The meaning of SPIROMETER is an instrument for measuring the air entering and leaving the lungs (as in determining lung function in the diagnosis of pulmonary disease).
Spirometric measurements as a measure of respiratory function Although spirometry is only a surrogate measure of respiratory function in the perioperative period, it is an accurate, reproducible and simple investigative tool that can be used easily in the immediate perioperative period in both the operat...
PURPOSE: Spirometry is commonly utilized to diagnose obstructive airways defect(OAD). As per spirometric criteria OAD is defined as FEV1/FVC% < LLN based on NHANES III reference equations. However as per ATS/ERS 2005 interpretation strategy, OAD is diagnosed by low FEV1/ best VC ( often SVC)...
Functional lung size is defined as the ideal lung volume for aeration during mechanical ventilation without over-distension or under-ventilation25. Optimizing the tidal volume to the functional lung size leads to a minimum driving pressure and maximum lung compliance. In our study, low driving ...
The main strength of the technique is to be based on 3D motion corrected MR images, namely on complete 4D MR dataset. As seen above, the parameters we have explored can be quantified, first, everywhere in the lung, second upon the actual 3D motion field of the lung parenchyma. The latter...
Small airways including bronchioles, terminal bronchioles, respiratory bronchioles, alveolar ducts, and alveolar sacs are usually defined as those of < 2 mm diameter and without cartilage, located approximately by the 8th generation [11]. The cilia swing frequency of small airways is lower than ...
OBJECTIVES: To evaluate the phenotype of normal spirometry as defined by a new approach from the Global Lung Initiative (GLI), overall and across GOLD spirometric categories. METHODS: Using data from COPDGene (n=10,131; ages 45-81; smoking history, ≥10 pack-years), we evaluated spirometry ...
The fifth percentile is defined as the lower limit of normal (LLN) and values below the LLN are considered to be pathological. One of the main benefits of the new GLI reference values is that the LLN is individually calculated for each patient. Older patients show a greater variance of ...
Its utility transcends the field of Respiratory Medicine, is becoming increasingly important in primary care and applications have even been described outside the field of respiratory diseases. This document is therefore intended to serve as support for all health professionals who use spirometry, ...
Rrs and Xrs are tidal breathing values of, respectively, inspiratory resistance and reactance at 5, 11 and 19 Hz; Rrs: resistance; Xrs: reactance; Rrs5-19: difference between Rrs5 and Rrs19; ΔXrs: inspiratory minus expiratory Xrs; Flow limitation is defined as the percentage of breaths ...