NSG 550: Exam 2| Questions and answers, 100% Correct| Latest

NSG 550: Exam 2| Questions and answers, 100% Correct| Latest Pulmonary Function Tests/Spirometry: What can cause it to vary? Age Sex Height Weight Pulmonary Function Tests/Spirometry: Used to evaluate Peop eval of lungs and pulmonary reserve response to bronchodilator therapy differentiate between restrictive and obstructive chronic pulmonary disease Determine capacity of lungs Inhalation allergy tests Pulmonary Function Tests/Spirometry: What tests do they include? Spirometry Airflow measurement Lung volume Lung capacity Forced Vital Capacity (FVC) Amount of air that can be forcefully expelled from a maximally inflated lung position. What does a reduced forced vital capacity suggest? Obstructive and restrictive pulmonary diseases. Forced expiratory volume in 1 second (FEV1) Volume of air expelled during the first second of FVC What are the findings of FEV1 in obstructive pulmonary disease? Airways are narrowed Resistance to flow is high Numbers of FEV1 are less than predicted because not so much air can be expelled in 1 second. FEV1: What are the findings in restrictive lung disease? Decreased because amount of air originally inhaled is low, instead of airway resistance. What is a normal FEV1/FVC ratio in restrictive lung disease? 80%. What is a normal FEV1/FVC ratio in obstructive lung disease? Less than 80% Under what condition will the FEV1 value reliably improve? With bronchodilator therapy with a spastic component to obstructive pulmonary disease exists. Normal results of Spirometry Greater than 80% of expected value Airflow rate: When is it considered diminished? Less than 60% of normal. What helps to increase airflow rate and by how much? 20% by with bronchodilator Diagnosis of COPD requires what? Demonstration of persistent airflow limitation based on spirometry testing. After bronchodilator, FEV1/FVC of less than 70%. Classification of COPD severity is based on what? Assessment of spirometry testing at regular intervals COPD Risk factors Smoking Pollution exposure Genetic predispostion How does COPD compare with asthma?