For the models, in their infoText functions, use QStringLiteral when generating the string that is getting returned, if possible. (https://doc.qt.io/archives/qt-5.15/qstring.html#QStringLiteral)
lowVenousPressureExemptCheck - flag initialized to TRUE in the Init routine. Whenever valve opens (fill), it resets the flag to "FALSE" ,the Exempt counter is not incremented. When valve closes, flag is set back to TRUE and Exempt counter being incremented.