What Are the Different Types of Beta Blocker Drugs?

Beta blockers (French: Bêta-bloquants; English: Beta blockers), also known as beta blockers , beta blockers , beta blockers , beta blockers , or beta blockers Withdrawal drugs are a class of drugs used to treat arrhythmias, prevent second heart attacks after a heart attack (secondary prevention), and in some cases treat high blood pressure.

Basic Information

Chinese name

beta receptor blocker

Foreign name

-receptor antagonists

Function

Antagonistic beta receptor effect

Species

Non-selective 12 and 1 receptor blockers

Beta receptor blocking pharmacological effects

1. receptor blocking effect

Inhibiting the heart: By blocking the heart's ₁ receptors, the myocardial contractility is weakened, heart rate is slowed, conduction is slowed, cardiac output is reduced, and myocardial oxygen consumption is reduced.

Blood vessels and blood pressure: By blocking the ₂ receptors on vascular smooth muscle, coupled with the inhibition of heart function, it reflexively excites sympathetic nerves, causing vasoconstriction, increasing peripheral resistance, and reducing blood flow in blood vessels.

Bronchi: Block the ₂ receptors on the bronchial smooth muscle, contract the bronchial smooth muscle, and increase the resistance of the respiratory tract.

Inhibition of metabolism: Inhibition of glycogen and lipolysis, inhibition of hyperglycemia caused by adrenaline.

2. Intrinsic sympathetic activity

While blocking the beta receptor, it also has a weak beta receptor agonistic effect.

3. Membrane stabilization

Certain -receptor blockers can stabilize nerve cell membranes to produce local anesthesia-like effects and stabilize cardiac cell membranes.

Beta receptor blocker

Arrhythmia

Effective for arrhythmias caused by various reasons.

2. Hypertension

Reduce blood pressure in patients with hypertension, accompanied by slower heart rate.

3. Angina Pectoris

It has a good effect on typical angina pectoris and can improve heart function.

4. Hyperthyroidism

Used to reduce basal metabolic rate, slow heart rate, control irritability, tachycardia and other symptoms.

Beta receptor blocker adverse reactions

General reaction

Gastrointestinal symptoms such as nausea, vomiting, and mild diarrhea. Can also cause allergic reactions such as rash, thrombocytopenia.

2. Inhibit heart function

Causes sinus tachycardia, atrioventricular block, and acute cardiac insufficiency.

3. Inducing or exacerbating bronchial asthma

4. Bounce phenomenon

Abrupt discontinuation of long-term use of beta-blockers often aggravates the original disease.

5. Other

Causes symptoms such as fatigue, insomnia, and depression.

Precautions for beta blockers

Patients with asthma, mental illness, diabetes, etc. should use or disable such drugs with caution. This class of drugs can cause a rebound phenomenon, so long-term use of such drugs, do not stop the drug suddenly, should be gradually reduced after the condition is controlled.

(Note: The above content is only for introduction, the drug use must be carried out by a regular hospital under the guidance of a doctor.)