48 lines
1.6 KiB
C#
48 lines
1.6 KiB
C#
public static class PlausibilityValidator
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{
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// Plausible ranges define the outer boundary of physically possible values.
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// These are NOT clinical thresholds — they catch device malfunctions and typos.
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private static readonly Dictionary<string, (decimal Min, decimal Max)> _ranges = new()
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{
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["HEART_RATE"] = (1, 300),
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["TEMP_C"] = (15, 50),
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["POTASSIUM_MEQ_L"] = (0.1m, 12),
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["SPO2"] = (50, 100),
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["RESP_RATE"] = (1, 80),
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["WBC_K_UL"] = (0.1m, 500),
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["GLUCOSE_MG_DL"] = (10, 1000),
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["SYSTOLIC_BP"] = (40, 300),
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["DIASTOLIC_BP"] = (20, 200),
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["LACTATE_MMOL_L"] = (0.1m, 30),
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["AVPU"] = (0, 3),
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["SUPPLEMENTAL_O2"] = (0, 1),
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["GCS_EYE"] = (1, 4),
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["GCS_VERBAL"] = (1, 5),
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["GCS_MOTOR"] = (1, 6),
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["PAO2_MMHG"] = (20, 600),
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["FIO2_PCT"] = (21, 100),
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["PLATELET_K_UL"] = (1, 1500),
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["BILIRUBIN_MG_DL"] = (0.1m, 50),
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["CREATININE_MG_DL"] = (0.1m, 20),
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["URINE_OUTPUT_ML_H"] = (0, 500),
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};
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public static bool IsPlausible(string observationCode, decimal value, out string? reason)
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{
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if (!_ranges.TryGetValue(observationCode, out var range))
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{
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reason = null;
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return true;
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}
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if (value < range.Min || value > range.Max)
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{
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reason = $"Value {value} is outside the plausible range [{range.Min}–{range.Max}] for {observationCode}.";
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return false;
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}
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reason = null;
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return true;
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}
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}
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