Arotinolol
Arotinolol[edit]
Arotinolol is a non-selective beta blocker with additional alpha-1 adrenergic receptor blocking properties. It is primarily used in the management of hypertension and certain types of cardiac arrhythmias.
Pharmacology[edit]
Arotinolol acts by blocking both beta-adrenergic receptors and alpha-1 adrenergic receptors. This dual action results in a decrease in heart rate, cardiac output, and blood pressure. The blockade of alpha-1 receptors leads to vasodilation, which further contributes to its antihypertensive effects.
Mechanism of Action[edit]
Arotinolol binds to beta-1 and beta-2 adrenergic receptors, inhibiting the effects of catecholamines such as epinephrine and norepinephrine. This results in a reduction of sympathetic nervous system activity, leading to decreased myocardial contractility and heart rate. The alpha-1 blockade causes relaxation of vascular smooth muscle, reducing peripheral vascular resistance.
Clinical Uses[edit]
Arotinolol is used in the treatment of:
- Hypertension
- Angina pectoris
- Certain types of arrhythmias
It may also be used off-label for other cardiovascular conditions where beta blockade is beneficial.
Side Effects[edit]
Common side effects of arotinolol include:
Less common but serious side effects can include:
Contraindications[edit]
Arotinolol should not be used in patients with:
- Asthma or chronic obstructive pulmonary disease (COPD)
- Severe bradycardia
- Cardiogenic shock
- Second or third-degree heart block without a pacemaker
