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Revista chilena de pediatría

versión impresa ISSN 0370-4106

Resumen

PEZOA, Astrid et al. Spirometric caracterization of cystic fibrosis patients. Rev. chil. pediatr. [online]. 2018, vol.89, n.3, pp.332-338. ISSN 0370-4106.  http://dx.doi.org/10.4067/S0370-41062018005000303.

Introduction:

The prognosis of patients with cystic fibrosis (CF) has remarkably improved. The as sessment of the disease progression is based on the measurement of the FEV1 (Forced Expiratory Volume in one second).

Objectives:

1. To describe forced expiratory flows and volumes and com pare their interpretation according to different reference standards (Knudson, Gutiérrez, and multi ethnic GLI); 2. To describe bronchodilator response.

Patients and Method:

The medical records and spirometries of all patients with CF controlled at the Dr. Sotero del Rio Hospital were reviewed. Demographic background, sweat test results, genetic study , and bacteriological study were obtained. In addition, Forced Vital Capacity (FVC) was recorded as well as FEV1 and FEV1/FVC ratio.

Re sults:

Data from 14 patients, were analyzed, seven males, aged 6-24 years, median 15 years, median BMI 18.15 (range 14.6-23.3), median sweat chloride test 76 mEq/l (range 50,2-119 mEq/l), seven patients with at least one F508del mutation. Using multi-ethnic and Gutierrez predictive formulas, lung function involvement occurred previously in relation to the use of Knudson equations. None of the patients had a significant bronchodilator response.

Conclusion:

The group of patients descri bed mostly presents functional respiratory involvement and had no bronchodilator response. The interpretation of functional respiratory involvement varies according to the theoretical values used.

Palabras clave : Cystic fibrosis; spirometry; pulmonary function tests; FEV1.

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