Hello Vijay and welcome
Your mother need to get revised the hypertension
medication. Usually it is safe to use single drug instead of combination of drugs so that we can omit one drug and keep a record of blood pressure. Consult your cardiologist again and discuss about it. Hope this will help you out. Vertin
can help you to get rid from spinning and according to me it is not responsible for the lowered BP.
After surgery the physical activity get lowered and circulation also slows down which finally result in variation in BP. Keep changing the posture every hourly, Do slight movements with the help of walker, do active movements of toes and hands. Other causes to be ruled out are Anemia
. Cervical spondylosis
and ear infection
Hope you got your answer.