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Questions and Answers
What type of error occurs when a patient is diagnosed to be free of a particular disease when they actually have it?
What type of error occurs when a patient is diagnosed to be free of a particular disease when they actually have it?
- False negative error (correct)
- Diagnostic error
- False positive error
- Measurement uncertainty
What is one way to reduce diagnostic errors and measurement uncertainties?
What is one way to reduce diagnostic errors and measurement uncertainties?
- Relying on a single measurement
- Ignoring the results
- Using unreliable instruments
- Repeating the measurement (correct)
What type of measurements does a physician take before deciding how to treat a patient?
What type of measurements does a physician take before deciding how to treat a patient?
- Only machinery measuring instruments
- Routine measurements and other required tests (correct)
- Only laboratory investigations
- Only body signal investigations
What is an example of a routine measurement?
What is an example of a routine measurement?
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Why is calibration of instruments important?
Why is calibration of instruments important?
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Study Notes
Diagnostic Errors
- Inaccurate measurements can lead to two types of errors:
- False negative error: when a patient is diagnosed as free of a disease they actually have
- False positive error: when a patient is diagnosed with a disease they do not have
Reducing Diagnostic Errors
- Ways to reduce errors and uncertainties:
- Researching causes of misleading laboratory test values
- Repeating measurements
- Care in taking measurements
- Developing new clinical tests
- Improving instrumentation
- Using reliable instruments
- Calibrating instruments relative to standards or already calibrated instruments
Medical Measurements
- Measurements needed before treatment:
- Routine measurements: • Body temperature • Pulse rate • Blood pressure • Body weight
- Additional required tests based on the patient's case, including: • Laboratory investigations • Body signals investigations • Machinery measuring instruments
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