dual pathway phenomenon atrioventricular node |
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navigate by keyword : ecg education analysis cardiology cardiovascular medicine rhythm heart rate wave qrs atrial ventricular sinoatrial node bradycardia tachycardia normal leads reentrant arrhythmia wide narrow atrioventricular junction conduction sinus impulse double fire phenomenon long interval first degree block bundle branch slow pathway fast left ventricle right dual |
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On ECG paper, five small squares make up a middle square. Divide 300 by the number of middle squares occupied by adjacent identical ECG waves to get the heart rate. |
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