This work investigates the effect of different conditions of PFO thermal cracking from two PFO samples on liquid, solid and gas product yield and asphaltene removal efficiency in a new designed experimental setup. No need to use a catalyst, simple operating system and experiment conditions, the ability to use water as a cheap carrier gas and high asphaltene extraction efficiency without the use...

Background: One of the important etiologies for cryptogenic stroke is paradoxical embolization secondary to Patent Foramen Ovale (PFO). Foramen ovale can secondarily reopen due to Pulmonary Arterial Hypertension (PAH) which is common among the older age. PAH is known as a frequent and life threatening complication of COPD. The aim of this study was to determine the prevalence of PFO between COP...

background: percutaneous transcatheter closure has been proposed as an alternative to surgical closure or long-term anticoagulation in patients with presumed paradoxical embolism and patent foramen ovale (pfo). methods: there were two symptomatic patients (29 and 47 years old) who underwent percutaneous transcatheter closure of pfo after at least two events of cerebral ischemia; one embolic eve...

Although the prevalence of a patent foramen ovale (PFO) in the general population is ≈25%, it is approximately doubled among cryptogenic stroke (CS) patients. This has generally been attributed to paradoxical embolism, and many physicians recommend PFO closure to prevent recurrence. However, the benefit of PFO closure in patients with stroke has not been demonstrated. Furthermore, the epidemiol...

OBJECTIVES This study sought to investigate the safety and efficacy of transcatheter treatment of atrial septal aneurysm (ASA) associated with patent foramen ovale (PFO). BACKGROUND Patients with both ASA and PFO are at high risk for recurrent paradoxical embolism. METHODS The procedural, echocardiographic, and clinical outcomes of 141 patients with ASA + PFO and > or =1 paradoxical embolic...

The surgical management of Knee Osteoarthritis (KOA), so far, mainly revolved around arthroscopic procedures,arthroplasty (total: TKA and unicompartmental: UKA) or high tibial osteotomy (HTO). Recently, another minimallyinvasive surgical treatment of proximal fibular osteotomy (PFO) has been proposed for the management of KOA. ThePFO has been found to be useful in the manageme...

BACKGROUND To evaluate the incidence, frequency, and contributing factors of microembolic signals (MESs) in patients with cryptogenic stroke with or without patent foramen ovale (PFO). METHODS Transcranial Doppler monitoring for MESs detection was performed for 62 patients with acute cryptogenic stroke with PFO (PFO(+)) and 34 patients with acute cryptogenic stroke without PFO (PFO(-)). RES...

The prevalence of a patent foramen ovale (PFO) is ~30%, and this source of right-to-left shunt could result in greater pulmonary gas exchange impairment at rest and during exercise. The aim of this work was to determine if individuals with an asymptomatic PFO (PFO+) have greater pulmonary gas exchange inefficiency at rest and during exercise than subjects without a PFO (PFO-). Separated by 1 h ...

BACKGROUND A causal relationship between patent foramen ovale (PFO) and migraine has been hypothesized, and improvement of migraine frequency and severity after percutaneous PFO closure has been reported. Population-based data on the relationship between PFO and migraine are sparse, however. The objective of this study was to examine the association between PFO and migraine among stroke-free in...