EKG KAISER EKG BASICS TEST STUDY GUIDE QUESTIONS WITH CORRECT VERIFIED ANSWERS A+ GRADED

What property is the ability of a cardiac cell to initiate an electrical impulse? Automaticity Excitability Conductivity Contractility - ANS Automaticity What electrolyte is important in cardiac muscle contraction? Calcium Chloride Glucose Phosphorus - ANS Calcium What are ECG artifacts? A normal finding False cardiac waves The action potential Ventricular repolarization - ANS False cardiac waves What is the most common reason for the alarm to sound during an ECG procedure? Abnormal cardiac rhythm Loosening of a leadwire Myocardial infarction Patient motion artifact - ANS Loosening of a leadwire Lead I is helpful for monitoring? (Select all that apply) Atrial rhythms Hemi blocks QRS complexes Ventricular function - ANS Atrial rhythms Hemi blocks When the parasympathetic nerve fibers are stimulated what is released? Acetylcholine Adrenaline Norepinephrine Vagal - ANS Acetylcholine ECGs are used to monitor the effects of new medications. True False - ANS True ECGs may be used to monitor: (Select all that apply.) Deviations from rhythm trends Effects of a new drug Ejection fraction Rhythm trends - ANS Deviations from rhythm trends Effects of a new drug Rhythm trends Along with Lead II, Lead III is most helpful for monitoring what? Anterior wall Changes associated with inferior wall myocardial infarction QRS complexes Ventricular function - ANS Changes associated with inferior wall myocardial infarction What is the normal measurement for the QRS complex? 0.04 to 0.12 seconds 0.04 to 0.10 seconds 0.10 to 0.24 seconds 0.14 to 0.20 seconds - ANS 0.04 to 0.10 seconds The PRI is condensed abnormal or prolonged if it measures greater than _____. 0.06 seconds 0.12 seconds 0.20 seconds 0.24 seconds - ANS 0.20 seconds