QUESTIONS AND ACCURATE
ANSWERS GRADED A+ 2026
BRAND NEW
EKG or ECG stands for: - answer-electrocardiogram
What can an EKG detect? - answer-cardiac arrhythmia or dysrhythmia, ischemia,
electrolyte imbalance, effects of cardiac medications, damage caused by an MI
Define arrhythmia - answer-abnormal cardiac rhythm (think a= without, without rhythm)
Define ischemia - answer-lack of blood supply
What is the electrical pathway of the heart's conduction system? - answer-SA 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? -
answer-Atria contract
What has to happen for the ventricles to contract? - answer-Electrical 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 - answer-sticky skin sensors that attach to the patient
What is the purpose of the gel on the electrodes? - answer-to read the heart's electricity
and to amplify the waveforms
, EKG machine is also called an: - answer-electrocardiograph
Name the 2 types of EKG machines: - answer-Single channel and multichannel
When we do an EKG we are looking at the heart from : - answer-12 different points of
view or angles
How many electrodes are used to perform an EKG? - answer-10
What is an amplifier? - answer-Magnifies the heart's electrical signal so it can be
recorded.
What is the stylus? - answer-records the motion on the graph paper by burning the
impression into the heat-sensitive paper.
Name the limb leads. - answer-RA, LA, LL, RL
What is unique about EKG paper? - answer-It is head-sensitive and pressure-sensitive.
How big is a small block on EKG paper? - answer-1mm x 1 mm
How big is a large block on EKG paper? - answer-5mm x 5 mm
What speed does normal EKG paper run? - answer-25mm per second
Why would a CCMA increase the speed of the EKG paper? - answer-If the heart rate
were very fast, the speed would be increased to 50mm per second.