EKG Review Test Questions and Answers

List 3 characteristics of a multi-channel or 3 channel EKG machine Speed,8× 11 paper,simultaneously records several leads at once What does ECG stand for?what dose it represent? Electrocardiography and galvanometer What is the phase of contraction also know as ? Depolarization What is the phase of relaxation also know as? Repolarization What is the name of the body's natural pacemaker? Sa node What is the purpose of pointing the power cord of the ECG machine away from the patient and not allowing it to go under the exam table? Decreases ac interference What does the p wave represent? Represents atrial depolarization What does QRS wave represent? Represent ventricular depolarization What does the t wave represent? Represent Ventricular repolarization What is the standardization mark? What does it represent?how high should it measure ? First mark of EKG . knows machine is working properly . 10 mm high What is the name of the pads that are placed on the skin ? What is on them?what is the purpose of the substance on the pads? What do the electrodes do? 1)Electrodes. 2)Electrolyte gel .3) Up impulses from hair . 4)Conduction What are the bipolar leads? I,II,III If you do not have a good conduction of the electrodes to the body due to poor quality of electrolyte gel, what could occur ? Wondering baseline After the SVC and IVC where does deoxygenated blood enter the heart ? Right atrium Through what artery do they enter the body to perform an angioplasty ? Femoral artery