Included in this 6 card badge set: An EKG Ruler that can measure R wave for heart rate, low range and high range measurements for PR interval, QRS complex, and QT interval with accompanying information chart. 2 EKG findings cards that focus on specific sections of the EKG readout (P/PR, QRS/QTc, ST, T), which will help diagnose EKG irregularities. 2 EKG interpretation cards with common cardiac arrhythmias and the characteristics of each rhythm. 1 card displaying 12 Lead STEMI layout with electrode placement reference. This ECG badge set is perfect for professionals that read electrocardiograms regularly. The electrocardiogram reference card set will fit on any standard sized badge holder or badge reel. This badge card set makes a great gift for nurses, EMTs, EKG Techs, and other healthcare professionals. The EKG badge set is a perfect tool for that hard to remember specific information needed when measuring ECG. Don't get caught unprepared - have this badge card set ready at your fingertips!