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The formula for base deficit is as follows: Base excess = 0.02786 X pCO2 X 10^ (pH - 6.1) + 13.77 X pH - 124.58. References. Siggaard-Andersen O. An acid-base chart for arterial blood with normal and pathophysiological reference areas. Scandinavian Journal of Clinical and Laboratory Investigation 1971, 27 (3): 239-45.
Replacing pK = 6.1, and [CO 2] = 0.03 * pCO 2, and removing the logarithms to get. HCO 3 = 0.03 * pCO 2 * 10 (pH - 6.1) In conjunction with the Siggaard-Anderson equation: B.E. = 0.9287 (HCO 3 - 24.4 + 14.83 (pH - 7.4)) or. B.E. = 0.9287 * HCO 3 + 13.77 * pH - 124.58.
Jun 12, 2016 · Base excess (BE) The base excess is another surrogate marker of metabolic acidosis or alkalosis : A high base excess (> +2mmol/L) indicates that there is a higher than normal amount of HCO 3 – in the blood, which may be due to a primary metabolic alkalosis or a compensated respiratory acidosis.
Nov 3, 2020 · standard base excess is dose of acid or alkali to return the ECF to normal pH (7.40) under standard conditions ( at 37C at a PCO2 of 40 mm Hg) this is the base excess calculated for anaemic blood (Hb = 50g/L)
May 31, 2022 · BB = HCO−3 + A−. The BB considers the non-carbonic buffers and is theoretically CO 2 -independent. Unfortunately, a physiologic inter-subject variability due to different non-carbonic buffer concentrations was noticed [ 5 ].
Feb 15, 2021 · The base excess is the amount of strong acid that is required to return a patient's sample to a pH of 7.4, pCO₂ to 40mmHg and temperature to 37°. Normal Range. -2 to +2. Elevated Base Excess. A base excess greater than +2 suggests the presence of metabolic alkalosis. Causes of Elevated Base Excess.
1.pCO₂. 2.pH. About. Base excess is defined as the amount of strong acid that must be added to each liter of fully oxygenated blood to return the pH to...
