Added HAS-BLED Score

src/app/utils/calculators/Arrhythmias and Anti-Coagulation/HAS-BLED.ts

@@ -0,0 +1,122 @@
+import { Input, Calculator, Values, Interpretation } from "../types"
+
+const parameters:Input[] = [
+    {
+        id:"sbp",
+        type:"number",
+        name:"Systolic Blood Pressure",
+        placeholder:"Enter the Systolic Blood Pressure",
+        min:0,
+        required:true
+    },
+    {
+        id:"rft",
+        type:"checkbox",
+        name:"Renal Function",
+        placeholder:"Whether the patient has/had abnormal renal function",
+        info:"Dialysis, Transplantation or Cr > 2.26 mg/dL"
+    },
+    {
+        id:"lft",
+        type:"checkbox",
+        name:"Liver Function",
+        placeholder:"Whether the patient has abnormal renal function",
+        info:"Cirrhosis or Bilirubin >2x normal or AST/ALT/AP > 3x normal",
+    },
+    {
+        id:"stroke",
+        type:"checkbox",
+        name:"History of stroke",
+        placeholder:"Whether the patient has a history of stroke",
+    },
+    {
+        id:"bleeding",
+        type:"checkbox",
+        name:"History of bleeding",
+        placeholder:"Whether the patient has a history of major bleeding or predeposition to Bleeding"
+    },
+    {
+        id:"inr",
+        type:"checkbox",
+        name:"INR",
+        placeholder:"Does the patient have Labile INR (Unstable/high INR)",
+        info:"Time in Therapeutic Range < 60%"
+    },
+    {
+        id:"age",
+        type:"number",
+        placeholder:"Enter the age",
+        name:"Age",
+        required:true
+    },
+    {
+        id:"alcohol",
+        name:"Prior alcohol usage",
+        type:"checkbox",
+        placeholder:"Whether the patient has a history of alcohol consumption",
+        info:">= 8 drinks/week",
+        required:true
+    },
+    {
+        id:"drugs",
+        name:"Prior drug usage",
+        type:"checkbox",
+        placeholder:"Whether the patient has a history of drug (Antiplatelet, NSAIDs) usage",
+        required:true
+    }
+]
+
+export const HASBLED : Calculator = {
+    id:"hasbled",
+    name:"HAS-BLED Score",
+    desc:"HAS-BLED is a scoring system developed to assess 1-year risk of major bleeding in people taking anticoagulants for AF (atrial fibrillation). Major bleeding is defined as being intracranial bleedings, hospitalization, hemoglobin decrease > 2 g/dL, and/or transfusion.",
+    inputs:parameters,
+    calc_func:(values : Values):number => {
+        const sbp = values.sbp as number;
+        const rft = values.rft as boolean;
+        const lft = values.lft as boolean;
+        const stroke = values.stroke as boolean;
+        const bleeding = values.bleeding as boolean;
+        const inr = values.inr as boolean;
+        const age = values.age as number;
+        const alcohol = values.alcohol as boolean;
+        const drugs = values.drug as boolean;
+        let score = 0;
+        if(sbp > 160) score ++;
+        if(rft) score++;
+        if(lft) score++;
+        if(stroke) score++;
+        if(bleeding) score++;
+        if(inr) score++;
+        if(age > 65) score++;
+        if(alcohol) score++;
+        if(drugs) score++;
+        return score;
+    },
+    interpret_func:(score:number):Interpretation => {
+        if(score <= 1) return {
+            level:"low",
+            message:"There is a low (1-3.5%) risk of bleeding",
+            advice:"Anticoagulations may be considered"
+        }
+        if(score === 2) return {
+            level:"moderate",
+            message:"There is a moderate (4%) risk of bleeding",
+            advice:"Anticoagulations may be considered"            
+        }
+        if(score <= 5) return {
+            level:"high",
+            message:"There is a high (5-9%) risk of bleeding",
+            advice:"Consider alternatives to anticoagulation"
+        }
+        if(score >= 6) return {
+            level:"severe",
+            message:"There is a very high (10+ %) risk of bleeding",
+            advice:"Consider alternatives to anticoagulations"
+        }
+        return {
+            level:"none",
+            message:"Invalid value"
+        };
+    }
+}

src/app/utils/calculators/registry.ts

@@ -8,6 +8,7 @@ import { cha2ds2 } from "./Arrhythmias and Anti-Coagulation/CHA2DS2-VASc-score";
 import { MELDNa } from "./Utilities/MELDNa";
 import { GRACE_Inhosp } from "./Emergency/GRACE_Inhosp";
 import { HEART_Score } from "./General Cardiology/HEART_Score";
+import { HASBLED } from "./Arrhythmias and Anti-Coagulation/HAS-BLED";
 
 export const CalculatorRegistry : Record<string, Section> = {
     generalCardiology:{
@@ -25,7 +26,8 @@ export const CalculatorRegistry : Record<string, Section> = {
         textColor:"#ccc",
         svg:"",
         calculators:[
-            cha2ds2
+            cha2ds2,
+            HASBLED
         ]
     },
     emergency:{