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Dobutamine is a medication used in the treatment of cardiogenic shock (as a result of inadequate tissue perfusion) and severe heart failure. [ 2 ] [ 3 ] It may also be used in certain types of cardiac stress tests . [ 2 ]
Naturally produced hormones norepinephrine and epinephrine or synthetic drugs such as dobutamine can be collectively regarded as beta-agonists. Specifically, dobutamine selectively binds to β1 receptors located on the surface of specialised cardiac muscle cells. [16]
The mechanisms of sympathomimetic drugs can be direct-acting (direct interaction between drug and receptor), such as α-adrenergic agonists, β-adrenergic agonists, and dopaminergic agonists; or indirect-acting (interaction not between drug and receptor), such as MAOIs, COMT inhibitors, release stimulants, and reuptake inhibitors that increase the levels of endogenous catecholamines.
Most agonists of the beta receptors are selective for one or more beta-adrenoreceptors. For example, patients with low heart rate are given beta agonist treatments that are more "cardio-selective" such as dobutamine, which increases the force of contraction of the heart muscle.
The median price increase of the drugs being hiked Jan. 1 is 4.5%, which is in line with the median for all price increases last year. Drugmakers to raise US prices on over 250 medicines starting ...
Some substances do both (e.g. dopamine, dobutamine). If low blood pressure is due to blood loss, then preparations increasing volume of blood circulation—plasma-substituting solutions such as colloid and crystalloid solutions (salt solutions) [1] —will raise the blood pressure without any direct vasopressor activity.
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Norepinephrine (noradrenaline). Although complete selectivity between receptor agonism is rarely achieved, some agents have partial selectivity. NB: the inclusion of a drug in each category just indicates the activity of the drug at that receptor, not necessarily the selectivity of the drug (unless otherwise noted).