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Analysis of the ECG

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Important Questions on Body Fluids and Circulation

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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:

EASY
The QRS complex in a standard ECG represents:
MEDIUM
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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In the electrocardiogram, QRS complex stands for:

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EASY

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?

EASY
In a standard ECG, one of the following functions of its components is not correctly interpreted.
EASY

Recognize the figure and find out the correct matching?

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MEDIUM
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
EASY
If a person goes into cardiac arrest, the ECG shows
HARD
Which of the following correctly explains a phase/event in cardiac cycle in a standard electrocardiogram?
MEDIUM
Which of the following is correct with respect to cardiac cycle of a standard electrocardiogram?
HARD
Which of the following is the diagrammatic representation of standard electrocardiogram (ECG)?
MEDIUM

Write the differences between:

(d) P-wave and T-wave

MEDIUM
Identify the incorrect statement from the following w.r.t. ECG.
HARD
Which of the following statements is not correct with respect to normal ECG?
EASY
How will you interpret an electrocardiogram (ECG) in which time taken in QRS complex is higher.
MEDIUM

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}

MEDIUM

In an ECG, the depolarization of atria is indicated by

MEDIUM
The given figure is the ECG of a normal human. Which one of its components is correctly interpreted below?
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EASY
In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?