Unit 4 Test RCT
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| Pneumatic device to deliver a series of pressurized gas miniburts at rates of 100 to 225 cycles per minute to the respiratory tract, usually via mouthpiece. (total tx time of 20 mins) | Intrapulmonary Percussive Ventilation (IPV)
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| Small gas volumes are alternately injected into and withdrawn from the vest by the air-pulse generator at a fast rate, creating an oscillatory motion against the patient’s thorax. | High Frequency Chest Wall Oscillation
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| 30 minute therapy sessions at freq between 5 Hz and 25 Hz. Depending on need and response one to six therapy sessions per day | High Frequency Chest Wall Oscillation
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| A non-stretch inflatable vest that covers the patient’s entire torso | Vest Airway Clearance System
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| Rapid vibratory movement of small volumes of air back and forth in the respiratory tract. At high frequencies (12 to 25 Hz) these oscillations act as a physical “mucolytic”, enhancing cough clearance of secretions. | Oscillation
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| Airway application for HFCWO? | Flutter valve & Intrapulmonary percussive ventilation (IPV)
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| External application for HFCWO? | vest
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| Produce PEP with oscillations in the airway during expiration. | Airway Oscillating Device
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| Combines the techniques of EPAP with high-frequency oscillations (HFOs) at the airway opening -Patients can control the pressure by changing their expiratory flows. Changing the angle of the device alters the oscillations | Flutter Valve
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| A type of therapy that clears secretions? | PEP
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| Involves active expiration against variable flow resistance.Helps move secretions into larger airways by improving ventilation of under aerated segments & by preventing airway collapse during expiration | PEP/Vibratory PEP
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| Devices apply positive pressure of 30 to 50 cm H2O to airway for 1 to 3 seconds Device then abruptly reverses airway pressure to –30 to –50 cm H2O and maintained 2 to 3 sec. | MIE - Mechanical insufflation-exsufflation "cough assits"
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