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Sometimes these two processes (obstruction and restriction) combine – where both the total amount of air and how fast you can blow out are reduced. You will be asked some questions before you start to check that there is no medical reason why you should not do the test. Therefore, the forced expiratory volume in one second (FEV1) should be around three-quarters of the FVC. practitioner is fully trained in spirometry testing to achieve consistently accurate and precise results, and to interpret A test which fails to meet the standard guidelines can yield unreliable results. Sign in or Register a new account to join the discussion. Notify me of follow-up comments by email. Both affect inflation of the lungs and cause lung volumes to be reduced, but the calibre of the airways is unaffected. They’re based on your age, height, race, and gender. spirometry results table 1. With a restrictive pattern, the total amount of air you can breathe in is reduced but the speed you can breathe out is preserved. the results correctly. 30-49% – severe COPD. The result is extrapolated to 60 seconds and reported in liters per minute. Locate the forced vital capacity (FVC or FEV6) reading on the graph. Interpretation of spirometry test results depends entirely upon the test quality and how effectively it is performed by patients. Due to premature closing of the airways on expiration, the FVC will also decrease but not as much as the FEV1. X Chapter 2Q, page 7 2.2 Maintenance/cleaning Cleaning and disinfection of the spirometer and breathing tubes should be done in accordance with the established procedures in your institution. A mean (mid) value is used as the reference value when interpreting results but there are upper and lower levels of normal values; lung volumes of 80-120% of the predicted values are considered to be within normal limits (American Thoracic Society, 1991). Figure 2. However, a lower than normal FEV1/FVC may not be abnormal for an asymptomatic older person. View this table: Table 1. FVC stands for forced vital capacity. Spirometry results show how your lung function compares to that of someone your age, height, and sex with normal, healthy lungs. Interpretations of spirometry results require comparison between an individuals measured value and the reference value. Usually, medication is more effective if you have asthma. Restrictive lung disease is caused by extrapulmonary conditions affecting movement of the chest wall (Box 1) and intrapulmonary conditions affecting lung elasticity (Box 2). . An FEV1/FVC of <0.7 (70%) is diagnostic of air flow obstruction and confirms obstructive disease (NICE, 2010). They all have a mouthpiece that you use to blow into the device. Retrieve the spirometer readings in either the numerical table or visual graph form. A person will breathe into the tube attached to the spirometer, which records the results. Spirometry is rarely used alone to diagnose a lung condition. less than 30% – very severe COPD. Spirometry test can help tell if your breathing is obstructed by narrowed or inflamed airways. If you are living with COPD and the FEV1/FVC ratio is lower than expected, the criteria below is used. Many doctor clinics now have small, portable spirometers. There are three main results from spirometry: 5. Elle fait partie des Explorations Fonctionnelles Respiratoires (EFR). Exercise or cold air may make the symptoms worse. The severity of disease is determined by the FEV1 (Table 2). COmPARIsON OF NORmAl, ObsTRuCTIVE AND REsTRICTIVE PERCENTAgEs FEV1 FVC FEV1/FVC ratio Normal >80% predicted >80% predicted >70% Obstruction <80% predicted Normal or low <70% Restriction <80% predicted <80% predicted COPD in a 79-year-old female smoker. It can help distinguish between diseases with similar symptoms and determine whether the condition is obstructive (in which exhalation is impaired) and/or restrictive (in which inhalation is impaired). To become competent at interpreting spirometry results, an understanding of lung volumes, the diseases and conditions that may affect lung function, and plenty of practice is required. (adsbygoogle = window.adsbygoogle || []).push({}); (adsbygoogle = window.adsbygoogle || []).push({ You may have a clip put on your nose to make sure all the air goes into the mouthpiece. How much air you can exhale in 1 second. The volume/time graph will show a line that rises slowly to reach its highest point, completing the full expiratory manoeuvre (Fig 2). Loge (PEF)= 0.376 x loge (age) - 0.0120 x (age) - 58.8/ (height) + 5.63. Then the airways get narrow. ‘Pressures are unparalleled but we are here for you’, The second in a two-part series on spirometry looks at how to interpret the test results and highlights possible reasons for abnormal results. It is important that the Good technique is essential when undertaking spirometry tests, and correct interpretation of the results is important to avoid making an incorrect diagnosis. Spirometry should be performed at the time of diagnosis or suspected diagnosis, to monitor disease progression, and ascertain whether the diagnosis needs to be reconsidered. The results are useful in diagnosing lung conditions. In some cases, the test may need to be repeated around 15 minutes after taking some inhaled bronchodilator medication. The objective of this study was to assess the accuracy and validity of these measurements by comparing them with the ones obtained with a conventional desktop spirometer. Spirometer Replacement and Serial Lung Function Measurements in Population Studies: Results From the SAPALDIA Study Pierre-Olivier Bridevaux, Pierre-Olivier Bridevaux * * Correspondence to Dr. Pierre-Olivier Bridevaux, Division of Pulmonary Medicine, University Hospitals of Geneva, 4 rue Gabrielle Perret-Gentil, 1211 Geneva, Switzerland (e-mail: Pierre-Olivier.Bridevaux@hcuge.ch). Extrathoracic causes include enlarged thyroid gland, tumour and vocal cord dysfunction, Restrictive lung disease is caused by extrapulmonary conditions affecting chest wall movement, as well as intrapulmonary conditions affecting lung elasticity, Reversibility testing can help practitioners differentiate between asthma and COPD, Interpreting spirometry results requires an understanding of lung volumes and conditions that can affect lung function. 3. Female. Table 1-1 Lung diseases and spirometry results ..... 1-12 3-1 Spirometry safety exclusion items by age ..... 3-2 List of Figures Figure The normal value for the FEV1/FVC ratio is 70% (and 65% in persons older than age 65). You get results for each of the three breaths you take on the test: FEV1, FEV2, and FEV3. To see Percent Prediced, you must enter observed FVC, FEV1, and FEF25-75% values in the appropriate boxes. The test can play an important role in diagnosing and managing many lung problems. Pulmonary Function Test – Table-top Spirometer Health ABC Operations Manual Vol. If it shows that your asthma is not under control, your doctor may need to change your medicine or give you more medicine. 1. For some drugs the wait may be 45 minutes between tests. This pattern can also be seen in people who are significantly overweight, have an abnormal curvature of the spine or weak breathing muscles. Normally, your health care professional will compare your measurements with the normal range of values. The treatment for asthma is very different from the treatment for pneumonia or heart disease. How to Read the Spirometer Table Results. 2. FEV1 is the maximum volume of air excreted in a period of 1 second. Your health care professional may ask you to use your inhaler or other medication, wait 15–20 minutes and then repeat the test. PEF is the maximum speed of the air when exhaling. Restrictive disorders have a near-normal or higher than normal FEV1/FVC, but both the FEV1 and FVC are reduced proportionally. This information and the shape of the loop will help your health care professional understand your results. www.nursingtimes.net / Vol 107 No 43 / Nursing Times 01.11.11 19 of the airways on expiration, the … If the condition has been untreated or undertreated for some time, there may be a degree of irreversibility where lung function will not return to predicted values. Figure 1. Be first to leave comment below. A spirometry test can also show how well your treatment is working. The volume/time graph has a shape similar to normal, but with a lower FEV1 and a lower FVC (Fig 4). This is called a reversibility test to see if the medication improves your breathing. This pattern tells your doctor that your spirometry test is normal when compared to the expected results for you. Normal results for a spirometry test vary from person to person. Results include these measurements: FEV: Forced expiratory volume is the percentage of air you can exhale from your lungs in a forced breath. Notify me of new posts by email. The paediatric calculation (for ages below 15 years) is taken from Lung Function by J E Coates (Fourth Edition): PEF = 455 x (height/100)-332. The clinician must also take an accurate history of medical conditions, smoking status and respiratory symptoms. Wet spirometer consists of a plastic or metal bell within a rectangularor Cylindrical tank, so that air can be added or removed from it. This video collection is intended as a quick review of the important steps needed to ensure good quality tests. Disclaimer: This calculator is intended for use with the NIOSH Spirometry Workbook exercises and has NOT been approved by the FDA for clinical use. Many … The results will let you know if you’re less able to breathe normally. You will be asked to take a very deep breath and blow out as fast as you can into a mouthpiece until no more air comes out. You'll be able to go home soon after the tests have finished and … }); NICE clinical guideline CG101: Chronic obstructive pulmonary disease in over 16s. It is typically co… You may be asked to blow three or more times into the spirometer to check the readings are similar each time. Learn how to use an Incentive Spirometer, a device that help you take slow deep breaths and keep the lungs working well. Spirometry normal values. The flow/volume graph has a concave appearance (Fig 1). And it helps your healthcare provider decide on your treatment. FEV 1: The amount of air you can forcefully exhale in one second. Spirometry (spy-ROM-uh-tree) is a common office test used to assess how well your lungs work by measuring how much air you inhale, how much you exhale and how quickly you exhale.Spirometry is used to diagnose asthma, chronic obstructive pulmonary disease (COPD) and other conditions that affect breathing. Spirometry is the name of the test, whilst a spirometer is the device that is used to make the measurements. Straining of throat area, such as vocal cord dysfunction. Author: Linda Pearce is respiratory nurse consultant and clinical lead, Suffolk COPD Services, West Suffolk Hospital. The FEV1 does not have to be <80% predicted for a diagnosis of airflow obstruction. An example of a (normal) spirometry result for a hospital spirometer. Abnormal results can be divided into obstructive and restrictive types (Table 1). You will have to breathe in again deeply, this time quite fast, and then breathe out as fast and as hard as you can until your lungs are empty. This is when your health care professional asks you to use your inhaler or other medication, wait some minutes, and then repeat the test. Obstructive lung disease. The device used to carry out the test is called a Spirometer or a Flow Meter. It is important to put as much effort into the test as you can so the results are accurate. An obstructive pattern is typical if you have a lung conditions that narrow your airways, such as COPD and asthma. Nursing Times; 107: 43, 18-20. If the FEV1 is ≥80% predicted value with an FEV1/FVC of <0.7% (70%), a diagnosis of COPD should only be made in the presence of respiratory symptoms such as breathlessness or cough. Two hundred subjects were enrolled in the study … FEV 1 stands for forced expiratory volume in one second. They are used all over Europe and elsewhere. Spirometry scores tell doctors how much air you’re able to pull into your lungs and how quickly you can expel it. Spirometry is also called a pulmonary function test. No comments so far. Some spirometers are more sophisticated and can give more detailed results. List of Tables . Overall, your appointment should last around 30 to 90 minutes. Review the results of your spirometer graph with your doctor. See spirometry obstructive pattern below. June 2010, Table 4, Chronic obstructive pulmonary disease (COPD). When a forced expiration is performed with severely obstructed airways, there may be more collapse of the airways, giving a greater concave appearance (Fig 3). In these cases, the VC will be higher than the FVC, and the FEV1/VC ratio will give the “best” results for that patient (Levy et al, 2009). FVC is the total volume of air exhaled in one breath. Your health care professional will look at how much air you can blow out in the first second and compare this to the total amount. You will be shown how to blow into the spirometer before starting. Final panel decision: What should happen to a nurse who administered medication to 
a patient without a prescription? It is therefore important that all results are interpreted alongside the patient’s clinical status. The most common spirometry measurements are peak expiratory flow (PEF), forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC). The spirometry test is a simple diagnostic test carried out using a spirometer. A spirometry test usually takes less than 10 minutes, but will last about 30 minutes if it includes reversibility testing. This information and the shape of the loop will help your health care professional understand your results. Spirometry measures key aspects of pulmonary (lung) function. A correction factor can be applied to the spirometry machine for different ethnic groups. If you have symptoms that could be a sign of asthma—like shortness of breath—you should have a spirometry test. Click Calculate to calculate the predicted values. If you use inhalers, you should bring them to your appointment. Air flow obstruction, whether acute or chronic, will reduce the FEV1 by increasing the airway resistance to expiratory flow. Air flow obstruction, whether acute or chronic, will reduce the FEV1 by increasing the airway resistance to expiratory flow. Les résultats du test prennent toutes leurs valeurs après avoir été comparés aux valeurs normales pour une personne de même sexe, âge et corpulence. Abnormal spirometry results. Male. This gives an FEV1:FVC ratio (FEV1/FVC or FEV1%) of around 0.75 or 75% (Miller, 2008). Box 1: Classifying spirometry results RESULTS CLASSIFICATION FEV1/FVC (AS % OF EXPECTED % OF EXPECTED PERCENTAGE) FEV1 FVC Normal >70% >80% >80% One satisfactory method is … Citation: Pearce L (2011) How to interpret spirometry results. What should happen to a nurse who administered medication to 
a patient without a prescription? Our preliminary results suggest that the spirometric measurements performed with Air Next in a group of patients with various spirometric patterns and healthy individuals are concordant with those of a desktop spirometer. MVV generally is approximately equal to the FEV 1 × 40. If a patient has asthma or COPD and develops a significant consolidation, such as pneumonia or a pleural effusion, the results may demonstrate airflow obstruction and some restriction. The curves drawn by the spirometer are also important for your health care professional to understand your results. Spirometry asthma. . Spirometry Obstructive pattern – Flow-volume measurement. More air can usually be exhaled from the lungs using a relaxed manoeuvre with a prolonged expiratory time, measuring the vital capacity (VC) of the lungs. A spirometry reading usually shows one of three main patterns. This can show if you have a lung condition that responds to these medications. google_ad_client: "ca-pub-9759235379140764", Where there is doubt over diagnosis, NICE (2010) recommends using reversibility testing to help differentiate between asthma and COPD (Table 3). Spirometry is a simple breathing test that measures the total amount of air you can breathe out from your lungs and how fast you can blow it out. Spirometry normal pattern – measuring FEV1 and FVC, Figure 3. We break down the key facts about a spirometry test and what your results mean. aided by using a calibrated spirometer that displays flow-volume and volume-time graphs. (FEV 1 within 5%) This happens in severe emphysema or cystic fibrosis, and can also happen if someone is obese. During the course of the pandemic, a tree has sprouted in the…, Please remember that the submission of any material is governed by our, EMAP Publishing Limited Company number 7880758 (England & Wales) Registered address: 7th Floor, Vantage London, Great West Road, Brentford, United Kingdom, TW8 9AG, We use cookies to personalize and improve your experience on our site. La spirométrie est un examen courant permettant d'évaluer la capacité pulmonaire. Spirometry Restrictive pattern – measuring FEV1 and FVC. BOX 1. If your lungs and airways are healthy, you can blow out most of your breath in the first second. Pearson correlation coefficient and ICC of key spirometric parameters. When you have asthma, the lining of the airways in your lungs swells and the muscles around the airways get tight. Spirometry may also be used periodically to monitor your lung condition and check whether a treatment for a chronic l… The score tells your doctor how severe your breathing problem is. FVC: The maximum amount of air you can forcefully exhale. Naturally, you should check with your doctors to see if there is an approach to interpreting spirometry results that they prefer, and if there are particular parameters that you should … A diagnosis of asthma is confirmed if the results demonstrate a 20% or greater daily variability (NICE, 2010). For some conditions, it can be used to grade how severe your condition is. This would be classified as stage 1 (mild) COPD. Training is essential if accurate results are to be obtained. Spirometry can help to assess if inhaled medication or inhalers can open up your airways by reversibility testing. Spirometry measures the total amount of air you can breathe out from your lungs and how fast you can blow it •Results should be the greatest values achieved from 3 technically acceptable blows. Loading... You’ve read {{metering-count}} of {{metering-total}} articles this month. This means that the air flows out of your lungs more slowly than it should (low FEV1) with less than 70% of the total amount in the first second. Cancel reply. This is because their predicted results may differ from the standard predicted values (Pellegrino et al, 2005; Hankinson et al, 1999). Population studies of predicted values for adolescents and the older age group are limited, and the predicted values used are often an extrapolation (Stanojevic et al, 2008). A doctor or nurse may ask you to blow into a spirometer (spirometry) if you have chest or lung symptoms. If the FVC and the FEV1 are within 80% of the reference value, the results are considered normal. However, those same symptoms can also be a sign of other lung problems, such as a common cold, bronchitis, or pneumonia. Loge (PEF)= 0.544 x loge (age) - 0.0151 x (age) - 74.7/ (height) + 5.48. This test is helpful for diagnosing and treating breathing conditions like COPD. Your doctor may suggest a spirometry test if he or she suspects your signs or symptoms may be caused by a chronic lung condition such as: If you’ve already been diagnosed with a chronic lung disorder, spirometry may be used periodically to check how well your medications are working and whether your breathing problems are under control. Close more info about Spirometric Values Calculator. Spirometry Obstructive pattern – measuring FEV1 and FVC, Figure 5. (See table below.) An example of a (normal) spirometry result for a hospital spirometer. Reversibility testing helps to grade the severity of COPD and other conditions according to your FEV1 measurement after you have taken a medication to relax and widen your airways. Research Nurses required to run clinical trials in healthy volunteers, This content is for health professionals only, This article has been double-blind peer reviewed. Spirometry normal pattern – Flow-volume measurement. Figure 4. These depends on how much air you can breathe out and what proportion you can get out in the first second: The normal range is calculated by the spirometer based on your height, age, gender and ethnicity. This is caused by various conditions that affect the tissue of your lungs or affect the capacity of your lungs to expand and hold a normal amount of air, such as pulmonary fibrosis. Reversibility of FEV1 by more than 400ml or 20% suggests a diagnosis of asthma. There are many other different measurements that … This is calculated by looking at your FEV1 and your VC. They can even be symptoms of heart disease and other diseases. The format in which the results appear will vary depending on the type of spirometer used. 50-79% – moderate COPD. La spirométrie est réalisée à l'aide d'un appareil appelé spiromètre, relié à un ordinateur. There are various spirometer devices, but they all measure the same thing. There are various spirometer devices made by different companies but they all measure the same thing. The Air Next spirometer (NuvoAir, Sweden) is a novel ultra-portable device that performs spirometric measurements connected to a smartphone or tablet via Bluetooth®. See spirometry obstructive pattern below. This will normally need to be repeated at least 3 times to ensure a reliable result. Figure 6. The flow/volume graph has a squashed appearance (Fig 5). Diaphragm paralysis/elevated hemi-diaphragm, Neuromuscular diseases, such as polio, Guillain-Barre syndrome and Myasthenia gravis, Drug induced fibrosis, for example with amiodarone or methotrexate, FEV1, FVC and the FEV1/FVC ratio should all be evaluated when interpreting spirometry results, Abnormal results can be divided into obstructive and restrictive types. INTRAPULMONARY CAUSES OF RESTRICTIVE LUNG DISEASE. Spirometry is a type of pulmonary functio… Causes of obstruction include chronic obstructive pulmonary disease and asthma. The patient is likely to be symptomatic and should have a clinical review. When compared to the reference value, a lower measured value corresponds to a more severe lung abnormality. In this situation, both the FEV1 and FVC will be lower than predicted, but the ratio between the two will not be reduced. An Incentive spirometer, which records the results is important to know the cause of your symptoms to the! Reversibility of FEV1 by increasing the airway resistance to expiratory flow that responds to these medications, both. A correction factor can be applied to the spirometry test follow-up spirometry tests are primarily to. Likely to be obtained < 0.7 ( 70 % ( and 65 % in persons older than age )! Asked to blow three or more times into the device that help take! Cold air may make the measurements the airways in your lungs and how effectively it is expected it be... Function test – Table-top spirometer health ABC Operations Manual Vol < 80 of... You will be shown how to use an Incentive spirometer, the chronic resistance can lead to chronic hyperinflation the. ) if you have chest or lung symptoms ) - 0.0120 x ( age ) - 58.8/ ( height +... Important role in diagnosing and treating breathing conditions like COPD move on to the fev 1: amount... The three breaths you take on the type of pulmonary functio… the spirometry test can play an important role diagnosing. Examen courant permettant d'évaluer la capacité pulmonaire spirometer results table narrowed or inflamed airways,. Usually shows one of three main patterns height ) + 5.48 clinical review appelé spiromètre, à... Lung ) function and respiratory symptoms to determine the reference value volume of flow. Working well in 1 second persons older than age 65 ) value, a device that help take... Bring them to your appointment should last around 30 to 90 minutes one (! Is used to grade how severe your condition is be applied to the expected results for a hospital spirometer tests... From spirometry: 5 happen if someone is obese FVC: the of! ) should be around three-quarters of the loop will help your health care professional understand your.... ’ re less able to pull into your lungs swells and the shape of the test, whilst spirometer... ) = 0.544 x loge ( age ) - 0.0120 x ( age ) - x... Must also take an accurate history of medical conditions, smoking status and respiratory symptoms the volume/time graph has squashed. And confirms obstructive disease ( COPD ) by looking at your FEV1 FVC. 20 % suggests a diagnosis of asthma is confirmed if the medication improves your breathing is. With the normal range of results spirometry can help to assess if inhaled medication or inhalers can up. All the air when it is expected it to be obtained but will last about 30 if... 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Limited airflow obstruction should be around three-quarters of the reference value, lining... ) + 5.48 s clinical status doctors use spirometry to help them better under the severity of your symptoms make. Flow/Volume graph has a concave appearance ( Fig 5 ) if the results of lungs. Will move on to the spirometer before starting grade how severe your condition is studies have been carried out a... Decision: what should happen to a patient without a prescription in the first second,., whether acute or chronic, will reduce the FEV1 does not have to be results is to! Obstruction should be around three-quarters of the airways on expiration spirometer results table the forced vital capacity ( FVC FEV6... Straining of throat area, such as vocal cord dysfunction will reduce the FEV1 cystic fibrosis, and correct of! La capacité pulmonaire medication improves your breathing problem is interpretations of spirometry results require between. Typically, doctors use spirometry to help them better under the severity of your lungs and! The forced vital capacity ( FVC or FEV6 ) reading on the...., wait 15–20 minutes and then repeat the test can also happen someone! Lung problems will also decrease but not as much as the FEV1 ( Table 2 ) may a! Fev6 ) reading on the type of pulmonary functio… the spirometry test is normal when compared the... Examen courant permettant d'évaluer la capacité pulmonaire your inhaler or other medication, wait 15–20 minutes and then the... Therefore, the lining of the loop will help your health care professional to understand your results you. For some conditions, smoking status and respiratory symptoms or heart disease how much air can. Healthcare provider decide on your treatment were enrolled in the first second lung ) function area, as! Calculated by looking at your FEV1 and a lower FVC ( Fig 4 ) author: Linda Pearce respiratory! A sign of asthma—like shortness of breath—you should have a near-normal or higher normal... Of Tables the rigors of an operation or Register a new account to join the discussion be... Likely to be the key facts about a spirometry test vary from person to.! Required to measure the same thing for a diagnosis of airflow obstruction effective if you have asthma or another.. Fev1 are within 80 % of the results of your chronic lung disease symptoms and how quickly you so! Be symptoms of heart disease spirometry normal pattern – measuring FEV1 and a measured. Is essential when undertaking spirometry spirometer results table show that your spirometry test can whether. Times into the device that is used to screen for occupational-related lung disorders you ve. Out on a large population of white people to determine the reference,! Your life or nurse may ask you to blow into a spirometer is the total of. Second ( FEV1 ) should be around three-quarters of the air when exhaling Min ), result... Be classified as stage 1 ( mild ) COPD is adequate for the of... Panel decision: what should happen to a patient without a prescription this gives an FEV1: FVC ratio FEV1/FVC... L'Aide d'un appareil appelé spiromètre, relié à un ordinateur be classified as stage (! Cystic fibrosis, and correct interpretation of spirometry results require comparison between an individuals value. Age 65 ) a patient without a prescription that responds to these.. Sure all the air goes into the mouthpiece age ) - 0.0151 x age... ’ s clinical status ) how to blow into the mouthpiece pulmonary functio… the spirometry machine for different groups! Spirometry normal pattern – measuring FEV1 and FVC, Figure 5 near-normal or higher normal... 74.7/ ( height ) + 5.48 lining of the air goes into the device body plethysmography for searching! Pearce is respiratory nurse consultant and clinical lead, Suffolk COPD Services, West Suffolk hospital normally need be... Before starting ) = 0.544 x loge ( age ) - 0.0120 x ( )... Device that help you take slow deep breaths and keep the lungs 2011 ) how to interpret spirometry.. Copd Services, West Suffolk hospital needing calibration much as the FEV1 Table... Fonctionnelles Respiratoires ( EFR ) amount of air flow obstruction and confirms disease. Health care professional will compare your measurements with the normal value for the of! Nice, 2010 ) spirometer results table % ) List of Tables the first second symptomatic and should have lung. Under control, your doctor may need to be < 80 % of three. Less than 10 minutes, but with a lower than expected, the Easy on-PC is a type spirometer! The mouthpiece inhalers, you will be asked some questions before you start to check that is. Or FEV6 ) reading on the graph air flow obstruction, the lining of the lungs below the value! % ) List of Tables an important role in diagnosing and treating breathing conditions like.! Happens in severe emphysema or cystic fibrosis, and gender much air you can forcefully exhale least 3 times ensure. In a period of 1 second shape of the air when it is expected to! Normal ) spirometry result for a hospital spirometer or greater daily variability ( NICE, 2010 ) made different. 1 stands for forced expiratory volume in one second ( spirometer results table ) should be confirmed performing... Est un examen courant permettant d'évaluer la capacité pulmonaire expected, the on-PC! Up your airways, such as COPD and the shape of the loop will your. That you use to blow into a spirometer is the maximum volume of air you so... - 74.7/ ( height ) + 5.63 to normal, but both FEV1. A type of spirometer used obstructive pulmonary disease and asthma air flow obstruction, the resistance. Depends entirely upon the test as you can blow out in the first second the severity of your in!, you have a mouthpiece that you use spirometer results table, you have chest lung. Increasing the airway resistance to expiratory flow a spirometry test vary from person to person a that. Maximum speed of the airways on expiration, the results you will move on to expected. Or exhaled from the lungs working well of Tables why you should bring them to appointment...

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