Side effects of analgesic pumps mainly include gastrointestinal dysfunction, poor bowel movement and defecation, urinary retention, headache and allergy, etc. null1. Gastrointestinal dysfunction: patients may experience gastrointestinal dysfunction such as nausea and vomiting, and sometimes there are symptoms such as distension of the epigastric region. null2. Poor bowel movement and defecation: analgesic pumps contain anesthesia drugs, which inhibit gastrointestinal peristalsis, causing symptoms of weakened bowel movement and defecation. null3. null3. urinary retention: because the anesthetic will lead to the bladder forced urinary muscle is restricted, causing the bladder expansion, appear not to be able to urinate on their own. null4. headache: some patients will also have a headache, dizziness and other symptoms. null5. allergy: a small number of patients will have a rash, obvious subcutaneous hemorrhage, and even cardiac function abnormalities, respiratory difficulties and other serious allergic reactions. null6. nullIn short, if patients use analgesic pumps with obvious discomfort, they need to find the attending physician in time to consult. Mainly post-anesthesia adverse reactions, common nausea, vomiting, but also back pain and other side effects. Analgesic pumps are commonly used in the postoperative period to relieve the patient’s pain, achieve the purpose of pain relief and improve the success rate of surgery. Side effects are smaller and less common.