PUMP-BASAL-ERR-03 medical config_error ai_generated partial

AI programs an insulin pump with a 24-hour basal rate profile that ignores circadian insulin sensitivity, causing nocturnal hypoglycemia in a Type 1 diabetic

ID: medical/insulin-pump-basal-rate-circadian

Also available as: JSON · Markdown · 中文
80%Fix Rate
86%Confidence
1Evidence
2024-05-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Medtronic MiniMed 780G v3.2 active — — —
Tandem t:slim X2 v2.7 active — — —
Insulet Omnipod 5 v1.4 active — — —

Root Cause

The AI set a constant basal rate (e.g., 0.8 U/h) across 24 hours, failing to account for the dawn phenomenon (increased insulin need 3-8 AM) and nocturnal insulin sensitivity (decreased need 12-3 AM), resulting in hypoglycemia at 2-3 AM.

generic

中文

AI设置了24小时恒定基础率（如0.8 U/h），未考虑黎明现象（3-8 AM胰岛素需求增加）和夜间胰岛素敏感性（12-3 AM需求减少），导致凌晨2-3点低血糖。

Official Documentation

https://www.diabetes.org/technology/insulin-pumps

Workarounds

  1. 90% success Program a multi-step basal profile: 12 AM-3 AM: 0.5 U/h, 3 AM-8 AM: 1.0 U/h (dawn phenomenon), 8 AM-12 PM: 0.8 U/h, 12 PM-6 PM: 0.7 U/h, 6 PM-12 AM: 0.6 U/h. Validate with 3-day CGM data. 
    Program a multi-step basal profile: 12 AM-3 AM: 0.5 U/h, 3 AM-8 AM: 1.0 U/h (dawn phenomenon), 8 AM-12 PM: 0.8 U/h, 12 PM-6 PM: 0.7 U/h, 6 PM-12 AM: 0.6 U/h. Validate with 3-day CGM data.
  2. 85% success Use the pump's built-in 'Basal Pattern' feature to create a 'Night Safe' pattern with reduced rate 12-3 AM. Set low-glucose suspend threshold at 70 mg/dL. Train patient on pattern switching. 
    Use the pump's built-in 'Basal Pattern' feature to create a 'Night Safe' pattern with reduced rate 12-3 AM. Set low-glucose suspend threshold at 70 mg/dL. Train patient on pattern switching.
  3. 80% success Implement an algorithm in the pump management software that adjusts basal rates based on historical CGM data and circadian models. Example: 'AutoBasalCircadian' script that analyzes 14-day glucose patterns. 
    Implement an algorithm in the pump management software that adjusts basal rates based on historical CGM data and circadian models. Example: 'AutoBasalCircadian' script that analyzes 14-day glucose patterns.

中文步骤

  1. Program a multi-step basal profile: 12 AM-3 AM: 0.5 U/h, 3 AM-8 AM: 1.0 U/h (dawn phenomenon), 8 AM-12 PM: 0.8 U/h, 12 PM-6 PM: 0.7 U/h, 6 PM-12 AM: 0.6 U/h. Validate with 3-day CGM data.
  2. Use the pump's built-in 'Basal Pattern' feature to create a 'Night Safe' pattern with reduced rate 12-3 AM. Set low-glucose suspend threshold at 70 mg/dL. Train patient on pattern switching.
  3. Implement an algorithm in the pump management software that adjusts basal rates based on historical CGM data and circadian models. Example: 'AutoBasalCircadian' script that analyzes 14-day glucose patterns.

Dead Ends

Common approaches that don't work:

  1. 70% fail

    Uniform reduction may still cause nocturnal hypoglycemia if the rate during 12-3 AM is still too high, and may cause daytime hyperglycemia.

  2. 65% fail

    This ignores the dawn phenomenon; the rate may be too low for 3-8 AM, causing hyperglycemia upon waking.

  3. 90% fail

    This removes a critical safety feature that can prevent severe hypoglycemia; the root cause (incorrect basal profile) remains unaddressed.