C

Question 1

What does ECG stand for in the context of medical diagnostics?

Answer 1

A) Electrocardiogram

Question 2

The P wave on an ECG represents which of the following?

Answer 2

C) Atrial depolarization

Question 3

What is the approximate duration of the P wave?

Answer 3

B) 0.1 seconds

Question 4

The PR interval is measured from:

Answer 4

A) The beginning of the P wave to the beginning of the QRS complex

Question 5

The normal PR interval duration is:

Answer 5

B) 0.12 - 0.20 seconds

Question 6

The PR interval reflects:

Answer 6

B) Atrial depolarization and the conduction delay through the AV node

Question 7

According to the diagram, the P wave represents:

Answer 7

c) Atrial depolarization

Question 8

Based on the image, the QRS complex indicates:

Answer 8

c) Ventricular depolarization

Question 9

In the illustration, the T wave signifies:

Answer 9

c) Ventricular repolarization

Question 10

The PR interval in the image represents the time from the beginning of the P wave to the beginning of the:

Answer 10

a) QRS complex

Question 11

According to the diagram, the QT interval encompasses the:

Answer 11

b) QRS complex and T wave

Question 12

The heart rate in an ECG can be estimated by dividing 300 by the number of:

Answer 12

a) Small squares between R waves

Question 13

Which of the following is NOT a bipolar lead in a standard ECG?

Answer 13

d) aVF

Question 14

The normal cardiac axis in an ECG is typically considered to be between:

Answer 14

a) 0 and +180 degrees

Question 15

Which of the following is an example of a unipolar lead?

Answer 15

c) V1

Question 16

Einthoven’s Law states that:

Answer 16

a) Lead I + Lead II = Lead III

Question 17

Kirchhoff’s Law, when applied to ECG leads, indicates that the sum of the voltages in Leads I, II, and III is:

Answer 17

c) Equal to zero

Question 18

Esophageal leads (Lewis leads) are particularly helpful in detecting:

Answer 18

b) Posterior wall myocardial infarction

Question 19

The T wave in an ECG is considered labile, meaning it is most easily affected by:

Answer 19

d) Electrolyte imbalances

Question 20

Bazett’s formula is commonly used to:

Answer 20

b) Correct the QT interval for heart rate

Question 21

A prolonged QTc interval is generally considered dangerous when it is greater than:

Answer 21

c) 0.50 seconds

Question 22

In a standard ECG, an augmented limb lead is:

Answer 22

b) Unipolar

Question 23

What is the PR interval?

Answer 23

B) Atrial depolarization and the conduction delay through the AV node

Question 24

What does the PR segment represent?

Answer 24

The portion of the ECG between the P wave and the QRS complex

Question 25

What does the QRS complex represent?

Answer 25

B) Ventricular depolarization

Question 26

Why is atrial repolarization not visible as a distinct wave on the ECG?

Answer 26

B) It is masked by the QRS complex

Question 27

What does the QT interval represent?

Answer 27

B) The time from the onset of ventricular depolarization to the end of ventricular repolarization

Question 28

What is the normal QT interval typically?

Answer 28

B) Up to 0.4 seconds

Question 29

What does the T wave represent?

Answer 29

B) Ventricular repolarization

Question 30

Where is the ST segment located?

Answer 30

B) Between the QRS complex and the T wave

Question 31

What does the ST segment correspond to?

Answer 31

A) The plateau phase of ventricular action potential

Question 32

What is a common ECG finding in Cardiac Tamponade?

Answer 32

C. Electrical Alternans

Question 33

What is a typical ECG characteristic of Acute Pericarditis?

Answer 33

A. Diffuse ST segment elevation with upward concavity

Question 34

Which ECG pattern is associated with Atrial Flutter?

Answer 34

B. Saw-toothed appearance

Question 35

What is a key ECG feature seen in Brugada Syndrome?

Answer 35

B. RBBB like pattern with ST elevation in V1-V3

Question 36

Which ECG finding is characteristic of Wellens Syndrome?

Answer 36

A. Symmetrical deep T wave inversion in precordial leads

Question 37

How does a Ventricular Premature Complex (VPC) typically appear on an ECG?

Answer 37

B. Wide and bizarre premature QRS complex, often followed by a compensatory pause

Question 38

What ECG characteristic is essential for diagnosing Torsades de Pointes?

Answer 38

B. Marked QT prolongation leading to polymorphic VT

Question 39

Which ECG findings are associated with Hypothermia?

Answer 39

A. Osborne (J) waves

Question 40

What is a common ECG manifestation of Digoxin Effect?

Answer 40

B. Reverse check mark or hockey stick sign

Question 41

Which arrhythmias are commonly associated with Digoxin Toxicity?

Answer 41

B. VPC, Supraventricular Tachycardia, Sinus Bradycardia, Atrial Fibrillation, AV Block

Question 42

What is the characteristic P wave finding in Right Atrial Enlargement?

Answer 42

B. Tall, peaked P wave (P pulmonale)

Question 43

Which P wave abnormality is seen in Left Atrial Enlargement?

Answer 43

B. Wide and notched P wave (P mitrale)

Question 44

What is a typical ECG finding for an Ectopic Pacemaker rhythm?

Answer 44

B. Short PR interval with retrograde P waves (negative in lead II)

Question 45

What is a hallmark ECG characteristic of WPW Syndrome?

Answer 45

B. Short PR interval with delta wave

Question 46

Which of the following is a key ECG feature of RBBB?

Answer 46

B. rSR' pattern in lead V1, M pattern in V5-V6

Question 47

What is a typical ECG finding in LBBB?

Answer 47

B. Wide QRS complex with negative deflection (QS or rS pattern) in V1

Question 48

Which conditions are associated with ST Segment Elevation?

Answer 48

d) All of the above

Question 49

Which of the following is NOT typically associated with ST Segment Elevation?

Answer 49

c) Hypothermia

Question 50

What can cause ST Segment Depression?

Answer 50

d) All of the above

Question 51

Absent P waves are characteristic of which condition?

Answer 51

a) Atrial Fibrillation

Question 52

Delta waves are associated with which syndrome?

Answer 52

a) WPW Syndrome

Question 53

Epsilon waves are seen in which condition?

Answer 53

a) Arrhythmogenic Right Ventricular Dysplasia

Question 54

The 'M-Mitrale' pattern indicates which condition?

Answer 54

a) Left Atrial Enlargement

Question 55

Q waves can signify which condition?

Answer 55

a) Old Myocardial Infarction

Question 56

A tall tented T wave is often seen in which condition?

Answer 56

a) Hyperkalemia

Question 57

U waves are associated with which condition?

Answer 57

a) Hypokalemia

Question 58

The S1Q3T3 pattern is associated with which condition?

Answer 58

a) Pulmonary Embolism