Beta blockers are medicines that block the action of adrenaline on our body.
Can you imagine the adrenaline? His heart pounds and his blood pressure rises. Beta-blockers suppress all these effects. They block receptors for adrenaline and similar substances.
The problem is that there are such receptors in different organs and act in different ways.
If beta blockers only worked in the heart, it would be convenient. But this is not always the case.
According to their action on different receptors, beta-blockers are divided into selective and non-selective.
Selective predominantly on the heart and affect. But not necessarily.
Nonselective acts on a bunch of different receptors with different effects. These are likely to be side effects.
In the lungs, non-selective beta-blockers constrict the bronchi. Patients with bronchial asthma do not like this very much. Even selective beta blockers will not work for these people. Everything is so sensitive there.
For people with arterial disease in the legs and arms, nonselective beta blockers interfere with blood circulation. People have blue fingers, and pulse disappears. Selective beta-blockers work a little better for these people, but still bad.
Our favorite adrenaline also raises our blood sugar. Remember the story when kids get sick of hunger? It's the adrenaline that drives them crazy.
Well, non-selective beta-blockers prevent adrenaline from raising our glucose levels. The blood sugar will drop. Selective beta-blockers are a little better in this regard, but... What? Yes! But not by much.
Most often, non-selective beta-blockers are older and worse than selective ones. But this is not necessary at all. There are also new and cool non-selective beta-blockers, specially tailored to the action of different receptors.
And this is if you do not touch on the fat solubility of beta-blockers and a bunch of various other properties and side effects.
I forgot to ask - why do you need this information?
