Ultrasound-Guided Serratus Plane Block Versus Erector Spinae Block for Postoperative Analgesia After Video-Assisted Thoracoscopy: A Pilot Randomized Controlled Trial.

OBJECTIVE: There is no gold standard for the management of postoperative pain after video-assisted thoracoscopic surgery (VATS). Interfascial nerve blocks were proposed as simple and effective options. DESIGN: The present pilot randomized trial aimed to compare the perioperative analgesic effect of ultrasound-guided erector spinae plane block (ESB) with serratus plane block (SPB) in patients undergoing VATS. SETTING: University hospitals. PARTICIPANTS: Sixty adult patients scheduled to undergo VATS were enrolled in the study. INTERVENTIONS: Patients were randomly assigned in a 1:1 ratio to receive either single-shot ultrasound-guided ESB or SPB. MEASUREMENTS AND MAIN RESULTS: The primary outcomes were pain severity, time to first postoperative analgesia, and intraoperative and postoperative analgesic requirements. Data analysis was performed with MedCalc, Version 15.8 (MedCalc, Ostend, Belgium. The ESB group showed a significantly lower VASstatic score than the SPB group from the 4th hour (p = 0.04) to the 6th hour postoperatively (p = 0.002), and the VASdynamic score was significantly lower in ESB group than the SPB group because the patients were alert (p < 0.001); this trend was consistent until the 20th hour postoperatively. Similarly, the time for first required analgesic was significantly longer in the ESB group (p < 0.001). The mean arterial pressure was significantly higher in the SPB group than in the ESB group 12 hours postoperatively (p < 0.001). No major side effects were observed in either of the study groups. CONCLUSION: ESB provided superior analgesia and longer time to first required analgesic than did SPB.

Efficacy of intraperitoneal bupivacaine, hydrocortisone, and magnesium sulfate in different combinations for pain relief after laparoscopic ovarian cystectomy: a double-blind randomized controlled trial.

BACKGROUND: The aim of this study was to assess the efficacy of intraperitoneal different combinations for postoperative pain relief in patients undergoing laparoscopic unilateral ovarian cystectomy. METHODS: We conducted a double-blind randomized controlled trial that enrolled patients who were included to undergo laparoscopic unilateral ovarian cystectomy. Patients received one of the following combinations (30 patients each): group I: received bupivacaine plus magnesium sulfate, group II: received bupivacaine plus hydrocortisone, group III: received magnesium sulfate plus hydrocortisone, and group IV: received saline 0.9% only. The primary outcomes in the present study were the severity of postoperative abdominal and shoulder pain assessed by visual analog scale (VAS) every two hours till the end of the first day, and time for first postoperative analgesia requirement. RESULTS: Group I had statistically significant lower abdominal static and dynamic pain scores than the other groups till 18 hours postoperatively (P<0.001). In addition, group II had statistically significant lower abdominal static and dynamic pain scores than group III in the most of assessment points (P<0.05). The time for first required analgesics was significantly longer in group I (336.2±67.54 minutes) than other groups (P<0.001). The proportion of patients who required two or more doses of ketorolac was significantly lower in group I than other groups (P<0.001). The proportion of patients with nausea or vomiting was not significantly different across study's groups (P>0.05). CONCLUSIONS: Intraperitoneal bupivacaine-magnesium combination provides better analgesia and reduces postoperative morphine consumption than bupivacaine-hydrocortisone or magnesium-hydrocortisone combinations after laparoscopic ovarian cystectomy.

Effects of perineural administration of dexmedetomidine in combination with bupivacaine in a femoral-sciatic nerve block.

BACKGROUND AND AIM: Perineural administration of dexmedetomidine, a α2-adrenoceptor agonist, prolongs the duration of analgesia. We hypothesized that adding dexmedetomidine to bupivacaine would prolong postoperative analgesia after below knee surgery. MATERIALS AND METHODS: After ethical approval, 60 patients scheduled for below knee surgery under combined femoral-sciatic nerve block were randomly allocated into two groups to have their block performed using bupivacaine 0.5% alone (group B) or bupivacaine 0.5% combined with 100 µg bupivacaine-dexmedetomidine (group BD). Motor and sensory block onset times; durations of blockades and analgesia were recorded. RESULTS: Sensory and motor block onset times were shorter by 20% in group BD than in group B (P < 0.01). Sensory and motor blockade durations were longer in group BD (+45% and +40%, respectively) than in group B (P < 0.01). Duration of analgesia was longer in group BD by 75% than in group B (P < 0.01). Systolic, diastolic arterial blood pressure levels, and heart rate were significantly less in group BD, six patients in group BD, and no patients in group B developed bradycardia (P < 0.05). CONCLUSION: The addition of dexmedetomidine 100 µg to bupivacaine 0.5% during ultrasound-guided combined femoral and sciatic block for below knee surgery was associated with a prolonged duration of analgesia. However, this may be associated with significant bradycardia requiring treatment.