GNRS 582(PATHO) – CARDIAC QUESTIONS
Where do you see saw-toothed waves? - Answers - Atrial flutter
Atrial fibrillation rhythms are always irregular - Answers - True (read the question
carefully)
The major characteristics of atrial flutter rhythm is: - Answers - Regular, fast, saw-
toothed
Which of the following describes an atrial fibrillation rhythm? - Answers - No P wave,
irregular, HR 111, QRS 0.12
P wave in ECG represents - Answers - Atrial depolarization
The natural pacemaker of the heart is: - Answers - SA node
AV node slows fast atrial contractions to protect the ventricles - Answers - True
Which of the following does NOT have significant contribution to the action potential of
the heart? - Answers - P
Electrolytes that move the heart - Answers - Na+, K+, Ca2+ all contribute to the
muscle of the heart
When AV node becomes the pacemaker, it fires at a rate of: - Answers - 40-60
PR interval becomes abnormal when it is longer than: - Answers - 0.18 seconds
What represents the ventricular contraction in ECG is: - Answers - QRS complex
Q wave deeper than one big box is a serious finding. - Answers - True
Tall, peaked T wave is most likely caused by: - Answers - Hyperkalemia
One small box on the ECG papers measures - Answers - 0.04 seconds
A 6-second rhythm strip has ___ big boxes. - Answers - 30
Formula: 1 second strip x 5? - Answers -
On an irregular 6-seconds rhythm you count 9 R waves, hence the HR is - Answers -
90 bpm
Formula: R waves x 10 - Answers -
, You count 30 big boxes between 2 consecutive R waves, what is the HR? - Answers -
50
You count 6 big boxes between 2 consecutive R waves, what is the HR? - Answers -
50
The major abnormality in junctional rhythms is: - Answers - Inverted P waves
The major difference between junctional escape and accelerated junctional is: -
Answers - HR
1st degree AV block is the most serious AV blocks - Answers - False
The P:QRS ration in 3rd degree AV block is 3:1 or 4:1. - Answers - False
The PR intervals in 2nd degree AV block type I is long and keeps getting longer. -
Answers - True
Which of the following is NOT a characteristic of normal sinus rhythm? - Answers -
QRS > 0.12
A sinus arrhythmia has - Answers - Irregular rhythm
Vagal stimulation can lead to bradycardia. - Answers - True
Valsalva maneuvers can help reduce HR in tachycardia. - Answers - True
Which of the following can cause bradycardia? - Answers - Hypothermia
The NSR criterion that sinus bradycardia does not meet is: - Answers - Normal HR
Which of the following is correct about ventricular tachycardia? - Answers - It is a
regular rhythm.
Which of the following is not true about ventricular fibrillation? - Answers - Atropine is
the drug of choice of ventricular fibrillation.
The most serious dysrhythmias of all is the ventricular ones. - Answers - True
Which vessel pumps oxygenated blood from left ventricle to rest of the body? -
Answers - aorta
Which vessel pumps non-oxygenated blood to lungs? - Answers - pulmonary ARTERY
Which vessel brings oxygenated blood from lungs to left atrium? - Answers -
pulmonary VEIN
Where do you see saw-toothed waves? - Answers - Atrial flutter
Atrial fibrillation rhythms are always irregular - Answers - True (read the question
carefully)
The major characteristics of atrial flutter rhythm is: - Answers - Regular, fast, saw-
toothed
Which of the following describes an atrial fibrillation rhythm? - Answers - No P wave,
irregular, HR 111, QRS 0.12
P wave in ECG represents - Answers - Atrial depolarization
The natural pacemaker of the heart is: - Answers - SA node
AV node slows fast atrial contractions to protect the ventricles - Answers - True
Which of the following does NOT have significant contribution to the action potential of
the heart? - Answers - P
Electrolytes that move the heart - Answers - Na+, K+, Ca2+ all contribute to the
muscle of the heart
When AV node becomes the pacemaker, it fires at a rate of: - Answers - 40-60
PR interval becomes abnormal when it is longer than: - Answers - 0.18 seconds
What represents the ventricular contraction in ECG is: - Answers - QRS complex
Q wave deeper than one big box is a serious finding. - Answers - True
Tall, peaked T wave is most likely caused by: - Answers - Hyperkalemia
One small box on the ECG papers measures - Answers - 0.04 seconds
A 6-second rhythm strip has ___ big boxes. - Answers - 30
Formula: 1 second strip x 5? - Answers -
On an irregular 6-seconds rhythm you count 9 R waves, hence the HR is - Answers -
90 bpm
Formula: R waves x 10 - Answers -
, You count 30 big boxes between 2 consecutive R waves, what is the HR? - Answers -
50
You count 6 big boxes between 2 consecutive R waves, what is the HR? - Answers -
50
The major abnormality in junctional rhythms is: - Answers - Inverted P waves
The major difference between junctional escape and accelerated junctional is: -
Answers - HR
1st degree AV block is the most serious AV blocks - Answers - False
The P:QRS ration in 3rd degree AV block is 3:1 or 4:1. - Answers - False
The PR intervals in 2nd degree AV block type I is long and keeps getting longer. -
Answers - True
Which of the following is NOT a characteristic of normal sinus rhythm? - Answers -
QRS > 0.12
A sinus arrhythmia has - Answers - Irregular rhythm
Vagal stimulation can lead to bradycardia. - Answers - True
Valsalva maneuvers can help reduce HR in tachycardia. - Answers - True
Which of the following can cause bradycardia? - Answers - Hypothermia
The NSR criterion that sinus bradycardia does not meet is: - Answers - Normal HR
Which of the following is correct about ventricular tachycardia? - Answers - It is a
regular rhythm.
Which of the following is not true about ventricular fibrillation? - Answers - Atropine is
the drug of choice of ventricular fibrillation.
The most serious dysrhythmias of all is the ventricular ones. - Answers - True
Which vessel pumps oxygenated blood from left ventricle to rest of the body? -
Answers - aorta
Which vessel pumps non-oxygenated blood to lungs? - Answers - pulmonary ARTERY
Which vessel brings oxygenated blood from lungs to left atrium? - Answers -
pulmonary VEIN
