My 70 year old sister, who is in otherwise good health and very pphysically active began experiencing intolerance to even light activities about two months ago. Her primary physician referred to her a cardiologist after she 'flunked' a treadmill test. In the few minutes she was on the treadmill, her heart rate dropped dramatically and she was unable to continue. She was referred to a cardiologist. The cardiologist said she had a Mobitz 2 heart block and would have to have a pacemaker.
Her tolerance to activity continues to decrease. Example: making the bed in the morning induces weakness, light-headedness, etc and she will lay down for a while to regain the ability to continue. She also has minor 'self-diagnosed' symptoms of GRD.
Questions:
How long can the placement of a Pacemaker be reasonably delayed? Weeks? Months?
Would it be best to do further tests to determine the underlying cause of this arryhthmia before proceeding with the pacemaker? Namely, rule out ischemic heart disease/ CAD by doing such things as a Persantine Test and/or an angiogram?
If the underlying cause of the Mobitz ll was CAD and that was treated, would it negate the need for a pacemaker?
Thank you for your advice and opinons.