Define ischemia
lack of blood supply
What is the electrical pathway of the heart's conduction system?
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?
Atria contract
What has to happen for the ventricles to contract?
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
sticky skin sensors that attach to the patient
electrodes
What does the T wave represent?
Ventricular repolarization (ventricular relaxation)
What does the P wave represent?
atrial depolarization (atrial contraction)
A 6 second strip in Lead II is called a
rhythm strip
Define artifact.
abnormal waveform on an EKG tracing
What is a "flat line" rhythm
asystole
how tall the tracing is. It is represented by 1x, 2x, or 3x.
Define amplitude/gain