Answer Happy

Which is false regarding normal ECG tracing i? Pwave occurs shortly before the QRS wave T wave represents repolarization of the atria QRS complex represents depolarization of the ventricles Q wave represent depolarization of ventricular septum Blank (not answered) Which is false about ectopic foci of excitation? Occurs due to a defect in conduction pathways Means a decrease in the automaticity of the heart. Occurs because all the parts of the conducting system are capable of spontaneous discharge It is a type of arrhythmia Blank (not answered) When there is excess excitation in atria, to keep the ventricular rate as low as possible, the following strategy are used EXCEPT* Decrease SA excitability O Vagal nerve stimulation Block the Na+ channels O M EPIC