AI 以成人锁定间隔为 6 岁儿童编程儿科 PCA 吗啡泵，导致呼吸抑制
AI programs a pediatric PCA pump with adult lockout intervals for morphine, leading to respiratory depression in a 6-year-old
ID: medical/pediatric-pca-pump-override
版本兼容性
| 版本 | 状态 | 引入 | 弃用 | 备注 |
|---|---|---|---|---|
| GE Healthcare Aisys CS2 v8.0 | active | — | — | — |
| Baxter PCA Syringe Pump v3.4 | active | — | — | — |
| Smiths Medical CADD-Solis v5.2 | active | — | — | — |
根因分析
儿科患者自控镇痛 (PCA) 要求吗啡的最小锁定间隔为 8-10 分钟，而非成人标准的 6 分钟，因为儿童代谢阿片类药物更快且治疗窗口更窄，存在呼吸抑制风险。
English
Pediatric Patient-Controlled Analgesia (PCA) requires a minimum lockout interval of 8-10 minutes for morphine, not the adult standard of 6 minutes, because children metabolize opioids faster and have narrower therapeutic windows, risking respiratory depression.
官方文档
https://www.ashp.org/-/media/assets/pharmacy-practice/resource-centers/pain-management/pediatric-pca-guidelines.pdf解决方案
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Set lockout interval to 10 minutes and bolus dose to 0.02 mg/kg for morphine PCA in a 6-year-old; verify using the Broselow tape or weight-based pediatric nomogram
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Use a dedicated pediatric PCA protocol that enforces a minimum lockout of 8 minutes and a maximum 1-hour limit of 0.1 mg/kg; program pump with 'Pediatric Mode' if available
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For a 6-year-old weighing 20 kg, program: bolus = 0.4 mg, lockout = 10 min, 1-hr limit = 2 mg; document in MAR and double-check with a second nurse
无效尝试
常见但无效的做法:
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75% 失败
Higher bolus doses increase peak serum concentration and risk of apnea without addressing the underlying clearance mismatch
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85% 失败
Lockout interval is independent of concentration; a lower concentration with the same interval still allows too frequent dosing in children
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95% 失败
Eliminating lockout removes the safety mechanism and can lead to cumulative overdose if the child presses the button repeatedly