| Autor: |
Corral-Blanco M; Severe Asthma Unit, Pneumology Service, Hospital Universitario, Madrid, Spain., Díaz Campos RM; Severe Asthma Unit, Pneumology Service, Hospital Universitario, Madrid, Spain., Peláez A; Facultad de Ciencias de la Salud-HM Hospitales, Universidad Camilo José Cela, Madrid, Spain.; Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III (ISCIII), Madrid, Spain., Melero Moreno C; Institute for Health Research (i + 12), Hospital Universitario, Madrid, Spain. |
| Jazyk: |
angličtina |
| Zdroj: |
The Journal of asthma : official journal of the Association for the Care of Asthma [J Asthma] 2024 May; Vol. 61 (5), pp. 427-435. Date of Electronic Publication: 2023 Dec 01. |
| DOI: |
10.1080/02770903.2023.2288316 |
| Abstrakt: |
Introduction: The multiple forced expiratory maneuvers that must be performed during methacholine test require a high degree of collaboration and can lead to fatigue. However, impulse oscillometry (IOS) is a noninvasive test, quick and easy to perform, that does not require effort-dependent maneuvers. Objectives: The primary endpoint was to evaluate the relationship between IOS and spirometry during the methacholine test. The secondary endpoint was to study the predictive value of baseline IOS in the development of bronchial hyperreactivity. Methods: Observational, prospective, cross-sectional study, with recruitment of consecutive patients from the pulmonology department with clinical suspicion of bronchial asthma with negative bronchodilator test and normal FeNO. Results: Twenty-five patients were included, with a mean age of 49 ± 18 years. Thirteen patients (52%) had a positive methacholine test. The correlation between IOS indices and FEV1 was significant ( p < 0.05) in all cases. The indices with the highest predictive power were R5-20 and AX. The optimal cutoff points were an increase of greater than 32.96% in R5, greater than 120.83% for X5, an increase of 30.30 [kPa l-1s-1] in R5-20, and an increase of 1.01 [kPa l-1] for AX. Baseline oscillometry demonstrated a strong predictive value in the development of bronchial hyperreactivity, with a sensitivity of 61.5% and a specificity of 91.7%, using the cut-off point of 160.0% for R5. Conclusions: IOS may be a valuable alternative to forced spirometry in detecting bronchial hyperreactivity during the methacholine test, showing a good correlation between both tests. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
