exam 2- basic dysrhythmias || with Accurate Answers 100%.

what do you do if artifacts occur on an ECG? correct answers check connections in equipment rhythm starts in the SA node, 60-100 BPM, normal conduction pathway correct answers normal sinus rhythm normal P wave length correct answers .06-.20 the time of passive of impulse through the atria, causing atrial depolarization (atrial contraction) correct answers P wave normal PR interval length correct answers .12-.20 time taken for the impulse the spread through the atria, AV node, and bundle of HIS, bundle branches, & purkinje fibers, right up until ventricular contraction. (atrial contraction -> beginning of ventricular contraction) correct answers PR interval normal QRS length correct answers <.12 time taken for depolarization of both ventricles (systole- ventricular contraction) correct answers QRS normal ST segment length correct answers .12 time between ventricular depolarization and repolarization; should be isoelectric. (end of systole -> beginning of diastole) correct answers ST segment normal T wave length correct answers .16 ventricular relaxation (diastole) correct answers T wave is K or Na higher inside the cell? correct answers K is K or Na higher outside the cell? correct answers Na what happens with depolarization of a cell? correct answers Na influx into cell normal QT correct answers .34-.43 time taken for entire depolarization/repolarization of ventricles (ventricular contraction + relaxation) (ventricular diastole + systole) correct answers QT the ability of a cardiac cell to fire spontaneously without being activated correct answers automaticity