Cardiac Rhythm Monitors & Equipment 6.5 Flashcards
Which pathway depolarizes the left atrium?
a. Thorel tract
b. Bachmann bundle
c. Kent bundle
d. Wenckebach tract
Card. Rhythm Monitors & Equip.
b. Bachmann bundle
pre-lesson Q1
Match each phase of the ventricular action potential to its corresponding component on the EKG waveform.
1. phase 0
2. phase 2
3. phase 3
a. QRS complex
b. QT interval
c. T wave
Card. Rhythm Monitors & Equip.
1a
2b
3c
pre-lesson Q2
Match each disease with the EKG abnormality that it is most likely to cause.
1. Wolff-Parkinson-White syndrome
2. Pericarditis
3. Intracranial hemorrhage
4. Hypokalemia
a. PR interval depression
b. U wave
c. Peaked T wave
d. Delta wave
Card. Rhythm Monitors & Equip.
1d
2a
3c
4b
pre-lesson Q3
Match each lead to the cardiac region that it monitors.
1. aVF
2. Lead 1
3. V1
4. V3
a. lateral wall
b. septum
c. inferior wall
d. anterior wall
Card. Rhythm Monitors & Equip.
1c
2a
3b
4d
pre-lesson Q4
The mean electrical vector tends to point: (Select 2)
a. towards areas of hypertrophy
b. towards areas of myocardial infarction
c. away from areas of myocardial infarction
d. away from areas of hypertrophy
Card. Rhythm Monitors & Equip.
a. towards areas of hypertrophy
c. away from areas of myocardial infarction
pre-lesson Q5
All of the following are effective for the treatment of atrial fibrillation except:
a. verapamil
b. digoxin
c. metoprolol
d. adenosine
Card. Rhythm Monitors & Equip.
d. adenosine
pre-lesson Q6
Match each antiarrhythmic agent with its drug class.
1. Propranolol
2. Verapamil
3. Lidocaine
4. Amiodarone
a. Class 1
b. Class 2
c. Class 3
d. Class 4
Card. Rhythm Monitors & Equip.
1b
2d
3a
4c
pre-lesson Q8
Wolff-Parkinson-White syndrome is associated with:
a. atrial reentry
b. SA nodal reentry
c. atrial-ventricular reentry
d. ventricular reentry
Card. Rhythm Monitors & Equip.
c. atrial-ventricular reentry
pre-lesson Q9
A patient with Wolff-Parkinson-Whte syndrome develops atrial fibrillation during surgery. Select the best treatment for this situation. (Select 2)
a. cardioversion
b. verapamil
c. digoxin
d. procainamide
Card. Rhythm Monitors & Equip.
a. cardioversion
d. procainamide
pre-lesson Q10
All of the following increase the liklihood of torsades de pointes in the patient with long QT syndrome except:
a. hyperventilation
b. furosemide
c. methadone
d. metoprolol
Card. Rhythm Monitors & Equip.
d. metoprolol
lasix=hypo K & Mg, hypervent=K shift into cell
pre-lesson Q11
Match the NBG pacemaker identification code to its designated function.
1. position 1
2. position 2
3. position 3
4. position 4
a. response to sensed event
b. chamber sensed
c. chamber paced
d. programmability
Card. Rhythm Monitors & Equip.
1c
2b
3a
4d
pre-lesson Q12
A patient undergoing a bunionectomy has a VOO pacemaker with a rate of 80 bpm. During the procedure, there is failure to capture and the heart rate decreases to 50 beats per minute. Which of the following best explains why this complication occurred?
a. EtCO2 was 20 mmHg
b. an ultrasonic Harmonic scalpel was used
c. the patient was hyperthermic
d. the electrocautery was changed from “coagulation” to “cutting”
Card. Rhythm Monitors & Equip.
a. EtCO2 was 20 mmHg
hypocarbia=myocardium resistant to depolarization
pre-lesson Q13
Connect the accessory pathway to it’s connection.
1. James fiber
2. Atrio-hisian fiber
3. Kent’s bundle
4. Mahaim bundle
a. atrium to ventricle
b. AV node to ventricle
c. atrium to AV node
d. atrium to His bundle
Card. Rhythm Monitors & Equip.
1c
2d
3a
4b
section 1 flashcard
What ion moves out of the cell in 4 of the 5 phases of the ventricular action potential?
Card. Rhythm Monitors & Equip.
potassium
section 2 flashcard
Describe the difference between the absolute and relative refractory period.
Card. Rhythm Monitors & Equip.
Absolute: no stimulus can depolarize the myocyte
Relative: a larger than normal stimulus is needed to depolarize the myocyte
section 2 flashcard
What portion of the ventricular action potential occurs during the ST segment?
Card. Rhythm Monitors & Equip.
end of ventricular depolarization
section 2 flashcard
Match the normal value of each part of the EKG.
1. QTc
2. QRS
3. P wave
4. Q wave
5. PR interval
a. 0.08
b. 0.08
c. 0.03
d. 0.2
e. 0.45
Card. Rhythm Monitors & Equip.
1e
2a
3b
4c
5d
section 3 flashcard
What is the J point on the EKG?
Card. Rhythm Monitors & Equip.
The J point is where the QRS complex ends and the ST segment begins. By measuring this point relative to the PR segment, we can quantify the amount of ST elevation and depression.
section 3 flashcard
What segment of the EKG is considered isoelectric?
Card. Rhythm Monitors & Equip.
PR interval
section 3 flashcard
What is considered a significant ST change?
Card. Rhythm Monitors & Equip.
As a general rule, a J point greater than +1.0 or less than -1.0 relative to the PR segment is considered significant.
section 3 flashcard
What is the mean electrical vector?
Card. Rhythm Monitors & Equip.
the average current flow of all the action potentials at a given point in time
section 4 flashcard
Name 3 bipolar leads
Card. Rhythm Monitors & Equip.
Lead I, II, III
section 4 flashcard
Name 3 limb leads
Card. Rhythm Monitors & Equip.
aVR, aVL, aVF
section 4 flashcard
