Abstract
This study was conducted to describe the acid-base effects of hydration and dehydration of oxygenated and deoxygenated whole blood. Whole blood samples from goats were equilibrated in a tonometer to a partial pressure of carbon dioxide of 40 mm Hg and oxygen (PO2) of 100 mm Hg or 30 mm Hg. Contraction alkalosis was achieved by evaporating blood samples to 80% of the original volume. Dilutional acidosis was achieved by increasing the blood sample volume by 20% by addition of sterile water. Acid-base, electrolyte, hemoglobin, lactate, albumin, and phosphorus concentrations were measured at baseline and after dehydration or hydration. A 20% dehydration of whole blood caused a 22% increase in sodium concentration and a significant increase in base excess of +3 mEq/L (P < 0.01); bicarbonate concentration increased only 7% to 9%. A concurrent increase was found in phosphorus, albumin, hemoglobin, and lactate concentrations. A 20% dilution of whole blood caused a 21% decrease in sodium concentration and a significant decrease in base excess of -5 mEq/L (P < 0.01) with an 11% to 15% decrease in bicarbonate concentration. A concurrent decrease was found in phosphorus, albumin, and hemoglobin concentrations. No significant difference was observed between the acid-base effects on oxygenated versus deoxygenated blood in any experiment. Dilutional acidosis and contraction alkalosis of whole blood are complex acid-base disorders resulting from direct changes in bicarbonate concentration in combination with changes in the concentration of weak plasma acids and buffering reactions. Therefore, bicarbonate concentration does not change to the same degree as the magnitude of contraction or dilution.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 29-37 |
| Number of pages | 9 |
| Journal | Translational Research |
| Volume | 157 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2011 |
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Keywords
- ABE
- actual base excess
- AG
- anion gap
- D100
- D30
- dehydration of deoxygenated whole blood trial
- dehydration of oxygenated whole blood trial
- hydration of deoxygenated whole blood trial
- hydration of oxygenated whole blood trial
- pH adjusted to a PCO of 40 mm Hg at the predetermined ABE
- pHadj
- SID
- SIDapp
- SIDeff
- SIG
- standardized bicarbonate for a PCO of 40mm Hg at the predetermined pH
- stHCO
- strong ion difference
- strong ion difference apparent
- strong ion difference effective
- strong ion gap
- W100
- W30
ASJC Scopus subject areas
- Medicine(all)
- Biochemistry, medical
- Public Health, Environmental and Occupational Health
Cite this
The acid-base effects of free water removal from and addition to oxygenated and deoxygenated whole blood : An in vitro model of contraction alkalosis and dilutional acidosis. / Hopper, Katrina; Haskins, Steve C.
In: Translational Research, Vol. 157, No. 1, 01.2011, p. 29-37.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The acid-base effects of free water removal from and addition to oxygenated and deoxygenated whole blood
T2 - An in vitro model of contraction alkalosis and dilutional acidosis
AU - Hopper, Katrina
AU - Haskins, Steve C.
PY - 2011/1
Y1 - 2011/1
N2 - This study was conducted to describe the acid-base effects of hydration and dehydration of oxygenated and deoxygenated whole blood. Whole blood samples from goats were equilibrated in a tonometer to a partial pressure of carbon dioxide of 40 mm Hg and oxygen (PO2) of 100 mm Hg or 30 mm Hg. Contraction alkalosis was achieved by evaporating blood samples to 80% of the original volume. Dilutional acidosis was achieved by increasing the blood sample volume by 20% by addition of sterile water. Acid-base, electrolyte, hemoglobin, lactate, albumin, and phosphorus concentrations were measured at baseline and after dehydration or hydration. A 20% dehydration of whole blood caused a 22% increase in sodium concentration and a significant increase in base excess of +3 mEq/L (P < 0.01); bicarbonate concentration increased only 7% to 9%. A concurrent increase was found in phosphorus, albumin, hemoglobin, and lactate concentrations. A 20% dilution of whole blood caused a 21% decrease in sodium concentration and a significant decrease in base excess of -5 mEq/L (P < 0.01) with an 11% to 15% decrease in bicarbonate concentration. A concurrent decrease was found in phosphorus, albumin, and hemoglobin concentrations. No significant difference was observed between the acid-base effects on oxygenated versus deoxygenated blood in any experiment. Dilutional acidosis and contraction alkalosis of whole blood are complex acid-base disorders resulting from direct changes in bicarbonate concentration in combination with changes in the concentration of weak plasma acids and buffering reactions. Therefore, bicarbonate concentration does not change to the same degree as the magnitude of contraction or dilution.
AB - This study was conducted to describe the acid-base effects of hydration and dehydration of oxygenated and deoxygenated whole blood. Whole blood samples from goats were equilibrated in a tonometer to a partial pressure of carbon dioxide of 40 mm Hg and oxygen (PO2) of 100 mm Hg or 30 mm Hg. Contraction alkalosis was achieved by evaporating blood samples to 80% of the original volume. Dilutional acidosis was achieved by increasing the blood sample volume by 20% by addition of sterile water. Acid-base, electrolyte, hemoglobin, lactate, albumin, and phosphorus concentrations were measured at baseline and after dehydration or hydration. A 20% dehydration of whole blood caused a 22% increase in sodium concentration and a significant increase in base excess of +3 mEq/L (P < 0.01); bicarbonate concentration increased only 7% to 9%. A concurrent increase was found in phosphorus, albumin, hemoglobin, and lactate concentrations. A 20% dilution of whole blood caused a 21% decrease in sodium concentration and a significant decrease in base excess of -5 mEq/L (P < 0.01) with an 11% to 15% decrease in bicarbonate concentration. A concurrent decrease was found in phosphorus, albumin, and hemoglobin concentrations. No significant difference was observed between the acid-base effects on oxygenated versus deoxygenated blood in any experiment. Dilutional acidosis and contraction alkalosis of whole blood are complex acid-base disorders resulting from direct changes in bicarbonate concentration in combination with changes in the concentration of weak plasma acids and buffering reactions. Therefore, bicarbonate concentration does not change to the same degree as the magnitude of contraction or dilution.
KW - ABE
KW - actual base excess
KW - AG
KW - anion gap
KW - D100
KW - D30
KW - dehydration of deoxygenated whole blood trial
KW - dehydration of oxygenated whole blood trial
KW - hydration of deoxygenated whole blood trial
KW - hydration of oxygenated whole blood trial
KW - pH adjusted to a PCO of 40 mm Hg at the predetermined ABE
KW - pHadj
KW - SID
KW - SIDapp
KW - SIDeff
KW - SIG
KW - standardized bicarbonate for a PCO of 40mm Hg at the predetermined pH
KW - stHCO
KW - strong ion difference
KW - strong ion difference apparent
KW - strong ion difference effective
KW - strong ion gap
KW - W100
KW - W30
UR - http://www.scopus.com/inward/record.url?scp=78650004825&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650004825&partnerID=8YFLogxK
U2 - 10.1016/j.trsl.2010.09.006
DO - 10.1016/j.trsl.2010.09.006
M3 - Article
VL - 157
SP - 29
EP - 37
JO - Translational Research
JF - Translational Research
SN - 1931-5244
IS - 1
ER -