Questions: Which diagnosis would the nurse expect for a patient on chemotherapy who developed nausea and vomiting 48 hours after therapy was initiated? Delayed emesis Motion sickness Morning sickness Acute chemotherapy-induced nausea and vomiting (CINV)

The answer is the first one: Delayed emesis.

Explanation for each option:

1. Delayed emesis: This is the correct answer. Delayed emesis refers to nausea and vomiting that occur more than 24 hours after chemotherapy administration. Since the patient developed symptoms 48 hours after therapy, this fits the definition of delayed emesis.

2. Motion sickness: This is incorrect. Motion sickness is caused by repeated motion, such as being in a moving vehicle, and is not related to chemotherapy.

3. Morning sickness: This is incorrect. Morning sickness is a term used to describe nausea and vomiting during pregnancy, typically occurring in the morning, and is unrelated to chemotherapy.

4. Acute chemotherapy-induced nausea and vomiting (CINV): This is incorrect. Acute CINV occurs within the first 24 hours after chemotherapy administration. Since the symptoms appeared 48 hours after therapy, it does not fit the criteria for acute CINV.

In summary, the symptoms described are consistent with delayed emesis, which occurs more than 24 hours after chemotherapy.