Pulmonary Function - HCCRT
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| IC - Inspiratory Capacity | Volume of air that is inhaled after a normal exhalation. (Vt=IRV)
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| IRV - Inspiratory Reserve Volume | Maximum volume of air that can be inhaled after a normal tidal volume. inhalation.
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| ERV - Expiratory Reserve Volume | Maximum volume of air that can be exhaled after a normal tidal volume.
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| FRC - Functional Residual Capacity | Volume of air remaining in the lungs after a normal exhalation. (ERV + RV)
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| TLC - Total Lung Capacity | Maximum amount of air that the lungs can hold.
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| Capacity | 1 or more volumes combined
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| Vt - Tidal Volume | Volume of air that normally moves into and out of the lungs in one calm breath.
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| Obstructive Lung Disease | RV TLC & FRC - Increase IRV & IC - Decrease
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| Restrictive Lung Diseases | All volumes & capacities decrease.
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| RV - Residual Volume | The amount of air remaining in the lungs after a maximal exhalation.
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| VC - Vital Capacity | Maximal volume of air that can be exhaled after a maximal inspiration.
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| SVC - Slow Vital Capacity | Diagnostic for restrictive lung disease.
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| FVC - Forced Vital Capacity | Diagnostic for obstructive lung disease.
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| FEV 1 | The volume of gas that can be exhaled after 1 second of time. Most used from an FVC. Normal is 83%
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| FEF - Forced Expiratory Flow 25%-75% | Reflects medium to small airways. Normal is approx. 4.5 L/Sec. Decreased in Obstructive Diagnosis
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| FEF - Forced Expiratory Flow 200- 1200 | Reflects condition of larger airways. "Effort Dependent"
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| MVV - Maximum Voluntary Ventilation | Deep and Fast breathing for 15 seconds. Normal ranges: Men 170 L/min Women 110 L/min
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| Flow-Volume Loop | Forced Vital Capacity (FVC) manuever followed by a forced inspiratory volume manuever.
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| Flow-Volume Loop Important Measurements | PEFR, PIFR, FVC, FEVt, FEV1/FVR Ratio, FEF 25%, FEF 50%, FEF 75%
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| DLco - Diffusion Capacity of Carbon Monoxide | Test that measures the amount of CO diffused across the A-C Membrane.
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| DLco - Diffusion Capacity of Carbon Monoxide Normal Ranges | Normal Range Male = 25 ml/min/mmHg Identifies a diagnosis of AC Membrane thickening.
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| MIP - Maximum Inspiratory Pressure Normal Range | Normal range (NIF) Males - 125 cmH2O Females - 90 cmH2O
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| MEP - Maximum Expiratory Pressure Normal Range | Normal range Males - 230 cmH2O Females - 150 cmH2O
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| NIF - Negative Inspiratory Force | The ability to take a deep breath and to generate a cough strong enough to clear secretions. The patient’s should be at least –20 cm H20.
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| SVC Acceptable Value - Bedside Test | Acceptable value = 20ml/kg IBW
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| NIF Acceptable Value - Bedside Test | Acceptable Value = -20 cmH2O or >
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| VT Acceptable Value - Bedside Test | Acceptable Value = 7-9 ml/kg IBW
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| PF Acceptable Value - Bedside Test | Acceptable Value = 300 lpm or >
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| Spirometer | An apparatus for measuring the volume of air inspired and expired by the lungs. It records the amount of air and the rate of air that is breathed in and out over a specified period of time.
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| Respirometer | A device used to measure the rate of respiration of a living organism by measuring its rate of exchange of oxygen and/or carbon dioxide.
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| NIFometer | A disposable single patient monitor that indicated for use in measuring Negative Inspiratory Force.
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| FEV1 Normal Value | 83% Normal Value
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