Index: firmware/App/Monitors/Pressures.c
===================================================================
diff -u -r1c9efd65bc03874ac2beb6efd29b5cb389b0e277 -rbdfb6a7f371e1ac57304c10a9f543509b5751aa9
--- firmware/App/Monitors/Pressures.c	(.../Pressures.c)	(revision 1c9efd65bc03874ac2beb6efd29b5cb389b0e277)
+++ firmware/App/Monitors/Pressures.c	(.../Pressures.c)	(revision bdfb6a7f371e1ac57304c10a9f543509b5751aa9)
@@ -587,14 +587,18 @@
     PRESSURE_STATE_T result = PRESSURE_CONTINUOUS_READ_STATE;
     F32 fpgaArtPres         = getPressure( H2_PRES ) - arterialPressureOffset;
     F32 fpgaVenPres         = getPressure( H14_PRES ) - venousPressureOffset;
-    F32 tmpPres             = fpgaVenPres - ( getDialysatePressure() * PSI_TO_MMHG );
+    F32 tmpPres             = getTMPPressure();
     F32 fpgaBaroPresPSI     = getPressure( H23_PRES );
 
+
     // Filter inline pressure readings
     filterInlinePressureReadings( fpgaArtPres, fpgaVenPres, tmpPres);
     // Filter the baro pressure
     filterBaroPressureReadings( fpgaBaroPresPSI );
 
+    // Get latest dialysate pressure so we can calculate TMP
+    tmpPressure.data = getFilteredVenousPressure() - ( getDialysatePressure() * PSI_TO_MMHG );
+
     // Handle pressure limits state machine
     execPressureLimits();