Index: firmware/App/Controllers/BloodFlow.h
===================================================================
diff -u -r5dea4d2934a06e63b87c74732d5d5d7756bdc62a -reffc2a8283d6528109b2401bbad70dc554db4e53
--- firmware/App/Controllers/BloodFlow.h	(.../BloodFlow.h)	(revision 5dea4d2934a06e63b87c74732d5d5d7756bdc62a)
+++ firmware/App/Controllers/BloodFlow.h	(.../BloodFlow.h)	(revision effc2a8283d6528109b2401bbad70dc554db4e53)
@@ -38,15 +38,15 @@
 /// Payload record structure for a blood pump data message.
 typedef struct
 {
-    S32 setFlowRate;                                        ///< Set flow rate in mL/min.
-    F32 measFlow;                                           ///< Measured flow rate in mL/min.
-    F32 measRotorSpd;                                       ///< Measured rotor speed in RPM.
-    F32 measPumpSpd;                                        ///< Measured pump speed in RPM.
-    F32 measCurr;                                           ///< Measure motor current in Amps.
-    F32 setRPM;                                             ///< Set motor speed in RPM.
-    U32 rotorCount;                                         ///< Rotor count.
-    U32 presFlow;                                           ///< Prescribed blood flow in mL/min.
-    U32 rotorHall;                                          ///< Rotor hall state (1=home, 0=not home).
+    S32 h4SetFlowRate;                                      ///< Set flow rate in mL/min.
+    F32 h4MeasFlow;                                         ///< Measured flow rate in mL/min.
+    F32 h4MeasRotorSpd;                                     ///< Measured rotor speed in RPM.
+    F32 h4MeasPumpSpd;                                      ///< Measured pump speed in RPM.
+    F32 h4MeasCurr;                                         ///< Measure motor current in Amps.
+    F32 h4SetRPM;                                           ///< Set motor speed in RPM.
+    U32 h4RotorCount;                                       ///< Rotor count.
+    U32 h4PresFlow;                                         ///< Prescribed blood flow in mL/min.
+    U32 h4RotorHallState;                                   ///< Rotor hall state (1=home, 0=not home).
 } BLOOD_PUMP_STATUS_PAYLOAD_T;
 
 // ********** public function prototypes **********