Of the following antipsychotics, which would be most likely...

of the following antipsychotics, which would be most likely to cause cardiovascular side effects?
(A) Chlorpromazine (Thorazine).
(B) Thioridazine (Mellaril).
(C) Haloperidol (Haldol).
(D) Droperidol (Inapsine).

Key Concepts

Alpha-Adrenergic Blockade

Alpha-adrenergic blockade is a mechanism by which some antipsychotics cause vasodilation, leading to decreased blood pressure and orthostatic hypotension. This receptor interference can contribute to cardiovascular side effects, making it a critical consideration when evaluating the safety profile of these drugs.

QT Interval Prolongation

QT interval prolongation is an extension of the heart's electrical cycle that can lead to dangerous arrhythmias, such as torsades de pointes. Certain antipsychotic drugs are known to interfere with cardiac ion channels, leading to this prolongation, and thus require careful monitoring, especially in patients with pre-existing heart conditions.

Antipsychotic Medications

Antipsychotic medications are primarily used to treat disorders such as schizophrenia and bipolar disorder. They work by altering the effects of neurotransmitters in the brain, particularly dopamine. These drugs are categorized into typical (first-generation) and atypical (second-generation) antipsychotics, each with distinct side effect profiles and mechanisms of action.

Cardiovascular Side Effects

Cardiovascular side effects refer to the adverse impacts that medications can have on the heart and circulatory system. In the context of antipsychotics, these adverse effects include arrhythmias, hypotension, and, in severe cases, life?threatening conditions such as torsades de pointes, which is a specific type of ventricular tachycardia.

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