**Core Concept**
The management of shoulder pain after laparoscopic surgery involves a thorough understanding of the pathophysiology and potential causes of this complication. **Postoperative shoulder pain** is a common issue following laparoscopic procedures, often attributed to the positioning and manipulation of the patient during surgery, which can lead to irritation or injury of the nerves and joints in the shoulder region.

**Why the Correct Answer is Right**
The correct next step in management involves the administration of **diclofenac**, a nonsteroidal anti-inflammatory drug (NSAID), which is effective in reducing pain and inflammation in the shoulder region. The mechanism of action of diclofenac involves the inhibition of cyclooxygenase (COX) enzymes, which in turn reduces the production of prostaglandins, leading to a decrease in pain and inflammation. **Local anesthetic infiltration** may also be considered, but diclofenac is generally the first-line treatment for postoperative shoulder pain.

**Why Each Wrong Option is Incorrect**
**Option A:** Administration of opioids may provide temporary pain relief but is not the most effective long-term solution for postoperative shoulder pain. Opioids can also lead to dependence and other side effects.
**Option B:** Rest and physical therapy may be beneficial for patients with shoulder pain, but they are not the immediate next steps in management following laparoscopic surgery.
**Option C:** Corticosteroids may be used to reduce inflammation, but they are not the primary treatment for postoperative shoulder pain.

**Clinical Pearl / High-Yield Fact**
It's essential to recognize that postoperative shoulder pain can be a sign of a more serious underlying condition, such as a nerve injury or joint damage. A thorough evaluation and prompt treatment are crucial to prevent long-term complications.

**Correct Answer:** D. Diclofenac