ECG 7 scale ECG/ECG assessment tool: transparent ID size card for easy interpretation of ECG. Perfect size, fit into the card holder, easy storage and access, specially designed with 7-step ECG interpretation method in mind. Anyone who performs an ECG/ECG can practice from a student to an experienced clinician. ECG/EKG 7 step evaluation tool. Go through the step-by-step process with reference points along the way, suitable for those difficult to remember key points! 1. Heart rate - This will provide a fast but approximate heart rate. 2. Rhythm - Assess whether your heart rate is normal or irregular 3. Axis - Quick reference of normal, left or right axis deviations. The up arrow indicates positive deflection, and the down arrow indicates negative deflection. 4. PR interval - This gives you a reference to the PRI range in milliseconds. On the right, there is also a block that measures PRI. 5. QRS interval - As mentioned above, the range of QRS & QTc is in milliseconds, you can also measure the QRS interval in blocks. 6. ST elevation/Dip - Place the straight topline along the iso-wire to assess if there is an ST elevation or dip, and a ruler so that you can measure the degree in millimeters. 7. T-wave - Finally, a quick reference to potential T-wave anomalies. The lead view of the heart is referenced in the upper right corner, which is useful in identifying areas of myocardial infarction. Remember :V1-V4= anterior MI and V3-V6= anterolateral MI Size: 8.5 * 5.4cm