Deck 7: Waveforms Rate Rhythm and Artifacts

Question 1

Which of the following is the amount of electrical stimulus or the difference in action potential created by cardiac cell movement within the heart?

A) Isoelectric
B) Voltage
C) Current
D) Impulse

Answer 1

Voltage

Question 2

During what segment will the atria and ventricles be relaxed, which means the heart is in a diastolic state?

A) PRI interval
B) TP segment
C) PR segment
D) ST segment

Answer 2

TP segment

Question 3

Which of the following movement errors does the ECG tracing below show?

A) Somatic tremor
B) Wandering baseline
C) Shivering
D) Parkinson's disease

Answer 3

Wandering baseline

Question 4

With an irregularly irregular rhythm there is no R-R pattern or similarity between the P-R interval or QRS complexes. Irregularly irregular rhythms are due to abnormalities found in the atria. What disorder that has an irregularly irregular rhythm is illustrated in the ECG tracing in the figure below?
 

A) Wandering atrial pacemaker
B) Atrial tachycardia
C) Atrial fibrillation
D) Atrial depolarization

Question 5

What is the R-R interval used to measure?

A) Heartbeat rate and regularity
B) QRS complex rhythm
C) Heart rhythm
D) Ventricular heart rate

Question 6

The ECG tracing in the figure below represents what type of artifact?
 

A) Technician errors
B) Electrical interference
C) Rewiring errors
D) Machine errors

Question 7

Which of the following is defined as a measurable, regularly recurring, impulse of the heart?

A) Heart rate
B) Heart beat
C) Heart rhythm
D) Heart phases

Question 8

Which of the following heart rhythms, as shown in the figure below,   must have all the normal rhythm values plus the P wave must be upright and uniform in Lead II and the rhythm must be consistent with very little deviation?

A) Normal sinus
B) Regularly irregular
C) Occasionally irregular
D) Irregularly irregular

Question 9

Lead reversals can be spotted on an ECG usually by the inversion of ___________waves.

A) P
B) QRS
C) R
D) S

Question 10

Stress, exercise, general health, previous cardiac events, even sleeping can all alter the heart rate. What type of heart rate does the ECG tracing in the figure below represent?

A) A-Fib
B) Bradycardia
C) Tachycardia
D) Normal heart rate

Question 11

Which of the following intervals represents the entire ventricular depolarization and repolarization cycle?

A) PRI interval
B) Q-T interval
C) P-R Interval
D) R-R interval

Question 12

When there is no electrical activity occurring within the heart, the ECG strip will show as a solid flat line called the ____________.

A) isoelectric line
B) waveform
C) depolarization loop
D) missing wave

Question 13

What type of heart rhythm deviates from a normal rhythm on a regular basis and usually occurs as a patterned event?

A) Irregularly irregular rhythm
B) Occasionally irregular rhythm
C) Normal sinus rhythm
D) Regularly irregular rhythm

Question 14

Which of the following occurs during a normal PR segment?

A) Deflection
B) Atrial fibrillation
C) Atrial depolarization
D) Atrial tachycardia

Question 15

A normal heart rhythm has a heartbeat at regular intervals of how many beats per minute?

A) 125-150
B) 100-125
C) 60-100
D) 50-75

Question 16

______________ is the strength or magnitude of the action potential.

A) Duration
B) Repolarization
C) Amplitude
D) Conduction

Question 17

In any artifact, the indication of wavelength errors is not created by the ____________.

A) machine
B) patient
C) technician
D) heart

Question 18

____________ refers to the structural appearance such as the size and configuration of a wave or waveform.

A) Biphasic
B) Etiology
C) Physiology
D) Morphology

Question 19

Which of the following is calculated by using the horizontal axis on an ECG strip?

A) Heart beats
B) Heart phases
C) Heart rate
D) Heart rhythm

Question 20

What is the main reason that precordial leads are not placed where they belong?

A) Technician error
B) Outside interference
C) Somatic tremor
D) Obesity

Question 21

Calculate the heart rate for the ECG tracing below.

A) 60 bpm
B) 85 bpm
C) 115 bpm
D) 140 bpm

Question 22

The morphology of a normal S wave is a(n) ______________.

A) small, negative, spiked deflection
B) asymmetrical appearance
C) large, positive, spiked deflection in Lead II
D) small curved positive wave in Lead II

Question 23

What segment represents a conduction delay "time period" between ventricular depolarization and ventricular repolarization?

A) ST segment
B) PR segment
C) TP segment
D) PRI interval

Question 24

Which of the following waves peaks at the end of ventricular diastole and the start of systole?

A) R wave
B) T wave
C) R wave.
D) S wave

Question 25

When the sinoatrial node begins the electrical impulse, which of the following waves is created on the grid as both the right and left atria are depolarized?

A) R wave
B) Q wave
C) P wave
D) S wave

Question 26

A waveform that appears to _________ is one that appears abnormally rapid and sometimes erratic.

A) flutter
B) spike
C) fibrillate
D) curve

Question 27

A heart in ____________ can become deadly with the loss of blood circulation and pulse.

A) tachycardia
B) fibrillation mode
C) sinus rhythm
D) defibrillation mode

Question 28

What type of waveforms cross the isoelectric line with part of the waveform being upright and part of the waveform appears as inverted?

A) Fluttered
B) Notched
C) Fibrillated
D) Biphasic

Question 29

What wave is thought to represent repolarization of the Purkinje fibers?

A) T
B) S
C) U
D) R

Question 30

The ventricular relaxation phase is also called ventricular ____________.

A) repolarization
B) depolarization
C) systole
D) diastole

Question 31

What is measured with calipers?

A) Heart rhythm
B) Heart rate
C) R-R interval
D) Duration

Question 32

Which of the following shows up on an ECG tracing as a curved or spiked line either above or below the isoelectric line?

A) Complex
B) Wave
C) Interval
D) Segment

Question 33

A(n) ___________ on the ECG strip is a "time period" with no electrical activity occurring between waves, and if normal, looks like a flat line.

A) artifact
B) deflection
C) interval
D) segment

Question 34

The normal T wave is usually what shape in appearance?

A) Symmetrical
B) Asymmetrical
C) Spiked
D) Curved

Question 35

When the heart rhythm or heart rate is consistently or predictably irregular or abnormal, or absent, it is known as a(n)__________ .

A) sinus rhythm
B) arrhythmia
C) atrial systole
D) ventricular systole

Question 36

The measurement of a wave starts when the wave departs the____________.

A) baseline
B) isoelectric line
C) vertical axis
D) horizontal axis

Question 37

Which of the following waves sometimes appears as a result of certain antiarrhythmic drug effects, drug toxicity, or electrolyte imbalances?

A) R wave
B) S wave
C) U wave
D) T wave

Question 38

Which of the following limb lead reversal errors does this ECG tracing represent?

A) Reversal of left arm and left leg leads
B) Reversal of left arm and right arm leads
C) Reversal of right arm and right leg leads
D) Both arms and legs limb leads reversed

Question 39

Which of the following limb lead reversal errors does this ECG tracing represent?

A) Both arms and legs limb leads reversed
B) Reversal of left arm and right arm leads
C) Reversal of right arm and right leg leads
D) Reversal of left arm and right leg leads

Question 40

Which of the following precordial lead errors does this ECG tracing represent?

A) Reversal of V1 and V6
B) Reversal of V1 and V2
C) Reversal of right arm and right leg leads
D) Both arms and legs limb leads reversed