Active clinical trials for "Foramen Ovale, Patent"

This study will involve patients who are planned to have hip or knee replacement surgeries. They will undergo a Transthoracic Echocardiogram study (an ultrasound of the heart) to look for a Patent Foramen Ovale (PFO). A PFO is a hole in the heart that everyone is born with and in most cases eventually closes by adulthood. However, it does not always close in all people. The investigators will compare the participants as two groups - those with a PFO, and those without, and look for differences in delirium in their postoperative stay. This will help us look for an association between postoperative delirium and the presence of a PFO.

Background and hypothesis: The appropriate treatment strategy for secondary stroke prevention in patients with cryptogenic stroke and patent foramen ovale (PFO) remains challenging. Clinical and anatomical variables reported to be risk factors associated with stroke recurrence include older age, large PFO, large right-to-left shunting, and combined atrial septal aneurysm (ASA), which, however, were not confirmed by other studies. The investigators hypothesized that percutaneous closure of PFO could be an effective option for secondary prevention in cryptogenic stroke patients with high-risk PFO. Trial Objective: The primary objective of this study is to assess whether percutaneous device closure of PFO is superior to conventional antithrombotic treatment in preventing stroke recurrence in the cryptogenic stroke patients with high-risk PFO.

The purpose of this study is to compare two treatments strategies to prevent further attacks in patients who have suffered an stroke or occlusion of a major artery with no obvious reason other than a persistent small opening between the upper heart chambers

The investigators hypothesis is that an injection into the inferior vena cava associated with a provocation maneuver should allow to increase the incidence of FOP found by transesophageal echocardiography in a population of patients undergoing lung transplantation.

This study will be the first to provide data about the relationship between PFO and migraine in children. By establishing the actual prevalence, we will better understand if PFO plays a role in the occurence of pediatric migraine and, thus, provide the incentive to perform additional studies evaluating whether PFO closure is an effective treatment option for pediatric migraine. For children with migraine headaches, discovering novel and effective treatments would be life altering.

The aim of this study is to determine whether catheter-based closure of patent foramen ovale is effective in preventing paradoxical embolization of nitrogen bubbles after simulated dives.

The investigator retrospectively analyzed consecutive young (<60 years) cryptogenic stroke patients with Patient Foramen Ovale (PFO) recruited between January 2016 and May 2019 in our center, and compared these patients with sex- and age-matched controls with cryptogenic stroke without PFO. Analyzed baseline characteristics: sex, age, cardiovascular risk factors, history of stroke, and cortical/subcortical localization, arterial territory, number of lesions, and lesion size of the acute symptomatic infarction, together with the ROPE score. The presence and the number of acute and chronic SCCI lesions were assessed.

Pulmonary embolism is associated with a small but definite risk of paradoxical embolism in patients with a patent foramen ovale (PFO). While neurologic complications are unfrequent the incidence of clinically silent brain infarction is unknown. We will assess the rate of clinically apparent and silent cerebral embolism in patients with a pulmonary embolism (PE) in relation to the presence or not of a PFO.

Describe the baseline and procedural characteristics of older patients undergoing PFO closure due to cryptogenic embolism. Assess the long-term follow-up of this cohort, focusing on neurological events and their origin, major cardiac outcomes, as well as survival rates and death origin. Seek for predictors of neurological event recurrence after the procedure.

The aim of the study is to compare correlation for right to left shunts (mainly patent foramen ovale) detection for three methods-transesophageal echo as a gold standard, transcranial doppler with contrast agent (microbubbles) and new method- Flow detection system ( Cardiox TM) in young stoke patients ( age under 55 years).