The addition of 5 microg sufentanil or 0.2 mg morphine to hyperbaric bupivacaine for Caesarean section both provided safe and effective anaesthesia. Morphine increased the duration of postoperative analgesia compared with sufentanil without increasing maternal or neonatal side-effects.
The direct effects of dexmedetomidine on isolated gravid rat myometrium were investigated in this in vitro study; such effects may have clinical repercussions in the administration of anesthesia to obstetric patients. Samples of myometrium were taken from 12 gravid rats. Myometrial strips were dissected microscopically and mounted on the myograph at a resting tension of 1 g in bath that contained Krebs solution. After spontaneous contractions of the myometrium had been steadily established, increasing concentrations of dexmedetomidine were added to baths via micropipette, and the effects of these additions were recorded via myograph. Dexmedetomidine in vitro caused a significant increase in the amplitude, frequency, and area under the curve of myometrial contractions in a dose-dependent manner. Results of this study demonstrate that dexmedetomidine increases spontaneous contractions in rat myometrium; however, further investigation is needed to clarify the usefulness of dexmedetomidine in the administration of obstetric anesthesia.
The incidence of hypotension was higher in the levobupivacaine 10 mg group, even though this group presented more effective anesthesia and greater patient and surgeon satisfaction compared with the levobupivacaine 5 and 7.5 mg groups. As a result, we believe that levobupivacaine 7.5 mg combined with fentanyl 15 μg is suitable for combined spinal-epidural anesthesia in elective cesarean section.
Intrathecal opioids provide postoperative analgesia and hemodynamic stability by depressing the neuroendocrine response during the perioperative period. The effects of preoperative intrathecal morphine on perioperative hemodynamics, stress response, and postoperative analgesia were evaluated in patients undergoing abdominal hysterectomy with general anesthesia. A total of 24 patients were randomly assigned to the morphine group (n=12) or the control group (n=12). Patients in the morphine group were given intrathecal 5 microg/kg(-1) morphine before surgery. In all patients, general anesthesia was induced with 1 g/kg(-1) remifentanil, 2 mg/kg(-1) propofol, and 0.1 mg/kg(-1) vecuronium and was maintained with 1% to 2% sevoflurane-35% oxygen in N2O and remifentanil infusion. All patients received intravenous morphine patient-controlled analgesia after surgery. Postoperative pain was evaluated by means of a visual analogue scale. Blood samples were taken at 4 time points before and up to 4 hours after the start of surgery for assessment of plasma epinephrine, norepinephrine, and glucose. Mean arterial pressure (MAP), heart rate (HR), and adverse effects were recorded. Intraoperative hemodynamics was similar in both groups, but postoperative HR and MAP values at 4 h, 8 h, 12 h, and 20 h were significantly lower in the morphine group (P<.05). Postoperative VAS scores, total morphine consumption, and plasma epinephrine, norepinephrine, and glucose levels were significantly lower in the morphine group than in the control group (P<.05). Preoperative intrathecal morphine enhanced the quality of postoperative analgesia, decreased morphine consumption, and depressed the systemic stress response in patients undergoing total abdominal hysterectomy with general anesthesia.
Objective: The aim of this study was to compare the early surgical outcomes in patients who underwent total hysterectomy with laparoendoscopic single-site surgery (LESS-TH) versus robotic single-site total hysterectomy (RSS-TH). Methods: Twenty-four patients who underwent RSS-TH and thirty-four patients who underwent LESS-TH were retrospectively evaluated. Patient characteristics, operation time, intraoperative data (conversions, complications, estimated blood loss, etc.) and postoperative pain scores were compared. Results: The total operation time was significantly longer in the robotic surgery group, with a time of 98.5 vs. 86 min (p = 0.013), while vaginal closure time was significantly higher in the laparoscopic surgery group (p = 0.011). Intraoperative outcomes and postoperative pain scores were similar in the two groups. Conclusion: RSS-TH helps surgeons to overcome the technical disadvantages of LESS-TH, particularly vaginal cuff closure, ergonomics and instrument crowding and clashing. Early surgical outcomes are comparable in the two groups, and both techniques are safe and feasible.
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