Index: firmware/App/Modes/ModeTreatment.c
===================================================================
diff -u -rf70ddc5911bffe11fc5e670c8566164af4b6c88f -r5ab2faa1fb5b29fd9e0e932131211048f29e34c1
--- firmware/App/Modes/ModeTreatment.c	(.../ModeTreatment.c)	(revision f70ddc5911bffe11fc5e670c8566164af4b6c88f)
+++ firmware/App/Modes/ModeTreatment.c	(.../ModeTreatment.c)	(revision 5ab2faa1fb5b29fd9e0e932131211048f29e34c1)
@@ -8,7 +8,7 @@
 * @file    ModeTreatment.c
 *
 * @author  (last)      Sean Nash
-* @date    (last)      22-Apr-2024
+* @date    (last)      06-May-2024
 *
 * @author  (original)  Dara Navaei
 * @date    (original)  05-Nov-2019
@@ -213,6 +213,8 @@
  *************************************************************************/
 U32 transitionToTreatmentMode( void )
 {
+    PRESSURE_LIMIT_CHANGE_RESPONSE_T respRecord;
+
     if ( ( getTestConfigStatus( TEST_CONFIG_RECOVER_TREATMENT ) != TRUE ) || ( getPreviousOperationMode() != DG_MODE_FAUL ) )
     {
         // Initialize treatment mode each time we transition to it
@@ -234,6 +236,13 @@
     // Enable venous bubble detection in treatment mode
     setVenousBubbleDetectionEnabled( TRUE );
 
+    // Read back limits for transmit to UI.
+    respRecord.artPresLimitWindowmmHg     = getTreatmentParameterS32( TREATMENT_PARAM_ART_PRES_LIMIT_WINDOW );
+    respRecord.venPresLimitWindowmmHg     = getTreatmentParameterS32( TREATMENT_PARAM_VEN_PRES_LIMIT_WINDOW );
+    respRecord.venPresLimitAsymmetricmmHg = getTreatmentParameterS32( TREATMENT_PARAM_VEN_PRES_LIMIT_ASYMMETRIC );
+    // Send response
+    sendPressureLimitsChangeResponse( &respRecord );
+
     return currentTreatmentState;
 }
 
@@ -1289,14 +1298,16 @@
     // Check if we are in treatment mode for settings change
     if ( MODE_TREA == currMode )
     {
-        U32 dialVolume = dialRate * ( (U32)( (F32)presTreatmentTimeSecs / (F32)SEC_PER_MIN ) + 1 );   // In mL
+        F32 dialVolumeSoFar    = (F32)( getTreatmentAvgDialysateFlowRate() * ( treatmentTimeMS / TREATMENT_PERIODIC_DATA_LOG_INTERVAL ) ) / (F32)( SEC_PER_MIN );
+        F32 dialVolumeNowToEnd = (F32)( dialRate * CALC_TREAT_TIME_REMAINING_IN_SECS() ) / (F32)( SEC_PER_MIN );
+        F32 dialVolume         = dialVolumeSoFar + dialVolumeNowToEnd; // mL
 
         // Validate new rates
         if ( ( bloodRate >= getU32TreatmentParamLowerRangeLimit( TREATMENT_PARAM_BLOOD_FLOW ) ) &&
              ( bloodRate <= getU32TreatmentParamUpperRangeLimit( TREATMENT_PARAM_BLOOD_FLOW ) ) &&
              ( dialRate >= getU32TreatmentParamLowerRangeLimit( TREATMENT_PARAM_DIALYSATE_FLOW ) ) &&
              ( dialRate <= getU32TreatmentParamUpperRangeLimit( TREATMENT_PARAM_DIALYSATE_FLOW ) ) &&
-             ( dialVolume <= MAX_DIALYSATE_VOLUME_ML ) )
+             ( dialVolume <= (F32)MAX_DIALYSATE_VOLUME_ML ) )
         {
             result = TRUE;
             //  handle blood pump flow rate change
@@ -1504,25 +1515,28 @@
 {
     if ( ++treatmentParamsRangesBroadcastTimerCtr >= getU32OverrideValue( &treatmentParamRangesPublishInterval ) )
     {
+        // Compute values need to assess max dialysate rate with respect to 150L limit.
+        F32 dialVolumeSoFar    = (F32)( getTreatmentAvgDialysateFlowRate() * ( treatmentTimeMS / TREATMENT_PERIODIC_DATA_LOG_INTERVAL ) ) / (F32)( SEC_PER_MIN );
+        F32 maxQd              = ( (F32)MAX_DIALYSATE_VOLUME_ML - dialVolumeSoFar ) / ( (F32)CALC_TREAT_TIME_REMAINING_IN_SECS() / (F32)SEC_PER_MIN );
         // Compute minimum treatment duration
         U32 presTime = ( presTreatmentTimeSecs / SEC_PER_MIN );
         U32 elapseTime = CALC_ELAPSED_TREAT_TIME_IN_MIN();
         U32 minTime = MAX( (elapseTime + 2), getMinTreatmentTimeInMinutes() );  // Treatment duration cannot be < 1 hour. add two minutes to cover rounding and ensure it is valid for next minute
         // Compute maximum treatment duration (from both UF and dialysate volume perspectives)
-        U32 maxTimeRem = ( MAX_UF_VOLUME_ML - (U32)getUltrafiltrationReferenceVolume() ) / ( presUFRate > 0.0 ? (U32)presUFRate : 1 );
+        U32 maxTimeRem = ( MAX_UF_VOLUME_ML - (U32)getUltrafiltrationReferenceVolume() ) / ( presUFRate > 0.0F ? (U32)presUFRate : 1 );
         U32 maxTime1 = minTime + maxTimeRem;
         U32 maxTime2 = MAX_DIALYSATE_VOLUME_ML / getTreatmentParameterU32( TREATMENT_PARAM_DIALYSATE_FLOW );
         U32 maxTime = MAX( maxTime1, maxTime2 );
         // Compute minimum UF volume
         F32 minUFVol = getUltrafiltrationReferenceVolume() + presUFRate;
         // Compute maximum UF volume (considering from adjustment of UF rate and time perspectives)
         F32 maxUFVol1 = minUFVol + ( (F32)( presTime - elapseTime ) * MAX_UF_RATE_ML_MIN );
-        F32 maxUFVol2 = ( presUFRate > 0.0 ? minUFVol + ( (F32)( MAX_TREATMENT_TIME_MINUTES - elapseTime - 1 ) * presUFRate ) : minUFVol );
+        F32 maxUFVol2 = ( presUFRate > 0.0F ? minUFVol + ( (F32)( MAX_TREATMENT_TIME_MINUTES - elapseTime - 1 ) * presUFRate ) : minUFVol );
         F32 maxUFVol = MAX( maxUFVol1, maxUFVol2 );
         // Compute minimum dialysate flow rate
         U32 minDialRate = MIN_DIAL_IN_FLOW_RATE;
         // Compute maximum dialysate flow rate from max dialysate volume perspective
-        U32 maxDialRate = MAX_DIALYSATE_VOLUME_ML / presTime;
+        U32 maxDialRate = ( maxQd > (F32)MIN_DIAL_IN_FLOW_RATE ? (U32)((S32)maxQd) : minDialRate );
 
         // Now ensure maximums do not exceed the literal maximums
         maxTime = MIN( maxTime, MAX_TREATMENT_TIME_MINUTES );
@@ -1552,17 +1566,20 @@
         F32 const arterialPres = getFilteredArterialPressure();
         F32 const venousPres = getFilteredVenousPressure();
 
+        if ( ( TREATMENT_DIALYSIS_STATE == getTreatmentState() ) && ( getDialysisState() != DIALYSIS_SALINE_BOLUS_STATE ) )
+        {
+            treatmentBloodFlowRateTotal_mL_min += getMeasuredBloodFlowRate();
+            treatmentDialysateFlowRateTotal_mL_min += getMeasuredDialInFlowRate();
+            treatmentDialysateTempTotal_degree_C += getDialysateTemperature();
+            treatmentArterialPressureTotal_mmHg += arterialPres;
+            treatmentVenousPressureTotal_mmHg += venousPres;
+        }
+
         lastTreatmentPeriodicDataCollectTimeStamp = treatmentTimeMS;
         bloodFlowRateSum_mL_min += getMeasuredBloodFlowRate();
         dialysateFlowRateSum_mL_min += getMeasuredDialInFlowRate();
         arterialPressureSum_mmHg += arterialPres;
         venousPressureSum_mmHg += venousPres;
-
-        treatmentBloodFlowRateTotal_mL_min += getMeasuredBloodFlowRate();
-        treatmentDialysateFlowRateTotal_mL_min += getMeasuredDialInFlowRate();
-        treatmentDialysateTempTotal_degree_C += getDialysateTemperature();
-        treatmentArterialPressureTotal_mmHg += arterialPres;
-        treatmentVenousPressureTotal_mmHg += venousPres;
     }
 
     if ( ( timeElapsedSinceLastPublish_ms >= TREATMENT_PERIODIC_DATA_PUB_INTERVAL ) || ( TRUE == sendLastTreatmentPeriodicData ) )