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She needs more investigations...
You have not stated your personal habits, family history or co-morbidities, which could have an influence on the diagnosis and outcome...
- HOLTER (24 to 48 hour ambulatory monitoring) is done to analyse and plan for further management, if a routine ECG does not show. It may also detect silent (no symptom) ischemia
- TMT (Treadmill exercise ECG) is done to exclude Ischemia (reduced blood flow- Coronary Artery
- LABORATORY work-up is routine - like blood counts, sugar, urea, electrolytes (potassium in particular), thyroid
(over-active) and so on. Your Internist shall suggest based on the situation.
If there are no clues and if the problem is still bothering to the extent of interfering with life style, she must go for Electro Physiological Studies (EPS)
Wishing speedy recovery