PURPOSE: To investigate the early obstruction of air flow in adult smokersattended in university clinic using an electronic device that monitors the lung function. To determine the clinic performance of Piko-6 to identify the air flow obstruction in an early time, through the ratio FEV1/FEV6 and FEV1/FVC.
METHODS: The 148 selected patients for this research had their breathing symptoms documented through questionnaire self-administered and validated (ATS-DLD-1978) and/or were smokers, after approval of the ethics committe in research at FURB. We analyzed the ratio FEV1/F EV6 (which was collected through a mensurador of digital flow peak (Piko-6-Ferraris Respiratory Europe Ltd), and also the spirometri cs data (FEV1/FVC-One Flow - Clement Clark-UK) of 35 patients that returned to the clinic after a phone call). The reference values of the obtained air flow were compared with the predict valuesby Hankinson's study, while the obstruction classification wasdone through the parameters published by GOLD.
RESULTS: The results obtained by comparing the FEV1/FEV6 with FEV1/FVC were sensibility 40%; specificity 60%; prevalence 85,7%; positive predictive value 0.857 and negative predictive value 0.148.
CONCLUSION: It is a good device for detection of mild and moderate obstruction, and it helps for the early detection of obstruction. However, the spirometry continues being the gold standart exam for the diagnosis confirmation. We found a lot of limitations in this studybecause of the reduced sample of patients, and this could be anincitive to increase the sample in a next study.
CLINICAL IMPLICATIONS: The usefulness of Piko-6 should be encouraged as a screening testin health units and in daily practice of general practitioners with the purpose of diagnosing the air flow obstruction in an earlytime.
DISCLOSURE: Marcio Martins, No Financial Disclosure Information; No Product/Research Disclosure Information