Overall diagnostic accuracy of VBG improved from 45% to 74% after adjustment. Intraclass correlation coefficients for agreement improved after applying the adjustment rule to venous pH (from 0.84 to 0.93, P <.
VBAG MEDICAL PLUS
Patient has an anion gap metabolic acidosis, but the decrease in bicarbonate is much greater than the elevation in anion gap (indicating the combination of an anion-gap metabolic acidosis plus a non-anion-gap metabolic acidosis). After adjustment, the mean systematic difference (bias) between ABG and VBG pH decreased from 0.035 +/- 0.02 to -0.015 +/- 0.02 and PCO(2) bias decreased from -4.5 +/- 3.5 to 0.5 +/- 3.5. The diagnosis of NAGMA may be made in one of two ways (red arrows above)Patient has normal anion gap with metabolic acidosis (bicarbonate < 22 mM). Reducing Pain by Using Venous Blood Gas Instead of Arterial Blood Gas (VEINART): A Multicentre Randomised Controlled. The overall accuracy of a normal adjusted VBG (aVBG) to predict a normal ABG was 90%. VBG is less painful for patients compared to ABG VBG is easier for the healthcare team compared to ABG VBG provides useful information similar to ABG for physicians in regard to treatment decisions References: Chauvin A et al. We developed a VBG adjustment rule of ABG pH = VBG pH + 0.05, ABG CO(2) = VBG PCO(2) -5 mm Hg from prior studies and validated this relationship with simultaneous venous and arterial blood obtained from 187 medical/surgical intensive care, cardiac catheterization laboratory, and coronary care unit patients with central venous access. We investigated the reliability of the VBG as a substitute for arterial blood gas (ABG) in multiple care settings. Routine use of central venous blood gases (VBGs) may reduce complications from prolonged arterial cannulation.