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Two distinct drug classes in which cardiotoxicity can occur are in anti-cancer and antiarrhythmic drugs. Anti-cancer drug classes that cause cardiotoxicity include anthracyclines, monoclonal antibodies, and antimetabolites. This form generally manifests as a progressive form of heart failure, but can also manifest as an harmful arrhythmia. [2]
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.
Antiarrhythmic agents, also known as cardiac dysrhythmia medications, are a class of drugs that are used to suppress abnormally fast rhythms (tachycardias), such as atrial fibrillation, supraventricular tachycardia and ventricular tachycardia.
Proarrhythmia is a new or more frequent occurrence of pre-existing arrhythmias, paradoxically precipitated by antiarrhythmic therapy, which means it is a side effect associated with the administration of some existing antiarrhythmic drugs, as well as drugs for other indications. In other words, it is a tendency of antiarrhythmic drugs to ...
Most patients with drug-induced QT prolongation are asymptomatic and are diagnosed solely by EKG in association with a history of using medications known to cause QT prolongation. [6] A minority of patients are symptomatic and typically present with one or more signs of arrhythmia, such as lightheadedness, syncope, or palpitations. [6]
This is because co-administration of Digoxin with drugs such as thiazides and loop diuretics which can cause hypokalemia, low serum levels of potassium in the blood. This exacerbates the potential for cardiac arrhythmias because the low levels of potassium reduces the amount of K+ at the ATPase pump and increase calcium levels too much which ...
Mexiletine has several uses including the treatment of abnormal heart rhythms or arrhythmias, chronic pain, and myotonia. In general when treating arrhythmias, mexiletine is reserved for use in dangerous heart rhythm disturbances such as ventricular tachycardia. [3] It is of particular use when treating arrhythmias caused by long QT syndrome. [4]
It is important to note that certain medications, such as Milrinone and Digoxin, possess overlapping classifications due to their ability to engage multiple mechanisms of action. Their inotropic properties make cardiactonic agents critical in addressing inadequate perfusion , and acute heart failure conditions including cardiogenic shock , as ...
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related to: arrhythmia caused by medication administration- 262 Neil Avenue # 430, Columbus, Ohio · Directions · (614) 221-7464
