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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
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.
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.
Nov 3, 2020 · OVERVIEW. base excess is used as an indicator of the degree of metabolic disturbance. BICARBONATE. The problem with bicarbonate. Bicarbonate levels are not an ideal indicator of either metabolic or respiratory components of acid-base disturbance because it is affected by both.
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.
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 ].
Estimation. Base excess can be estimated from the bicarbonate concentration ( [HCO 3− ]) and pH by the equation: [4] with units of mEq/L. The same can be alternatively expressed as. Calculations are based on the Henderson-Hasselbalch equation: Ultimately the end result is: Interpretation. Base excess beyond the reference range indicates.
