INTRODUCTION Deep vein thrombosis (DVT) continues to be a significant source of morbidity for surgical patients. Placement of a retrievable inferior vena cava (IVC) filter is used when patients have contraindications to anticoagulation or recurrent pulmonary embolism despite therapeutic anticoagulation. Although retrievable IVC filters are often used, they carry a unique set of risks. PRESENT...

Even without feedback, test practice enhances delayed performance compared to study practice. However, students often cram by studying just before an exam rather than testing themselves. Cramming appears irrational, but this may depend on whether items are initially retrievable. In this study, an initial test determined item retrievability. Retrievable or non-retrievable items were subsequently...

In this paper, we will introduce the notion of conjugate phase retrieval, which is a relaxed definition of phase retrieval allowing recovery of signals up to conjugacy as well as a global phase factor. It is known that frames of real vectors are never phase retrievable on C in the ordinary sense, but we show that they can be conjugate phase retrievable in complex vector spaces. We continue to d...

Designing efficient, economical heterogeneous catalysts for the Knoevenagel condensation reaction is highly significant owing to importance of products in industries as well pharmaceutics. Herein, we have designed and synthesized biguanidine-functionalized basic magnetically retrievable cobalt ferrite nanoparticles (CFNPs) synthesis using benzaldehydes active methylene compounds (malononitrile/...

Inferior vena cava (IVC) filters are used as an alternative to anticoagulants for prevention of fatal pulmonary embolism (PE) in venous thromboembolic disorders. Retrievable IVC filters have become an increasingly attractive option due to the long-term risks of permanent filter placement. These devices are shown to be technically feasible in insertion and retrieval percutaneously while providin...

I have read with great attention the article written by Chaloupka et al (1) in the August 1996 issue of AJNR. They treated two patients with nonretrievable coils. Although they did not have any complication, I wonder whether it is reasonable to offer a treatment that bears substantial risk of having one coil migrate into the parent vessel without the option of retrieving the coil, or only with ...

Biliary stent placement is an adjunct for complex biliary intervention. Patients with benign biliary strictures or aversion to external drainage may benefit from placement of retrievable biliary stents. This report describes a patient with a working diagnosis of benign biliary stricture who underwent interventional radiology-operated endoscopy-guided transnasal placement of a fully covered retr...