Airway obstruction can be better predicted using Global Lung Function Initiative spirometry reference equations in...

Area of Science:

• Pulmonology
• Genetics
• Medical Diagnostics

Background:

• Marfan syndrome is a genetic connective tissue disorder.
• Lung involvement is a known complication of Marfan syndrome.
• Early detection of pulmonary changes is crucial for patient management.

Purpose of the Study:

• To evaluate lung function in asymptomatic adult Marfan syndrome patients.
• To compare pulmonary function test (PFT) results using European Community for Coal and Steel (ECCS) and Global Lung Function Initiative (GLI) reference values.
• To determine the suitability of GLI equations for detecting early ventilatory changes in Marfan syndrome.

Main Methods:

• Pulmonary function tests were conducted on 32 asymptomatic adult Marfan patients.
• Results were analyzed using both ECCS and GLI reference values.
• Statistical analysis was performed to compare lung function parameters and identify significant differences.

Main Results:

• Significantly lower predicted values for forced vital capacity (FVC) and forced expiratory volume in the first second (FEV1) were observed when using GLI equations compared to ECCS.
• An obstructive ventilatory pattern was detected in 25% of patients using GLI lower limit of normal (LLN).
• Obstructive patterns were more prevalent in male patients (50%) than female patients (10%).

Conclusions:

• GLI equations are more sensitive in detecting early ventilatory changes, including airway obstruction, in Marfan syndrome patients.
• GLI is recommended as the standard for evaluating lung function in the asymptomatic Marfan population.
• This approach aids in the early identification and management of pulmonary complications in Marfan syndrome.