<unk>  effects (from chrono-, meaning time) are those that change the heart rate.<unk>  drugs may change the heart rate by affecting the nerves controlling the heart, or by changing the rhythm produced by the sinoatrial node. Positive chronotropes increase heart rate; however, negative chronotropes decrease heart rate.
A dromotrope affects Atrioventricular node (AV node) conduction. A positive dromotrope increases AV nodal conduction, and a negative dromotrope decreases AV nodal conduction. A lusitrope is an agent that affects diastolic relaxation.
Many positive inotropes affect preload and afterload.
Chronotropic
Nootropic
Sympatholytic
Sedative
Endothermic
Anorectic
Antineoplastic
Grief