The Predictive Role of Lactate in the Emergency Department in Patients with Severe Dyspnea
Table 7
Analysis of the arterial blood gas, venous blood gas, and mixed ABG/VBG regression model.
Died (15)
Survived (20)
Mann–Whitney
Univariate logistic regression OR (95% CI)
ABG (known FiO2)
P/F median (Q1–Q3)
199.33 (88.57–277.14)
251.19 (188.86–323.1)
0.1306
0.99 (0.984–1.001)
0.094
pO2 median (Q1–Q3), mmHg
62 (58.2–73.4)
63.75 (51.2–74)
0.6745
1 (0.989–1.008)
0.7798
pCO2 median (Q1–Q3), mmHg
36.4 (32.1–63.9)
39.25 (35.35–42.75)
0.915
1.01 (0.969–1.048)
0.6801
pH median (Q1–Q3)
7.38 (7.17–7.46)
7.42 (7.38–7.46)
0.1876
0.01 (0.000–1.485)
0.07
sO2 median (Q1–Q3), %
92.4 (87.5–95.7)
93.85 (87.95–96.2)
0.5586
0.95 (0.869–1.041)
0.2779
HCO3− median (Q1–Q3), mmol/L
20.1 (15–24.1)
25.3 (23.5–26.4)
0.0092
0.74 (0.579–0.937)
0.013
BE median (Q1–Q3), mmol/L
−5.9 (−13.8 do −1.2)
1.25 (−0.9 do 2.3)
0.0115
0.8 (0.661–0.959)
0.0166
LAC median (Q1–Q3), mmol/L
3.3 (1.8–9)
1.15 (0.85–1.7)
<0.0001
1.58 (1.013–2.470)
0.0435
Died (17)
Survived (45)
VBG (known FiO2)
P/F median (Q1–Q3)
108.57 (87.8–127)
140 (87.62–169.52)
0.1445
0.99 (0.976–1.002)
0.1146
pO2 median (Q1–Q3), mmHg
30.7 (25–38.1)
30 (23.2–36.4)
0.7635
1.02 (0.960–1.080)
0.5268
pCO2 median (Q1–Q3), mmHg
44.2 (38.7–56.2)
43.7 (41.6–48.6)
0.6815
1.03 (0.958–1.111)
0.403
pH median (Q1–Q3)
7.34 (7.26–7.39)
7.38 (7.35–7.42)
0.0288
1.05 (0.235–4.658)
0.9516
sO2 median (Q1–Q3), %
42.6 (32.4–72.1)
56 (33.7–67.8)
0.9595
1 (0.970–1.025)
0.8482
HCO3− median (Q1–Q3), mmol/L
21 (17.3–25.2)
24.6 (23.7–25.8)
0.0293
0.95 (0.841–1.064)
0.3555
BE median (Q1–Q3), mmol/L
−3.5 (−6.9–2.5)
1.8 (0–3.2)
0.0465
0.94 (0.857–1.0342)
0.2095
LAC median (Q1–Q3), mmol/L
2.6 (1.5–4.7)
1.7 (1.1–2.25)
0.0135
1.8 (1.129–2.875)
0.0134
Died (38)
Survived (70)
ABG/VBG
P/F median (Q1–Q3)
126.36 (88.19–192.05)
163.81 (103–200)
0.2536
1 (0.992–1.002)
0.3663
pO2 median (Q1–Q3), mmHg
43.05 (26.4–61.4)
36.35 (26.9–50.9)
0.3966
1 (0.994–1.010)
0.5153
pCO2 median (Q1–Q3), mmHg
45.1 (36.4–59)
42.8 (38.5–48.4)
0.4699
1.01 (0.977–1.047)
0.5106
pH median (Q1–Q3)
7.35 (7.17–7.41)
7.39 (7.35–7.43)
0.0117
0.7 (0.200–2.421)
0.5703
sO2 median (Q1–Q3), %
72.45 (34.4–91.4)
67.8 (44.1–87.8)
0.8539
1.01 (0.990–1.024)
0.4065
HCO3− median (Q1–Q3), mmol/L
20.7 (15.6–24.5)
24.7 (23.3–26.2)
0.0003
0.87 (0.788–0.964)
0.0075
BE median (Q1–Q3), mmol/L
−3.55 (−10.3–1.3)
1.5 (−0.9–2.9)
0.0004
0.89 (0.822–0.961)
0.031
LAC median (Q1–Q3), mmol/L
3.15 (1.7–8)
1.5 (1.1–2.2)
<0.0001
1.68 (1.221–2.3064)
0.0014
OR, odds ratio; CI, confidence interval; P/F, PaO2/FiO2 ratio; BE, base excess; LAC, lactate. For the clarity, in each table the P < 0.05 has been highlighted in bold letters.
