Thank you very much.
Well an EKG can not detect or tell enlargement of left artery. It should be enlargement of left ventricle or left atrium.
At this point it is difficult to say how much risk you are at, but definitely following are positive indicators of increased risk of a heart condition in your case.
Age more than 60 yrs.
EKG changes suggestive of enlargement of a cardiac chamber.
And increased CRP levels (which presumably would be highly selective CRP test) also suggest an increased risk of cardiac condition.
You should need a more detailed evaluation now.
Echocardiography, and Angiogram as well (since an EKG can miss any narrowing of blood vessels supplying blood to heart, which an angiogram can detect).
This will direct further management plan, which can be in the form of;
Intervention in the form of stent placement in the heart vessels
A combination of drugs as well as intervention
Daily walk, improved cholesterol levels, good control of blood pressure, all will promise a longevity and good heart status long term.
You should see a cardiologist at earliest, discuss all the details i have mentioned and get a further management plan chalked out that will suit best to your needs.
Wish you good luck.
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I would have been worried too if i were at your place but let me reassure you that this is a treatable condition and carry a good prognosis with appropriate management.