Which of the following is NOT associated with delayed CINV?

Delayed chemotherapy-induced nausea and vomiting (CINV) is influenced by several factors, but the patient's age is not directly associated with this type of CINV.

The chemo regimen is critical because certain regimens are more likely to cause delayed symptoms based on the emetogenic potential of the drugs used. The type of drug utilized plays a significant role, as some agents are more likely to induce CINV due to their mechanism of action and pharmacologic properties. Timing of administration is also a key factor; for example, the interval between the infusion of chemotherapy and the onset of nausea can determine whether symptoms are categorized as acute or delayed.

In contrast, a patient's age does not have a direct and consistent impact on the onset of delayed CINV, although physiological factors related to age can affect an individual's overall tolerance to chemotherapy or their overall health status. Therefore, it is the chemotherapy regimen, the specific drugs used, and the timing that are more relevant to the occurrence of delayed CINV than age.