Cel Portable meters that record the peak expiratory flow (PEF) from the lungs, and are used world wide for the diagnosis and management of asthma, have been found to give inaccurate readings. Standardised methods are required that will enable the performance of PEF meters to be established accurately.The purpose of the project was to establish the best means for testing the performance of portable meters that record the peak expiratory flow from the lungs. The specific objectives of the project were:to produce three computer controlled piston pumps that can produce accurately known flows in the range up to 15 L/s with flow-time profiles of varying shapes;to produce a simpler calibrator for PEF meters, with a limited but sufficient number of flow profiles, based on an explosive decompression device.The two test systems, the decompression device and the pumps, gave similar results when uncomplicated test profiles were used. However, testing with brief transients of flow, such as produced by humans, could only be satisfactorily undertaken with the decompression device since the pump system was susceptible to wave effects. Recommendations for how to test portable PEF meters have been made and when these have been agreed with the manufacturers it is hoped that they will be used to help establish European Standards for testing portable PEF meters. The partners are continuing to work in the area of lung function testing.Three servo-controlled piston pumps were produced that can generate flows of gas up to 20 L/s and achieve this peak with a 10 to 90 % rise time of less than 40 milliseconds, more than meeting the requirements for simulating human subjects. The pumps can discharge timed volumes to within 5 ml accuracy over a range of up to 7 litres. An explosive decompression device, the alternative means of testing PEF meters, was modified to allow flow profiles of various shapes to be used to test the PEF meters. A range of shapes was devised that that encompassed the variation found in human subjects. PEF meters from the three major manufacturers were tested using both the decompression device and the pumps. Dziedzina nauki medical and health sciencesclinical medicinepneumologyasthma Program(-y) FP3-MAT - Specific research and technological development programme (EEC) in the field of measurements and testing, 1990-1994 Temat(-y) Data not available Zaproszenie do składania wniosków Data not available System finansowania CSC - Cost-sharing contracts Koordynator UNIVERSITY OF BIRMINGHAM Wkład UE Brak danych Adres EDGBASTON B15 2TT BIRMINGHAM Zjednoczone Królestwo Zobacz na mapie Linki Strona internetowa Opens in new window Koszt całkowity Brak danych Uczestnicy (2) Sortuj alfabetycznie Sortuj według wkładu UE Rozwiń wszystko Zwiń wszystko Rijksuniversiteit Leiden Niderlandy Wkład UE Brak danych Adres 72,Wassenaarseweg 2300 AL Leiden Zobacz na mapie Koszt całkowity Brak danych UNIVERSITY OF AARHUS Dania Wkład UE Brak danych Adres 180,Vennelyst Boulevard, 6 8000 AARHUS C Zobacz na mapie Koszt całkowity Brak danych
