Kaiser South Rhythm Interpretation Assessment | KP Rhythm
Interpretation Assessment | 50 Questions and Answers | Fall 2025/26
Update | 100% Correct.
Question 1 of 4
Match the property of the cardiac conduction system with its description.
Property of the cell that allows it to accept initiation of stimulation
-Excitability
Property that moves electrical impulse along a membrane
-Conductivity
Ability of heart muscle to respond mechanically to an impulse
-Contractility
Ability of heart muscle to initiate an impulse, begin stimulation
-Automaticity - ANSWER -
Question 2 of 4
List in order the pathway of the normal cardiac impulse starting at the SA node.
The impulse causes the atria to contract.
The impulse travels from the AV node through the bundle of His.
The impulse divides into the left and right bundle branches.
The impulse reaches the Purkinje fibers.
The ventricles contract. - ANSWER -
Question 3 of 4
An increase in the rate of cardiac impulse initiation is linked to stimulation of which component?
, Purkinje system
Electrolyte system
Sympathetic nervous system
Parasympathetic nervous system - ANSWER -Sympathetic nervous system
The sympathetic nervous system is responsible for increasing the rate of cardiac impulse initiation at the
SA node. It also assists with node impulse conduction and cardiac contractility.
Question 4 of 4
Which electrolytes play key roles in polarization of the heart cells?
Sodium and potassium
Potassium and calcium
Potassium and glucose
Sodium and magnesium - ANSWER -Sodium and potassium
The electrolytes sodium and potassium are partners in cardiac function. A higher sodium level outside
the cell allows for a high potassium and low sodium level inside the cell. Potassium inside the cell is
required for the conduction of impulses to achieve a polarized state.
Question 1 of 4
Which wave on the ECG tracing will provide the nurse more information about atrial depolarization?
A
B
C
D - ANSWER -B
The P wave demonstrates the initial firing of the SA node. The P wave can display as positive (upright),
negative (inverted), or biphasic (both positive and negative).
Question 2 of 4
A patient asks the nurse, "Why do I need a 12-lead ECG if my heart rate is within normal limits?" The
nurse responds by explaining that which heart conditions may be identified by the 12-lead ECG?
Select all that apply.
Interpretation Assessment | 50 Questions and Answers | Fall 2025/26
Update | 100% Correct.
Question 1 of 4
Match the property of the cardiac conduction system with its description.
Property of the cell that allows it to accept initiation of stimulation
-Excitability
Property that moves electrical impulse along a membrane
-Conductivity
Ability of heart muscle to respond mechanically to an impulse
-Contractility
Ability of heart muscle to initiate an impulse, begin stimulation
-Automaticity - ANSWER -
Question 2 of 4
List in order the pathway of the normal cardiac impulse starting at the SA node.
The impulse causes the atria to contract.
The impulse travels from the AV node through the bundle of His.
The impulse divides into the left and right bundle branches.
The impulse reaches the Purkinje fibers.
The ventricles contract. - ANSWER -
Question 3 of 4
An increase in the rate of cardiac impulse initiation is linked to stimulation of which component?
, Purkinje system
Electrolyte system
Sympathetic nervous system
Parasympathetic nervous system - ANSWER -Sympathetic nervous system
The sympathetic nervous system is responsible for increasing the rate of cardiac impulse initiation at the
SA node. It also assists with node impulse conduction and cardiac contractility.
Question 4 of 4
Which electrolytes play key roles in polarization of the heart cells?
Sodium and potassium
Potassium and calcium
Potassium and glucose
Sodium and magnesium - ANSWER -Sodium and potassium
The electrolytes sodium and potassium are partners in cardiac function. A higher sodium level outside
the cell allows for a high potassium and low sodium level inside the cell. Potassium inside the cell is
required for the conduction of impulses to achieve a polarized state.
Question 1 of 4
Which wave on the ECG tracing will provide the nurse more information about atrial depolarization?
A
B
C
D - ANSWER -B
The P wave demonstrates the initial firing of the SA node. The P wave can display as positive (upright),
negative (inverted), or biphasic (both positive and negative).
Question 2 of 4
A patient asks the nurse, "Why do I need a 12-lead ECG if my heart rate is within normal limits?" The
nurse responds by explaining that which heart conditions may be identified by the 12-lead ECG?
Select all that apply.
