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. 2023 Jun 7;33(4):973–984. doi: 10.1007/s00062-023-01296-w

Table 5.

Correlation analysis between ischemic ABG parameters and infarct extent before and after vessel recanalization

Ischemic Parameter ASPECTS at admission ASPECTS at 24–48 h ∆ ASPECTS
rs (95% CI) P rs (95% CI) P rs (95% CI) P
pH 0.18 (−0.13–0.46) 0.23 −0.02 (−0.32–0.29) 0.89 0.21 (−0.1–0.48) 0.17
paCO2 (mm Hg) 0.15 (−0.16–0.44) 0.33 0.09 (−0.23–0.37) 0.61 0.1 (−0.21–0.39) 0.53
paO2 (mm Hg) −0.13 (−0.42–0.19) 0.41 −0.02 (−0.32–0.29) 0.9 −0.07 (−0.36–0.24) 0.67
HCO3− std (mmol/L) 0.23 (−0.09–0.5) 0.14 0.02 (−0.29–0.32) 0.89 0.26 (−0.05–0.2) 0.09
BE (B) (mmol/L) 0.23 (−0.08–0.5) 0.14 0.02 (−0.28–0.33) 0.88 0.26 (−0.05–0.52) 0.09
ctCO2 (mmol/L) 0.21 (−0.1–0.49) 0.16 0.01 (−0.3–0.31) 0.97 0.27 (−0.04–0.53) 0.07
Hct (%) 0.18 (−0.17–0.49) 0.29 0.06 (−0.28–0.39) 0.72 0.1 (−0.25–0.42) 0.56
tHb (g/dl) 0.18 (−0.16–0.49) 0.28 0.07 (−0.26–0.4) 0.69 0.09 (−0.26–0.41) 0.62
sO2 (%) −0.1 (−0.43–0.24) 0.54 0.04 (−0.3–0.37) 0.83 −0.21 (−0.51–0.13) 0.21
O2Hb (%) −0.02 (−0.35–0.32) 0.93 0.1 (−0.25–0.42) 0.56 −0.15 (−0.46–0.2) 0.39
COHb (%) 0.04 (−0.37–0.31) 0.84 −0.04 (−0.37–0.3) 0.82 −0.12 (−0.44–0.23) 0.5
MetHb (%) −0.2 (−0.51–0.15) 0.25 −0.11 (−0.43–0.24) 0.54 −0.06 (−0.39–0.28) 0.71
HHb (%) 0.11 (−0.24–0.43) 0.53 −0.04 (−0.37–0.31) 0.83 0.21 (−0.13–0.51) 0.21
Na+ (mmol/L) −0.13 (−0.41–0.17) 0.39 −0.34 (−0.58–−0.05) 0.02 0.42 (0.14–0.64) 0.0033
K+ (mmol/L) 0.3 (0.00–0.55) 0.041 0.02 (−0.28–0.31) 0.91 0.24 (−0.06–0.5) 0.1
Na+:K+ ratio −0.32 (−0.56–−0.02) 0.031 −0.09 (−0.38–0.22) 0.57 −0.15 (−0.43–0.16) 0.33
iCa2+ (mmol/L) 0.26 (−0.05–0.52) 0.09 0.01 (−0.3–0.31) 0.97 0.21 (−0.1–0.48) 0.17
Cl− (mmol/L) −0.35 (−0.59–−0.06) 0.018 −0.2 (−0.47–0.11) 0.19 −0.07 (−0.36–0.24) 0.66
Glu (mg/dl) 0.06 (−0.24–0.35) 0.69 0.04 (−0.26–0.33) 0.78 −0.0043 (−0.03–0.29) 0.98

All parameters were tested by Spearman’s rank correlation coefficient (rs) and are given with 95% confidence interval (CI). A two-sided P value of < 0.05 was used to determine statistical significance. ASPECTS Alberta Stroke Program Early CT Score, BE (B) base deviation in plasma, Cl− chloride ion concentration, COHb carboxyhemoglobin, ctCO2 total content of CO2, HCO3− std standard bicarbonate, Glu glucose, Hct hematocrit, HHb deoxyhemoglobin, iCa2+ ionized calcium ion concentration, K+ potassium ion concentration, MetHb methemoglobin, Na+ sodium ion concentration, Na+:K+ ratio sodium-to-potassium ratio, O2Hb fractional oxyhemoglobin, paCO2 arterial partial pressure of carbon dioxide, paO2 arterial partial pressure of oxygen, sO2 oxygen saturation of hemoglobin, tHb total hemoglobin