Q. What does the ECG for slow and fast heartbeats show?

Answered by
Dr. Amiya Kumar Chattopadhyay
and medically reviewed by iCliniq medical review team.
Published on Feb 19, 2019

Hello doctor,

I need a few of my ECG’s read from my health records. I have chest pain, sharp that spreads across the chest, shortness of breath, rapid or fluttering heartbeat. Extremely low pulse rate to extremely high. At present, I have not been able to get my heart rate below 120 BMP for a few hours.



Welcome to icliniq.com.

It is not relief of your chest pain only. Diagnosis of your problem and proper treatment has to be started. A beta blocker is effective in lowering fast heart rate but in case of bradycardia, it will further reduce the heart rate. To identify any sinus pause is there or not, Holter monitoring and echocardiography have to be done along with freeT4, T3 and TSH. Sometimes, thyroid function problem may give irregular heartbeat. So, do not worry, do the tests and start treatment accordingly. Attend hospital for the above tests.

Hi doctor,

Thank you so much.



Welcome back to icliniq.com.

You are most welcome.

Hi doctor,

I appreciate your time and responses. My main priority for tonight was to have the ECG’s I attached interpreted. Can you please interpret them? I know your time is valuable and I truly appreciate it. Many thanks.



Welcome back to icliniq.com.

You are having cardiac arrhythmias. As you have already mentioned that you have idiopathic cardiomyopathy. To evaluate both the two conditions and plan proper treatment, I already suggested two things. Due to your fast heart rate (tachycardia) and very slow heart rate (bradycardia) which we call tachybrady arrhythmia which may happen in case of an accessory pathway in the heart- Holter monitoring. For idiopathic cardiomyopathy, you may need to do echocardiography to evaluate the detailed heart function. Do not worry. take an appointment of your cardiologists. Always remember you can solve any problem if you remain calm at the time of stressful situation.

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