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Analysis of the ECG

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Important Questions on Body Fluids and Circulation

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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG

Match List I with List II.

List I List II
A. P-wave I. Beginning of systole
B. Q-wave II. Repolarisation of ventricles

C. QRS complex

 III. Depolarisation of atria
D. T-wave IV. Depolarisation of ventricles

Choose the correct answer from the options given below:

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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
The QRS complex in a standard ECG represents:
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?  
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG

In the electrocardiogram, QRS complex stands for:

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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG

The diagram below shows a typical ECG.

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If the AV node is not functional, which of the following options correctly represents the changes seen in the ECG?

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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
In a standard ECG, one of the following functions of its components is not correctly interpreted.
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG

Recognize the figure and find out the correct matching?

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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
Match the Column - I with Column - II:
  Column – I   Column II
a P – wave i Depolarisation of ventricles
b QRS complex ii Repolarisation of ventricles
c T – wave iii Coronary ischemia
d Reduction in the size of T - wave iv  Depolarisation of atria
    v Repolarisation of atria

Select the correct option
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
If a person goes into cardiac arrest, the ECG shows
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
Which of the following correctly explains a phase/event in cardiac cycle in a standard electrocardiogram?
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
Which of the following is correct with respect to cardiac cycle of a standard electrocardiogram?
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
Which of the following is the diagrammatic representation of standard electrocardiogram (ECG)?
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG

Write the differences between:

(d) P-wave and T-wave

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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
Identify the incorrect statement from the following w.r.t. ECG.
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
Which of the following statements is not correct with respect to normal ECG?
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
How will you interpret an electrocardiogram (ECG) in which time taken in QRS complex is higher.
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG

Represent the union of two sets by Venn diagram for each of the following.

X={x | x is a prime number between 80 and 100}

Y={y | y is an odd number between 90 and 100}

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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG

In an ECG, the depolarization of atria is indicated by

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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
The given figure is the ECG of a normal human. Which one of its components is correctly interpreted below?
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Biology>Human Physiology>Body Fluids and Circulation>Cardiac Output and ECG
In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?