Isoprenaline is a synthetic non-selective beta-adrenergic agonist that primarily stimulates beta-1 and beta-2 adrenergic receptors, leading to increased heart rate and bronchodilation. It is clinically significant for managing bradycardia and certain types of asthma or chronic obstructive pulmonary disease (COPD). A key association is its potential to cause tachycardia and arrhythmias, particularly in patients with underlying cardiovascular conditions.