NHA EKG CERTIFICATION STUDY GUIDE | LATEST UPDATED 2026/2027 (GRADED A+)
SA Node ✔️What is the heart's primary pacemaker?
Occlusion ✔️What is a more medically correct term for the clotting of an artery?
P Wave ✔️When the Atria depolarize (or contract), what is shown on the EKG tracing?
Heart to the Right Arm ✔️aVR picks up from the center of the ___ to the ___ ___.
(Add "to the" in your answer.)
Sinus Arrhythmia ✔️An irregular heartbeat that is common among children is called _____ _____.
1 mm ✔️1 small box on an EKG strip denotes 0.04 seconds of time. How long is this represented in millimeters?
Right Arm to the Left Arm ✔️Lead I picks up from the ___ ___ to the ___ ___. (Add "to the" in your answer.)
Cardiac Output ✔️What is the term used to described the amount of blood pumped by the heart per minute?
Standard Leads ✔️Leads I through III are collectively known as?
Right Arm to the Left Leg ✔️Lead II picks up from the ___ ___ to the ___ ___. (Add "to the" in your answer.)
Precordial Leads ✔️Leads V1 through V6 are collectively known as
(Hint: Chest)
Aorta ✔️What is the main artery in the arterial system?
(Hint: It carries oxygenated blood to the heart and other parts of the body.)
Heart to the Left Arm ✔️aVL picks up from the center of the ___ to the ___ ___.
(Add "to the" in your answer.)
Augmented Leads ✔️aVR, aVL, and aVF are collectively known as?
Left Arm to the Left Leg ✔️Lead III picks up from the ___ ___ to the ___ ___. (Add "to the" in your answer.)
Grounding ✔️Leg electrodes are only used for?
Heart to the Left Leg ✔️aVF picks up from the center of the ___ to the ___ ___.
(Add "to the" in your answer.)
Superior Vena Cava ✔️What is the main vein in the venous system? (Hint: It carries deoxygenated blood from the lungs to the heart's right
atrium.)
AV Node ✔️When the heart is in a Systolic State, what pacemaker releases an electrical impulse?
V4 and V6 ✔️V5, located on the anterior axillary line (AAL), should be placed halfway between which two leads?
Bicuspid Valve ✔️The Mitral Valve is also known as the ___ ___.
QRS Complex ✔️When the Ventricles depolarize (or contract), what is shown on the EKG tracing?
Systolic ✔️When using a Sphygmomanometer (Blood Pressure Cuff) to measure blood pressure, the FIRST audible thump when listening to the
brachial artery with a Stethoscope denotes what kind of pressure?
Second ✔️The Angle of Louis provides the LOCATION for which intercostal space? (Write out the number)
Ischemia ✔️When clotting reduces oxygen supply to a region of the heart it is known as _____.
PR Segment ✔️When the Atria repolarize (or are at rest), what is shown on the EKG tracing?
SA Node ✔️What is the heart's primary pacemaker?
Occlusion ✔️What is a more medically correct term for the clotting of an artery?
P Wave ✔️When the Atria depolarize (or contract), what is shown on the EKG tracing?
Heart to the Right Arm ✔️aVR picks up from the center of the ___ to the ___ ___.
(Add "to the" in your answer.)
Sinus Arrhythmia ✔️An irregular heartbeat that is common among children is called _____ _____.
1 mm ✔️1 small box on an EKG strip denotes 0.04 seconds of time. How long is this represented in millimeters?
Right Arm to the Left Arm ✔️Lead I picks up from the ___ ___ to the ___ ___. (Add "to the" in your answer.)
Cardiac Output ✔️What is the term used to described the amount of blood pumped by the heart per minute?
Standard Leads ✔️Leads I through III are collectively known as?
Right Arm to the Left Leg ✔️Lead II picks up from the ___ ___ to the ___ ___. (Add "to the" in your answer.)
Precordial Leads ✔️Leads V1 through V6 are collectively known as
(Hint: Chest)
Aorta ✔️What is the main artery in the arterial system?
(Hint: It carries oxygenated blood to the heart and other parts of the body.)
Heart to the Left Arm ✔️aVL picks up from the center of the ___ to the ___ ___.
(Add "to the" in your answer.)
Augmented Leads ✔️aVR, aVL, and aVF are collectively known as?
Left Arm to the Left Leg ✔️Lead III picks up from the ___ ___ to the ___ ___. (Add "to the" in your answer.)
Grounding ✔️Leg electrodes are only used for?
Heart to the Left Leg ✔️aVF picks up from the center of the ___ to the ___ ___.
(Add "to the" in your answer.)
Superior Vena Cava ✔️What is the main vein in the venous system? (Hint: It carries deoxygenated blood from the lungs to the heart's right
atrium.)
AV Node ✔️When the heart is in a Systolic State, what pacemaker releases an electrical impulse?
V4 and V6 ✔️V5, located on the anterior axillary line (AAL), should be placed halfway between which two leads?
Bicuspid Valve ✔️The Mitral Valve is also known as the ___ ___.
QRS Complex ✔️When the Ventricles depolarize (or contract), what is shown on the EKG tracing?
Systolic ✔️When using a Sphygmomanometer (Blood Pressure Cuff) to measure blood pressure, the FIRST audible thump when listening to the
brachial artery with a Stethoscope denotes what kind of pressure?
Second ✔️The Angle of Louis provides the LOCATION for which intercostal space? (Write out the number)
Ischemia ✔️When clotting reduces oxygen supply to a region of the heart it is known as _____.
PR Segment ✔️When the Atria repolarize (or are at rest), what is shown on the EKG tracing?
