cardiac stimulant


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cardiac stimulant

a pharmacological agent that increases the action of the heart. Cardiac glycosides increase the force of myocardial contractions and decrease the heart rate and conduction velocity, allowing more time for the ventricles to relax and become filled with blood. These glycosides are used in the treatment of congestive heart failure, atrial flutter and fibrillation, paroxysmal atrial tachycardia, and cardiogenic shock. Toxic signs and symptoms that result from an overdose or the cumulative effect of slowly eliminated digitalis preparations include anorexia, nausea, vomiting, diarrhea, abdominal pain, headache, muscle weakness, confusion, drowsiness, irritability, visual disturbances, bradycardia or tachycardia, ectopic heartbeats, bigeminy, and a pulse deficit. Toxic effects may be attributed to an overdose or decreased growth hormone-releasing factor. Epinephrine, a potent vasopressor and cardiac stimulant, is sometimes used to restore heart rhythm in cardiac arrest but is not used in treating heart failure or cardiogenic shock. Isoproterenol hydrochloride, which is related to epinephrine, may be used in treating heart block. Inamrinone, dobutamine hydrochloride, and dopamine are used in the short-term treatment of cardiac decompensation resulting from depressed contractility.
References in periodicals archive ?
The plant contains flavanoids, irridoids and phenolic acids, which render it alterative, diuretic, lymphatic, vulnerary, anti-inflammatory and a cardiac stimulant.
It is a cardiac stimulant that can lead to severe heart problems.
CONCLUSION: The pilot study revealed cardiac stimulant effect of juice of bulbs of Allium cepa in normal frog ringer solution.
In another example, the skin of the strawberry poison dart frog (Oophaga pumilio) contains compounds that have been reproduced in the laboratory for use as a cardiac stimulant.
Medically, caffeine is useful as a cardiac stimulant and also as a mild diuretic (it increases urine production).
Heptaminol chlorhydrate, a cardiac stimulant and vasodilator, is widely used for the treatment of orthostatic hypotension.
Dr Kenneth Harden, chairman of the BMA's committee of Scottish GPs, said: "Caffeine is a cardiac stimulant, so such drinks could cause the heart to become irregular in vulnerable people.
Contract award notice: Sanitary materials specific to interventional cardiology procedures - sanitary materials and accessories for diagnostic procedures and cardiac stimulants