Question 1

What portion of the RR interval does the QT interval normal compose?

Accepted Answer

A)  60% 
B)  40% 
C)  20% 
D)  30% 
A)  60% 
B)  40% 
C)  20% 
D)  30% B

Question 2

Which portion of the ECG tracing represents total ventricular activity?

Accepted Answer

A)  T wave 
B)  QRS complex 
C)  QT interval 
D)  U wave 
A)  T wave 
B)  QRS complex 
C)  QT interval 
D)  U wave C

Question 3

The electrodes (leads) view the electrical activity of the heart from how many positions?

Accepted Answer

A)  10 
B)  12 
C)  8 
D)  9 
A)  10 
B)  12 
C)  8 
D)  9 B

Question 4

Which limb leads are considered to be the bipolar leads?

Accepted Answer

A)  I, II, and avL 
B)  II and aVL 
C)  III and aVL 
D)  I, II, and III 
A)  I, II, and avL 
B)  II and aVL 
C)  III and aVL 
D)  I, II, and III

Question 5

Which portion of the ECG tracing represents ventricular depolarization?

Accepted Answer

A)  T wave 
B)  P wave 
C)  PR interval 
D)  QRS complex 
A)  T wave 
B)  P wave 
C)  PR interval 
D)  QRS complex

Question 6

What is the name of imaginary equilateral triangle formed by the axes of the limb leads?

Accepted Answer

A)  Einthoven's 
B)  Entwhistle's 
C)  Entemann's 
D)  Eiserman's 
A)  Einthoven's 
B)  Entwhistle's 
C)  Entemann's 
D)  Eiserman's

Question 7

Which portion of an ECG tracing represents atrial depolarization?

Accepted Answer

A)  T wave 
B)  QRS complex 
C)  U wave 
D)  P wave 
A)  T wave 
B)  QRS complex 
C)  U wave 
D)  P wave

Question 8

Which low voltage wave may become more prominent in the presence of electrolyte disturbances, heart disease, or certain medications?

Accepted Answer

A)  T wave 
B)  Y wave 
C)  P wave 
D)  U wave 
A)  T wave 
B)  Y wave 
C)  P wave 
D)  U wave

Question 9

Which leads monitor the electrical activity in the frontal plane of the heart?
I. Limb leads
II. Precordial leads
III. Modified Chest Lead

Accepted Answer

A)  I and II only 
B)  I only 
C)  II only 
D)  I and III only 
A)  I and II only 
B)  I only 
C)  II only 
D)  I and III only

Question 10

How many electrodes are used in a 12 lead ECG?

Accepted Answer

A)  16 electrodes 
B)  6 electrodes 
C)  12 electrodes 
D)  10 electrodes 
A)  16 electrodes 
B)  6 electrodes 
C)  12 electrodes 
D)  10 electrodes

Question 11

What is the standard speed at which ECG systems run?

Accepted Answer

A)  25 mm/sec 
B)  2.5 mm/sec 
C)  25 cm/sec 
D)  2.5 cm/sec 
A)  25 mm/sec 
B)  2.5 mm/sec 
C)  25 cm/sec 
D)  2.5 cm/sec

Question 12

Of the precordial leads, which are considered to be the lateral leads?

Accepted Answer

A)  V5 and V6 
B)  V4, V5, and V6 
C)  V1, V2, and V3 
D)  V3, V4, V5 and V6 
A)  V5 and V6 
B)  V4, V5, and V6 
C)  V1, V2, and V3 
D)  V3, V4, V5 and V6

Question 13

Of the limb leads, which contributes the least amount of information for the 12 lead ECG interpretation?

Accepted Answer

A)  Lead III 
B)  aVL 
C)  aVR 
D)  aVF 
A)  Lead III 
B)  aVL 
C)  aVR 
D)  aVF

Question 14

On ECG paper operating at standard speed, what is the duration of the large squares?

Accepted Answer

A)  0.2 seconds 
B)  0.04 sec 
C)  2 seconds 
D)  0.4 sec 
A)  0.2 seconds 
B)  0.04 sec 
C)  2 seconds 
D)  0.4 sec

Question 15

On an ECG tracing, what is an isoelectric line called?

Accepted Answer

A)  interval 
B)  segment 
C)  waveform 
D)  complex 
A)  interval 
B)  segment 
C)  waveform 
D)  complex

Question 16

What does the "a" represent in the unipolar limb leads?

Accepted Answer

A)  abatement 
B)  attenuation 
C)  alteration 
D)  augmentation 
A)  abatement 
B)  attenuation 
C)  alteration 
D)  augmentation

Question 17

What waveform is recorded on an ECG tracing when an electrical impulse travels perpendicular to the lead axis?

Accepted Answer

A)  sawtooth 
B)  negative 
C)  positive 
D)  equiphasic 
A)  sawtooth 
B)  negative 
C)  positive 
D)  equiphasic

Question 18

Of the precordial leads, which are considered to be the anterior leads?

Accepted Answer

A)  V4, V5, and V6 
B)  V1, V2, and V3 
C)  V5 and V6 
D)  V1, V2, V3, and V4 
A)  V4, V5, and V6 
B)  V1, V2, and V3 
C)  V5 and V6 
D)  V1, V2, V3, and V4

Question 19

In a healthy adult at rest, what is the normal duration of the PR Interval?

Accepted Answer

A)  0.20 - 0.26 sec 
B)  0.12 - 0.20 sec 
C)  0.04 - 0.08 sec 
D)  0.08 - 0.12 sec 
A)  0.20 - 0.26 sec 
B)  0.12 - 0.20 sec 
C)  0.04 - 0.08 sec 
D)  0.08 - 0.12 sec

Question 20

Which health care professionals commonly obtain the ECGs in many hospitals across the USA?

Accepted Answer

A)  CRTs and RRTs 
B)  MAs 
C)  MDs and DOs 
D)  MLTs 
A)  CRTs and RRTs 
B)  MAs 
C)  MDs and DOs 
D)  MLTs

What portion of the RR interval does the QT interval normal compose?

Which portion of the ECG tracing represents total ventricular activity?

The electrodes (leads) view the electrical activity of the heart from how many positions?

Which limb leads are considered to be the bipolar leads?

Which portion of the ECG tracing represents ventricular depolarization?

What is the name of imaginary equilateral triangle formed by the axes of the limb leads?

Which portion of an ECG tracing represents atrial depolarization?

Which low voltage wave may become more prominent in the presence of electrolyte disturbances, heart disease, or certain medications?

Which leads monitor the electrical activity in the frontal plane of the heart? I. Limb leads II. Precordial leads III. Modified Chest Lead

How many electrodes are used in a 12 lead ECG?

What is the standard speed at which ECG systems run?

Of the precordial leads, which are considered to be the lateral leads?

Of the limb leads, which contributes the least amount of information for the 12 lead ECG interpretation?

On ECG paper operating at standard speed, what is the duration of the large squares?

On an ECG tracing, what is an isoelectric line called?

What does the "a" represent in the unipolar limb leads?

What waveform is recorded on an ECG tracing when an electrical impulse travels perpendicular to the lead axis?

Of the precordial leads, which are considered to be the anterior leads?

In a healthy adult at rest, what is the normal duration of the PR Interval?

Which health care professionals commonly obtain the ECGs in many hospitals across the USA?

The Anatomy and Physiology of the Respitory System

Ventilation

Pulmonary Function Measurements

The Diffusion of Pulmonary Gases

The Anatomy and Physiology of the Circulatory System

Oxygen and Carbon Dioxide Transport

Acid-Base Balance and Regulation

Ventilation-Perfusion Relationships

Control of Ventilation

Fetal Development and the Cardiopulmonary System

Aging and the Cardiopulmonary System

Electrophysiology of the Heart

Ecg Interpretation

Hemodynamic Measurements

Renal Failure and Its Effects on the Cardiopulmonary System

Sleep Physiology and Its Relationship to the Cardiopulmonary System

Exercise and Its Effects on the Cardiopulmonary System

High Altitude and Its Effects on the Cardiopulmonary System

High Pressure Environments and Their Effects on the Cardiopulmonary System

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Exam 13: The Standard 12-Ecg Lead System

What portion of the RR interval does the QT interval normal compose?

Which portion of the ECG tracing represents total ventricular activity?

The electrodes (leads) view the electrical activity of the heart from how many positions?

Which limb leads are considered to be the bipolar leads?

Which portion of the ECG tracing represents ventricular depolarization?

What is the name of imaginary equilateral triangle formed by the axes of the limb leads?

Which portion of an ECG tracing represents atrial depolarization?

Which low voltage wave may become more prominent in the presence of electrolyte disturbances, heart disease, or certain medications?

Which leads monitor the electrical activity in the frontal plane of the heart? I. Limb leads II. Precordial leads III. Modified Chest Lead

How many electrodes are used in a 12 lead ECG?

What is the standard speed at which ECG systems run?

Of the precordial leads, which are considered to be the lateral leads?

Of the limb leads, which contributes the least amount of information for the 12 lead ECG interpretation?

On ECG paper operating at standard speed, what is the duration of the large squares?

On an ECG tracing, what is an isoelectric line called?

What does the "a" represent in the unipolar limb leads?

What waveform is recorded on an ECG tracing when an electrical impulse travels perpendicular to the lead axis?

Of the precordial leads, which are considered to be the anterior leads?

In a healthy adult at rest, what is the normal duration of the PR Interval?

Which health care professionals commonly obtain the ECGs in many hospitals across the USA?

The Anatomy and Physiology of the Respitory System

Ventilation

Pulmonary Function Measurements

The Diffusion of Pulmonary Gases

The Anatomy and Physiology of the Circulatory System

Oxygen and Carbon Dioxide Transport

Acid-Base Balance and Regulation

Ventilation-Perfusion Relationships

Control of Ventilation

Fetal Development and the Cardiopulmonary System

Aging and the Cardiopulmonary System

Electrophysiology of the Heart

Ecg Interpretation

Hemodynamic Measurements

Renal Failure and Its Effects on the Cardiopulmonary System

Sleep Physiology and Its Relationship to the Cardiopulmonary System

Exercise and Its Effects on the Cardiopulmonary System

High Altitude and Its Effects on the Cardiopulmonary System

High Pressure Environments and Their Effects on the Cardiopulmonary System

Filters