A client is admitted with abdominal pain, distention, fever, dehydration, (+) Cullen's sign and a rigid boardlike abdomen. Which interventions would help control the client's pain in the acute period?
1. Small frequent feedings
2. NG tube to low suction
3. Cimetidine 300 mg IV four times a day
4. Hydromorphone by PCA pump
5. IV isotonic solutions