Index: TDDefs.h
===================================================================
diff -u -rc416b53b4723863a6016cf0bae9f466493b32c22 -r3b43acb32a0253d05fd98e65cdcb5e7fb7a41870
--- TDDefs.h	(.../TDDefs.h)	(revision c416b53b4723863a6016cf0bae9f466493b32c22)
+++ TDDefs.h	(.../TDDefs.h)	(revision 3b43acb32a0253d05fd98e65cdcb5e7fb7a41870)
@@ -700,8 +700,9 @@
 /// Enumeration of treatment modality type
 enum Treatment_Modality_Types
 {
-    TREATMENT_MODALITY_HD = 0,                                          ///< Treatment modality Hemodialysis
-    TREATMENT_MODALITY_HDF,                                             ///< Treatment modality Hemodiafiltration
+    TREATMENT_MODALITY_HD_SALINE_FLUID = 0,                             ///< Treatment modality Hemodialysis with saline fluid
+    TREATMENT_MODALITY_HDF_ONLINE_FLUID,                                ///< Treatment modality Hemodiafiltration online fluid
+    TREATMENT_MODALITY_HD_ONLINE_FLUID,                                 ///< Treatment modality Hemodialysis with online fluid
 //    TREATMENT_MODALITY_ISOLATED_UF,                                     ///< Treatment modality Isolated UF  // TODO uncomment in phase 3 when ISO UF feature is required
     NUM_OF_TREATMENT_MODALITY_TYPES                                     ///< Total number of treatment modality types
 };
@@ -890,6 +891,17 @@
 ///< Type for tube set types enumeration
 typedef enum Tube_Set_Types TUBE_SET_TYPE_T;
 
+///< Enumeration of fluid types
+enum Fluid_Types
+{
+    FLUID_TYPE_UNKNOWN = 0,                                             ///< Unknown fluid type
+    FLUID_TYPE_SALINE,                                                  ///< Saline fluid type
+    FLUID_TYPE_SUBSTITUTE,                                              ///< Substitution fluid type
+    NUM_OF_FLUID_TYPES
+};
+///< Type for fluid types enumeration
+typedef enum Fluid_Types FLUID_TYPE_T;
+
 /**@}*/
 
 #endif