assess the safety and effectiveness of GORE® CARDIOFORM Septal Occluder in a post approval setting and evaluate the quality of operator education and training and transferability of trial experience to a post-market setting.