Quiz #3 - Electrophysiology
- 1.Ventricular Repolarization is represented by _____________ on an ECG
- A.
ST Segment
- B.
T Wave
- C.
U Wave
- D.
QRS Complex
- 2.The QRS complex corresponds to....
- A.
Ventricular Depolarization
- B.
Ventricular Repolarization
- C.
Atrial Depolarization
- D.
None of the above
- 3.The _____________ sets the natural pace of heart at a rate of ______________
- A.
Av Node, 60-100 BPM
- B.
Bundle of HIS, 40-60 BPM
- C.
AV Node, 100-120 BPM
- D.
SA Node, 60-100 BPM
- 4.The P wave on an ECG corresponds to:
- A.
Atrial repolarization
- B.
Ventricular depolarization
- C.
Atrial depolarization
- D.
Delay at the AV node
- 5.Ventricular Fibrillation is dangerous because it can result in ________________
- 6.Which Supraventricular Tachycardia is characterized by a saw tooth pattern on an ECG?
- A.
AVRT
- B.
AVNRT
- C.
AFib
- D.
Aflutter
- 7.Which Supraventricular tachycardia is associated with a delta wave on an ECG?
- A.
AVRT (WPW)
- B.
AVNRT
- C.
AFlutter
- D.
AFib
- 8.AFib is characterized by rapid, regular contractions of the Atria.
- A.
True
- B.
False
- 9.The 4 categories of AFib are ____________, ___________________, ________________, and ___________
- 10.Cardiac rhythm is above 100 BPM is also known as
- A.
Tachycardia
- B.
Bradycardia
- C.
Atrial Flutter
- D.
AVRT
- 11.If a patient has a heartbeat of 40-60 BPM, which of the following would not be true?
- A.
The AV Node is depolarizing spontaneously
- B.
The SA node is not stimulating the AV Node
- C.
The patient is experiencing bradycardia
- D.
The SA node is setting the pace
- 12.True or False? Calcium initiates contraction and also delays repolarization
- A.
True
- B.
False
- 13.Intermittent failure of the AV Node is referred to as _________________ AV Block
- 14.Which best describes why impulses are delayed at the AV node?
- A.
The bundle of His has a long refractory period
- B.
The SA node has a long refractory period
- C.
Atrial contraction takes longer than ventricular contraction
- D.
To allow for ventricular filling
- 15.True or False? During depolarization the cell's inner electric charge becomes more negative.
- A.
True
- B.
False
- 16.True or False? Rate of stroke is 5x higher for patients with AFib due to stagnant blood in the right atrial appendage
- A.
True
- B.
False
- 17.Which of the following arrhythmias results in heart rate slower than the average resting HR (60bpm)
- A.
Tachycardia
- B.
AVRT
- C.
Premature Ventricular Contractions
- D.
AV Block - 3rd Degree
- 18.True or False? Congenital health conditions develop in early childhood.
- A.
True
- B.
False
- 19.The action potential travels from the AV node to the right & left bundle branches via the ____________________________.
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