Ekg Practice Exam Flashcards
What is the heart’s primary pacemaker?
SA Node
What is a more medically correct term for the clotting of an artery?
Occlusion
When the Atria depolarize (or contract), what is shown on the EKG tracing?
P Wave
aVR picks up from the center of the ___ to the ___ ___.
Heart to the Right Arm
An irregular heartbeat that is common among children is called _____ _____.
Sinus Arrhythmia
1 small box on an EKG strip denotes 0.04 seconds of time. How long is this represented in millimeters?
1 mm
Lead I picks up from the ___ ___ to the ___ ___. (Add “to the” in your answer.)
Right Arm to the Left Arm
What is the term used to described the amount of blood pumped by the heart per minute?
Cardiac Output
Leads I through III are collectively known as?
Standard Leads
Lead II picks up from the ___ ___ to the ___ ___. (Add “to the” in your answer.)
Right Arm to the Left Leg
Leads V1 through V6 are collectively known as
Precordial Leads
What is the main artery in the arterial system?
Aorta
aVL picks up from the center of the ___ to the ___ ___.
Heart to the Left Arm
aVR, aVL, and aVF are collectively known as?
Augmented Leads
Lead III picks up from the ___ ___ to the ___ ___. (Add “to the” in your answer.)
Left Arm to the Left Leg
Leg electrodes are only used for?
Grounding
aVF picks up from the center of the ___ to the ___ ___.
Heart to the Left Leg
What is the main vein in the venous system?
Superior Vena Cava
When the heart is in a Systolic State, what pacemaker releases an electrical impulse?
AV Node
V5, located on the anterior axillary line (AAL), should be placed halfway between which two leads?
V4 and V6
The Mitral Valve is also known as the ___ ___.
Bicuspid Valve
When the Ventricles depolarize (or contract), what is shown on the EKG tracing?
QRS Complex
When clotting reduces oxygen supply to a region of the heart it is known as _____.
Ischemia
When the Atria repolarize (or are at rest), what is shown on the EKG tracing?
PR Segment
