My mother is experiencing sudden bouts of breathlessness that subside when she lies down. Her Crp, CBC, TSH came normal. However, urinalysis shows numerous epithelial cells and sediments present with all other parameters normal. Her BP and pulse stay within normal range during the bouts of breathlessness. She has no other symptoms, such as fever, pruritis, painful urination, abdominal pain, sore throat, palpitations, chest pain, anxiety and so on. She is currently taking Amplodipine-5mg for HTN and Cartigen-1500 for osteoarthritis. Please advise the issue and basic medication.