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[Measuring tidal volume during paediatric oscillatory and jet high-frequency ventilation]. 2012

M J Solana, and J López-Herce, and J Urbano, and S Mencía, and J del Castillo, and J M Bellón
Servicio de Cuidados Intensivos Pediátricos, Hospital General Universitario Gregorio Marañón, Universidad Complutense, Madrid, España.

OBJECTIVE To ascertain whether a spirometer can measure tidal volume (TV) during high frequency oscillatory ventilation (HFOV) and high frequency jet ventilation (HFJV), and to analyse the effect of changes in ventilator settings. METHODS The study was performed with paediatric porcine lung models submitted to HFOV with a Sensormedics 3100 ventilator and HFJV with a Paravent Pat(e)(R) ventilator connected to a D-Fend spirometer. Programmed frequency, amplitude, and mean airway pressure (MAP) were changed in the ventilator, and TV and pressures were recorded using the spirometer. RESULTS The spirometer measured TV in the paediatric lung models and piglets, but could not measure TV less than 8 ml, when the pressure amplitude was higher than 55 cmH(2)O or the MAP was higher than 30 cmH(2)O. With HFOV there was a correlation between amplitude and tidal volume, and a positive correlation between pressure and TV with HFJV. With both respirators there was a negative correlation between frequency and TV. CONCLUSIONS The D-Fend spirometer can measure tidal volume and pressure during HFOV and HFJV. However, it does not work with volumes lower than 8 ml, and high amplitude or mean airway pressure.

UI MeSH Term Description Entries
D006611 High-Frequency Jet Ventilation Respiratory support system used primarily with rates of about 100 to 200/min with volumes of from about one to three times predicted anatomic dead space. Used to treat respiratory failure and maintain ventilation under severe circumstances. Ventilation, High Frequency Jet,High Frequency Jet Ventilation,High-Frequency Jet Ventilations,Jet Ventilation, High-Frequency,Jet Ventilations, High-Frequency,Ventilation, High-Frequency Jet,Ventilations, High-Frequency Jet
D006612 High-Frequency Ventilation Ventilatory support system using frequencies from 60-900 cycles/min or more. Three types of systems have been distinguished on the basis of rates, volumes, and the system used. They are high frequency positive-pressure ventilation (HFPPV); HIGH-FREQUENCY JET VENTILATION; (HFJV); and high-frequency oscillation (HFO). High-Frequency Oscillation Ventilation,High-Frequency Positive Pressure Ventilation,Ventilation, High-Frequency,High Frequency Oscillation Ventilation,High Frequency Positive Pressure Ventilation,High Frequency Ventilation,Ventilation, High Frequency,High Frequency Ventilations,High-Frequency Oscillation Ventilations,High-Frequency Ventilations,Oscillation Ventilation, High-Frequency,Oscillation Ventilations, High-Frequency,Ventilation, High-Frequency Oscillation,Ventilations, High Frequency,Ventilations, High-Frequency,Ventilations, High-Frequency Oscillation
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013147 Spirometry Measurement of volume of air inhaled or exhaled by the lung. Spirometries
D013552 Swine Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA). Phacochoerus,Pigs,Suidae,Warthogs,Wart Hogs,Hog, Wart,Hogs, Wart,Wart Hog
D013556 Swine, Miniature Genetically developed small pigs for use in biomedical research. There are several strains - Yucatan miniature, Sinclair miniature, and Minnesota miniature. Miniature Swine,Minipigs,Miniature Swines,Minipig,Swines, Miniature
D013990 Tidal Volume The volume of air inspired or expired during each normal, quiet respiratory cycle. Common abbreviations are TV or V with subscript T. Tidal Volumes,Volume, Tidal,Volumes, Tidal

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