Which client should be seen first in the emergency department?

The client with a pulsatile abdominal mass should be seen first in the emergency department due to the immediate life-threatening nature of this condition. A pulsatile abdominal mass raises the suspicion of an abdominal aortic aneurysm (AAA), which can rupture. This condition can rapidly lead to severe internal bleeding and is often fatal without urgent surgical intervention.

In an emergency setting, prioritization is based on the potential for life-threatening conditions. The presence of a pulsatile mass strongly indicates a possible vascular emergency that requires immediate evaluation and treatment to prevent catastrophic outcomes. Addressing this client's needs promptly is critical to improving their chances of survival.

In contrast, while the other clients present with concerning symptoms, such as fever, dysuria, abdominal pain, and fever with pain suggestive of possible appendicitis or diverticulitis, none exhibit the same immediate risk of life-threatening damage as the patient with the pulsatile abdominal mass. Therefore, they can be seen after the more critical case is assessed and treated.