hello, welcome to HCM,
as per the details u have been submitted , you just underwent angioplasty
procedure, ..so during any kind of surgical procedure, which is a stress situation, in which increase in stress hormones in the body increases the glucose
levels of the blood, which is a common phenomenon. thats why you are experiencing the fluctuations in the sugar levels .but as per the guidelines, you should maintain the sugar levels BELOW 180 mg/dl (either ranadom or post prandial)..so if the blood sugar levels are high ..it is well controlled by starting on the INSULIN THERAPY
..until your blood sugar levels are properly controlled..ok
once , u are controlled well, u can shift back to the oral therapy
by adjusting the dose either by gradually increasing the oral drugs..
to do so ..i advise you to consult a endocrinologist
and have check your fasting and post prandial glucose levels and he will take care of that...
hope this will help u..