As a relatively healthy 85 year old male, a geologist and wildcatter and a writer of historical oil field fiction with many wildcats to drill, and many goals left to achieve on my bucket list I need help in overcoming the excessive daytime fatique. I have experienced with worsening fatique over the last several years. I would appreciate any suggestions as to how to overcome this. . I have lived with asymptomatic AFIB for about 6 years, treated with Equuis anti coagulant, and my high blood pressure is normalized with Losartan 100 mg and Lasix. Since I came down with AFIB I discovered I had obstructive sleep apnea and went on CPAP, then when I stayed at 12-14 Sleep Apnea I was moved to BIPIAP 4 months ago and now hooray the apnea is a normal 3. But my daytime fatigue and lack of energy continues to worsen. I have taken two 200 mg Modafinal daily for a couple of years and Modafinal gave me lots of energy originally, but that energy has dissapated today into worse excessive tiredness and lack of energy. Should I go thru the Mayo Clinic at Rochester?