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Q. No.What does the 'P' wave in an ECG represent?
1. Ventricular depolarization
2. Atrial repolarization
3. Ventricular repolarization
4. Atrial depolarization
1. Ventricular depolarization
2. Atrial repolarization
3. Ventricular repolarization
4. Atrial depolarization
Subtopic: ECG & Coronary Artery Disease |
90%
Level 1: 80%+
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Which of the following events is not represented as a wave on the standard ECG?
1. Depolarisation of atria
2. Repolarisation of atria
3. Depolarisation of ventricles
4. Repolarisation of ventricles
1. Depolarisation of atria
2. Repolarisation of atria
3. Depolarisation of ventricles
4. Repolarisation of ventricles
Subtopic: ECG & Coronary Artery Disease |
84%
Level 1: 80%+
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Regarding normal ECG tracings:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | The P-wave represents the electrical excitation (or depolarization) of the atria. |
| II: | The QRS complex represents the depolarization of the ventricles, which initiates the ventricular contraction. |
| III: | The end of the T-wave marks the end of diastole. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: ECG & Coronary Artery Disease |
60%
Level 2: 60%+
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Consider the two statements:
| Assertion (A): | Any deviation from the normal shape of ECG indicates a possible abnormality or disease. |
| Reason (R): | The ECGs obtained from different individuals have roughly the same shape for a given lead configuration. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: ECG & Coronary Artery Disease |
68%
Level 2: 60%+
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Subtopic: ECG & Coronary Artery Disease |
91%
Level 1: 80%+
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Which tracing on the standard ECG leads to contraction of the ventricles during a cardiac cycle?
| 1. | P wave | 2. | QRS complex |
| 3. | ST segment | 4. | T wave |
Subtopic: ECG & Coronary Artery Disease |
91%
Level 1: 80%+
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To obtain a standard ECG, a patient is connected to the machine with three electrical leads including all the following except:
| 1. | One to right wrist | 2. | One to left wrist |
| 3. | One to right ankle | 4. | One to left ankle |
Subtopic: ECG & Coronary Artery Disease |
80%
Level 1: 80%+
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The period of systole is represented on surface ECG as between:
1. Beginning of P wave and beginning of Q wave
2. End of S wave and beginning of T wave
3. Shortly after Q wave and end of the T wave
4. Two successive R waves
Subtopic: ECG & Coronary Artery Disease |
Level 3: 35%-60%
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Most cases of CAD result from:
| 1. | Angina pectoris | 2. | Myocardial infarction |
| 3. | Atherosclerosis | 4. | Heart failure |
Subtopic: ECG & Coronary Artery Disease |
81%
Level 1: 80%+
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Match each item in Column-I with one in Column-II and select the correct answer from the codes given:
| Column-I | Column-II | ||
| A. | Heart failure | a. | Lowered ejection fraction of a ventricle |
| B. | Heart attack | b. | Damage to the cardiac muscle |
| C. | Heart block | c. | Abnormal delay in conduction in nodal tissue |
| D. | Cardiac arrest | d. | Sudden stoppage of the heart |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | c | d |
| 3. | b | a | d | c |
| 4. | a | d | b | c |
Subtopic: ECG & Coronary Artery Disease |
75%
Level 2: 60%+
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Q. No.
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