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|Title:||Cardiovascular adverse effects of antipsychotic drugs|
|Citation:||Drug Safety, 2000; 23(3):215-228|
|Publisher:||Adis International Ltd|
|Abstract:||Minor cardiovascular adverse effects from antipsychotic drugs are extremely common. They include effects such as postural hypotension and tachycardia due to anticholinergic or alpha1-adrenoceptor blockade, and may occur in the majority of patients at therapeutic dosages. There are a number of pharmacological effects that are of uncertain clinical significance, such as blockade of calmodulin, sodium and calcium channels and alpha2-adrenoceptors in the central nervous system. The most serious consequences of treatment, arrhythmias and sudden death, are probably uncommon and are most likely to be caused primarily by blockade of cardiac potassium channels such as HERG. Incomplete evidence suggests that arrhythmias and sudden death are a particular problem with certain drugs (thioridazine and droperidol), high risk populations (elderly, pre-existing cardiovascular disease, inherited disorders of cardiac ion channels or of antipsychotic drug metabolism) or people taking interacting drugs (such as drugs that prolong the QT interval, e.g. tricyclic antidepressants, drugs that inhibit antipsychotic drug metabolism, or diuretics). Clozapine may be unique in also causing death from myocarditis and cardiomyopathy. Much further research is required to more clearly identify high risk drugs and the populations that are at risk of sudden death, as well as the mechanisms involved and the extent of the risk.|
|Keywords:||Cardiovascular System; Humans; Hypotension, Orthostatic; Death, Sudden; Calmodulin; Potassium Channels; Sodium Channels; Antipsychotic Agents; Drug Interactions; Adult; Aged; Clinical Trials as Topic; Drug Overdose|
|Appears in Collections:||Pharmacology publications|
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