Related Experiment Video
Updated: Sep 24, 2025

The WinCF Model - An Inexpensive and Tractable Microcosm of a Mucus Plugged Bronchiole to Study the Microbiology of Lung Infections
Published on: May 8, 2017
Annual FEV1 Loss in Patients with Noncystic Fibrosis Bronchiectasis and Affecting Factors
Sermin Borekci1, Sule Gundogdu1, Deniz Ongel Harbiyeli1
1From the Department of Pulmonary Diseases, Cerrahpasa Medical Faculty, Istanbul University, Cerrahpasa, Istanbul, Turkey.
Objectives:
Bronchiectasis is a chronic respiratory disease characterized by sputum production, cough, and several bronchial infections. Lung function is an important parameter to evaluate and study in patients with bronchiectasis. This study aimed to evaluate the annual changes in forced expiratory volume in one second (FEV1) and related factors in patients with with noncystic fibrosis bronchiectasis.
Methods:
A total of 529 patients who were diagnosed as having bronchiectasis using computed tomography and followed at the bronchiectasis unit of the Cerrahpasa Medical Faculty at Istanbul University between 1996 and 2018 were included in this retrospective study. A total of 153 patients were included in the study.
Results:
The mean age of the patients was 58.6 ± 16.8 years and 61% (n = 93) were female. The annual change of FEV1 and forced vital capacity was -39 ± 82 (minimum: -585, maximum: 355, median: -26) mL and - 44 ± 91 (minimum: -517, maximum: 303, median: -31) mL, respectively. There was no correlation in FEV1 decline between those with and without Pseudomonas colonization (P = 0.65). No correlation was found between the etiologic factors and the decline of FEV1. A correlation existed only between the first FEV1 and the decline of FEV1 (for the first FEV1%, P = 0.038 [R = -0.17]; for the first FEV1 [mL] P = 0.026 [R = -0.18]).
Conclusions:
An annual mean FEV1 loss of 39 mL was found in adult patients with noncystic fibrosis bronchiectasis. The annual mean FEV1 decline was found to be associated with the baseline FEV1 value. Physicians should exercise caution in this regard in patients with bronchiectasis with low FEV1 values.
Related Concept Videos
Factors Affecting Pulmonary Ventilation
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Cystic Fibrosis: Management
Sinus disease and chronic...
Chronic Obstructive Pulmonary Disease-I: Introduction
Chronic Obstructive Pulmonary Disease
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
Cystic Fibrosis: Pathogenesis
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
Chronic Obstructive Pulmonary Disease-II: Pathophysiology
Chronic Inflammation

