I am a 60 year old male.  I had a MI in 1996 and a double by-pass following my attack.  For 6 years the only medication I took was a baby aspirin daily.  At age 50 I developed an atrial fibrillation and had a pacemaker installed.  Now at age 60 my cardiologist suggested an upgrade to a pacemaker that would improve heart function.  Is that an indication that my heart function has deteriorated to the point of not being able to reverse the effects of the CHF and problems I continue to have with fluid in the lungs?
Hello Drafter reading the case details provided by you, I would like to tell you that yes its true that probably your heart function have deteriorated over a period of time that's why you are having fluid accumulation in your lungs. As you have entered your 60s so it's better to upgrade from just a PACEMAKER to a CRT-P Or CRT-D as it will help synchronize your heart rhythm which finally improve the heart function (LVEF) and also prevent sudden cardiac death due to some arrhythmia. Good Luck