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Your mother must be investigated further for Coronary Artery
She must undergo catheterisation and coronary angiography
with a view for possible intervention.
Coronary arteriography is invasive but it is the gold standard for this.
There may be false positives.
If she wants o be doubly sure, the next step is TMT with thallium isotope – will be the ideal way to evaluate ischemia
This is to assess the physiology (function).
If there is a suggestion, the next step is to see the anatomy.
CT angio is non-invasive study for the anatomy.
If positive, she will need catheterisation, anyway.
Wishing speedy recovery