Medium effects of some denaturing agents on volume changes produced by acid-base reactions

1971 ◽  
Vol 75 (8) ◽  
pp. 1120-1125 ◽  
Author(s):  
Sam Katz ◽  
Jane E. Miller
Keyword(s):  
Volume Changes ◽  
Medium Effects ◽  
Acid Base

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

Salt Effects and Medium Effects on Indicator Acid-Base Equilibria in a Methanol-Water Solvent

1964 ◽  
Vol 86 (4) ◽  
pp. 549-554 ◽  
Author(s):  
Donald. Rosenthal ◽  
Hannah B. Hetzer ◽  
Roger G. Bates
Keyword(s):  
Medium Effects ◽  
Acid Base ◽  
Salt Effects ◽  
Water Solvent

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

Higher Dietary Acidity is Associated with Lower Bone Mineral Density in Postmenopausal Iranian Women, Independent of Dietary Calcium Intake

2014 ◽  
Vol 84 (3-4) ◽  
pp. 0206-0217 ◽  
Author(s):  
Seyedeh-Elaheh Shariati-Bafghi ◽  
Elaheh Nosrat-Mirshekarlou ◽  
Mohsen Karamati ◽  
Bahram Rashidkhani
Keyword(s):  
Calcium Intake ◽  
Dietary Calcium ◽  
Dietary Calcium Intake ◽  
Dietary Intakes ◽  
Iranian Women ◽  
Acid Base Balance ◽  
Mineral Density ◽  
Acid Base ◽  
Base Balance ◽  
Dietary Acid

Findings of studies on the link between dietary acid-base balance and bone mass are relatively mixed. We examined the association between dietary acid-base balance and bone mineral density (BMD) in a sample of Iranian women, hypothesizing that a higher dietary acidity would be inversely associated with BMD, even when dietary calcium intake is adequate. In this cross-sectional study, lumbar spine and femoral neck BMDs of 151 postmenopausal women aged 50 - 85 years were measured using dual-energy x-ray absorptiometry. Dietary intakes were assessed using a validated food frequency questionnaire. Renal net acid excretion (RNAE), an estimate of acid-base balance, was then calculated indirectly from the diet using the formulae of Remer (based on dietary intakes of protein, phosphorus, potassium, and magnesium; RNAERemer) and Frassetto (based on dietary intakes of protein and potassium; RNAEFrassetto), and was energy adjusted by the residual method. After adjusting for potential confounders, multivariable adjusted means of the lumbar spine BMD of women in the highest tertiles of RNAERemer and RNAEFrassetto were significantly lower than those in the lowest tertiles (for RNAERemer: mean difference -0.084 g/cm2; P=0.007 and for RNAEFrassetto: mean difference - 0.088 g/cm2; P=0.004). Similar results were observed in a subgroup analysis of subjects with dietary calcium intake of >800 mg/day. In conclusion, a higher RNAE (i. e. more dietary acidity), which is associated with greater intake of acid-generating foods and lower intake of alkali-generating foods, may be involved in deteriorating the bone health of postmenopausal Iranian women, even in the context of adequate dietary calcium intake.

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