The EKG Concepts Pocket R-CAT (Rapid Cardiac Arrhythmia Tool) for Arrhythmias has been designed to aid healthcare practitioners in the rapid interpretation of EKG rhythms. It is a 3 ¼" x 6 ¾" double-sided laminated tool which folds out to display 41 six-second EKG rhythm strips. The R-CAT can be marked with a black dry erase marker and wiped clean for repeated use. The R-CAT also contains reference lines or measuring tools for heart rate and time in seconds. Side-by-side comparison of actual patient's EKGs can be measured using the R-CAT.