diff --git a/src/entity/emr/emr_registration_emergency.ts b/src/entity/emr/emr_registration_emergency.ts
index b797474..1ab4568 100644
--- a/src/entity/emr/emr_registration_emergency.ts
+++ b/src/entity/emr/emr_registration_emergency.ts
@@ -14,6 +14,7 @@ import { EmrRegistration } from "./emr_registration";
 import { User } from "../users";
 import { DischargeStatusEmergency } from "./emr_discharge_status_emergency";
 import { Room } from "../room";
+import { MainDisease } from "../main_disease";
 
 @Entity("emr_registration_emergency", { schema: "emr" })
 export class EmrRegistrationEmergency {
@@ -158,6 +159,10 @@ export class EmrRegistrationEmergency {
     @Column({ type: "jsonb", nullable: true })
     initial_diagnosis: any[];
 
+    @ManyToOne(() => MainDisease, { onDelete: "CASCADE" })
+    @JoinColumn()
+    main_disease: MainDisease;
+
     @Column()
     @CreateDateColumn()
     created_at: Date;