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chapter 49 key term

artifact Any irrelevant object or mark observed when examining specimens or graphic records that is not related to the object being examined—for example, a foreign object visible through a microscope or an erroneous mark on an ECG strip.
cardiac cycle The sequence of contraction and relaxation that makes up a complete heartbeat
depolarization The loss of polarity, or opposite charges inside and outside; the electrical impulse that initiates a chain reaction resulting in contraction.
dysrhythmia An irregularity in heart rhythm; also called arrhythmia.
electrode sensor that detects electrical activity
forced vital capacity (FVC) the greatest volume of air that a person is able to expel when performing rapid forced expiration
Holter monitor An electrocardiography device that includes a microchip or a small cassette recorder worn around a patient's waist or on a shoulder strap to record the heart's electrical activity
pulmonary function test A test that evaluates a patient’s lung volume and capacity; used to detect and diagnose pulmonary problems or to monitor certain respiratory disorders and evaluate the effectiveness of treatment.
rhythm strip An ECG tracing obtained using an electrocardiograph machine
spirometry a test used to measure breathing capacity
hypoxemia low levels of oxygen in your blood
Created by: yari0620
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