Larger studies are required to validate this finding. Besides, we developed tools based on the data from this study and tested their accuracies in the same data. This is likely to provide good internal validity but poor external validity.
Hence, these tools need to be tested in independent larger studies. Also, many patients with COPD do not have any symptom and are hence, likely to be missed using these tools. However, in real-life clinical practice, where reporting patient has some level of symptoms, these tools are likely to be most effective.
Peak flow meter with few symptom questions can be effectively used in real-life clinical practice for objective detection of asthma and COPD, in absence of good quality spirometry. These tools are required to be tested in larger multi-centric studies. In this cross-sectional study we enrolled consecutive adult patients attending the clinical facility of Chest Research Foundation, Pune, with respiratory complains that required spirometry for diagnosis. Patients with history of pulmonary tuberculosis, and those with contra-indications for spirometry, and also pregnant and nursing mothers were excluded from the study.
Selected patients were administered a questionnaire developed by the Chest Research Foundation. The device was checked for calibration at the beginning and at the end of the study. The technician was trained on using the COPD-6 device at the beginning of the study.
Standard spirometry was performed according to the standards published by the American Thoracic Society and European Respiratory Society.
All the tests were performed by the same trained and experienced technician throughout the study. After reviewing clinical history, physical examination and spirometry reports the physician with a final clinical diagnosis of asthma, COPD, and others. If required chest X-ray was performed to reach to a final alternative clinical diagnosis. The study was approved by the Institutional Ethics Committee of the Chest Research Foundation, Pune and all the participants provided written informed consent.
Using stepwise backward logistic regression, we identified the questions for detection of OAD and for differentiation between asthma and COPD. A priori we decided to retain breathlessness and cough in the model, since these questions are important for detection of OADs. Gonzalez-Garcia, M. Prevalence, risk factors and underdiagnosis of asthma and wheezing in adults 40 years and older: a population-based study.
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Melbye, H. Rosa, F. Vandevoorde, J. Your healthcare provider may not advise you use a PFM unless your asthma is moderate or severe and you are managing it with medicine. PFM can also be used to assess other lung problems, such as:. This is a chronic lung condition that affects the smallest air sacks in the lungs alveoli.
Chronic bronchitis. This is long-term inflammation of the bronchi. It creates excess mucous and a chronic cough. Use of a different type or brand of peak flow meter, as measurements may vary among brands and types of meters.
Your healthcare provider will explain the procedure to you. Ask him or her any questions you have. You may be asked to sign a consent form that gives permission to do the procedure. Read the form carefully. Ask questions if anything is not clear.
Tell your healthcare provider if you take any medicines. This includes prescriptions, over-the-counter medicines, vitamins, and herbal supplements. Before starting daily peak flow meter measuring, your healthcare provider may have you follow a detailed schedule over 2 to 3 weeks. This value will be used as a baseline for your daily measurements. Peak flow measurement is done 1 or more times daily at the same time of day, or whenever you are having early signs of an asthma attack.
Or you should use it when directed by your healthcare provider. Use the peak flow meter PFM before taking asthma medicine. Your healthcare provider may advise other times when using a PFM is useful. Before each use, make sure the sliding pointer on the peak flow meter is reset to the 0 mark.
Take a deep breath and put the mouthpiece in your mouth. Seal your lips and teeth tightly around the mouthpiece. Blow out as hard and as fast as you can. Repeat this 3 times. The 3 readings should be close together.
If not, adjust your technique. Record only the highest of the 3 readings on a graph or in a notebook. Do not average the numbers together. The highest number is called your peak flow or personal best. Use the peak flow meter once a day, or as directed by your healthcare provider. Measure peak flows about the same time each day. Customer Service: Trusted by , Customers Since Your Cart: 0 items. Expand to Learn More. Narrow Your Results:.
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