Welcome to HCM,
Your mother has multiple medical problems,please do not change any medicine without advice of your treating Physician,
She is diabetic for last many rears so possibility of kidney damage is there as her creatinine
is already 2.1 mg/dl, ACE inhibitor
help in heart failure
as well as kidney protection as she has low LVEF it is right to use very small dose 1.25 mg Ramipril.'
Other medicine are according to her ilness so please continue to take according to prescription.
She is taking Quatan 25 mg very good care of diabetes
and other drug interaction
She has breathlessness it may be related to heart failure or Cardivas which is Beta blocke use ful in heart failure but it can be with hold or dose may be reduced in consultation of your treating Physician.