Advanced Arrhythmias Exam Prep Latest
2025 Questions AndVerified Answers
Graded A+
How long is a small box on an ECG rhythm strip? - Correct Answer-0.04 seconds
How long is a big box (5 small boxes) on an ECG rhythm strip? - Correct Answer-0.2 seconds
How many boxes on an ECG rhythm strip is = to 1 second? - Correct Answer-5 big boxes
How do you determine heart rate using the 6 second method? - Correct Answer-Count the
number of QRS complexes within a 6 second strip and multiply by 10
How do you determine heart rate using the big block method? - Correct Answer-300 divided by
the number of big blocks between 2 R waves
What does the P wave represent? - Correct Answer-atrial depolarization
What does the PR segment represent? - Correct Answer-the time required for the impulse to
travel through the AV node, where it is delayed, and through the bundle of His, bundle
branches, and Purkinje fibers, just before ventricular depolarization.
What does the QRS complex represent? - Correct Answer-ventricular depolarization
Where is the QRS interval measured? - Correct Answer-From the beginning of the Q (or R)
wave to the end of the S wave.
What does the T wave represent? - Correct Answer-ventricular repolarization
What does a U wave indicate? - Correct Answer-Possible hypokalemia
What does the QT interval represent? - Correct Answer-the total time required for ventricular
depolarization and repolarization
, How is the QT interval measured? - Correct Answer-beginning of the QRS complex to end of
the T wave
What rhythm is this? - Correct Answer-normal sinus rhythm
How long should the PR interval be? - Correct Answer-3-5 small boxes (.12-.20 seconds)
How is the PR interval measured? - Correct Answer-From the beginning of P to the beginning
of QRS.
How long should QRS complex be? - Correct Answer-less than 0.12 seconds (3 little boxes)
How is the ST segment measured? - Correct Answer-From the end of the QRS complex to the
beginning of the T wave
What does ST segment elevation indicate? - Correct Answer-myocardial infarction
What does ST segment depression indicate? - Correct Answer-myocardial ischemia
How long should the QT interval be? - Correct Answer-less than half of the R-R interval
What does normal sinus rhythm include? - Correct Answer-1. Rate 60-100 BPM
2. Regular
3. P waves: present, consistent, one for each QRS
4. PR interval 0.12-0.20 seconds
5. QRS: 0.04-0.12 seconds
What are some manifestations of decreased cardiac output? - Correct Answer-restlessness
anxiety
confusion
palpitations
dizziness/syncope
pallor/cool skin/diaphoresis
SOB, orthopnea
chest pain
hypotension
delayed capillary refill
extremity edema
weak pulse
decreased urine output
What is sinus arrhythmia? - Correct Answer-everything is within normal limits on EKG except
the R-R interval is variable
2025 Questions AndVerified Answers
Graded A+
How long is a small box on an ECG rhythm strip? - Correct Answer-0.04 seconds
How long is a big box (5 small boxes) on an ECG rhythm strip? - Correct Answer-0.2 seconds
How many boxes on an ECG rhythm strip is = to 1 second? - Correct Answer-5 big boxes
How do you determine heart rate using the 6 second method? - Correct Answer-Count the
number of QRS complexes within a 6 second strip and multiply by 10
How do you determine heart rate using the big block method? - Correct Answer-300 divided by
the number of big blocks between 2 R waves
What does the P wave represent? - Correct Answer-atrial depolarization
What does the PR segment represent? - Correct Answer-the time required for the impulse to
travel through the AV node, where it is delayed, and through the bundle of His, bundle
branches, and Purkinje fibers, just before ventricular depolarization.
What does the QRS complex represent? - Correct Answer-ventricular depolarization
Where is the QRS interval measured? - Correct Answer-From the beginning of the Q (or R)
wave to the end of the S wave.
What does the T wave represent? - Correct Answer-ventricular repolarization
What does a U wave indicate? - Correct Answer-Possible hypokalemia
What does the QT interval represent? - Correct Answer-the total time required for ventricular
depolarization and repolarization
, How is the QT interval measured? - Correct Answer-beginning of the QRS complex to end of
the T wave
What rhythm is this? - Correct Answer-normal sinus rhythm
How long should the PR interval be? - Correct Answer-3-5 small boxes (.12-.20 seconds)
How is the PR interval measured? - Correct Answer-From the beginning of P to the beginning
of QRS.
How long should QRS complex be? - Correct Answer-less than 0.12 seconds (3 little boxes)
How is the ST segment measured? - Correct Answer-From the end of the QRS complex to the
beginning of the T wave
What does ST segment elevation indicate? - Correct Answer-myocardial infarction
What does ST segment depression indicate? - Correct Answer-myocardial ischemia
How long should the QT interval be? - Correct Answer-less than half of the R-R interval
What does normal sinus rhythm include? - Correct Answer-1. Rate 60-100 BPM
2. Regular
3. P waves: present, consistent, one for each QRS
4. PR interval 0.12-0.20 seconds
5. QRS: 0.04-0.12 seconds
What are some manifestations of decreased cardiac output? - Correct Answer-restlessness
anxiety
confusion
palpitations
dizziness/syncope
pallor/cool skin/diaphoresis
SOB, orthopnea
chest pain
hypotension
delayed capillary refill
extremity edema
weak pulse
decreased urine output
What is sinus arrhythmia? - Correct Answer-everything is within normal limits on EKG except
the R-R interval is variable
