scholarly journals Functional residual capacity tool: A practical method to assess lung volume changes during pulmonary complications in mechanically ventilated patients

2010 ◽  
Vol 14 (3) ◽  
pp. 151-153
Author(s):  
S. Veena ◽  
Sudeep Palepu ◽  
G.S. Umamaheswara Rao ◽  
V.J. Ramesh
Keyword(s):  
Functional Residual Capacity ◽  
Lung Volume ◽  
Practical Method ◽  
Pulmonary Complications ◽  
Volume Changes ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Residual Capacity ◽  
Ventilated Patients

Measurement of end-expiratory lung volume by oxygen washin–washout in controlled and assisted mechanically ventilated patients

2008 ◽  
Vol 34 (12) ◽  
pp. 2235-2240 ◽  
Author(s):  
N. Patroniti ◽  
M. Saini ◽  
A. Zanella ◽  
D. Weismann ◽  
S. Isgrò ◽  
...  
Keyword(s):  
Lung Volume ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Ventilated Patients

A fundamental problem in determining functional residual capacity or residual volume

1986 ◽  
Vol 60 (5) ◽  
pp. 1810-1813 ◽  
Author(s):  
U. Boutellier ◽  
L. E. Farhi
Keyword(s):  
Experimental Data ◽  
Functional Residual Capacity ◽  
Volume Change ◽  
Lung Volume ◽  
General Equation ◽  
Fundamental Problem ◽  
Residual Volume ◽  
Volume Changes ◽  
Final Volume ◽  
Residual Capacity

To measure a lung volume that is not directly accessible, one often follows dilution of a single-gas tracer, present initially only in the lung or in a rebreathing bag. The final volume available to the tracer is assumed to be the sum of the two initial components. Since O2 is taken up and CO2 is eliminated during the few breaths required for mixing, the total volume changes. The error in lung volume due to this volume change can exceed 10%. In this paper we 1) present theoretical and experimental data to demonstrate the effect of CO2 and O2 exchange, 2) introduce a general equation, based on N2 and Ar, which allows one to circumvent the problems created by these fluxes, and 3) show the pitfall of the back-extrapolation approach for a single tracer.

Lung volume in mechanically ventilated patients: measurement by simplified helium dilution compared to quantitative CT scan

2004 ◽  
Vol 30 (2) ◽  
pp. 282-289 ◽  
Author(s):  
Nicolò Patroniti ◽  
Giacomo Bellani ◽  
Annamaria Manfio ◽  
Elena Maggioni ◽  
Angela Giuffrida ◽  
...  
Keyword(s):  
Ct Scan ◽  
Lung Volume ◽  
Quantitative Ct ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Helium Dilution ◽  
Ventilated Patients
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