Oral versus patient-controlled intravenous administration of oxycodone for pain relief after cesarean section.

PURPOSE: The optimal postoperative analgesia after cesarean section (CS) remains to be determined. The primary objective of this study was to assess whether oral oxycodone provides the same or better pain control and satisfaction with pain relief as oxycodone given intravenously using a patient-controlled analgesia (PCA) infusion device. The secondary objectives were to compare the gastrointestinal symptoms and postsurgical recovery of the two groups. METHODS: This prospective randomized trial was conducted at a University Hospital between February 2015 and June 2017. Altogether 270 CS patients were randomly assigned to receive postoperative oxycodone pain relief by IV PCA (n = 133) or orally (n = 137). Pain control and satisfaction with pain treatment were assessed by a numeric rating scale (NRS) at 2, 4, 8, and 24 h postoperatively. RESULTS: No differences were found in NRS pain scores or satisfaction between the groups except at 24 h pain when coughing; there was a statistically significant difference favoring the IV PCA group (p = 0.006). In the IV PCA group, the patients experienced more nausea at 4 h (p = 0.001) and more vomiting at 8 h (p = 0.010). Otherwise, postoperative recovery was similar in both groups. The equianalgesic dose of oxycodone was significantly smaller in the oral group (p = 0.003). CONCLUSIONS: This study indicates that oral oxycodone provides pain control and satisfaction with pain relief equal to IV oxycodone PCA for postoperative analgesia after cesarean section. Satisfaction with pain treatment was high in both groups, and both methods were well tolerated. Early nausea was less common with oral medication.

Characterization of persistent pain after hysterectomy based on gynaecological and sensory examination.

BACKGROUND AND AIMS: Previous studies have shown that pelvic pain is common after hysterectomy. It is stated that only a minor part of that pain can be defined as persistent postsurgical pain. Our primary aim was to find out if the pelvic pain after hysterectomy may be classified as postsurgical. Secondary aims were to characterize the nature of the pain and its consequences on the health related quality of life. METHODS: We contacted the 56 women, who had reported having persistent pelvic pain six months after hysterectomy in a previously sent questionnaire. Sixteen women participated. Clinical examinations included gynaecological examination and clinical sensory testing. Patients also filled in quality of life (SF-36) and pain questionnaires. RESULTS: Ten out of sixteen patients still had pain at the time of examination. In nine patients, pain was regarded as persistent postsurgical pain and assessed probable neuropathic for five patients. There were declines in all scales of the SF-36 compared with the Finnish female population cohort. CONCLUSIONS: In this study persistent pelvic pain after vaginal or laparoscopic hysterectomy could be defined as persistent postsurgical pain in most cases and it was neuropathic in five out of nine patients. Pain had consequences on the health related quality of life. IMPLICATIONS: Because persistent postsurgical pain seems to be the main cause of pelvic pain after hysterectomy, the decision of surgery has to be considered carefully. The management of posthysterectomy pain should be based on the nature of pain and the possibility of neuropathic pain should be taken into account at an early postoperative stage.

Persistent posthysterectomy pain: A prospective, observational study.

BACKGROUND: There is a large variation in the prevalence of persistent postsurgical pain depending on the type of surgery. It is unclear how common persistent postsurgical pain is after vaginal or laparoscopic hysterectomy. OBJECTIVES: The objective of this study was to define the prevalence of persistent postsurgical pain 6 months after laparoscopic or vaginal hysterectomy for benign causes and to ascertain the intensity of the pain and its possible predictors. DESING: A prospective, observational study. SETTING: Pirkanmaa Hospital District between October 2008 and September 2013. PATIENTS: Two hundred and forty-two women who underwent laparoscopic (150) or vaginal (92) hysterectomy for benign causes and who also participated in our earlier studies concerning acute pain. INTERVENTIONS: A pain questionnaire and a prestamped return envelope were mailed to all women 6 months after surgery. If the questionnaire had not been returned within 4 weeks, a reminder was sent. Data regarding preoperative pain and acute postoperative pain were collected from the records of our earlier studies concerning acute pain. The patient characteristics and surgical outcomes were collected from the patients' medical records. MAIN OUTCOME MEASURE: The prevalence of persistent postsurgical pain 6 months after hysterectomy. RESULTS: The response rate was 94% (227 respondents). Twenty-seven (18.9%) of 143 patients who had no pain preoperatively had persistent pain after surgery. Overall, 26.0% of patients had persistent pelvic pain 6 months after surgery. On an 11-point numeric rating scale (NRS), most of the patients rated their average pain as mild (NRS 0 to 3) and only 6.9% rated their worst pain as severe (NRS 7 to 10). Smoking, acute postoperative pain at 4 h after surgery and a laparoscopic approach were significantly associated with persistent pain in a multivariable analysis. CONCLUSION: Persistent posthysterectomy pain is common, but pain is mild and does not interfere with daily activities for most of the patients 6 months after surgery. Smoking is the strongest predictor for persistent pain. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT 01537731.

Less postoperative pain after laparoscopic hysterectomy than after vaginal hysterectomy.

PURPOSE: To find out whether the severity of acute postoperative pain differs between laparoscopic (LH) or laparoscopically assisted vaginal hysterectomy (LAVH) and vaginal hysterectomy. METHODS: In a prospective, powered, non-randomized trial, the consumption of oxycodone and pain scores were evaluated in 164 women up to 20 h after VH or LH/LAVH. All hysterectomies were performed under standardized general anesthesia and the pain medication was similar in both groups. The primary endpoint was the cumulative oxycodone consumed. Main secondary endpoints were pain scores (numeric rating scale NRS), operative time and hospital stay. RESULTS: The patients in LH/LAHV group consumed less opioid than the patients in the vaginal group during the 20 h period after surgery. The difference was significant at time point 4 and 6 h. The oxycodone consumed at time point 4 h was 19.9 (95 % CI 18.1-21.7) mg in laparoscopic group and 22.8 (20.7-25.0) mg in vaginal group (p = 0.040) and at time point 6 h was 23.5 (21.5-25.6) mg in laparoscopic group and 27.4 (24.7-30.0) mg in vaginal group (p = 0.026). Pain scores were lower after laparoscopic approach and the difference was significant at time point 60 min after surgery (p = 0.026). CONCLUSION: In this study, LH was associated with reduced need of analgesics and lower acute postoperative pain scores than VH.