Related Experiment Video
Updated: Sep 21, 2026

Cardiac Stress Test Induced by Dobutamine and Monitored by Cardiac Catheterization in Mice
Published on: February 10, 2013
Hyperdynamic beta-adrenergic circulatory state. A case report
Abstract:
A 22-year-old Japanese male with hyperdynamic beta-adrenergic circulatr without premedication. An abnormal electrocardiographic pattern was observed during the dental treatment, which was analyzed from the standpoint of beta-adrenergic receptors and drugs. During treatment, local anesthetics without adrenergic beta-stimulant would be desirable but premedication with beta blocker may be enough even when anesthetic agents with beta-stimulators are used. Furthermore, premedication with minor tranquilizers is also effective.
Related Concept Videos
Adrenergic Receptors: β Subtype
Isoprenaline > Adrenaline > Noradrenaline
Neurotransmitter binding to these receptors causes activation of adenylyl cyclase resulting in increased concentrations of cAMP and modulation of calcium ion channels within the cell. They are further classified into β1, β2, and β3 subtypes.
β1-adrenoceptors: β1-adrenoceptors have equal affinities for...
Adrenergic Agonists: Therapeutic Uses
Emergency and Intensive Care Unit (ICU) applications: Pressor agents increase blood pressure, heart rate, and contractility in shock and organ failure situations. Dopamine can induce vasodilation and stimulate adrenoceptors. Endogenous catecholamines are effective in treating cardiogenic shock. α2-agonists like clonidine can reverse anesthesia-induced hypertension.
Allergies and anaphylaxis:...
Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers
Adrenergic Antagonists: ɑ and β-Receptor Blockers
Measurement of Blood Pressure
Heart Failure II: Pathophysiology

