Forty patients were catheterized for closure of atrial septal defects with the Rashkind patent ductus arteriosus umbrella device, a modified Rashkind umbrella device, and the newly designed Lock Clamshell Occluder. Patients weighed 8 kg or more (a requirement for transvenous access with the 11F delivery sheath) and had defects suitable for closure based on two-dimensional echocardiography. The ...

Abstract—This contribution deals with the blocking probability in a hierarchical network with two mobility behaviors. A continuous coverage is achieved with micro-cells that accommodate both fresh calls and handover requests. Over this micro-cell coverage umbrella-cells, which only accept handover, are implemented. At every handover, the sojourn time of the terminal in the cell is measured. If ...

introduction: perforations of the pulpal floor create problems during endodontic treatment and often results in secondary periodontal involvement with eventual loss of teeth. the purpose of this study was to evaluate the ability of mineral trioxide aggregate (mta), amalgam, zinc oxide and eugenol (zoe) and portland cement to seal furcal perforations in extracted human molars using dye penetrati...

in this case report, we described a 74-year-old female patient with major complaint of respiratory problemsdyspnea after meal. chest x-ray of the patient revealed a  gianttype iv hiatal hernia. preoperative evaluations of the patient included esophagoscopy, esophageal manometry, barium swallow, and ct-scan. repair of the hernia was performed using a dual mesh on the diaphragm and partial anteri...

he studies on membrane dynamics in urinary bladder umbrella cells were focused on proteins as important factors for maintaining the permeability barrier and their role as pathways modulators for the discoidal/fusiform endocytic vesicles which is one of the main features of the umbrella cells. However, our workgroup has dedicated to the study of lipid membrane composition and its biological impa...

Background and Objective: This umbrella review presents comprehensive data on the evidence of the association between cerebral venous thrombosis (CVT) and COVID-19 vaccinations. Methods: We searched related databases to access issue-related systematic reviews both with meta‐analyses or without it that studied the connotation between COVID 19 vaccination and CVT in any languages from initiatio...

Dementia is a growing concern worldwide. In Scotland alone 1.32% of the population have dementia and about 40% of these people live in a care home or hospital (Care Commission and Mental Welfare Commission, 2009). Dementia is an umbrella term for a persistent impairment in multiple areas of intellectual function including attention, orientation, memory, judgment, language, motor and spatial ski...

Several types of learning environments have been classified under the umbrella term of CSCL (ComputerSupported Collaborative Learning). Literature has acknowledged the importance facilitators have in CSCL environments. Nevertheless these environments still lack support to the activities carried out by facilitators during learning activities. In this work we address the needs of supporting the f...