Index: sources/gui/qml/pages/pretreatment/create/PreTreatmentCreate.qml
===================================================================
diff -u -r987ea5bbcaf541b46eb6d1beb9d34ba9e03af709 -rb54264a622d738efdafe842942921b6840828914
--- sources/gui/qml/pages/pretreatment/create/PreTreatmentCreate.qml	(.../PreTreatmentCreate.qml)	(revision 987ea5bbcaf541b46eb6d1beb9d34ba9e03af709)
+++ sources/gui/qml/pages/pretreatment/create/PreTreatmentCreate.qml	(.../PreTreatmentCreate.qml)	(revision b54264a622d738efdafe842942921b6840828914)
@@ -569,6 +569,60 @@
                 value       : vTreatmentRanges.bloodPressureMeasureIntervalDef
                 onPressed   : vTreatmentCreate.bloodPressureMeasureInterval = value
                 onReleased  : vTreatmentCreate.bloodPressureMeasureInterval = value
+                adjustable  : _bloodPressureIntervalSwitch.checked
+                inActiveZero: true
+
+                Switch { id: _bloodPressureIntervalSwitch
+                    property bool active: false
+                    onCheckedChanged: {
+                        if ( ! active ) {
+                            active = true
+                            checked = ! checked
+                        }
+                        vTreatmentCreate.bloodPressureMeasureInterval   = 0
+                        _bloodPressureInterval.value                    = 0
+                        _bloodPressureInterval.active                   = ! checked
+
+                    }
+
+                    x       : width * -1.5
+                    y       : 5     // these values are set to align the switch with slider
+                    width   : 75    // these values are set to align the switch with slider
+                    height  : 85    // these values are set to align the switch with slider
+                    // DEBUG: background      : Rectangle { color : "white" }
+
+                    indicator: Rectangle {
+                        implicitWidth   : Variables.sliderCircleDiameter * 1.7
+                        implicitHeight  : Variables.sliderCircleDiameter - ( Variables.progressbarHandlerBorderWidth * 2 )
+                        radius          : implicitHeight
+                        anchors.centerIn: parent
+                        color           : _bloodPressureIntervalSwitch.checked ? Colors.backgroundButtonSelect  : Colors.createTreatmentInactive
+                        border.color    : _bloodPressureIntervalSwitch.checked ? Colors.borderButton            : Colors.createTreatmentInactive
+                        Rectangle {
+                            property real diameter  : Variables.sliderCircleDiameter
+
+                            x: _bloodPressureIntervalSwitch.checked ? parent.width - width : 0
+                            anchors.verticalCenter: parent.verticalCenter
+                            width   : diameter
+                            height  : diameter
+                            radius  : diameter
+                            color   : _bloodPressureIntervalSwitch.active ? Colors.highlightProgressBar : Colors.createTreatmentInactive
+                            border  {
+                                width: Variables.progressbarHandlerBorderWidth
+                                color: Colors.textMain
+                            }
+                        }
+                    }
+
+                    contentItem: Text {
+                        text    : _bloodPressureIntervalSwitch.checked ? qsTr("ON") : qsTr("OFF")
+                        font    : _bloodPressureIntervalSwitch.font
+                        color   : _bloodPressureIntervalSwitch.active  ? Colors.textMain : Colors.textDisableButton
+                        verticalAlignment: Text.AlignTop
+                        horizontalAlignment: Text.AlignHCenter
+                        anchors.centerIn: parent
+                    }
+                }
             }
 
             SliderCreateTreatment { id: _rinsebackFlowRate
Index: sources/view/hd/adjustment/common/VCommonAdjustmentVitals.cpp
===================================================================
diff -u -r799431fc75a1fbe1b874f08344c009c6b511047d -rb54264a622d738efdafe842942921b6840828914
--- sources/view/hd/adjustment/common/VCommonAdjustmentVitals.cpp	(.../VCommonAdjustmentVitals.cpp)	(revision 799431fc75a1fbe1b874f08344c009c6b511047d)
+++ sources/view/hd/adjustment/common/VCommonAdjustmentVitals.cpp	(.../VCommonAdjustmentVitals.cpp)	(revision b54264a622d738efdafe842942921b6840828914)
@@ -174,6 +174,7 @@
     if ( ! _timerId  ) return; // No timer started or failed starting
     if ( ! _interval ) return; // if interval is 0/OFF return
 
+    // DEBUG: qDebug() << __FUNCTION__ << _counter_sec << _counter_min << _interval << _timerId;
     _counter_sec++;
     if ( _counter_sec % 60 ) return; // only check every minute
 
@@ -189,6 +190,7 @@
 
 void View::VTreatmentVitals::onIntervalChanged()
 {
+    // DEBUG: qDebug() << __FUNCTION__ << _counter_sec << _counter_min << _interval << _timerId;
     if ( _interval ) timerReset();
     else             timerStop (); // Timer stop is resetting timer too.
 }
@@ -202,6 +204,7 @@
 {
     if (   _timerId  ) killTimer(_timerId); // this typically should not happen.
     if ( ! _interval ) return;              // if interval is 0/OFF return
+    // DEBUG: qDebug() << __FUNCTION__ << _counter_sec << _counter_min << _interval << _timerId;
     timerReset();
     _timerId = startTimer(1000); // 1 sec interval which will used as 1 min in timerEvent (easier to debug)
 }
@@ -217,6 +220,7 @@
         _counter_min = 0;
     }
     _counter_sec = 0;
+    // DEBUG: qDebug() << __FUNCTION__ << _counter_sec << _counter_min << _interval << _timerId;
 }
 
 /*!
@@ -226,6 +230,7 @@
 void View::VTreatmentVitals::timerStop()
 {
     if ( ! _timerId  ) return; // No timer started or failed starting
+    // DEBUG: qDebug() << __FUNCTION__ << _counter_sec << _counter_min << _interval << _timerId;
     killTimer(_timerId);
     _timerId        = 0;
     timerReset();