# AI指示护士用生理盐水而非制造商推荐的稀释剂稀释胰岛素用于静脉输注，导致胰岛素沉淀

- **ID:** `medical/insulin-dilution-error`
- **领域:** medical
- **类别:** config_error
- **错误码:** `INSULIN-PRECIP-003`
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

常规胰岛素（如Humulin R）仅能在特定浓度下与0.9%生理盐水兼容用于静脉输注；高浓度或使用某些胰岛素类似物时会导致沉淀和剂量错误。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| Humulin R U-100 (Eli Lilly) prescribing info 2023 | active | — | — |
| Novolin R (Novo Nordisk) prescribing info 2023 | active | — | — |
| ISMP Guidelines for IV Insulin Infusions 2022 | active | — | — |

## 解决方案

1. ```
   For Humulin R U-100 IV infusion, dilute 100 units (1 mL) in 100 mL of 0.9% NaCl (final concentration 1 unit/mL). Use a dedicated IV line with a 0.22-micron in-line filter. Do not use D5W or lactated Ringer's without checking compatibility. Example: 'Add 1 mL Humulin R U-100 to 100 mL 0.9% NaCl in a PVC bag.'
   ```
2. ```
   For Novolin R, use only 0.9% NaCl for dilution at 1 unit/mL concentration. If D5W is required for other medications, use a Y-site connector with a separate insulin line. Always inspect the solution for turbidity before administration.
   ```

## 无效尝试

- **Use 0.45% NaCl (half-normal saline) as a safer alternative for all insulin dilutions** — Half-normal saline is not recommended for insulin dilution; it can cause hemolysis in IV lines and is not tested for insulin stability. (85% 失败率)
- **Add albumin to the insulin infusion to prevent adsorption to the IV tubing** — Albumin is not recommended for routine insulin infusions; it may cause foaming and inaccurate dosing, and is not approved for this use. (90% 失败率)
- **Mix insulin directly into the IV bag without dilution** — Direct addition without proper dilution can cause insulin aggregation and unpredictable dosing; manufacturer guidelines require specific dilution protocols. (95% 失败率)