2. What electrical events take place during the P, QRS, and T waves of the ECG?

Question

2. What electrical events take place during the P, QRS, and T waves of the ECG? What mechanical events are stimulated by these electrical events? (1 pt) 3. In this lab, you obtained an ECG using the bipolar limb leads. How is this the same or different from the 12-lead ECG that is standard practice clinically? What additional information is obtained from the 12 lead ECG that cannot be gathered from the bipolar limb leads alone? (1 pt) For each of the two conditions listed below, briefly (a) explain the cause of the condition, (b) draw an example of an ECG tracing that you might observe from someone with this condition- label any peaks that you would observe in the tracing, and (c) explain the reason for the ECG changes observed. (2 pts) 4. i. First Degree Heart Block ii. Ventricular Fibrillation

Explanation / Answer

wave electrical event mechanical event P wave atrial depolarization atrial systole QRS ventricular depolarization ventricular systole T wave ventricular repolarization ventricular systole

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