Beta blockers

[razzmatazz]

I've been started on beta blockers for hypertrophic cardiomyopathy, in order to prevent arrhythmias (except for mild palpitations, I have never been symptomatic from an abnormal rhythm, but have had non-sustained VT on Halter monitoring). I am keen to find out as much as possible about the benefits and risks of being on beta blockers in the long term. In particular, I would like to understand how this will affect my heart function going into the future, whether there is likely to be any systemic impact and whether I will eventually be stopped on this medication. Any help on these matters would be much appreciated.

[Nurse Rachel Walker]

Beta blockers are the first line drug used to for most of the symptoms of hypertrophic cardiomyopathy (HCM), and to control rhythm abnormalities associated with it.
They work by blocking the beta receptors on cells, which interfere with the way that adrenaline binds with the cells and lessons its effect. As a result of this, the heart beats more slowly, and with less force. It also causes reduction in the spontaneous firing of what is known as ectopic pacemakers, which is where the non-sustained ventricular tachycardia (VT) originates.

As with all medication, there may be some side effects. The most common are tiredness, dizzy spells, slow pulse and nightmares. However,if it is started at a low dose, and increased gradually, most people tolerate beta blockers very well. If you do have side effects, it is worth speaking to your doctor about trying a different one, as they do affect people differently.

Many people take beta blockers long term with no problems. The body does get used to them and as a result symptoms are likely to return quickly and be noticeable if you stop taking them suddenly.