EKG Test Exam Questions And Answers With 100% Correct Answers

EKG Test Exam Questions And Answers With 100% Correct Answers EKG or ECG stands for: - answerelectrocardiogram What can an EKG detect? - answercardiac arrhythmia or dysrhythmia, ischemia, electrolyte imbalance, effects of cardiac medications, damage caused by an MI Define arrhythmia - answerabnormal cardiac rhythm (think a= without, without rhythm) Define ischemia - answerlack of blood supply What is the electrical pathway of the heart's conduction system? - answerSA node->AV node->Bundle of His->Right and Left Bundle Branches->Purkinje fibers When the SA node is stimulated, what mechanical action happens in the heart? - answerAtria contract What has to happen for the ventricles to contract? - answerElectrical conduction has to pass through the AV node, down the Bundle of His, through the right and left bundle branches, into the purkinje fibers. Once they reach the Purkinje fibers, then the ventricles will contract. Electrodes - answersticky skin sensors that attach to the patient What is the purpose of the gel on the electrodes? - answerto read the heart's electricity and to amplify the waveforms EKG machine is also called an: - answerelectrocardiograph Name the 2 types of EKG machines: - answerSingle channel and multichannel When we do an EKG we are looking at the heart from : - answer12 different points of view or angles How many electrodes are used to perform an EKG? - answer10 What is an amplifier? - answerMagnifies the heart's electrical signal so it can be recorded. What is the stylus? - answerrecords the motion on the graph paper by burning the impression into the heat-sensitive paper. Name the limb leads. - answerRA, LA, LL, RL What is unique about EKG paper? - answerIt is head-sensitive and pressure-sensitive. How big is a small block on EKG paper? - answer1mm x 1 mm How big is a large block on EKG paper? - answer5mm x 5 mm What speed does normal EKG paper run? - answer25mm per second Why would a CCMA increase the speed of the EKG paper? - answerIf the heart rate were very fast, the speed would be increased to 50mm per second. How much TIME does each small square on EKG paper represent? - answer0.04 seconds How much TIME does each large squ