OBJECTIVES The purpose of the study was to describe the configuration, and investigate the mechanisms, of QRS changes occurring during percutaneous transluminal coronary angioplasty (PTCA). BACKGROUND QRS changes during PTCA have been attributed to both a passive ST segment shift and conduction disturbances (peri-ischemic block). The direct relation between ST segment shift and QRS changes, h...

UNLABELLED BACKGROUND, AIMS OF THE STUDY: The objective of the study was to relate the progress of coronary artery remodeling to the earliest stages of the atherosclerotic process. For this purpose, a mathematical model for description of dimensional change of the coronary artery wall and its constituent components was developed and applied. MATERIALS AND METHODS The study used coronary arter...

Even though design of a widening operator is an integral step in the design of an abstract interpreter using an infinite domain, not much work has been done to systematize the design of widening operator. While there exist works that derive widening of higher-level domains by lifting the widening of the base-level domain, the design of widening for baselevel domains remains largely creative pro...