The aim of the Task Force was to derive continuous prediction equations and their lower limits
of normal for spirometric indices, which are applicable globally. Over 160,000 data points …

Background: Spirometry is the most common pulmonary function test. It is widely used in the
assessment of lung function to provide objective information used in the diagnosis of lung …

Background Appropriate interpretation of pulmonary function tests (PFTs) involves the
classification of observed values as within/outside the normal range based on a reference …

… Ideally, the subject should produce at least two acceptable curves, where the second highest
FVC and FEV t are within 0.1 L or 10% of the highest value, whichever is greater. If a single …

Inert gas washout tests, performed using the single- or multiple-breath washout technique,
were first described over 60 years ago. As measures of ventilation distribution inhomogeneity, …

There are numerous reference equations available for the single-breath transfer factor of
the lung for carbon monoxide (T LCO ); however, it is not always clear which reference set …

Oscillometry (also known as the forced oscillation technique) measures the mechanical
properties of the respiratory system (upper and intrathoracic airways, lung tissue and chest wall) …

Background Measurement of lung volumes across the life course is critical to the diagnosis
and management of lung disease. The aim of the study was to use the Global Lung Function …

Rationale: Better understanding of evolution of lung function in infants with cystic fibrosis (CF)
and its association with pulmonary inflammation and infection is crucial in informing both …

This international task force report updates general considerations for bronchial challenge
testing and the performance of the methacholine challenge test. There are notable changes …