A 16-year-old presents at the emergency department reporting right lower quadrant pain and is subsequently diagnosed with appendicitis. When planning this client's nursing care, the nurse should prioritize what nursing diagnosis?

Imbalanced Nutrition: Less Than Body Requirements Related to Decreased Oral Intake.

Risk for Infection Related to Possible Rupture of Appendix.

Constipation Related to Decreased Bowel Motility and Decreased Fluid Intake.

Acute Pain Related to Appendicitis.