EKG and Telemetry
National Exam 2026 |
Practice Questions &
Study Guide
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Updated 2026 Questions and Answers
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Rationales
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, The main typical waves of an ECG are... P, Q, R, S, and T
Even though there are 12 leads... there are actually only - 10
actual contacts on the body
How many leads of each type? 9 recording leads, 3 limbs (right arm, left arm, left leg), 6 on the chest, and one
neutral attached to the right leg. 3 remaining leads represent the augmented limb
leads from vectored combinations of the other 3 limb leads.
Various limb leads provide a - view of the heart frontal
6 chest leads provide a - view of the heart cross-sectional
Placement of lead 1 from the right arm(-) toward the left arm(+)
Placement of lead 2 from the right arm toward the left leg
Placement of lead 3 from the left arm toward the left leg
avR augmented lead toward the right arm
avL augmented lead toward the left arm
avF augmented lead toward the left foot
Placement of v1 4th intercostal space to the right of the sternum
Placement of v2 4th intercostal space to the left of the sternum
Placement of v3 Midway between V2 and V4
Placement of v4 5th intercostal space, left midclavicular line
Placement of v5 Horizontally even with v4, but in the anterior axillary line
Placement of v6 Horizontally even with v4 and v5 in the midaxillary line
Each small square on an ECG strip represents - seconds 0.04
A patient may need an ECG if they have any of the Chest pain, dizziness, heart palpitations, rapid pulse, shortness of breath, or
following signs and symptoms weakness
Intrinsic conduction system ability to create electrical impulses on its own without outside influence
Electrical impulse begins at the pacemaker of your heart, SA node, AV node
--- and then travels through the atria to the ---, and then
down through the ventricles
National Exam 2026 |
Practice Questions &
Study Guide
|Graded A+ | Guaranteed
success|
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
, The main typical waves of an ECG are... P, Q, R, S, and T
Even though there are 12 leads... there are actually only - 10
actual contacts on the body
How many leads of each type? 9 recording leads, 3 limbs (right arm, left arm, left leg), 6 on the chest, and one
neutral attached to the right leg. 3 remaining leads represent the augmented limb
leads from vectored combinations of the other 3 limb leads.
Various limb leads provide a - view of the heart frontal
6 chest leads provide a - view of the heart cross-sectional
Placement of lead 1 from the right arm(-) toward the left arm(+)
Placement of lead 2 from the right arm toward the left leg
Placement of lead 3 from the left arm toward the left leg
avR augmented lead toward the right arm
avL augmented lead toward the left arm
avF augmented lead toward the left foot
Placement of v1 4th intercostal space to the right of the sternum
Placement of v2 4th intercostal space to the left of the sternum
Placement of v3 Midway between V2 and V4
Placement of v4 5th intercostal space, left midclavicular line
Placement of v5 Horizontally even with v4, but in the anterior axillary line
Placement of v6 Horizontally even with v4 and v5 in the midaxillary line
Each small square on an ECG strip represents - seconds 0.04
A patient may need an ECG if they have any of the Chest pain, dizziness, heart palpitations, rapid pulse, shortness of breath, or
following signs and symptoms weakness
Intrinsic conduction system ability to create electrical impulses on its own without outside influence
Electrical impulse begins at the pacemaker of your heart, SA node, AV node
--- and then travels through the atria to the ---, and then
down through the ventricles
