Final answer:
The PN should first check the client with a peptic ulcer who has been vomiting most of the day due to the immediate risk of complications like dehydration and electrolyte imbalances.
Step-by-step explanation:
The practical nurse (PN) should prioritize the client who requires the most urgent attention based on their current condition and potential risk for further complications. Upon receiving the shift report, the PN should immediately check the client diagnosed with a peptic ulcer who has been vomiting most of the day. This client's symptoms suggest that they may be at risk for dehydration, electrolyte imbalances, or even a worsening of their peptic ulcer, potentially leading to a life-threatening situation such as bleeding. Prompt assessment and intervention are crucial for this client's care.
The client with pancreatitis who was admitted yesterday should also be assessed as soon as possible, given the potential for complications such as infection or worsening pain. Meanwhile, the client who returned from dialysis five hours ago should be stable, but still requires regular monitoring for any changes in condition. The client with asthma scheduled for discharge is likely the least urgent, assuming they are stable and their discharge processes are in place.