used to counteract the effects of bronchoconstriction, before repeating the spirometry. This will help also referred to as a reversibility test, or a bronchodilator post and can bond to distinguish asthma. .Negative and false positive results are possible in bronchial asthma test. In addition, asthma can be temporary due to exposure to harmful or exercise stimuli.Bronchial provocation test is physically demanding, and the results can be affected by muscle weakness or exhaustion. Inhaled medicines could stimulate higher respiratory enough to cause a violent cough. This can if not more difficult, even impossible spirometry. This test is contraindicated in patients with severe airway obstruction by the apparent worsening of the disability. Can contain, how quickly you into the lungs of the lungs can move oxygen air and eliminate carbon dioxide in the blood. Test to diagnose lung disease, the severity of lung problems and see how does it treat for lung diseases to be measured. Other tests, such as. Check the residual volume, diffusion tests, Bodyplethysmographie, the challenge of breathing and movement stress test to determine pulmonary function of the gas can. Spirometry is the lung function test and most commonly practiced. It measures how much and how fast you can move air into the lungs. For this test, you breathe through a mouthpiece, connected Exercise Challenge Spirometry to a device for recording (spirometry). Information collected by spirometry a Spirogram can be printed in a chart called. The most common lung function with spirometry values:. ARTP are the guardians of quality spirometry in the United Kingdom. And the British Thoracic Society, we offer a variety of methods for those beginners in this measure and an accreditation system to ensure that those that are completed our qualification and the interpretation of results to the internationally recognised standard. Recently was a report of spirometry and noticed that the FVC was lower than normal. A low suggest a restrictive lung disease, but time was warned only 4 seconds to exhale. I took a look at the maps in the report recorded and proven curved volume, ended these efforts well before 6 seconds, and then the first thing I thought was that the FVC is reduced very probably due to suboptimal patient effort than anything else.I always try to check the spirometry results, every time, if no longer the test results and any oil immediately saw that the FVC was reported, in fact a connection, so there is something suspicious. Spirometry and the interpretation of ERS-ATS statements say that the results of the highest CV without frees thoughts about what evidence (includes also the slow vital capacity measurements of lung volumes and diffusion capacity inspiratory volume) report of spirometry should be used. In this case, the VSH defect by an effort, FEV1, and everything else came a different variety. The interesting thing is that the efforts that the VSH 10 seconds duration, came the shows that it was indeed a sufficient effort. On the other hand, the efforts of the FEV1 were only 4 seconds and at the beginning of exhalation and sudden Ende.Der technician, the execution of the selected test correct efforts of a connection. The patient had five efforts of spirometry and other expenses but FEV1 was significantly better than all selected FVC, because the same efforts significantly smaller than several other initiatives. Our selection criteria for FEV1 not to go for the largest FEV-1, also watching the peak-flow (PEF) and if there are no subsequent extrapolation and FEV1 on the was had the highest peaks and no subsequent extrapolation. A good choice in two attempts will be made.When it comes to select various efforts of the spirometry values, there are only a limited number of results, our laboratory software, you can combine the. The FVC, FEV1 & graphics (curl and volume flow volume curve are connected) can individually be selected, but everything else, including the exhaled time, PEF, FEF25-75, MEF50 etc. etc. can be selected only as a group. One plausible explanation for the inconsistent results is vocal cord dysfunction (VCD). VCD is characterized by a paradoxical vocal cord closure what wheeze or stridor and difficulty in breathing. The gold standard for diagnosis is the Laryngoscopy, while the patient is symptomatic, but it can be difficult making a final diagnosis, as the symptoms often come and can go. VCD can mimic asthma, but usually does not respond to bronchodilators patients and the challenge of the negative tests. Spirometry, as these are only indicative, but possible.The real problem was that the spirometry effort, which has been selected, show for the reports that had the patient of upper airway obstruction (56% of the predicted FEV1) in moderately severe and there are several initiatives have been created had a significantly higher FEV1. When I checked the numeric values, it was clear that this effort has been selected, because it burden, was fulfilled the criteria of the TTY-ERS with the highest FEV1 including back Extrapolacion. A report of spirometry, appeared highly questionable, was recently on my desk. Flow-volume loop were falsified and technical notes pointed out that the results were very different and should be interpreted with caution. Raw test results heard and saw a series of efforts to test the volume flow circuit slightly flattened and no coherence in numerical results or links were.This kind of inconsistency can reflect poor patients efforts but can also occur because of respiratory diseases. Cardiac Thoracic Surgeons at my hospital have an active program of airway Stenting and see a whole series of patients with Trachemalacia. A special feature of the Tracheomalacia is that there is usually a restriction of capital movements, and this means that there is usually a maximum end-expiratory flow volume flat loop shelf. These links are peak flow bumps-ish, but the bumps appear in different places in each round and seemed a Wingbeats which often relatively high. I've seen after a report about the pre and Post Bronchodilatator spirometry, which showed a relatively large increase in the FVC and FEV1 changes was not significant. It is not impossible that a patient at this kind of pattern, with a bronchodilator, but is rather unusual. Usually, when I see it, this means that exhale much more post-BD, the pre-BD. But as I saw, saw I happened, otherwise it was actually shorter end-expiratory time post-BD efforts, which was thanks to the efforts of the pre-BD. The current ATS/ERS guidelines require that a person a boost while it is considered after use of FEV1 bronchodilator or at least 12% of the FVC and 200 ml right, clear answer. However, numerous studies have shown that many patients, not does not meet these criteria, in particular those with COPD have a clinically significant improvement with bronchodilators.The edition of September 2014 breast had a series of editorials on this point to evaluate standard tailstock and the response to bronchodilators in General. Both sides have some interesting things to say, but above all a page talking about apples (Physiology) and other Orange aside (statistics). I think that both sides are feeling considerable problems with the rules of the ATS/ERS are only, what they believe is wrong and the best way to repair them.A statistical argument was that the ATS/ERS guidelines is a unique solution that detect more asthma-like responses for more subtle changes that can occur in people with COPD who are low, clinically relevant. I rather agree, as I and others believe that the likely current standard of the ATS/ERS, which require that a revision of the difficulties that spirometry is one according to the measurement with high variability.Variability of spirometry and borders is the accuracy of the sound of family problems for all of us. ,,.