Risk Factors for Postoperative Shoulder-tip Pain After Laparoscopic Surgery Undergoing General Anesthesia

Compare the inpatient department difference between two groups.The inpatient department include the department of gynecology, gastrointestinal surgery and hepatolugical surgery.The investigators read the medical record to find out which department the patient is in.

Compare sex(male or female)difference between two groups.

Compare age difference between two groups.

Compare BMI difference between two groups.First,investigators get the weight(kg）and height(m) of the patient from medical record.Then BMI(kg/m^2) is calculated with the formula,weight(kg)/height(m)^2.

Compare ASA grade difference between two groups.The ASA grade includes five grades(Ⅰ,Ⅱ,Ⅲ,Ⅳ,Ⅴ）.The investigators collect this information from the anesthesia record.

Compare operative position difference between two groups.The operative position include lateral position,trendelenburg position and feet-down tilt position.The investigators collect this information from the anesthesia record.

Compare the use of peritoneal drainage difference(used or unused) between two groups.The investigators collect this information from operation record.

Compare operative duration(minutes) between two groups.The investigators collect this information from operation record.

Compare the use of sufentanil difference(used or unused)between two groups.The investigators collect this information from the anesthesia record.

Compare the use of fentanyl difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of remifentanil difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of morphine difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of butophanol difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of sevoflurane difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of flubiprofen difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of parecoxib difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of dezocine difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of tramadol difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of intravenous lidocaine difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of dexamethasone difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of methylprednisolone difference(used or unused) between two groups.The investigators collect this information from the anesthesia record.

Compare the use of deep neuromuscular block difference(used or unused) when undergoing general anesthesia between two groups.Neuromuscular block was monitored using post-tetanic-count(PTC) stimulation by a muscle relaxation monitor.If the PTC is within 1-2,the neuromuscular block of patient is deep.If not, the neuromuscular block of patient is not deep.The investigators collect this information from the anesthesia record.

Compare the use of peripheral nerve block difference(used or unused) when undergoing general anesthesia between two groups.The types of peripheral nerve block in our study include ilioinguinal and iliohypogastric nerve blocks,transversus abdominis plane block(TAP) and rectus sheath block(RSB).Patients who using any kind of the above peripheral nerve block belong to the group that is using peripheral nerve block when undergoing general anesthesia.The investigators collect this information from the anesthesia record.

Compare the use of tracer-site infiltration with ropinvacaine difference(used or unused) when undergoing general anesthesia between two groups.The investigators collect this information from the anesthesia record.

Compare the use of patient-controlled intravenous analgesia(PCIA) difference(used or unused) after laparoscopic surgery.The drugs for patients using PCIA to control pain are different but the investigators ignore the difference of the drug composition.As long as the patient uses PCIA,he or she belongs to the using group.The investigators collect this information from the anesthesia record.

Calculate and find out the incidence of postoperative shoulder-tip pain after laparoscopic surgery undergoing general anesthesia.First,the investigators pay the follow-up visit to the patients two days after laparoscopy asking them vocally if they have postoperative shoulder-tip pain.Then the investigators count the number of people who have postoperative shoulder-tip pain after laparoscopic surgery(N1) and the number of people who don't have postoperative shoulder-tip pain after laparoscopic surgery(N2).Finally, the incidence of postoperative shoulder-tip pain after laparoscopic surgery undergoing general anesthesia (%)is calculated with the formula,N1/(N1+N2).(N1+N2)is equal to the total number of the patients entering our study.