Hello, Thanks for posting your query on Healthcare Magic... * Brief Answer: occupation may be related but more investigations needed to be done .pulmonary stenosis is a cause of right sided heart failure , not related to occupation. *Explanation: My opinion is that congestive heart failure is multifactroial disease: structural. ischemia , hypertension, metabolic syndromes and cardiomyopathy are main causes of such a condition.symptoms include : dyspnea, palpitations , easy fatigability .echocardiogram and other imaging investigations is crucial to diagnose and know the etiology of the case. I suggest my patients the following : exposure to certain chemicals at work, especially in shipyards ,for a long time is risk factor to many occupational diseases,like lung fibrosis, asbestos related lung diseases and that alone may lead to heart failure. The information provided by you is not sufficient to provide a good opinion. If someone comes to me with this condition I would ask them about their respiratory functions, also specific data regarding echocardiography. *Conclusion: I suggest you check for respiratory functions, ask your physician about risk of occupational exposure at your work. If you have any further questions I will be happy to help, If not, you can close the discussion and rate the answer. Wish you good health.