Index: firmware/App/Modes/Dialysis.c
===================================================================
diff -u -rd9fb74cda4b2c4c8f6e36ba3af978fde8e19b3e6 -r1022327683d458b8fc47582784ec4de67783a3a8
--- firmware/App/Modes/Dialysis.c	(.../Dialysis.c)	(revision d9fb74cda4b2c4c8f6e36ba3af978fde8e19b3e6)
+++ firmware/App/Modes/Dialysis.c	(.../Dialysis.c)	(revision 1022327683d458b8fc47582784ec4de67783a3a8)
@@ -1595,6 +1595,9 @@
 
     if ( FALSE == isRequestFromTreatmentStop )
     {
+        // The pressure window is widened to prevent pressure alarm in bypassing the dialysate.
+        // The spike occurs due to flipping VDi valve would result in all of the blood flow going through
+        // the dialyzer and pressure cannot go across the dialyzer.
         signalInitiatePressureStabilization( USE_NORMAL_STABILIZATION_PERIOD );
     }