What could be the cause of rapid heartbeats?

Question

Hello doctor,

I am a 55-year-old woman with no known medical conditions. Recently, I started experiencing cardiac episodes with faster heartbeats. I consulted a cardiologist and underwent some blood tests, which I have attached for your thorough analysis and review. After performing a 12-lead ECG and echocardiogram, my doctor diagnosed me with a left bundle branch block. Initially, I experienced mild dizziness and shortness of breath. I did some home tests, which showed a heart rate of 190 beats per minute for about 10 to 15 minutes, gradually decreasing to a normal rate within half an hour. Following my doctor's advice, I purchased a heart monitor and have been recording the events daily. I am seeking a second opinion and am attaching both my previous and current reports.

Kindly advise.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

I have reviewed your reports (attachment removed to protect patient identity). You are experiencing supraventricular tachycardia and atrial fibrillation. As your heart rate remains elevated, it is difficult to differentiate between the two. However, their management is the same. Atrial fibrillation is generally a benign condition, but it increases the risk of stroke due to clot formation in the heart and its potential dislodgement. You can start taking beta-blockers, such as Metoprolol ER 25 mg once a day, to prevent your heart rate from increasing. Additionally, you may take blood thinners, such as Aspirin or Dabigatran, depending on whether you have coronary artery disease, to help prevent blood clot formation.

Regarding the left bundle branch block (LBBB), it is often age-related or can occur alongside coronary artery disease. In this case, it is important to rule out coronary artery disease associated with LBBB. To do so, you should undergo stress thallium imaging or CT (computed tomography) coronary angiography. You may also repeat the echocardiogram. If it shows decreased heart function, you may need to proceed with coronary angiography.

Your lipid profile is abnormal, and you will need lifestyle changes, including regular exercise. You should start taking Rosuvastatin 10 mg at bedtime. Consult your specialist doctor, discuss with him or her, and take the medicines with take the medicines with their consent.

I hope this helps you.

Thank you.

Answer 2

Hello,

Welcome back to icliniq.com.

Yes, your ECG shows an LBBB pattern. You can take Metoprolol, which is a common medication. You can get a prescription by consulting a local practitioner.

Thanks and regards.