Brief Answer:
Can switch to another medication.

Detailed Answer:
Hello, sir! I am Dr. Meriton, welcome to HCM. I understand your concern.

Beta blocker act on bronchi by blocking the beta-adrenergic receptors there. This blockade results in bronchial constriction (narrowing), hence the breathlessness. In your case, beta blocker is being used to prevent bouts of supraventricular arrhythmia (which I am assuming is atrial fibrillation). For this purpose, a beta blocker can be substituted with a calcium channel blocker, such as verapamil or diltiazem, which do not have side effects on the lungs. You should discuss with your cardiologist, about the dosage and frequency of use.

If your symptom does not subside after this substitution is done, then further investigation should be carried out.

I hope I was helpful. If you have follow-up questions, I would be happy to help.

Kind regards,
Dr. Meriton

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Brief Answer:
EKG

Detailed Answer:
Hello and welcome back!

If you have established cases of arrhythmia and you feel lika another episode is happening, once triggered, it should be converted to normal sinus rhythm properly. As a precaution, try to cough hard three or four times. I would recommend you to go the emergency room as soon as possible and get an EKG done, to establish first if this is a burst of arrhythmia. If this is the case, then pharmacological means have to be administered, such as intravenous lanatosid C to slow the heart rate and expect self-converting to normal sinus rhythm, and/or intravenous electrolytes to correct the possible electrolyte disturbances, especially potassium. Antiarrhythmics should be tried, if self-convertin by slowing the heart rate down results unsuccessful. All these measures should be undertaken in a healthcare facility, whete proper monitoring is readily available.

I hope I was of help. If you do not have further clarifications, close the discussion and rate the answer. Good luck!

Best regards,
Dr. Meriton

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