My father is 95 years and had pacemaker implant in Sep 2012 at Medanta. He was also diagnosed and treated with COPD at Medanta in 2014. He has been leading normal lifestyle til now. However for past two weeks his abnormal parameters are :- Serum urea - 51.4, Serum creatinine - 1.78, Uric Acid - 8.21, Hb - 10.8, BP - 175 / 82, Heart beat - 102, Oxy Saturation - 92 %. There is water retention in his feet upto knees and fingers also. Please advise urgent oral medication. Colonel Sudhir Nethan, 9415103282.