<s>[INST] I am worried about my Dad's family history of CHF and he is ALWAYS having terrible sinus drainage. Can this be related to a heart problem at all? I know congestion is related, but can this drainage be related? He has had one stent put in the past. The sinus drainage has gotten worse and worse and he is always coughing. He goes to the VA for check ups, but I am just worried they may be missing something. He says that he feels fine otherwise with no chest pain, but he does get SOB with increased activity and requires frequent rest breaks. [/INST] Hello!Thank you for asking on HCM!Regarding your concern, I would explain that sinus drainage is not related to CHF. It may be just a chronic sinus infection or an allergic reaction. I would recommend performing some allergy tests and a sinus discharge bacterial culture to investigate for the possible causes. Considering the fact that he has one coronary stent and has chronic cough, I would recommend performing a cardiac ultrasound and resting ECG to evaluate his cardiac function and exclude possible heart failure. Hope you will find this answer helpful!Best wishes, Dr. Iliri </s>