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Blood vessels in the neck especially veins are associated closely with heart. Any changes in the heart are transmitted down to these blood vessels.
With the back ground of recent myocardial infarction
it is important to know about his current heart functions. Ejection fraction
above 50% is an indication of normal functioning heart. If this is below 50% (as seen on 2D echocardiography
) high fluid / water intake can lead to worsening of heart failure and one can find visible neck veins.
I wonder if what your father has is the same. Verify if he has breathing problems too. If yes, then it warrants an immediate medical attention.
If he is asymptomatic, then I suggest you to report back to your cardiologist who after careful examination will assess his external jugular vein
pressure (Central venous pressure - CVP) and repeat 2D echocardiogram
. This will give us a clear understanding about his dilated vessels.
Hope this helps.