Table 1 Composition of human spinal fluid and solutions used in neurosurgery
Component | Normal human CSF | ACF | NS | LR |
|---|---|---|---|---|
Na+ (mEq/L) | 145 | 145 | 154 | 130 |
K+ (mEq/L) | 2.8 | 2.8 | 0 | 4 |
Mg2+ (mEq/L) | 2.2 | 2.2 | 0 | 0 |
Ca2+ (mEq/L) | 2.3 | 2.3 | 0 | 3 |
Cl− (mEq/L) | 111.9 | 129 | 154 | 109 |
P (mmol/L) | 1.1 | 1.1 | 0 | 0 |
HCO3− (mEq/L) | 23.1 | 23.1 | 0 | 0 |
Lactate− (mEq/L) | 0 | 0 | 0 | 28 |
Glucose (g/L) | 0.61 | 0.61 | 0 | 0 |
Osmolality ratio | ≈1 | ≈1 | 1 | ≈0.9 |
pH | 7.307 | ≈7.3 | ≈6.3 | ≈6.7 |