ECG Curve

Q. Describe the conducting system of the heart

Q. T-wave in electrocardiogram represents:

1. The return of ventricles from excited to normal state
2. Depolarisation of ventricles from normal to excited state
3. Onset of atrial systole
4. Onset of atrial diastole

Q. Ventricular muscle depolarization is indicated by ___________.

1. P wave
2. PR interval
3. T wave
4. QRS complex

Q. The diagram given here is the standard ECG of a normal person. The P-wave represents the

1. beginning of the systole
2. end of systole
3. Contraction of both the atria
4. initiation of the ventricular contraction

Q.

Draw a standard ECG and explain the different segments in it.

Q.

ECG depicts the depolarisation and repolarisation process during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.
(a) Depolarisation of atria
(b) Repolarisation of atria
(c) Depolarisation of ventricles
(d) Repolarisation of ventricles

Q.

Norepinephrine

(i) is released by sympathetic fibers

(ii) is released by parasympathetic fibers

(iii) increases the heart rate

(iv) decreases blood pressure

1. (ii) and (iii)

2. (i) and (iii)

3. (i) and (iv)

4. (ii) and (iv)

Q. T wave in ECG represents which of the following actions of the heart?

1. Depolarisation of the atria
2. Beginning of the signal at SA node
3. Return of the ventricles from excited to normal state
4. Repolarisation of the atria

Q. Intestinal perforation is the characteristic symptom of

1. Pertussis
2. Plague
3. Pneumonia
4. Typhoid

Q.

Which of the following correctly explains a phase/event in the cardiac cycle in a standard electrocardiogram?
(a) QRS complex indicates atrial contraction.
(b) QRS complex indicates ventricular contraction
(c) Time between S and T represents atrial systole.
(d) P-Wave indicates the beginning of ventricular contraction.

Q. Given here is ECG of a normal human. Which one of its components is correctly interpreted?

1. Complex QRS - One complete pulse
2. Peak T - Initiation of total cardiac contraction
3. Peak P and peak R together - Systolic and diastolic blood pressures
4. Peak P - Initiation of left atrial contraction only

Q.

‘P’ wave of ECG occurs before the

1. End of atrial contraction

2. Onset of ventricular ejection

3. Beginning of atrial contraction

4. None of the above

Q. ECG gives the following information:

1. Heart beat rate
2. Electrical activity of the heart
3. PQRST waves
4. All of these

Q. Assertion: Atherosclerosis is a disease characterized by the thickening of arterial walls.
Reason: Deposition of calcium, fat and cholesterol in the arterial wall causes atherosclerosis.

1. If Assertion and Reason both are true and Reason is the true explanation of Assertion
2. If Assertion and Reason both are true but Reason is not the true explanation of Assertion
3. If Assertion is true and Reason is wrong
4. If Assertion is wrong and Reason is true

Q. During QRS wave

1. signals of contraction spread throughout ventricles
2. ventricles return from excited state to normal state
3. none of these
4. signals of contraction spread throughout atria

Q.

How will you interpret an electrocardiogram (ECG) in which time taken in QRS complex is higher?

Q. T-wave in an electrocardiograph represents:

1. Excitation of the atria
2. Depolarisation of the atria
3. Repolarisation of the ventricles
4. Depolarisation of the ventricles

Q.

What exactly is an MRCP test? What are they looking for?

Q. Which of the following correcty explains a phase/event in cardiac cycle in a standard electrocardiograph?

1. QRS complex indicates atrial contraction
2. QRS complex indicates ventricular contraction
3. T-wave represents the return of the atria
4. P-wave indicates beginning of ventricular contraction

Q. P wave in ECG represents which of the following actions in the heart?

1. Repolarisation of the atria
2. Depolarisation of the atria
3. Depolarisation of the ventricles
4. None of the above

Q. ECG gives the following information:

1. Heart beat rate
2. Electrical activity of the heart
3. PQRST waves
4. All of these

Q. ‘QRS' complex in an ECG represents:

1. Auricular depolarization
2. Ventricular depolarization
3. Auricular repolarization
4. Ventricular repolarization

Q. During QRS wave

1. signals of contraction spread throughout atria
2. signals of contraction spread throughout ventricles
3. ventricles return from excited state to normal state
4. none of these

Q. At which point of ECG, the initiation of ventricular contraction is marked by

1. P
2. Q
3. T
4. S

Q.

Which of the following correctly explains a phase/ event in cardiac cycle in a standard electrocardiogram?

1. QRS complex indicates atrial contraction.

2. QRS complex indicates ventricular contraction.

3. Time between S and T represents atrial systole

4. P-wave indicates beginning of ventricular contraction.

Q. P wave depicts:

1. Atrial contraction
2. Depolarization of atria
3. Activation of SAN
4. All of these

Q. Match the following:

$\begin{array}{cc}\text{A. P wave}& \text{i) depolarisation of atria}\\ \text{B. T wave}& \text{ii) repolarisation of ventricles}\\ \text{C. QRS wave}& \text{iii) depolarisation of ventricles}\end{array}$

1. a-i, b-ii, c- iii
2. a-ii, b-iii, c-i
3. a-iii, b-i, c-ii
4. a-iii, b-ii, c-i

Q. P wave depicts:

1. Atrial contraction
2. Depolarization of atria
3. Activation of SAN
4. All of these

Q. Define matter wave.

Q. P wave in ECG represents which of the following actions in the heart?

1. Repolarisation of the atria
2. Depolarisation of the atria
3. Depolarisation of the ventricles
4. None of the above