2025, Number 1
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Alerg Asma Inmunol Pediatr 2025; 34 (1)
Correlation of asthma control test with spirometry in patients with mild to moderate asthma
Amador-Gutiérrez K, González-Tuyub Y, Nava-Ramírez IC, González-Luna RH, Azamar-Jácome AA
Language: Spanish
References: 24
Page: 6-11
PDF size: 379.14 Kb.
ABSTRACT
Introduction: asthma is a chronic inflammatory disease of the airways. The diagnosis typically involves a combination of symptoms, lung function tests and therapeutic response. Asthma's varied progression, or heterogeneity, requires continuous monitoring using a combination of objective and subjective tools to assess lung function and patient experience.
Objective: to assess if there is a linear correlation between the score in the Asthma Control Test (ACT) and the degree of obstruction measured by FEV
1 from spirometry in patients with mild to moderate asthma.
Material and methods: observational, analytical, cross-sectional, prospective study. Data from ACT and FEV
1 were collected from patients over 18 years old with a diagnosis of mild to moderate asthma, attending a third-level hospital in Mexico.
Results: a total of 60 patients were analyzed (78.3% women, 21.7% men), with a mean age of 51.6 ± 13.53 years (median age 51.5 years, minimum 18 years, and maximum 82 years). Median ACT scores was 21 points (minimum 11, maximum 25 points), and median FEV
1 percentage was 88.5% (minimum 56%, maximum 121%). When analyzing the correlation between FEV
1 and ACT values, an inverse correlation (r = –0.115) was found in the qualitative analysis of the variables, and a weak correlation (r = 0.017) was found in the quantitative analysis.
Conclusions: the ACT is an affordable and easily accessible tool for monitoring asthma patients. However, due to the lack of a significant correlation with objective values, it cannot be recommended as the sole evaluation tool.
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