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Although relatively rare, oral antiarrhythmic medications may be proarrhythmic in some dogs; consequently, appropriate monitoring and follow-up is recommended. [2] [11] The ideal therapy for Boxer cardiomyopathy would be implantation of an implantable cardioverter-defibrillator (ICD). This has been attempted in a limited number of dogs. [12]
pimobendan – phosphodiesterase 3 inhibitor used to manage heart failure in dogs; pirlimycin – antimicrobial; ponazuril – anticoccidial; praziquantel – treatment of infestations of the tapeworms Dipylidium caninum, Taenia pisiformis, Echinococcus granulosus; prazosin – sympatholytic used in hypertension and abnormal muscle contractions
The following are medications commonly prescribed cardiac pharmaceutical agents. The specificity of the following medications is highly variable, and often are not particularly specific to a given class. As such, they are listed as are commonly accepted.
Several groups of drugs slow conduction through the heart, without actually preventing an arrhythmia. These drugs can be used to "rate control" a fast rhythm and make it physically tolerable for the patient. [citation needed] Some arrhythmias promote blood clotting within the heart and increase the risk of embolus and stroke.
In fact, many vets won't recommend any treatment at all until a heart murmur reaches a more progressive stage. Remember--the intensity of the sound does not correlate to the severity of the problem!
They act by blocking the effects of catecholamines at the β 1-adrenergic receptors, thereby decreasing sympathetic activity on the heart, which reduces intracellular cAMP levels and hence reduces Ca 2+ influx. These agents are particularly useful in the treatment of supraventricular tachycardias. They decrease conduction through the AV node.