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Electrocardiogram (ECG) Interpretation and Case Studies

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1.  According to the World Health Organization (WHO), CVDs are the number one cause of death globally, with how many million deaths every year? Close to 18 million 10 million 50 million 1 million

2.  How many electrodes are required for calculating a 12-lead ECG? 12 10 14 11

3.  What will the ECG indicate when determining ventricular fibrillation? No waves of peaks and valleys are shown on ECG Heartbeat is usually about 200-250 beats a minute No distinguishable p-waves Normal sinus rhythm

4.  If an ECG displays an absence of Q waves, what interpretation can be made by the respiratory therapist? Left bundle block Asystole Sinus tachycardia Normal sinus rhythm

5.  What electrical conduction abnormality produces a right bundle branch block pattern on an ECG? QRS duration is greater than or equal to 120 milliseconds Unusual P wave Sinus tachycardia, 129/min Normal sinus rhythm