I'm noticing my heart rate hits around 100 to 120 during the day but drops to 80 to 90 while I'm asleep. I had an ECG done, and it showed sinus tachycardia, but the echo and thyroid results came back normal. What should I do next?

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Dr Ranjith Darla

General Practitioner

MBBS
3+ Yrs

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Given your heart rate of 100-120 during the day and 80-90 at night, along with an ECG showing sinus tachycardia and normal echo and thyroid reports, its important to explore other potential causes. The next steps could include:

Holter Monitor: Wearing a Holter monitor for 24-48 hours can provide detailed information on your heart rate and rhythm throughout the day and night.

Electrolyte Levels: Blood tests to check for electrolyte imbalances that may affect heart rate.

Lifestyle Factors: Evaluate and address lifestyle factors such as caffeine intake, stress, anxiety, and physical activity levels, which can all influence heart rate.

Autonomic Function Tests: Assess autonomic nervous system function to rule out conditions like POTS (postural orthostatic tachycardia syndrome).

Consult with your healthcare provider to discuss these options and determine the appropriate next steps for further evaluation and management.

Dr. Ranjith Suggests...

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Answered 04/07/2025

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