Final answer:
A change to parenteral administration of an antipsychotic may be necessary when a client exhibits severe agitation, is unable to take oral medication, or requires a rapid treatment response. Parenteral methods achieve higher plasma levels more quickly and are preferred in acute situations to manage psychotic symptoms and aggressive behaviors.
Step-by-step explanation:
Actions by the client that would necessitate a change to parenteral administration of an antipsychotic may include severe agitation, inability to take oral medication due to vomiting or unconsciousness, or lack of adequate treatment response to oral medications. In cases where an antipsychotic is not easily absorbed in the gastrointestinal (GI) tract or where rapid medication effect is desired, parenteral administration (intravenous or intramuscular injection) becomes the preferred option. This is often due to the higher plasma levels that can be achieved more quickly than with oral medications, which is important in managing acute psychotic episodes or aggressive behaviors.
With neuroleptic drugs, which are a class of antipsychotic medications, we often see that psychotic symptoms such as hallucinations, delusions, and disorganized thinking tend to diminish over time. Additionally, these medications are able to reduce aggressive and impulsive behavior, which could be contributing factors that make parenteral administration more appropriate.
It's important to note that the decision to switch to parenteral administration should be made in collaboration with a healthcare provider, after assessing the client's individual situation and considering factors such as potential side effects, the urgency of the situation, and the client's overall health status.