Subject(s)
Atrial Fibrillation/etiology , Brain Neoplasms/therapy , Glioblastoma/therapy , Adrenergic beta-Antagonists/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Atrial Fibrillation/drug therapy , Bisoprolol/therapeutic use , Combined Modality Therapy/adverse effects , Humans , Male , Middle Aged , Radiotherapy/adverse effects , SyndromeSubject(s)
Coronary Circulation , Coronary Vessel Anomalies/physiopathology , Neoplasms, Unknown Primary/physiopathology , Neuroendocrine Tumors/physiopathology , Neuroendocrine Tumors/secondary , Vascular Fistula/physiopathology , Aged , Coronary Angiography , Coronary Vessel Anomalies/diagnostic imaging , Female , Heart Ventricles/physiopathology , Humans , Liver Neoplasms/physiopathology , Liver Neoplasms/secondaryABSTRACT
The placement of angiographic catheters into the vascular system is a routine procedure in modern clinical business. The definition of objective but not yet available evaluation protocols based on measurable physical quantities correlated to the empirical clinical findings is of utmost importance for catheter manufacturers for in-house product screening and optimization. In this context, we present an assessment of multiple mechanical and surface catheter properties such as static and kinetic friction, bending stiffness, microscopic surface topology, surface roughness, surface free energy and their interrelation. Theoretical framework, description of experimental methods and extensive data measured on several different catheters are provided and in conclusion a testing procedure is defined. Although this procedure is based on the measurement of several physical quantities it can be easily implemented by commercial laboratories testing catheters as it is based on relatively low-cost standard methods.