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Biomedical Instrumentation Practice Test: Biomedical Recorders
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Avg score: 76% Most missed: “Blood in ___________ must be made similar to arterial Blood in composition.”
Biomedical recorders are used in biomedical instrumentation, which is the engineering of devices and mechanics that measure, evaluate, and treat biological systems. Biomedical instruments monitor and analyze human body parameters, such as electrophysiological signals. These instruments are used in healthcare settings for diagnosing diseases, monitoring patient vital signs, delivering therapies, and conducting research.  Recording systems are of two types: analog recorders and digital recorders. Analog recorders can be further classified as graphic recorders and oscillographic. A graphic... Show more
Biomedical Instrumentation Practice Test: Biomedical Recorders
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25 Questions

1. For discrete blood samples, a spectrophotometric measurement of oxygen saturation can be made by which method?
2. Who brought out the difficulties in the extraction of useful information from backscattered light intensity from human tissue?
3. When will be R-R interval declared premature?
4. The blood is a poor conductor of electricity.
5. Which of the following instrument is used to measure the oxygen saturation level of blood in localized areas of oxygen?
6. For estimating SO2, usually reflectance at ________ wavelengths are used.
7. In the whole body, there are about 25 billion erythrocytes and they are constantly being destroyed and replaced at a rate of about 9000 million per hour.
8. The percentage of cells in the blood is called _____________
9. How many LED’s are used in Pulse oximeter probe?
10. The percentage of functional haemoglobin combined with oxygen is expressed as ______
11. Blood in ___________ must be made similar to arterial Blood in composition.
12. Merrick and Hayes (1976) describe details of a __________ oximeter which enables the measurement of oxygen saturation of the blood.
13. Liquid part of blood is __________
14. The steep, large amplitude variation of the QRS complex is the obvious characteristics to use and this is the function of the R wave detector.
15. What is time taken for the ear to become fully dilated after ear unit has been placed?
16. What is incorporated in sensor to warm the tissue so as to increase local blood flow?
17. The ideal membrane should possess ___________ to water.
18. By keeping the ear warm, maximum vasodilatation is achieved.
19. Which of the following option is correct in terms of size?
20. How many wavelengths are utilized by currently available oximeters?
21. Light passing through finger will be adsorbed by ___________
(i) Skin Pigments
(ii) Tissue
(iii) Arteries
(iv) Veins
22. What is used as a light source in ear oximeter?
23. Diameter of erythrocytes is in the range of ___________
24. Which is the final stage in arrhythmia analysis?
25. The reflected light from the skin at wavelengths of 665nm(red) and 935nm(infrared) is detected by ______________