A tire dressing composition comprises a silicone emulsion system which polishes and protects tires, while at the same time imparting water repellency to the subject tires. A healthcare professional may visually identify an arrhythmia, record the occurrence of the arrhythmia in a specific patient file, communicate information to other healthcare professionals and view treatment protocols in a matter of seconds. The scanning assembly scans the laser beam through multiple scan lines to fully discharge each segment of each dot.