antiarrhythmic


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antiarrhythmic

 [an″te-ah-rith´mik]
1. preventing or alleviating cardiac arrhythmias.
2. an agent that has this effect.

an·ti·ar·rhyth·mic

(an'tē-ă-ridh'mik),
Combating an arrhythmia.
Synonym(s): antidysrhythmic

antiarrhythmic

/an·ti·ar·rhyth·mic/ (-ah-rith´mik)
1. preventing or alleviating cardiac arrhythmias.
2. an agent that so acts.

antiarrhythmic

(ăn′tē-ə-rĭth′mĭk, ăn′tī-)
adj.
Preventing or alleviating irregularities in the force or rhythm of the heart.
n.
An antiarrhythmic drug.

antiarrhythmic

[-ərith′mik]
Etymology: Gk, anti + rhythmos, rhythm
1 pertaining to a procedure or substance that prevents, alleviates, or corrects an abnormal cardiac rhythm.
2 an antiarrhythmic agent. A defibrillator that delivers a precordial electric shock is often used to restore a normal rhythm to rapid, irregular atrial or ventricular contractions. A pacemaker may be implanted in a patient with an extremely slow heart rate or another arrhythmia. The electrode catheter of an external pacemaker may be threaded through a vein to the heart in cases of ventricular standstill or complete heart block. The major antiarrhythmic drugs are lidocaine hydrochloride, and a combination of disopyramide phosphate, procainamide hydrochloride, and quinidine. The antiadrenergic blocking agent propranolol hydrochloride may be used in treating arrhythmias. Isoproterenol hydrochloride is indicated for complete heart block and ventricular arrhythmias requiring an increased force of cardiac contractions to establish a normal rhythm. Atropine may be used in the treatment of bradycardia, a sedative in the treatment of tachycardia, and digitalis in the treatment of atrial fibrillation. Calcium channel blockers control arrhythmias by inhibiting calcium ion influx across the plasma membrane of cardiac muscle, thus slowing atrioventricular conduction and prolonging the effective refractory period within the AV node. See also arrhythmia.

antiarrhythmic

adjective Referring to an agent or mechanism that counters cardiac arrhythmias noun An agent that prevents or ameliorates cardiac arrhythmias

antiarrhythmic

1. preventing or alleviating cardiac arrhythmias.
2. an agent that prevents or alleviates cardiac arrhythmias.

antiarrhythmic drugs
include quinidine, procainamide, lidocaine, beta-adrenergic blockers such as propranolol, autonomic drugs including atropine and epinephrine, and digitalis.
References in periodicals archive ?
Based on the results of both the Antiarrhythmics Versus Implantable Defibrillators [AVID] Registry and MUSTT [the Multicenter Unsustained Tachycardia Trial], [ldots] we should be very actively searching in our practices for these patients.
Compare that with the performance of sotalol, which in recent years has been one of the most widely prescribed antiarrhythmic agents for AF.
Continued treatment with an antiarrhythmic drug in the drug-arm patients, compared with no drug treatment in the ablated patients, "is absolutely the explanation" for the observed difference in quality of life, she said.
Prof Blomstrm-Lundqvist said: Using quality of life as the primary endpoint of a trial for the first time, we demonstrated that pulmonary vein isolation is significantly more effective than antiarrhythmic drugs in a mixed population of paroxysmal and persistent AF patients, even at an early stage of their disease.
In contrast, despite a great unmet need for safer antiarrhythmic drugs, developments in this field are expected to be much slower.
The risk of proarrhythmia is present with antiarrhythmic agents, and clinicians are cautioned to assess risk versus benefit before starting any of the agents.
1986) reported that the effects of an ethanol extract of the plant Sophora flavescens Ait possessed antiarrhythmic activity.
Multiple ectopic beats that are causing palpitations, or that occur after a myocardial infarction, can be treated with an antiarrhythmic drug.
Today, an intervention known as catheter ablation may provide a safe and effective alternative to antiarrhythmic medications as a first-line therapy for Afib.
Heart rhythm experts generally prefer patients to have tried and failed at least one antiarrhythmic drug, but that is not mandatory.
Only 13% (83/663) took antiarrhythmic drugs during the 6-month trial.