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Questions and Answers
What is the primary function of the amplifier in sleep study instrumentation?
What is the primary function of the amplifier in sleep study instrumentation?
What is the purpose of sterilization procedures in sleep studies?
What is the purpose of sterilization procedures in sleep studies?
What does a hypnogram graphically represent?
What does a hypnogram graphically represent?
What is characterized by mixed frequency waves and brief arousals during sleep?
What is characterized by mixed frequency waves and brief arousals during sleep?
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What is measured by the EOG channel in a sleep study?
What is measured by the EOG channel in a sleep study?
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What is a common effect of REM sleep on the body?
What is a common effect of REM sleep on the body?
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Study Notes
Instrumentation
- Filter adjusts the frequency range of recorded signals.
- Sensitivity controls the amplitude of the recorded signals.
- Amplifier increases the signal strength for recording.
- Impedance, the resistance of the skin-electrode interface, should be kept low.
- Current, voltage, and resistance are crucial electrical principles for accurate sensor functioning and patient safety.
Sterilization
- Procedures ensure all equipment is free from pathogens before and after each use to prevent infection.
Sleep Study Measurements
- Hypnogram: a graphical representation of the stages of sleep across the night.
- EEG (Electroencephalogram): measures brain wave activity.
- EMG (Electromyogram): measures muscle activity, including bruxism (involuntary grinding or clenching of teeth during sleep).
- EOG (Electrooculogram): measures eye movements.
- ECG (Electrocardiogram): measures heart activity.
- Respiratory channels: measure airflow, effort, and oxygen levels.
Sleep Stage Characteristics
- Transitional Sleep: periods between different sleep stages, characterized by mixed frequency waves and brief arousals.
- REM Sleep:
- Increased brain activity.
- Rapid eye movements.
- Muscle atonia.
- Vivid dreaming.
- Fluctuations in heart rate and breathing.
Apnea
- Apnea Duration Requirement: a cessation of airflow for at least 10 seconds during sleep.
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Description
This quiz covers the principles of biomedical instrumentation, including filter, sensitivity, and amplifier settings, as well as the importance of sterilization procedures to ensure patient safety.
