My 85 Yr Old Husband Is Having Cramps In His

My 85 yr old husband is having cramps in his feet & hands as well as BP of 90/58. He had a triple heart bypass 11/2/16, was readmitted to the hospital on 12/2/16 for excessive fluid around his lung. Two days ago he saw his cardiologist who said everything was fine. Lungs clear. He is on several medications. She reviewed all but didn't feel any changes were warranted. His Primary Care Physician who had seen him last week also felt no changes were warranted.