Measurement of bronchial hyperreactivity : comparison of three Nordic dosimetric methods

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Lassmann-Klee , P G , Sundblad , B-M , Malmberg , L P , Sovijarvi , A R A & Piirilä , P 2020 , ' Measurement of bronchial hyperreactivity : comparison of three Nordic dosimetric methods ' , Scandinavian Journal of Clinical & Laboratory Investigation , vol. 80 , no. 3 , pp. 222-229 . https://doi.org/10.1080/00365513.2020.1719541

Title: Measurement of bronchial hyperreactivity : comparison of three Nordic dosimetric methods
Author: Lassmann-Klee, Paul G.; Sundblad, Britt-Marie; Malmberg, Leo P.; Sovijarvi, Anssi R. A.; Piirilä, Päivi
Contributor: University of Helsinki, Department of Diagnostics and Therapeutics
University of Helsinki, HUS Inflammation Center
University of Helsinki, HUS Medical Imaging Center
University of Helsinki, HUS Medical Imaging Center
Date: 2020-04-02
Language: eng
Number of pages: 8
Belongs to series: Scandinavian Journal of Clinical & Laboratory Investigation
ISSN: 0036-5513
URI: http://hdl.handle.net/10138/316708
Abstract: Clinical testing of bronchial hyperreactivity (BHR) provides valuable information in asthma diagnostics. Nevertheless, the test results depend to a great extent on the testing procedure: test substance, apparatus and protocol. In Nordic countries, three protocols predominate in the testing field: Per Malmberg, Nieminen and Sovijarvi methods. However, knowledge of their equivalence is limited. We aimed to find equivalent provocative doses (PD) to obtain similar bronchoconstrictive responses for the three protocols. We recruited 31 patients with suspected asthma and health care workers and performed BHR testing with methacholine according to Malmberg and Nieminen methods, and with histamine according to Sovijarvi. We obtained the individual response-dose slopes for each method and predicted equivalent PD values. Applying a mixed-model, we found significant differences in the mean (standard error of mean) response-dose (forced expiratory volume in one second (FEV1)%/mg): Sovijarvi 7.2 (1.5), Nieminen 13.8 (4.2) and Malmberg 26 (7.3). We found that the earlier reported cut-point values for moderate BHR and marked BHR between the Sovijarvi (PD15) and Nieminen (PD20) methods were similar, but with the Malmberg method a significant bronchoconstrictive reaction was measured with lower PD20 values. We obtained a relationship between slope values and PD (mg) between different methods, useful in epidemiological research and clinical practice.
Subject: Histamine
methacholine
asthma
response-dose slope
provocative dose
METHACHOLINE PROVOCATION
LUNG-FUNCTION
CHALLENGE
POPULATION
HISTAMINE
TESTS
HYPERRESPONSIVENESS
RESPONSIVENESS
REPEATABILITY
DEPOSITION
3111 Biomedicine
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