免费阴离子间隙计算器
计算血清阴离子间隙，辅助代谢性酸中毒诊断。
Anion Gap
12 mEq/L
Anion Gap vs Sodium (Na+)
公式
Anion Gap Formula
AG = Na+ - Cl- - HCO3-
Normal Range
Normal anion gap: 8-12 mEq/L (without potassium)
Albumin Correction
Corrected AG = AG + 2.5 x (4.0 - Albumin)
Low albumin can mask an elevated anion gap.
Common Causes of Elevated Anion Gap (MUDPILES)
Methanol, Uremia, Diabetic ketoacidosis, Propylene glycol, Iron/Isoniazid, Lactic acidosis, Ethylene glycol, Salicylates
计算示例
Na 140, Cl 104, HCO3 24, Albumin 4.0.
- 01AG = 140 - 104 - 24 = 12 mEq/L
- 02Corrected AG = 12 + 2.5 x (4.0 - 4.0) = 12
- 03Normal anion gap (8-12)
常见问题
What is the anion gap?
The anion gap represents the difference between measured cations and anions in the blood. It helps identify the cause of metabolic acidosis.
What causes a high anion gap?
Common causes include diabetic ketoacidosis (DKA), lactic acidosis, kidney failure, and toxic ingestions like methanol or ethylene glycol.
Why correct for albumin?
Albumin is a negatively charged protein. Low albumin levels reduce the anion gap, potentially masking an acidosis. The correction adds 2.5 for each g/dL albumin is below 4.0.
学习