To assess whether the respiratory rate to tidal volume ratio (RVR) measured while receiving automatic tube compensation (ATC) [RVRATC] would have a better predictive value as a weaning measure than unassisted RVR.
Cohen JD, Shapiro M, Grozovski E, Singer P: Automatic tube compensation-assisted respiratory rate to tidal volume ratio improves the prediction of weaning outcome.
In this pilot study, we compared the EAdi with conventional parameters of weaning failure, such as the ratio of respiratory rate to tidal volume.
Data presented as median (interquartile range) or n. f/VT, respiratory rate to tidal volume ratio; MEP, maximum expiratory pressure; MIP, maximum inspiratory pressure; MV, mechanical ventilation; NIV, noninvasive ventilation; VC, vital capacity.
They recorded diaphragm pressure- time product per min (PTPdi/min), tension-time index of the diaphragm (TTdi), and the ratio of respiratory rate to tidal volume (f/VT) for 2 different tracheotomy tube, with an inner diameters 8 mm and 6.5 mm.
Typically, patients are deemed ready for liberation from mechanical ventilation when they have successfully passed a test, such as a spontaneous breathing trial with a low rapid shallow breathing index (expressed as the ratio of respiratory rate to tidal volume, or RR/Vt) [ 6].
Manufacturers/Assemblers: Provide FFI products at a reduced rate corresponding to volume of purchase.
The stirring speed was initially set at 200 rpm and the aeration rate to 0.1 vvm (volume of gas per volume of liquid per minute).
For an incompressible fluid it may be used to relate volume flow rate to the time varying volume of fluid compartments and the net production or absorption within.
The importance of data's velocity has followed a similar rate to that of volume as the data flow into organizations increases at exponential rates [51, 55].
