Answer
Dopamine hydrochloride increases the force and rate of heart contractions by directly stimulating myocardial beta-adrenergic receptors and indirectly releasing noradrenaline from sympathetic storage sites.
Sources for this answer
- Dopamine Hydrochloride 40mg/ml Concentrate for Solution for InfusionADVANZ Pharma · emc · SmPC §5.1 Pharmacodynamic properties · Version 9Document updated
Sources checked