instruction: hi doctor my dad is 83 years old he keeps coughing up phlegm and sleeping all the time he is cold and his feet are very swollen his feet are so puffy and he feels difficult to wear shoes or walk he weighs about 300 labs he is suffering from congestive heart failure currently he is on lisinopril for blood pressure potassium supplement and furosemide for water retention and cetirizine for allergy symptoms
output: hello for further information consult an internal medicine physician online