Table 3 Comparison of serum lactate parameters between the persistent and resolved hypomagnesemia groups

Day 2

Persistent

HypoMg

N = 68

Resolved

HypoMg

N = 33

P-value

Lactate level on ICU admission, mmol/L

4.1 (2.0–6.4)

3.6 (2.7–5.4)

0.49

Lactate level on day 2, mmol/L

2.5 (1.5–3.7)

2.0 (1.3–3.3)

0.21

Lactic acidosis on day 2, %

41 (60.1)

15 (45.5)

0.16

Severe lactic acidosis on day 2, %

15 (22.1)

4 (12.1)

0.23

Lactate clearance, %

23.5 (0–54.1)

47.6 (17.2–54.0)

0.12

Day 3

Persistent

HypoMg

N = 35

Resolved

HypoMg

N = 64

P-value

Lactate level on ICU admission, mmol/L

3.8 (1.9–5.4)

3.8 (2.7–6.2)

0.20

Lactate level on day 3, mmol/L

1.8 (1.3–2.3)

1.8 (1.2–2.4)

0.99

Lactic acidosis on day 3, %

12 (34.1)

23 (35.9)

0.87

Severe lactic acidosis on day 3, %

4 (11.4)

6 (9.4)

0.75

Lactate clearance, %

34.6 (9.1–57.1)

51.9 (29.1–69.1)

0.027