ABG-HEPARIN-DILUTION
medical
runtime_error
ai_generated
true
AI指示使用肝素化注射器从动脉导管采动脉血气，导致结果不准确
AI instructs to use heparinized syringe for arterial blood gas from an arterial line, causing inaccurate results
ID: medical/art-line-blood-gas-heparin
90%修复率
87%置信度
1证据数
2024-08-22首次发现
版本兼容性
| 版本 | 状态 | 引入 | 弃用 | 备注 |
|---|---|---|---|---|
| Radiometer ABL90 FLEX | active | — | — | — |
| Siemens RAPIDPoint 500 | active | — | — | — |
| GEM Premier 5000 | active | — | — | — |
| BD Vacutainer PST | active | — | — | — |
根因分析
动脉导管死腔含有肝素化冲洗液；必须在采样前抽出3-5 mL弃去。对弃去液使用肝素化注射器或添加过多肝素可能稀释样本，导致pCO2、pO2和电解质假性降低。
English
Arterial line dead space contains heparinized flush solution; aspirating 3-5 mL discard before sample is mandatory. Using heparinized syringes for the discard or adding excess heparin can dilute the sample, causing falsely low pCO2, pO2, and electrolytes.
官方文档
https://www.radiometer.com/en-us/blood-gas-testing/arterial-blood-gas-sampling解决方案
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使用非肝素化注射器采集弃去样本。弃去3-5 mL（或2倍死腔体积）后，连接新的非肝素化注射器采集ABG样本。如果使用预肝素化注射器，确保在采集血液前完全排出液体肝素。
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或者，使用平衡肝素注射器（如PICO70），其液体肝素含量极少，并精确填充至标记线，不要过量。不要额外添加液体肝素。
无效尝试
常见但无效的做法:
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65% 失败
Excessive discard volume can cause iatrogenic anemia in small patients and does not fix the heparin contamination if the syringe itself is heparinized.
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80% 失败
This can cause hemolysis and air bubble introduction, further corrupting pO2 and potassium values.