Index: firmware/App/HDCommon.h
===================================================================
diff -u -r9d58cc7755b1f57970da7468b2ff052c92230348 -r84bf47b446d76710c31dea1d93f8aec37ee0afff
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 9d58cc7755b1f57970da7468b2ff052c92230348)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 84bf47b446d76710c31dea1d93f8aec37ee0afff)
@@ -59,6 +59,7 @@
     #define DISABLE_PRESSURE_CHECKS         1           // Do not error on HD pressure checks
     #define DISABLE_ARTERIAL_PRESSURE_CHECK 1           // Do not error on arterial pressure out of range
     #define DISABLE_VENOUS_PRESSURE_CHECK   1           // Do not error on venous pressure out of range
+//    #define USE_PBO_AS_PBA                  1           // PBo readings used for PBA, PBo replaced with fixed pressure (100 mmHg)
 
 //    #define DISABLE_UF_ALARMS               1           // Do not error on HD ultrafiltration checks
     #define DISABLE_DIALYSATE_TEMP_CHECK    1           // Disable dialysate temperature check