However, the most common cause of a decreased heart function is coronary artery disease and may lead to heart failure eventually. Obesity is a severe threat to your life, especially with a BMI of 41.2 (obesity class III). Sleep apnea is a common problem with obese people, but I would also test your cholesterol and perform a stress ECHO to check you for Pulmonary Hypertension.
In addition, I would strongly recommend life style changes, diet & exercise. This is the time; you are still young enough to make a change for the better!
You can read more here:
What you can do:
You can calculate your risks here:
Hope this helps,