Designed to accompany Making Sense of the ECG: A Hands-On Guide, Fourth Edition, this supplemental testing resource presents everything students need to assess their ability to interpret ECGs accurately, perform differential diagnoses, and decide upon the most appropriate clinical management in each situation. The patients' history, examination, and initial investigations are presented along with questions on the ECG interpretation. Detailed explanatory answers provide practical guidance and essential revision, encouraging students to put principles into practice with a strong clinical emphasis.