EKG NATIONAL EXAMS SCRIPT ALL QUESTIONS
AND ANSWERS SET A+
✔✔what is the most common rhythm a blood clot can present on an EKG - ✔✔atrial
fibrillation
✔✔what is the internal pacemaker of the heart called - ✔✔SA node
✔✔what is a lead (s) - ✔✔a device that collects or conducts electrical currents or
activities
✔✔what does lead AVF do - ✔✔records the electrical activity of the heart by recording
the left leg activity
✔✔where is lead V4 placed - ✔✔between lead 3 and AV5
✔✔what is the most common view of the heart that looks downward toward the apex of
the heart on the left side - ✔✔lead AVL
✔✔where is the apex of the heart located - ✔✔at the tip or point of the heart
✔✔three valves regulate blood flow through the heart - ✔✔false
✔✔what is the myocardium - ✔✔the thickest layer of the heart
✔✔what happens when the myocardium is stimulated - ✔✔its muscles contract
✔✔on an average a normal heart beats approximately 100,000 times per minute -
✔✔true
✔✔why is this cardiac tissue unique - ✔✔because it is all fused together so it acts as
one
, ✔✔where does the U-wave show up on a EKG - ✔✔after the T wave
✔✔in what leads do double u waves appear - ✔✔leads 2 and 2
✔✔what position should a patient be in when obtaining an EKG - ✔✔supine
✔✔what should be coded into the ECG machine prior to the EKG machine - ✔✔patients
name, date of birth, medication (all above the above)
✔✔where is the apex of the heart located - ✔✔at the tip or point of the heart
✔✔can outside noise interference such as a train or large truck cause artifact - ✔✔true
✔✔in a QRS complex, if the first wave is up, what type of wave is it - ✔✔R
✔✔how many electrodes are used in a 12 lead ECG - ✔✔10
✔✔what is a normal standardization of an ECG machine - ✔✔25 mm
✔✔how many valves does the heart have - ✔✔4
✔✔when blood travels from the left atrium to the left ventricle, which valve does it go
through - ✔✔the mitral valve
✔✔what happens when the myocardium is stimulated - ✔✔the heart muscle contracts
✔✔where is the AV bundle located - ✔✔on the wall between the right atrium and the
right ventricle
✔✔what is the purpose of the conduction system - ✔✔to initiate the heart beat and
regulate the cardiac cycle
✔✔how many leads are used on a EKG - ✔✔10
✔✔what is a complete cardiac cycle - ✔✔the beginning of a heart beat to the beginning
of the next beat
✔✔which of the following represent the cardiac cycle - ✔✔P-R interval
✔✔what does the t wave represent - ✔✔the relaxation of the heart
AND ANSWERS SET A+
✔✔what is the most common rhythm a blood clot can present on an EKG - ✔✔atrial
fibrillation
✔✔what is the internal pacemaker of the heart called - ✔✔SA node
✔✔what is a lead (s) - ✔✔a device that collects or conducts electrical currents or
activities
✔✔what does lead AVF do - ✔✔records the electrical activity of the heart by recording
the left leg activity
✔✔where is lead V4 placed - ✔✔between lead 3 and AV5
✔✔what is the most common view of the heart that looks downward toward the apex of
the heart on the left side - ✔✔lead AVL
✔✔where is the apex of the heart located - ✔✔at the tip or point of the heart
✔✔three valves regulate blood flow through the heart - ✔✔false
✔✔what is the myocardium - ✔✔the thickest layer of the heart
✔✔what happens when the myocardium is stimulated - ✔✔its muscles contract
✔✔on an average a normal heart beats approximately 100,000 times per minute -
✔✔true
✔✔why is this cardiac tissue unique - ✔✔because it is all fused together so it acts as
one
, ✔✔where does the U-wave show up on a EKG - ✔✔after the T wave
✔✔in what leads do double u waves appear - ✔✔leads 2 and 2
✔✔what position should a patient be in when obtaining an EKG - ✔✔supine
✔✔what should be coded into the ECG machine prior to the EKG machine - ✔✔patients
name, date of birth, medication (all above the above)
✔✔where is the apex of the heart located - ✔✔at the tip or point of the heart
✔✔can outside noise interference such as a train or large truck cause artifact - ✔✔true
✔✔in a QRS complex, if the first wave is up, what type of wave is it - ✔✔R
✔✔how many electrodes are used in a 12 lead ECG - ✔✔10
✔✔what is a normal standardization of an ECG machine - ✔✔25 mm
✔✔how many valves does the heart have - ✔✔4
✔✔when blood travels from the left atrium to the left ventricle, which valve does it go
through - ✔✔the mitral valve
✔✔what happens when the myocardium is stimulated - ✔✔the heart muscle contracts
✔✔where is the AV bundle located - ✔✔on the wall between the right atrium and the
right ventricle
✔✔what is the purpose of the conduction system - ✔✔to initiate the heart beat and
regulate the cardiac cycle
✔✔how many leads are used on a EKG - ✔✔10
✔✔what is a complete cardiac cycle - ✔✔the beginning of a heart beat to the beginning
of the next beat
✔✔which of the following represent the cardiac cycle - ✔✔P-R interval
✔✔what does the t wave represent - ✔✔the relaxation of the heart
