WorksheetsRhythm Strip Interpretations Quiz WK 2 (115)
Total questions: 47
Worksheet time: 24mins
What does the interpretation of rhythm strips require to measure?
Blood pressure
Heart rate
Duration and intervals
Body temperature
What is the purpose of EKG evaluation in rhythm strip interpretations?
To measure blood sugar levels
To gather data regarding different waveforms and their patterns
To check body temperature
To measure oxygen levels
What is the first step in the five-step process to interpretation?
Determine the Atrial & Ventricular Rate
Identify P-Wave Morphology
Determine Rhythm & Regularity
Measure blood pressure
What does the P-Wave reflect in the five-step process to interpretation?
Ventricular depolarization
Atrial depolarization
Blood pressure
Heart rate
What tool is used to measure the distance between P-waves and between QRS Complex in the five-step process to interpretation?
Ruler
Calipers
Stethoscope
Thermometer
What is the average stroke volume (SV) in a normal sinus rhythm (NSR) patient?
50 mL
70 mL
90 mL
110 mL
In the absence of valvular disease, a patient in NSR with normal ejection fraction (EF) should have:
Low SV and high CO
High SV and low CO
Normal SV and normal CO
Low SV and low CO
Which of the following is NOT a characteristic of sinus bradycardia?
Rhythm
Rate
P-Wave
Blood Pressure
What is one of the potential effects of sinus bradycardia in athletes?
Increased heart rate
Decreased heart rate
Increased blood pressure
Decreased blood pressure
What is the primary focus when measuring the QRS complex in sinus bradycardia?
Heart rate
Blood pressure
Electrical activity of the ventricles
Oxygen saturation
What does the term "HR" stand for in medical terminology?
Heart Rate
High Risk
Hemoglobin Ratio
Health Record
What does "PR Interval" refer to in an ECG reading?
The time between the start of the P wave and the start of the QRS complex
The duration of the QRS complex
The interval between two consecutive R waves
The length of the T wave
Which of the following is a characteristic of Sinus Tachycardia?
Heart rate above the patient's normal resting HR
Heart rate below the patient's normal resting HR
Irregular heart rhythm
Absence of P waves
What is the origin of Sinus Dysrhythmia?
Sinus node
Atrioventricular node
Bundle of His
Purkinje fibers
What is a distinguishing feature of a condition that appears very similar to NSR?
P-P & R-R intervals are regular
P-P & R-R intervals are irregular
HR progressively widens & narrows following breathing patterns
HR remains within normal limits
What is the action of the vagus nerve that relays information between the brain and heart called?
Tension
Relaxation
Vagal tone
Contraction
What happens to the pressure inside the chest cavity when a patient inhales?
It increases
It decreases
It remains the same
It fluctuates
What happens to the heart rate (HR) when a patient exhales?
It increases
It decreases
It remains the same
It fluctuates
What occurs when the SA Node stops firing?
Continuous electrical activity
No electrical impulse is initiated or conducted through the normal conduction system
Atrial and ventricular contraction
Increased heart rate
What is a brief period of pause in electrical activity called when the SA Node stops firing?
Tachycardia
Bradycardia
Asystole
Arrhythmia
What does it look like when the SA Node initiates an impulse that is blocked and not conducted to the atria?
Sinus Tachycardia
Sinus Bradycardia
Sinus Arrest
Atrial Flutter
What is the main difference between Sinus Exit Block and Sinus Arrest in terms of the duration of pause?
Sinus Exit Block is not correlated with the P-P or R-R interval, whereas Sinus Arrest is.
Sinus Exit Block is correlated with the P-P or R-R interval, whereas Sinus Arrest is not.
Both Sinus Exit Block and Sinus Arrest are correlated with the P-P or R-R interval.
Neither Sinus Exit Block nor Sinus Arrest are correlated with the P-P or R-R interval.
What happens during a Sinus Exit Block?
SA node fails to fire.
SA node fires but is blocked.
There is a pause in electrical activity.
There is no direct correlation with the P-P interval.
What happens during a Sinus Arrest?
SA node fails to fire.
SA node fires but is blocked.
There is no pause in electrical activity.
There is a direct correlation with the P-P interval.
What can cause Sinus Exit Blocks?
High blood pressure
Medication toxicity
Physical exercise
High cholesterol
What is an ectopic impulse in the context of atrial dysrhythmias?
An impulse that originates from the SA node
An impulse that interrupts the inherent rate
An impulse that maintains the inherent rate
An impulse that originates from the AV node
If atrial ectopic beats are generating impulses faster than the SA Node, it will __________________ the SA Node.
Inhibit
Suppress
Override
Ignore
What is the rhythm in which the pacemaker site shifts between the SA Node, other sites in the atria, and/or AV junction?
Premature Atrial Complexes (PACs)
Wandering Atrial Pacemaker
Atrial Fibrillation
Ventricular Tachycardia
How many different P wave morphologies must be present in the same lead to diagnose a Wandering Atrial Pacemaker?
1
2
3
4
Atrial Flutter occurs when a rapid impulse originates in which part of the heart?
Atrial tissue or reentry pathway
Ventricular tissue
Sinoatrial node
Purkinje fibers
What might Atrial Flutter lead to if not treated?
More atrial dysrhythmias
Lower heart rate
Increased blood pressure
Decreased oxygen levels
What are Flutter Waves also called?
P-Waves
T-Waves
F-Waves
QRS-Waves
What does each F Wave represent?
Atrial contraction
Ventricular contraction
Atrial depolarization
Ventricular depolarization
What is the ratio of F waves to QRS complexes?
1:1
2:1
3:1
4:1
What happens if the atria cannot contract completely?
Increase in Cardiac Output
Decrease in Cardiac Output
No change in Cardiac Output
Irregular Cardiac Output
What is the initial goal in treating Atrial Fibrillation?
Increase heart rate
Stabilize patient by slowing ventricular rate
Increase atrial contraction
Decrease ventricular contraction
What is the increased risk when blood begins to collect and pool in the atria during Atrial Fibrillation?
Heart attack
Stroke
Thrombus formation
Hypertension
What is the ventricular rate threshold for Uncontrolled Atrial Fibrillation?
> 60 bpm
> 80 bpm
> 100 bpm
> 120 bpm
What is the term for abnormal cells causing multiple electrical impulses in Atrial Fibrillation?
Ectopic Foci
Atrial Nodes
Ventricular Nodes
Cardiac Foci
What does a prolonged PR interval on an EKG suggest?
Ventricular tachycardia
Atrial fibrillation
First-degree heart block
Premature ventricular contraction
What does a "bundle branch block" look like on an EKG?
A prolonged PR interval
A shortened QT interval
A wide QRS complex
Multiple P waves before each QRS complex
What is the clinical significance of a "peaked" T wave on an EKG?
It is a normal variant in healthy individuals.
It may indicate hyperkalemia.
It signifies ventricular hypertrophy.
It is indicative of acute myocardial infarction.
Which condition is often associated with a "delta wave" on an EKG?
Wolff-Parkinson-White Syndrome
Long QT Syndrome
Brugada Syndrome
Ventricular fibrillation
Which of the following best describes sinus bradycardia?
A heart rate less than 60 bpm with a regular rhythm
A heart rate more than 100 bpm with an irregular rhythm
A heart rate less than 60 bpm with an irregular rhythm
A heart rate more than 100 bpm with a regular rhythm
What is the significance of an inverted T wave on an EKG?
It is a normal variant in children and some adults.
It may indicate myocardial ischemia.
It signifies rapid heart rate.
It is indicative of atrial fibrillation.
What is the correct sequence of the cardiac conduction system?
AV node → SA node → Bundle of His → Purkinje fibers
SA node → AV node → Bundle of His → Purkinje fibers
Purkinje fibers → SA node → AV node → Bundle of His
Bundle of His → Purkinje fibers → SA node → AV node
What is the normal range for the PR interval on an EKG?
0.12 to 0.20 seconds
0.20 to 0.40 seconds
0.05 to 0.10 seconds
0.01 to 0.08 seconds
