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Sjerry85
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Body Plethysmograph
Instrument used to measure lung volumes (FRCpleth) and airway resistance (Raw); consists of an enclosed booth or chamber in which the patients sits to measure changes in lung volume indirectly
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Bronchial Challenge
Bronchial provocation test; used to assess airway response after a challenge to the airways, particularly useful in measuring response to bronchodilator medications; also known as bronchochallenge
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Capnography
The measurement and/or recording of exhaled carbon dioxide (CO2)
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Diffusing Capacity
Measure of the uptake of small volumes of carbon monoxide (CO); referred to as DLCO or DCO
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Edema
Leakage of fluides from blood vessels caused by imbalance in pressures
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Forced Vital Capacity (FVC)
The maximum volume of gas that can be expired when the patient exhales as forcefully and rapidly as possible after a maximal inspiration
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Hypercapnia
Higher than normal level of carbon dioxide; usually greater than 45 mmHg in arterial blood
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Hyperventilation
Ventilation in excess of CO2 production resulting in respiratory alkalosis
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Hypoventilation
Inadequate ventilation to remove CO2 resulting in respiratory acidosis
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Maximal Expiratory Flow-Volume (MEFV)
A curve that shows flow as the patient exhales from maximal inspiration (TLC) to maximal expiration (RV)
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Maximal Voluntary Ventilation (MVV)
The volume of air that can be inspired and expired during a specific interval with rapid, forced breathing
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Oximetry
The measurement, either directly or indirectly, of the oxygen saturation of the blood
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Pulse Oximetry
Estimation of arterial saturation by analysis of light absorption of blood pulsing through a capillary bed (finger or earlobe)
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Resting Energy Expenditure (REE)
The caloric needs of the body estimated from oxygen consumption and carbon dioxide production, usually expressed in kilo-calories per 24 hours
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Spirometry
The classic pulmonary function test, which measures the volume of air inspired or expired as a function of time.
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Vital Capacity
This test simply measures the largest volume of air that can be moved into or out of the lungs.
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