Free NTA ECG Basics Questions and Answers — Questions and Answers
Question 1: What does ECG stand for?
- Electrocardiac Gradient
- Electrocardiogram (Correct answer)
- Electrical Cardiac Graph
- Electrochemical Gauge
Correct answer: Electrocardiogram
An ECG is a test that measures the electrical activity of the heart to detect abnormalities.
Question 2: What is the primary purpose of an ECG?
- To measure blood pressure
- To record electrical signals in the heart (Correct answer)
- To determine lung capacity
- To monitor blood sugar levels
Correct answer: To record electrical signals in the heart
ECGs detect electrical activity to assess heart health and diagnose issues like arrhythmias or ischemia.
Question 3: What do the P wave, QRS complex, and T wave represent in an ECG?
- Blood pressure variations
- Electrical activity during different phases of the heartbeat (Correct answer)
- Heart rate only
- Lung function
Correct answer: Electrical activity during different phases of the heartbeat
The P wave shows atrial depolarization, the QRS complex indicates ventricular depolarization, and the T wave reflects ventricular repolarization.
Question 4: Which of the following is the normal heart rate range shown in an ECG?
- 30–50 bpm
- 60–100 bpm (Correct answer)
- 100–120 bpm
- 120–150 bpm
Correct answer: 60–100 bpm
A normal resting heart rate for adults typically falls within this range.
Question 5: What does a prolonged QT interval indicate?
- High blood pressure
- Increased risk of arrhythmias (Correct answer)
- Normal heart function
- Increased cardiac output
Correct answer: Increased risk of arrhythmias
A prolonged QT interval can signify an electrical imbalance, increasing the risk of life-threatening arrhythmias.
Free NTA ECG Basics Questions and Answers
What does ECG stand for?