Canadian Health Information Management Association Practice Exam

An example of a biosignal would be:

1. a blood pressure reading.

2. an ECG recording.

3. monitoring the color of a skin lesion.

4. all of the above.

The correct answer is: an ECG recording.

The correct answer is the ECG recording, which serves as a prime example of a biosignal because it directly measures electrical activity of the heart. Biosignals are types of signals that can be measured from the biological systems of living organisms, and they often relate to physiological functions. An ECG (electrocardiogram) captures the electrical impulses that stimulate heartbeats, providing data that is crucial for assessing cardiac health. This signal is monitored over time and can be used to diagnose various heart conditions, making it a fundamental tool in health assessments. In contrast, while a blood pressure reading does reflect physiological data, and monitoring the color of a skin lesion can provide clinical insights, these are not classified under bio-signals in the same way as an ECG. The former quantifies cardiovascular status at a specific moment, whereas the latter is more subjective and does not provide direct measurement of a physiological signal. Hence, the ECG stands out as a clear example of a biosignal in the scope of health information management.