LBBB in Older Male Athlete - What to expect
Hi all! I'm new to this forum. A little background. I'm 67 year old male, in excellent physical shape - dont smoke, have 117/70 BP, have resting HR 45-50, 6'3" tall, 188lbs, 10% body fat, exercise 2-3 hours daily with some sort of activity from rock and ice climbing, running, road biking, alpine mountaineering, weight lifting, etc.
Several years ago I was experiencing a significant number of PVCs. My doctor at the time was a cardiologist also. He had me do a EKG treadmill stress test. At about 80% of my max, my heart exhibit LBBB symptoms. Last month I was in the ER for a completely different issue. While in a resting state, they did an EKG and were quite alarmed at the LBBB indication. Echocardiogram, cardioCT scan, blood tests, chest x-ray all showed no problems except for the conduction issues messing up the echocardiogram measurements. EF was measured at 50% while resting.
What I read about LBBB has me deeply worried. Words like "heart failure" and all sorts of other nasty stuff. About 3 years ago I had a major accident ice climbing and ended up with some titanium and stainless steel in my body to stich me back together. Ever since then, I get completely winded with the slightest level of exercise. 3 years ago it was no problem to do 8:30min/mile mile after mile. Now I can barely get to a 13min/mile pace for a few miles. I get completely out of breath doing the simplest activities. On top of that, after reading about all the bad stuff LBBB can do to a heart, I've backed way off even considering doing serious high altitude mountaineering.
I'm going in for a nuclear stress test to rule out CAD, which I have no history in me or my family so I'm going to forecast that the relaxed state and exercise state will both show LBBB but no blood starvation to the heart.
So, here's the question - will the Docs look at me and say "Hey your generally healthy, just deal with doing less (a whole lot less)"? Or will they consider a RR CRT pacemaker, which I would be fine with if I properly understand what they do.
Thanks for any thoughts or experiences you want to share as I figure out how to navigate this