Final answer:
The nurse should report the low urinary output, the increased pain levels despite medication, and the concerning changes in vital signs to the provider.
Step-by-step explanation:
The nurse should report to the provider the following significant concerns: C. Urinary output, D. Reported pain level, and F. Vital signs. The client's urinary output is significantly low at only 15 mL since 1100, indicating possible urinary retention or inadequate kidney function, which could be due to effects from surgery, medications, or other complications. Additionally, the increase in reported pain level from 6 to 8 out of 10 despite administration of morphine suggests the pain management strategy is currently ineffective and needs to be reassessed. Lastly, the change in vital signs, particularly the increased heart rate from 76 to 116 beats per minute and decreased oxygen saturation from 95% to 93%, could be indicative of a number of complications, including pain response, infection, or other postoperative issues.