feature: Ward Gateway Service (Local-First Clinical Path)

2026-06-23 16:45:38 +08:00
parent d8e142fffe
commit 1bf8359097
100 changed files with 5474 additions and 4 deletions
@@ -0,0 +1,47 @@
+public static class PlausibilityValidator
+{
+    // Plausible ranges define the outer boundary of physically possible values.
+    // These are NOT clinical thresholds — they catch device malfunctions and typos.
+    private static readonly Dictionary<string, (decimal Min, decimal Max)> _ranges = new()
+    {
+        ["HEART_RATE"]       = (1,    300),
+        ["TEMP_C"]           = (15,   50),
+        ["POTASSIUM_MEQ_L"]  = (0.1m, 12),
+        ["SPO2"]             = (50,   100),
+        ["RESP_RATE"]        = (1,    80),
+        ["WBC_K_UL"]         = (0.1m, 500),
+        ["GLUCOSE_MG_DL"]    = (10,   1000),
+        ["SYSTOLIC_BP"]     = (40,    300),
+        ["DIASTOLIC_BP"]    = (20,    200),
+        ["LACTATE_MMOL_L"]  = (0.1m,  30),
+        ["AVPU"] = (0, 3),
+        ["SUPPLEMENTAL_O2"] = (0, 1),
+        ["GCS_EYE"] = (1, 4),
+        ["GCS_VERBAL"] = (1, 5),
+        ["GCS_MOTOR"] = (1, 6),
+        ["PAO2_MMHG"] = (20, 600),
+        ["FIO2_PCT"] = (21, 100),
+        ["PLATELET_K_UL"] = (1, 1500),
+        ["BILIRUBIN_MG_DL"] = (0.1m, 50),
+        ["CREATININE_MG_DL"] = (0.1m, 20),
+        ["URINE_OUTPUT_ML_H"] = (0, 500),
+    };
+
+    public static bool IsPlausible(string observationCode, decimal value, out string? reason)
+    {
+        if (!_ranges.TryGetValue(observationCode, out var range))
+        {
+            reason = null;
+            return true;
+        }
+
+        if (value < range.Min || value > range.Max)
+        {
+            reason = $"Value {value} is outside the plausible range [{range.Min}–{range.Max}] for {observationCode}.";
+            return false;
+        }
+
+        reason = null;
+        return true;
+    }
+}