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process by which a graphic pattern is created from the electrical impulses generated within the heart as it pumps
Pulmonary Function Tests (PFTs)
measure and evaluate a patients lung capacity and volume
is a test used to measure breathing capacities . an instrument called a spirometer measures the air taken in by and expelled from the lungs
Peak Expiratory Flow rate ( Pefr)
is a measurement taken to determine the amount of air that can be quickly forced from the lungs. A peak flow meter is often used to obtain a PEFR
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