scholarly journals Haemodynamic, acid–base and blood volume changes during prolonged low pressure pneumoperitoneum in rabbits

2006 ◽  
Vol 96 (5) ◽  
pp. 563-568 ◽  
Author(s):  
R. Sümpelmann ◽  
T. Schuerholz ◽  
G. Marx ◽  
D. Härtel ◽  
H. Hecker ◽  
...  
Keyword(s):  
Blood Volume ◽  
Low Pressure ◽  
Volume Changes ◽  
Acid Base

Acute hemorrhage in dogs: construction and validation of models to quantify blood loss

1993 ◽  
Vol 74 (2) ◽  
pp. 510-519 ◽  
Author(s):  
Y. Waisman ◽  
P. Q. Eichacker ◽  
S. M. Banks ◽  
W. D. Hoffman ◽  
T. J. MacVittie ◽  
...  
Keyword(s):  
Blood Loss ◽  
Blood Volume ◽  
Linear Regression Analysis ◽  
Base Deficit ◽  
Prediction Errors ◽  
Volume Changes ◽  
Acid Base ◽  
Acute Hemorrhage ◽  
Base Parameters ◽  
Analysis Models

We examined the ability of commonly used clinical parameters to quantify acute hemorrhage in dogs. Eight animals were bled 40 ml/kg body wt over 100 min. Ten hemodynamic and 20 blood laboratory parameters were obtained every 10 min to construct, with use of linear regression analysis, models that quantify blood loss. During model construction, the best indicator of quantity of hemorrhage was arterial base deficit [ABD; coefficient of variation (CV) 35%]. This model was more accurate (P < 0.05) than 27 others (CV range 43 to 63%) and similar to systolic (CV 40%) and mean (CV 40%) arterial pressures. In validation studies in 10 additional animals, our best models based on ABD and systolic and mean arterial pressures each unexpectedly showed a significant (P < 0.05) decrease in accuracy (CV 86, 57, and 60%, respectively) attributable to large baseline (before hemorrhage) variability among animals. To eliminate this variability, models based on changes from baseline measurements were investigated. The best predictor of change in blood volume was change in ABD (CV 27%). This model was significantly (P < 0.05) more accurate than any of 27 others (CV range 36 to 65%) and similar to change in venous base deficit and venous pH (each CV 31%). When validated, acid-base models such as ABD, venous pH, and arterial bicarbonate were the best predictors of volume change (CV range 28 to 40%). With the use of multivariate analysis, pairwise combinations of single parameter models (n = 465) improved prediction errors only minimally. In summary, most commonly used hemodynamic and blood indexes could not be validated as accurate measurements in quantifying hemorrhage. In contrast, changes in acid-base parameters were validated as moderately accurate predictors of blood volume changes and therefore may have utility in the assessment of patients with ongoing hemorrhage.

Prediction of Solute Kinetics, Acid-Base Status, and Blood Volume Changes During Profiled Hemodialysis

10.1114/1.245 ◽  
2000 ◽  
Vol 28 (2) ◽  
pp. 204-216 ◽  
Author(s):  
M. Ursino ◽  
L. Colí ◽  
C. Brighenti ◽  
L. Chiari ◽  
A. De Pascalis ◽  
...  
Keyword(s):  
Blood Volume ◽  
Volume Changes ◽  
Acid Base ◽  
Acid Base Status

Early MRI blood volume changes in constrictor muscles correlate with post-radiation dysphagia

2020 ◽  
Author(s):  
Michelle L. Mierzwa ◽  
Laila A. Gharzai ◽  
Pin Li ◽  
Joel R. Wilkie ◽  
Peter G. Hawkins ◽  
...  
Keyword(s):  
Blood Volume ◽  
Volume Changes ◽  
Post Radiation

An Electronic Method of Detecting Blood Volume Changes

1965 ◽  
Vol 26 (2) ◽  
pp. 199-203 ◽  
Author(s):  
Rex J. Underwood ◽  
David Gowing
Keyword(s):  
Blood Volume ◽  
Volume Changes ◽  
Electronic Method

scholarly journals Cerebral blood volume changes during the BOLD post-stimulus undershoot measured with a combined normoxia/hyperoxia method

NeuroImage ◽  
2019 ◽  
Vol 185 ◽  
pp. 154-163 ◽  
Author(s):  
Eulanca Y. Liu ◽  
Frank Haist ◽  
David J. Dubowitz ◽  
Richard B. Buxton
Keyword(s):  
Blood Volume ◽  
Cerebral Blood Volume ◽  
Volume Changes
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