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Ocena jakości badań spirometrycznych - wymagania, automatyzacja, praktyka

Radliński J., Tomalak W., Czajkowska-Malinowska M.

Pomiary Automatyka Kontrola

2013

R. 59, nr 3

250--253

W pracy omówiono podstawy wykonywania badania spirometrycznego ze uwzględnieniem procedury pomiaru krzywej przepływ – objętość oraz kryteriów jakościowych oceny spirometrii na podstawie zaleceń standaryzacyjnych. Dokonano analizy jakości pomiaru krzywej przepływ objętość w trzech grupach: u dzieci, u osób w podeszłym wieku oraz uzyskanych w trakcie Światowego Dnia Spirometrii. Podkreślono rolę personelu wykonującego badania oraz sformułowano kilka postulatów dotyczących realizacji sprzętowo – programowych systemów spirometrycznych.

The authors present description of the spirometry focusing on forced flow volume loop measurements and corresponding requirements according to ERS/ATS 2005 [2,3] and PTChP [4] 2006 statements. The introduction to actually applied solutions in supporting automatic assessment of quality assurance (QA)criteria is also presented. The quality analysis of spirometric measurements was performed for three different groups: children younger than 10 years, the group of elderly people and the spirometry obtained during the World Spirometry Day. All the three groups expressed different quality problems: the main problem in children group was too restrictive value of the demanded time of forced expiration (especially regarding significant correlation between the age and the forced expiratory time) – only 23.9% children fulfilled this re-quirements, in the group of elderly people lack of plateau on the expiratory end was the mostly registered error – 60,2%. In the spirometries obtained during the World Spirometry Day the significant number of non-repetitive measurements and the small number of properly performed measurements (only 28%) was the most interesting aspect. The authors concluded that competence and qualifications of the laboratory staff played the most important role in ensuring the quality of spirometry. However, some demands could be addressed to manufacturers of spirometry equipment.

Spirometry: quantification of the shape of the maximal expiratory flow-volume curve

Gólczewski T., Lubiński W.

Biocybernetics and Biomedical Engineering

2008

Vol. 28, no. 3

17-25

The relationship between Forced Expiratory Volume in one second (FEV1) and the Forced Vital Capacity (FVC) is intensively used in diagnosing because of its quantitative description with the index FEV1/FVC. There is not such index for the relationship between airflows (Peak Expiratory Flow (PEF) and Maximal Expiratory Flow at xx% of FVC (MEFxx, where xx = 75, 50, 25%)). Our aim was to describe that relationship quantitatively with the angle alfa between the 4-dimensional vector F = [PEF, MEF75, MEF50, MEF25] and the plane determined by two reference vectors: the mean of such vectors for the young and elderly. The reference vectors were found with data for 1,120 males and 1,625 females - Polish (white) population, healthy, never-smoking, aged 18 - 85 yrs, who performed a technically adequate spirometry maneuver. Upper Limit of Normal (ULN) was determined with the linear regression of the 5th percentiles of alfa on age (0.074*age + 2.76). Such an ULN seems to well indicate both improper examination and non-healthy persons.