Posted 2/1/2017 7:25 PM (GMT 0)
Typically, heart valve defects are first noted when the patient presents with a murmur. From the murmur itself, the doctor often cannot determine the cause. An ultrasound (echocardiogram) is usually the first (non-invasive) diagnostic test used to determine the type and severity of the defect. Many valve defects are detected and then monitored with annual echo's for many years before surgery (if any) is necessary.
I was diagnosed with aortic stenosis (narrowing and stiffening of the aortic valve) at age 52. I lived a totally normal life (running, weights, gym 5-6 days a week, travel, etc.) until age 63, when the valve was finally replaced.
As far as enlarged liver and heavy sweating being "aligned" with a murmur, I think you've skipped a few steps in your analysis. The murmur itself is just another symptom that indicates a potential problem with one or more valves or other structures within the heart. The liver and sweating issues may align with regurgitation of one (or more) of the valves, but there are many causes for murmurs - not all linked to regurgitation, and the symptoms you mention may be related to one valve regurgitating, but not the others. (Don't forget - the heart has 4 valves.
Each case is different. Many never do need surgery. Some do. If they say "not now" then just live your life and have it monitored when they tell you to. Definitely see a good cardiologist. If you don't "click" with the doc, find another. Life is too short to have a doctor treat a young person like an oldster.