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Published byRosamond White
Modified over 4 years ago
PULMONARY FUNCTION TESTING Pat Allan Pulmonary, CC, Sleep, NeuroCC, Int Pulmonary Medicine
Spirometry Lung volumes (plethysmography) Diffusion capacity COPD Asthma Vocal cord dysfunction Fixed airway obsruction Tracheomalacia Interstitial Lung disease Neuromuscular disease PULMONARY FUNCTION TESTING Methacholine Oscillimetry Exhaled nitric oxide Thoracic ultrasound
Requires a cooperative patient Meet American Thoracic Society standards Asthma COPD Vocal cord dysfunction SPIROMETRY
FEV must improve by 12%
Asthma and COPD What do they have in common? Airway obstruction – Lowers FEV1 – Leaves the total amount of air blown out unchanged (FVC) – FEV/FVC ration falls to < 70% – 12% improvement in FEV suggests asthma SPIROMETRY
SPIROMETRY IN COPD
SPIROMETRY Normal flow volume curve
Obstruction on a flow volume curve SPIROMETRY
Flow volume curve SPIROMETRY
Flow volume curve SPIROMETRY
Lung volumes (plethysmography) Diffusion capacity Interstitial Lung disease Neuromuscular disease Pulmonary hypertension LUNG VOLUMES & DIFFUSION CAPACITY
V 1 =V box P box /P 1
Low total lung volume lung volumes (restrictive lung disease) – Interstitial lung disease – Neuromuscular disease – Obesity Residual volume – ILD – normal – NM disease – increased – Obesity – decreased Inspiratory capacity – Low in neuromuscular disease LUNG VOLUMES
Measures carbon monoxide diffusion Low – Any pulmonary vascular disease pHTN, CHF, PE – Any parenchyaml destructive disease (COPD or ILD) High – Fresh hemoglobin in the alveoli DIFFUSION CAPACITY
EXHALED NITRIC OXIDE
THIS OFFICIAL CLINICAL PRACTICE GUIDELINE OF THE AMERICAN THORACIC SOCIETY (ATS) WAS APPROVED BY THE ATS BOARD OF DIRECTORS, MAY 2011
DYSPNEA PFT/FVL/NO OSCILLOMETRY METHACHOLINE THORACIC US ECHO OR CT IMAGING
Pulmonary Function Testing
Pulmonary Function Tests
Lungs Function Tests .. Or Pulmonary Function Tests (PFTs)
Pulmonary function & Respiratory Anatomy
Physiology Lab Spirometry
Spirometery. Lung Volumes 4 Volumes 4 Capacities Sum of 2 or more lung volumes IRV TV ERV RV IC FRC VC TLC RV.
Respiratory Volumes Used to assess a person’s respiratory status
2005 PPC Lectures Series: Pulmonary Function Tests Kimberly Otsuka, M.D. Pediatric Pulmonary Fellow September 19, 2005.
RESPIRATION Dr. Zainab H.H Dept. of Physiology Lec.5,6.
Brief Summation of Pulmonary Function Tests Useful Websites / References.
Respiratory function tests
Lung Volumes Inspiratory Reserve Volume:
Respiratory Function Test Department of internal medicine Chen Yu.
Respiratory Function Tests Fiona Gilmour SHO 03/06/04.
Pulmonary Volumes and Capacities (Spirogram)
1 Mosby items and derived items © 2011, 2006 by Mosby, Inc., an affiliate of Elsevier Inc. Chapter 3 Pulmonary Function Study Assessments Pulmonary Function.
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