An assessment of the value of rectus sheath block for postlaparoscopic pain in gynecologic surgery

Investigation into the clinical performance of rectus sheath block in reducing postoperative pain following surgical intervention: A systematic review and meta-analysis of randomised controlled trials

Background and Aims

Rectus sheath block (RSB) is an effective postoperative pain control technique in abdominal surgical procedures. This systematic review evaluated the efficacy and outcome data of patients undergoing RSB compared to the standard of care in both laparoscopic and open surgical procedures.

Methods

This systematic review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines (PROSPERO ID: CRD42022372596). The search was restricted to randomised controlled trials (RCTs) comparing RSB effectiveness on postoperative pain to any standard general anaesthesia technique (control). We systematically explored PubMed, Medline, Central, Scopus and Web of Science for RCTs from inception to September 2023. The primary outcome was the evaluation of pain scores at rest 0-2, 10-12 and 12-24 h postoperatively. The secondary outcome was the analysis of postoperative intravenous (IV) morphine equivalent consumption at 24-h. A risk-of-bias tool for randomised trials (ROB 2.0, Cochrane, Copenhagen, Denmark) assessment and Grades of Recommendation, Assessment, Development and Evaluation (GRADE, Cochrane, Copenhagen, Denmark) analysis was conducted to evaluate the quality of the RCTs.

Results

Twenty RCTs involving 708 participants who received RSB intervention and 713 who received alternative analgesic care were included. RSB pain scores were significantly lower than control at 0-2 h (P < 0.001) and 10-12 h (P < 0.001) postoperatively. No significant effect was observed at 24 h (P = 0.11). RSB performance compared to control in 24-h IV morphine equivalency in milligrams was significantly lower (P < 0.001).

Conclusion

RSB implementation was associated with reduced postoperative pain scores and decreased opioid consumption in IV morphine equivalency up to 24 h following surgical intervention.

Bilateral transversus abdominis plane and rectus sheath blocks with liposomal bupivacaine for patients undergoing robotic prostatectomy

As robotic prostatectomy surgery becomes more prevalent, it is important to identify any regional techniques to optimize patient's recovery. We evaluated the effectiveness of bilateral transversus abdominis plane (TAP) and rectus sheath (RS) blocks with liposomal bupivacaine. We hypothesized that these blocks would reduce perioperative opioid use and pain scores. A retrospective cohort of patients from May 2018 and May 2021 at a single large VA hospital were studied. We compared those not receiving a nerve block against those receiving the TAP and RS as part of an Enhanced Recovery After Surgery (ERAS) pathway starting in May 2019. The primary outcome was post-operative opioid use. Secondary outcomes were post-operative pain scores and hospital length of stay. One hundred and thirty-four patients were included in the final analysis. Eighty-one patients did not receive a block and fifty-three patients did receive a block. No difference existed between the groups in regard to median oral morphine equivalents (mg) used in PACU or any post-operative day. No difference existed in median opioid usage (mg) or pain scores between the two groups on any post-operative day. There was no difference in temporal association of median pain scores or narcotic usage between the two groups. Bilateral TAP and RS with liposomal bupivacaine did not significantly decrease post-operative opioid use, improve pain scores, or decrease hospital length of stay for patients undergoing robotic prostatectomy. Further studies need to be done to evaluate the effect of these blocks with liposomal bupivacaine.

A study of the analgesic efficacy of rectus sheath block in single-port total laparoscopic hysterectomy: a randomized controlled study

Objective

To investigate the postoperative analgesic effects of rectus sheath block (RSB) in combination with patient-controlled analgesia (PCA) compared with PCA alone after single-port total laparoscopic hysterectomy (TLH)

Methods

This randomized, single-blind study enrolled female patients that underwent single-port TLH. The patients were randomized to receive either fentanyl PCA (PCA group) or RSB with the same PCA. The primary outcomes were fentanyl consumption at 8 h postoperatively and visual analogue scale (VAS) pain scores, which represented the severity of postoperative pain.

Results

A total of 36 patients were enrolled in the study: 18 in the PCA group and 18 in the RSB group (two patients were excluded). The primary outcome of fentanyl consumption was significantly lower at 8 h postoperatively in the RSB group than in the PCA group (148 ± 61 µg versus 222 ± 107 µg, respectively). VAS scores were significantly lower at arrival in the post-anaesthesia care unit and at 30 min after arrival in the RSB group compared with the PCA group. There were no significant differences in the nausea/vomiting score and in additional analgesic consumption between the two groups.

Conclusions

RSB can be used as a multimodal approach for pain control in single-port TLH procedures.

Clinical Research Information Service (no. KCT0001461).

Multimodal Analgesia in the Aesthetic Plastic Surgery: Concepts and Strategies

Postoperative pain management is crucial for aesthetic plastic surgery procedures. Poorly controlled postoperative pain results in negative physiologic effects and can affect length of stay and patient satisfaction. In light of the growing opioid epidemic, plastic surgeons must be keenly familiar with opioid-sparing multimodal analgesia regimens to optimize postoperative pain control.

Methods

A review study based on multimodal analgesia was conducted.

Results

We present an overview of pain management strategies pertaining to aesthetic plastic surgery and offer a multimodal analgesia model for outpatient aesthetic surgery practices.

Conclusion

This review article presents an evidence-based approach to multimodal pain management for aesthetic plastic surgery.

Minimal effective dose of ultrasound-guided rectus sheath block to reduce oral analgesic requirement after ambulatory laparoscopic tubal resection: a randomized controlled superiority trial

Background

The effective dose during ultrasound-guided rectus sheath block (URSB) for reducing pain after laparoscopic tubal ligation is reported to be 100 mg of 0.25% bupivacaine. We examined the minimal effective dose of 0.25% bupivacaine for URSB on oral analgesic requirement after ambulatory single-port laparoscopic tubal resection.

Methods

A prospective, randomized controlled, superiority trial was conducted among patients who had been scheduled for ambulatory laparoscopic tubal resection between September 2015 and January 2019 at a tertiary care hospital in southern Thailand. Anesthesia was induced following protocol. The intervention group was allocated to receive a bilateral URSB using 10 ml of 0.25% bupivacaine on either side after intubation (total 50 mg) while the control group did not receive the sham block. Patients and assessors were blinded to the study intervention. All patients received a multimodal analgesia regimen as follows: fentanyl and ketorolac intraoperatively and fentanyl and oral acetaminophen at the post-anesthetic care unit. Postoperative oral analgesic requirement (acetaminophen and/or ibuprofen) at home was the primary outcome. Postoperative time to first analgesic requirement, oral analgesia (acetaminophen/ibuprofen), and pain score at 6 and 24 h were accessed via telephone interviews. Percentage, effect size (ES), and 95% confidence interval (CI) were presented.

Results

A total of 66 out of 79 eligible patients were analyzed (32 intervention, 34 control). Intraoperative fentanyl consumption was significantly lower in the intervention group (ES [95% CI]: 0.58 [0.08, 1.07] mcg, p = 0.022). Time to first oral analgesia in the intervention group was significantly longer than that of the control group (ES [95% CI]: 0.66 [0.14, 1.16] h, p = 0.012). The proportion of oral analgesia requirement at 24 h after surgery in the control group was significantly higher than that in the intervention group (97% vs 75%, p = 0.012). Pain scores at 6 and 24 h were similar in both groups although slightly lower in the intervention group (ES [95% CI]: 0.22 [−0.26, 0.71], p = 0.368 and 0.33 [−0.16, 0.81], p = 0.184, respectively).

Conclusion

A dose of 0.25% bupivacaine 50 mg for URSB reduced the oral analgesic requirement at 24 h and prolonged the time to first analgesic requirement after ambulatory laparoscopic tubal resection.

Trial registration

Thaiclinicaltrials.orgTCTR20150921002. Registered on 18 September 2015

Rectus sheath block for acute pain management after robot-assisted laparoscopic prostatectomy

BACKGROUND

Robot-assisted laparoscopic prostatectomy (RALP) is a favored surgical approach for treating prostate cancer. However, RALP does not decrease postoperative pain significantly despite its minimal invasiveness. The pain associated with robot-assisted surgery is most severe during the immediate postoperative period. We aimed to demonstrate that preoperative rectus sheath block (RSB) can reduce acute pain after RALP.

METHODS

A prospective non-randomized study with two parallel groups was performed from June 2020 to August 2020. A total of 100 patients undergoing RALP were divided into two groups: the RSB group (n = 50) and the non-RSB group (n = 50). Ultrasound-guided RSB was performed preoperatively only in the RSB group. The primary outcome of the study was the visual analog scale (VAS) pain score during coughing (VAS-C) 1 h after surgery. In addition, the VAS pain score at rest (VAS-R) and the VAS-C were assessed up to 24 h after surgery. The doses of postoperative opioids consumed were also recorded.

RESULTS

The RSB group had a significantly lower VAS-C 1 h after RALP (58 [47-73] vs. 74 [63-83] mm, p = 0.001). In addition, the RSB group had significantly lower VAS-R and VAS-C scores, and postoperative opioid requirement, up to 6 h after surgery compared to the non-RSB group. Moreover, the VAS-R was significantly lower in the RSB group than in the non-RSB group 24 h after surgery.

CONCLUSION

Preoperative RSB significantly improved analgesia during the early period after RALP. The long-term analgesic efficacy of RSB needs further study.

Fascial plane blocks: a narrative review of the literature

Fascial plane blocks (FPBs) are increasingly numerous and are often touted as effective solutions to many perioperative challenges facing anesthesiologists. As 'new' FPBs are being described, questions regarding their effectiveness remain unanswered as appropriate studies are lacking and publications are often limited to case discussions or technical reports. It is often unclear if newly named FPBs truly represent a novel intervention with new indications, or if these new publications describe mere ultrasound facilitated modifications of existing techniques. Here, we present broad concepts and potential mechanisms of FPB. In addition, we discuss major FPBs of (1) the extremities (2) the posterior torso and (3) the anterior torso. The characteristics, indications and a brief summary of the literature on these blocks is included. Finally, we provide an estimate of the overall level of evidence currently supporting individual approaches as FPBs continue to rapidly evolve.

Efficacy and Safety Profile of Rectus Sheath Block in Adult Laparoscopic Surgery: A Meta-analysis

BACKGROUND

Rectus sheath block (RSB) has been increasingly used for pain management after laparoscopic procedures but with a conflicting data on its analgesic efficacy. We conducted a systematic review and meta-analysis to evaluate the efficacy and safety of RSB in adults undergoing laparoscopic surgery.

METHODS

A systematic literature search of the PubMed, Embase, CINAHL, and Cochrane Library databases was conducted from inception through October 1, 2020, to identify trials comparing RSB with a control group in laparoscopic surgery. The primary outcome was rest pain scores at 0-2 h postoperatively. Secondary outcomes included pain scores at rest at 10-12 and 24 h postoperatively, pain scores on movement at 0-2, 10-12, and 24 h postoperatively, 24- and 48-h opioid consumption, opioid-related side effects, and RSB-associated adverse events.

RESULTS

Nine trials with 698 patients were included. RSB was associated with significantly lower rest pain scores at 0-2 h postoperatively (standardized mean difference -1.83, 95% confidence interval [-2.70, -0.96], P < 0.001, I2 = 95%) than control. Furthermore, RSB significantly reduced pain scores at rest at 10-12 h postoperatively and on movement at 0-2 h postoperatively, 24-h opioid consumption, and opioid-related side effects. Other secondary outcomes were similar between groups. Preoperative RSB provided better pain control compared with postoperative block administration. None of the studies reported local or systemic complications related to RSB.

CONCLUSIONS

In the setting of laparoscopic surgery, RSB improves pain control for up to 12 h postoperatively and reduces opioid consumption, without major reported adverse events.

The impact of ultrasound-guided bilateral rectus sheath block in patients undergoing cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy - a retrospective study

Background

Rectus sheath block (RSB) is known to attenuate postoperative pain and reduce perioperative opioid consumption. Thus, a retrospective study was performed to examine the effects of bilateral rectus sheath block (BRSB) in cytoreductive surgery (CRS) combined with hyperthermic intraperitoneal chemotherapy (HIPEC).

Methods

A total of 178 patients undergoing CRS/HIPEC at our hospital were included. Patient information and anaesthesia-related indicators were collected from the electronic medical record (EMR) system. All subjects were divided into the following two groups: the G group (general anaesthesia) and the GR group (RSB combined with general anaesthesia). Patients in the GR group received 0.375% ropivacaine for BRSB before surgery. The primary outcomes included the total amount of remifentanil and rocuronium, the total consumption of dezocine after surgery, the visual analogue scale (VAS) score and the patient-controlled intravenous analgesia (PCIA) input dose at 1 h (T6), 6 h (T7), 12 h (T8), 24 h (T9) and 48 h (T10) after surgery. Other outcomes were also recorded, such as patient demographic data, the intraoperative heart rate (HR) and mean arterial pressure (MAP), and postoperative complications.

Results

Compared with the G group, the GR group showed a shorter time to tracheal extubation (P < 0.05), a decreased total amount of remifentanil and rocuronium (P < 0.05), and a reduced VAS score, PCIA input dose and number of PCIA boluses at 1 h, 6 h and 12 h after surgery (P < 0.05). However, at 24 h and 48 h after surgery, there were no differences in the VAS score of pain at rest or during motion between the two groups (P > 0.05). Moreover, the incidence of hypertension, emergence agitation, delayed recovery, hypercapnia, and nausea and vomiting was lower in the GR group than in the G group (P < 0.05). There were no differences in the changes in MAP and HR during the surgery between the two groups (P > 0.05). No complications associated with nerve block occurred.

Conclusion

BRSB could provide short-term postoperative analgesia, reduce perioperative opioid consumption and reduce the incidence of postoperative complications. It is an effective and safe procedure in CRS/HIPEC.

Abdominal Surgery With Bilateral Rectus Sheath Block: A Case Report

A 44-year-old man, American Society of Anesthesiologists physical status class IV, presented for fulguration of anal condyloma and diverting colostomy. The patient's medical history includes World Health Organization (WHO) class I pulmonary hypertension (PH), right heart failure, and bilateral lower extremity paralysis due to Pott's disease. The patient was not a candidate for neuraxial anesthesia due to sacral decubitus ulcers, and alternative options to general anesthesia (GA) were considered to avoid the high risk of right ventricular (RV) failure and ensuing complications. The case was successfully performed under sedation with dexmedetomidine infusion and bilateral rectus sheath blocks for surgical anesthesia.

Preoperative versus Postoperative Rectus Sheath Block for Acute Postoperative Pain Relief after Laparoscopic Cholecystectomy: A Randomized Controlled Study

Background: Pain after laparoscopic cholecystectomy (LC) is multifactorial and usually not effectively treated. Rectus sheath block (RSB) has been proven to reduce the pain from midline abdominal incision and laparoscopic surgery. We investigated the preemptive analgesic effect of RSB after LC. Methods: In this prospective, randomized, single-center trial, 200 patients undergoing LC were randomized into preoperative RSB (pre-RSB) or postoperative RSB (post-RSB) group. An ultrasound-guided RSB was performed before skin incision in the pre-RSB group or after skin closure in the post-RSB group. The primary outcome was total rescue analgesic consumption at 24 h post-surgery. The secondary outcomes were cumulated rescue analgesic consumption and postoperative pain measured by numerical rating scale (NRS) at 0, 1, 2, 6, 9, 18, and 24 h post-surgery. Results: Total rescue analgesic consumption at 24 h post-surgery was significantly lower in the pre-RSB group than in the post-RSB group (p = 0.020). The cumulated rescue analgesic consumption was significantly lower in the pre-RSB group than in the post-RSB group at 1 h (p = 0.023), 9 h (p = 0.020) and 18 h (p = 0.002) post-surgery. NRS was significantly lower in the pre-RSB group than in the post-RSB group at 0 h post-surgery (p = 0.023). Conclusion: The pre-RSB reduced the analgesic requirements in patients undergoing LC compared with the post-RSB.

Rectus sheath single-injection blocks: a study to quantify local anaesthetic absorption using serial ultrasound measurements and lidocaine serum concentrations

Objectives

Rectus sheath blocks are an established option for analgesia following abdominal surgery, but pharmacokinetic data are limited. This study sought to characterise the absorption of lidocaine injectate and the pharmacokinetics of lidocaine after rectus sheath injection.

Methods

Bilateral rectus sheath single-injection blocks were given to 10 patients undergoing general or urological surgery. Afterwards, serial lidocaine serum levels and ultrasound measurements of the rectus sheath injectate reservoir were collected.

Key findings

Injectate within the rectus sheath was visible with ultrasound up to 12 h after injection. However, the rate of drug absorption exceeded that of injectate disappearance. Peak serum concentration occurred within 30 min with average peak concentrations of 1.65 μg/ml. Lidocaine clearance was lower than reported in young healthy subjects. The body mass index positively correlated with lidocaine terminal phase half-life, and clearance negatively correlated with age.

Conclusions

The study provides the first data describing lidocaine pharmacokinetics after rectus sheath injection. Peak serum concentrations transiently achieved systemic levels associated with pain relief after a single bolus injection. The data from this study could be used to develop a regime using single shot rectus sheath blockade with a bolus of lidocaine followed by infusion using bilateral rectus sheath catheters.

Surgically-assisted abdominal wall blocks for analgesia after abdominoplasty: A prospective randomized trial

BACKGROUND

Abdominoplasty is a common aesthetic procedure. The transversus abdominis plane block (TAPB) and rectus sheath block (RSB) have proven efficacy as analgesic modality for abdominal surgeries. This study demonstrates post-abdominoplasty analgesic duration consequent to the three surgically infiltrated local anesthetic techniques: bilateral TAPB, bilateral RSB, and subcutaneous infiltration (SCI) of 0.25% bupivacaine.

METHODS

In this prospective randomized study, 48 adult patients scheduled for abdominoplasty were randomized into three groups: TAPB group (n = 16), RSB group (n = 16), and SCI group (n = 16) utilizing 40 mL of 0.25% bupivacaine for each block. In both TAPB and RSB groups, the block was performed bilaterally after plication of anterior abdominal wall, while in SCI group, the surgical incisional area was infiltrated before skin closure. Main outcome measures included visual analogue scale (VAS), at rest and during movement; the analgesic duration; and the total required doses of morphine in the first postoperative day.

RESULTS

A statistically significant longer analgesia was recorded in the TABP group compared with both the RSB and SCI groups. Statistically significant higher VAS scores in the SCI group 4 hours postoperatively was recorded, both at rest and during movement, compared with both TABP and RSB groups. Significant higher morphine consumption in the SCI group was compared with the other two groups.

CONCLUSIONS

Among the surgically infiltrated anesthetic techniques for abdominoplasty, bilateral TAPB was associated with longer postoperatively analgesic duration with lower morphine consumption in the first 24 hours compared with RSB and SCI.

Effect of adding midazolam to bupivacaine during rectus sheath block: a randomised controlled trial

BACKGROUND

Various adjuvants have been tried to improve quality and increase duration of local anaesthetics during various nerve blocks. We aimed to evaluate the effect of adding midazolam to bupivacaine on rectus sheath (RS) block in patients undergoing umbilical or epigastric hernia repair.

METHODS

In all, 60 adult patients were divided into two equal groups, each group included 30 patients. Group I received 20 ml of bupivacaine hydrochloride 0.25% + midazolam 50 μg/kg in 2 ml saline 0.9% (Midazolam group, n = 30), whereas Group II received 20 ml of bupivacaine hydrochloride 0.25% + 2 ml saline (Control group, n = 30) for RS block on each side. The primary outcome was post-operative 48 h morphine consumption, whereas secondary outcomes included analgesia duration, post-operative pain, as evaluated by visual analogue scale (VAS) for pain scoring at 1, 2, 6, 12, 24 and 48 h post-operatively, reported post-operative nausea and or vomiting (PONV), somnolence or any adverse drug reactions.

RESULTS

The current study showed that addition of midazolam to bupivacaine for RS blockade provided good analgesia as evidenced by a statistically significant less morphine consumption in the post-operative 48 h [11.2 (5.3-18.3) vs. 25.9 (15.2-31.0) mg, P = 0.002], longer duration of analgesia, lower VAS during post-operative 48 h, lower incidence of PONV, somnolence and pruritus.

CONCLUSION

Midazolam addition to bupivacaine for RS blockade provided adjuvant analgesia as supported by less morphine consumption, longer duration of analgesia, and lower VAS score.

The Effect of Rectus Sheath Block as a Supplement of General Anesthesia on Postoperative Analgesia in Adult Patient Undergoing Umbilical Hernia Repair

BACKGROUND

Ultrasound guided rectus sheath block can block the ventral rami of the 7th to 12th thoracolumbar nerves by injection of local anesthetic into the space between the rectus muscle and posterior rectus sheath. The aim of this randomized double-blind study was to evaluate the analgesic effect of the bilateral ultrasound guided rectus sheath block as supplement of general anesthesia on patents undergoing elective umbilical hernia repair.

METHODS

After the hospital ethics committee approval, 60 (ASA I-II) adult patients scheduled for umbilical hernia repair were included in this study. The group I (n=30) patents received only general anesthesia. In the group II (n = 30) patents after induction of general anesthesia received a bilateral ultrasound guided rectus sheath block with 40 ml of 0.25% bupivacaine. In this study we assessed demographic and clinical characteristics, pain score - VAS at rest at 2, 4, 6, 12 and 24 hours after operation and total analgesic consumption of morphine dose over 24-hours.

RESULTS

There were statistically significant differences in VAS scores between the groups I and II at all postoperative time points - 2hr, 4 hr, 6 hr, 12 hr and 24 hr. (P < 0.00001). The cumulative 24 hours morphine consumption after the operation was significantly lower in the group II (mean = 3.73 ± 1. 41) than the group I (mean = 8.76 ± 2.41). This difference was statistically significant (p = 0.00076).

CONCLUSION

The ultrasound guided rectus sheath block used for umbilical hernia repair could reduce postoperative pain scores and the amount of morphine consumption in 24 hours postoperative period.

Pain related to robotic cholecystectomy with lower abdominal ports: effect of the bilateral ultrasound-guided split injection technique of rectus sheath block in female patients: A prospective randomised trial

BACKGROUND

Robotic cholecystectomy (RC) using port sites in the lower abdominal area (T12-L1) rather than the upper abdomen has recently been introduced as an alternative procedure for laparoscopic cholecystectomy. Therefore, we investigated the time course of different components of pain and the analgesic effect of the bilateral ultrasound-guided split injection technique for rectus sheath block (sRSB) after RC in female patients.

METHODS

We randomly assigned 40 patients to undergo ultrasound-guided sRSB (RSB group, n = 20) or to not undergo any block (control group, n = 20). Pain was subdivided into 3 components: superficial wound pain, deep abdominal pain, and referred shoulder pain, which were evaluated with a numeric rating scale (from 0 to 10) at baseline (time of awakening) and at 1, 6, 9, and 24 hours postoperatively. Consumption of fentanyl and general satisfaction were also evaluated 1 hour (before discharge from the postanesthesia care unit) and 24 hours postoperatively (end of study).

RESULTS

Superficial wound pain was predominant only at awakening, and after postoperative 1 hour in the control group. Bilateral ultrasound-guided sRSB significantly decreased superficial pain after RC (P < 0.01) and resulted in a better satisfaction score (P < 0.05) 1 hour after RC in the RSB group compared with the control group. The cumulative postoperative consumption of fentanyl at 6, 9, and 24 hours was not significantly different between groups.

CONCLUSIONS

After RC with lower abdominal ports, superficial wound pain predominates over deep intra-abdominal pain and shoulder pain only at the time of awakening. Afterwards, superficial and deep pain decreased to insignificant levels in 6 hours. Bilateral ultrasound-guided sRSB was effective only during the first hour. This limited benefit should be balanced against the time and risks entailed in performing RSB.

Comparison of 0.25% Ropivacaine for Intraperitoneal Instillation v/s Rectus Sheath Block for Postoperative Pain Relief Following Laparoscopic Cholecystectomy: A Prospective Study

INTRODUCTION

As Laparoscopic Cholecystectomy (LC) is not a totally pain free procedure, with the pain being most intense on the day of surgery and on the following day. Various techniques are available for postoperative pain relief like intraperitoneal instillation of local anaesthetics and rectus sheath block (RSB)which may provide effective pain relief.

AIM

To compare the efficacy of preemptive administration (initiated before the surgical procedure) of intraperitoneal instillation and rectus sheath block using ropivacaine for postoperative analgesia after laparoscopic cholecystectomy.

MATERIALS AND METHODS

A total of 75 selected patients were randomly assigned to three equal groups as Group R, who received bilateral RSB with 0.25 % ropivacaine 15 ml on either side; Group I, who received intraperitoneal instillation of 0.25% ropivacaine 50 ml and Group C (Control group), who received only rescue analgesic on pain. These were compared regarding postoperative analgesia in terms of Visual Analog Scale (0-10 cm), Prince Henry Hospital Pain Score (0-3), time to first dose of rescue analgesic (tramadol), total rescue analgesic consumption in 48 hours, patient satisfaction scores (1-7) and adverse effects.

RESULTS

The time to first rescue analgesic was significantly longer in Group R (16.16±4.73h) and Group I (7.84±1.34h) as compared to Group C (1.72±0.67h), p<0.001. Mean tramadol consumption in 48h for each patient was significantly less in Group R (148±54.92mg) and Group I (202±33.78mg) as compared to Group C (298±22.73mg) p<0.001. Postoperative pain scores were also significantly less in Group R and Group I as compared to Group C during first 6 hours, p<0.05. The difference in above parameters was also significant between Group R and Group I, p<0.05. Thus order of postoperative analgesia effect was: Group R > Group I > Group C. Rescue analgesic requirement showed a 32.21% reduction in Group I and 50.33% reduction in Group R as compared to Group C. Patient Satisfaction Scores (PSS) showed a significant difference among groups with acceptable PSS scores as: Group R (92%) v/s Group I (40%) v/s Group C (20%) p<0.001.

CONCLUSION

Pre-emptive administration of rectus sheath block or intraperitoneal instillation of 0.25% ropivacaine was found effective in providing better postoperative analgesia as compared to control group after laparoscopic cholecystectomy. Among these two techniques, rectus sheath block was found to be superior over intraperitoneal instillation.

Rectus sheath block for postoperative analgesia in patients with mesenteric vascular occlusion undergoing laparotomy: A randomized single-blinded study

Background:

Acute mesenteric ischemia is a life-threatening vascular emergency that requires early diagnosis, immediate anticoagulation, and intervention to restore mesenteric blood flow adequately.

Aims:

To investigate the effect of rectus sheath block (RSB) for postoperative analgesia in patients with mesenteric vascular occlusion.

Settings and Design:

Forty patients with mesenteric vascular occlusion, American Society of Anesthesiologists physical status I or II or III, scheduled for laparotomy were enrolled in this study.

Subjects and Methods:

Patients were randomized into two groups; control group (C Group) and rectus block group (RB Group). In both groups, general anesthesia was induced fentanyl 1 μg/kg with sleeping dose of propofol and 0.15 mg/kg cisatracurium. Then, anesthesia was maintained with sevoflurane in oxygen 100%. In RB Group, under aseptic condition, RSB guided by ultrasound was performed. Surgery is then continued and intravenous fentanyl patient-controlled analgesia pump started. Postoperative pain, sedation, and opioid side effects were assessed.

Statistical Analysis Used:

Statistical analysis was done using Statistical Package for Social Sciences (SPSS 19.0, Chicago, IL, USA).

Results:

Patients in the RB Group consumed statistically significant less opioid in comparison to control group either intraoperatively or postoperatively. Mean pain scores were statistically significant less in RB Group than in the control group at 2, 4, and 6 h postoperatively. Sedation score, incidence of nausea and vomiting were statistically significant less in the RB Group in comparison to control group. More patients’ satisfaction was reported in the RB Group.

Conclusions:

Ultrasound-guided RSB resulted in postoperative reduction of pain scores and opioid consumption compared with general anesthesia alone. Moreover, RSB was associated with better patient satisfaction and less nausea and vomiting.

Rectus sheath catheters provide equivalent analgesia to epidurals following laparotomy for colorectal surgery

Introduction Rectus sheath catheters (RSCs) are increasingly being used to provide postoperative analgesia following laparotomy for colorectal surgery. Little is known about their efficacy in comparison with epidural infusion analgesia (EIA). They are potentially better as they avoid the recognised complications associated with EIA. This study compares these two methods of analgesia. Outcomes include average pain scores, time to mobilisation and length of stay. Methods This was a 33-month single centre observational study including all patients undergoing elective open or laparoscopic-converted-to-open colorectal resection for both benign and malignant disease. Patients received either EIA or RSCs. Data were collected prospectively and analysed retrospectively. Results A total of 95 patients were identified. Indications for surgery, operation and complications were recorded. The mean time to mobilisation was significantly shorter in patients who had RSCs compared with EIA patients (2.4 vs 3.5 days, p<0.05). There was no difference in postoperative pain scores or length of stay. Conclusions RSCs provide equivalent analgesia to EIA and avoid the recognised potential complications of EIA. They are associated with a shorter time to mobilisation. Their use should be adopted more widely.

Preoperative versus postoperative ultrasound-guided rectus sheath block for improving pain, sleep quality and cytokine levels of patients with open midline incisions undergoing transabdominal gynaecological operation: study protocol for a randomised controlled trial

Background

Rectus sheath block (RSB) is used for postoperative pain relief in patients undergoing abdominal surgery with midline incision. Preoperative RSB has been shown to be effective, but it has not been compared with postoperative RSB. The aim of the present study is to evaluate postoperative pain, sleep quality and changes in the cytokine levels of patients undergoing gynaecological surgery with RSB performed preoperatively versus postoperatively.

Methods/Design

This study is a prospective, randomised, controlled (randomised, parallel group, concealed allocation), single-blinded trial. All patients undergoing transabdominal gynaecological surgery will be randomised 1:1 to the treatment intervention with general anaesthesia as an adjunct to preoperative or postoperative RSB. The objective of the trial is to evaluate postoperative pain, sleep quality and changes in the cytokine levels of patients undergoing gynaecological surgery with RSB performed preoperatively (n = 32) versus postoperatively (n = 32). All of the patients, irrespective of group allocation, will receive patient-controlled intravenous analgesia (PCIA) with oxycodone.

The primary objective is to compare the interval between leaving the post-anaesthesia care unit and receiving the first PCIA bolus injection on the first postoperative night between patients who receive preoperative versus postoperative RSB. The secondary objectives will be to compare (1) cumulative oxycodone consumption at 24 hours after surgery; (2) postoperative sleep quality, as measured using a BIS-Vista monitor during the first night after surgery; and (3) cytokine levels (interleukin-1, interleukin-6, tumour necrosis factor-α and interferon-γ) during surgery and at 24 and 48 hours postoperatively.

Discussion

Clinical experience has suggested that RSB is a very effective postoperative analgesic technique, and we will answer the following questions with this trial. Do preoperative block and postoperative block have the same duration of analgesic effects? Can postoperative block extend the analgesic time? The results of this study could have actual clinical applications that could help to reduce postoperative pain and shorten hospital stays.

Trial registration

Current Controlled Trials NCT02477098 15 June 2015.

Spread patterns and effectiveness for surgery after ultrasound-guided rectus sheath block in adult day-case patients scheduled for umbilical hernia repair

BACKGROUND AND AIMS

We conducted a prospective study to examine the local anesthetic (LA) spread and the effectiveness for surgical anesthesia of ultrasound (US)-guided rectus sheath block (RSB) in adult patients undergoing umbilical hernia repair.

MATERIAL AND METHODS

Thirty patients received at T-10 level a bilateral US-guided injection of 20 mL levobupivacaine 0.375% + epinephrine 5 μg/mL behind the rectus muscle to detach it from its sheath. Anesthetic spread into the rectus sheath was evaluated ultrasonographically at T-9 and T-11 levels and scored from 0 to 4. The RSB was defined effective for surgical anesthesia if it was able to guarantee an anesthetic level sufficient for surgery without any mepivacaine supplementation.

RESULTS

Overall, the block was effective for surgical anesthesia in 53.3% of patients (95% confidence interval, ±17.8). In the remaining patients, anesthesia supplementation was needed at cutaneous incision, whereas manipulation of the muscle and fascial planes was painless. No patients required general anesthesia. LA spreads as advocated (to T-9 and to T-11 bilaterally = spread score 4) in 8/30 patients (26.6%); in these cases, the block was 75% effective for surgery. The anesthetic spread was most negatively influenced by increased body mass index. Postoperative analgesia was excellent in 97% of patients.

CONCLUSION

Use of RSB as an anesthetic management of umbilical herniorrhaphy is recommended only with anesthetic supplementation at the incision site.

Ultrasound-Guided Rectus Sheath Block in Gynaecological Surgery with Pfannenstiel Incision

OBJECTIVE

This study aimed to evaluate the effects of ultrasound-guided rectus sheath block in gynaecological surgery with Pfannenstiel incision.

METHODS

After the approval of the ethics committee and the patients' consent, 75 ASA I-II patients who were aged between 20 and 70 years and scheduled for a gynaecological surgery with Pfannenstiel incision were included in this study. After induction of general anaesthesia, patients were randomly divided into three groups. In Group UR patients (n=25), ultrasound-guided rectus sheath block with 0.25% levobupivacaine (0.2 mL kg(-1)) was performed. In Group SR patients (n=25), surgical rectus sheath block with 0.25% levobupivacaine (0.2 mL kg(-1)) was applied. In Group T (n=25) patients, tramadol (2 mg kg(-1)) was intravenously administered 30 min before the end of surgery. Patient-controlled analgesia device was established for postoperative pain relief in all groups. Haemodynamic data and inspired sevoflurane concentration were recorded during the operation. Pain scores, total tramadol consumption, supplemental analgesic requirement and side effects were postoperatively evaluated.

RESULTS

Demographic characteristics, duration of surgery and haemodynamic parameters were similar between the groups. Inspired sevoflurane concentration (%) and VAS scores were significantly lower in Group UR than those in Groups SR and T. Total tramadol consumption was significantly lower in Groups UR and SR than that in Group T. There was no significant difference in the incidence of side effects.

CONCLUSION

This study demonstrates that ultrasound-guided rectus sheath block helps to provide the effective analgesia without any side effects compared with surgical rectus sheath block and intravenous tramadol for gynaecological surgery with Pfannenstiel incision.

Bilateral rectus sheath blocks as the single anaesthetic technique for an open infraumbilical hernia repair

We present a case of an open surgical repair of an infraumbilical hernia, which was performed on a 45-year-old man categorised as American Society of Anesthesiologists class 4; he weighed 107 kg, and had a body mass index of 34.2 kg/m2 and nonischaemic cardiomyopathy (left ventricular ejection fraction of 20%). Due to the patient's significant perioperative risks, the surgery was performed with the patient under ultrasonography-guided bilateral rectus sheath blocks; 15 mL of 1% lignocaine and 10 mL of 0.5% bupivacaine were deposited in the space between the rectus abdominis and posterior rectus sheath. The patient tolerated the surgery with minimal further sedation and additional analgesia. Rectus sheath block is a useful regional technique for periumbilical surgery, allowing surgery in highrisk patients while avoiding general anaesthesia and central neuraxial blockade. The use of real-time ultrasonographic guidance may reduce risks of peritoneal puncture, bleeding and visceral injury, while potentially increasing the rate of success.

Randomized clinical trial of subcutaneous versus interfascial bupivacaine for pain control after midline laparotomy

Background

Although patient-controlled analgesia for pain management after abdominal surgery is common, efforts to find alternative effective methods to control postoperative pain are continuing. The aim of this study was to compare postoperative pain levels following intermittent regional administration of bupivacaine via a catheter placed in the rectus sheath or subcutaneously at abdominal surgery through midline incisions.

Methods

Consecutive patients undergoing elective midline laparotomy were assigned randomly to a group with two catheters placed over the fascia (suprafascial group) before surgical wound closure or to a group with catheters placed between the two sheaths of each rectus muscle (interfascial group). Pain levels were determined every 12 h, both at rest and with movement, by means of a standard visual analogue scale (VAS) for 72 h after surgery. The amounts of administered opioid were recorded.

Results

Sixty patients were enrolled in the study (30 patients in each group). The median VAS score 36 h after surgery, both at rest and with movement, was significantly lower in the interfascial group than in the suprafascial group (P &lt; 0·050). Repeated-measures ANOVA also showed a significant difference in the postoperative VAS scores (P &lt; 0·007). The amount of self-administered morphine was significantly lower in the interfascial group, overall (P = 0·001) as well as on postoperative day 1 (P = 0·001) and day 2 (P = 0·016). Bowel sounds returned more quickly in the interfascial group (P = 0·040).

Conclusion

Locoregional catheter administration of bupivacaine following midline laparotomy is more effective when the catheter is placed in the rectus sheath compared with suprafascial delivery. Registration number: IRCT138810142982N1 (http://www.irct.ir).

Systematic review and metaanalysis of intraperitoneal instillation of local anesthetics for reduction of pain after gynecologic laparoscopy

We reviewed the effectiveness of intraperitoneal instillation of local anesthetic on pain after gynecologic laparoscopic surgery. Sources included the Cochrane Central Register of Controlled Trials, MEDLINE/PubMed, EMBASE, and Ovid MEDLINE In-Process & Other Non-Indexed Citations databases, and abstracts, reference lists, and randomized controlled trial (RCT) registries. The 7 included RCTs compared pain scores after administration of intraperitoneal analgesics or placebo/control during gynecologic laparoscopic surgery with benign indications. Outcome measures were pain scores (per visual analog scale) at 1 to 2, 4 to 6, and 24 hours postoperatively. Pain scores were significantly lower in the groups receiving local anesthesia at 1 to 2 hours (weighted mean difference [WMD], -1.82; 95% confidence interval [CI], -2.55 to -1.08]) and 4 to 6 hours postoperatively (WMD, -2.00; 95% CI, -3.64 to -0.35), but were similar at 24 hours (WMD, -1.43; 95% CI, -1.15 to 0.96). Local analgesia instilled intraperitoneally significantly decreased pain during a 6-hour interval after gynecologic laparoscopy.

The surgical rectus sheath block for post-operative analgesia: a modern approach to an established technique

OBJECTIVE

To describe the surgical rectus sheath block for post-operative pain relief following major gynaecological surgery.

TECHNIQUE

Local anaesthetic (20 ml 0.25% bupivacaine bilaterally) is administered under direct vision to the rectus sheath space at the time of closure of the anterior abdominal wall.

STUDY DESIGN

We conducted a retrospective case note review of 98 consecutive patients undergoing major gynaecological surgery for benign or malignant disease who received either standard subcutaneous infiltration of the wound with local anaesthetic (LA, n=51) or the surgical rectus sheath block (n=47) for post-operative pain relief.

MAIN OUTCOME MEASURES

(1) Pain scores on waking, (2) duration of morphine-based patient controlled analgesia (PCA), (3) quantity of morphine used during the first 48 post-operative hours and (4) length of post-operative stay.

RESULTS

The groups were similar in age, the range of procedures performed and the type of pathology observed. Patients who received the surgical rectus sheath block had lower pain scores on waking [0 (0-1) vs. 2 (1-3), p<0.001], required less morphine post-operatively [12 mg (9-26) vs. 36 mg (30-48), p<0.001], had their PCAs discontinued earlier [24h (18-34) vs. 37 h (28-48), p<0.001] and went home earlier [4 days (3-4) vs. 5 days post-op (4-8), p<0.001] [median (interquartile range)] than patients receiving standard subcutaneous local anaesthetic into the wound.

CONCLUSIONS

The surgical rectus sheath block appears to provide effective post-operative analgesia for patients undergoing major gynaecological surgery. A randomised controlled clinical trial is required to assess its efficacy further.

Perioperative transversus abdominis plane (TAP) blocks for analgesia after abdominal surgery

BACKGROUND

The transversus abdominis plane (TAP) block is a peripheral nerve block which anaesthetises the abdominal wall. The increasing use of TAP block, as a form of pain relief after abdominal surgery warrants evaluation of its effectiveness as an adjunctive technique to routine care and, when compared with other analgesic techniques.

OBJECTIVES

To assess effects of TAP blocks (and variants) on postoperative analgesia requirements after abdominal surgery.

SEARCH STRATEGY

We searched specialised registers of Cochrane Anaesthesia and Cochrane Pain, Palliative and Supportive Care Review Groups, CENTRAL, MEDLINE, EMBASE and CINAHL to June 2010.

SELECTION CRITERIA

We included randomised controlled trials (RCTs) comparing TAP block or rectus sheath block with: no TAP or rectus sheath block; placebo; systemic, epidural or any other analgesia.

DATA COLLECTION AND ANALYSIS

At least two review authors assessed study eligibility and risk of bias, and extracted data.

MAIN RESULTS

We included eight studies (358 participants), five assessing TAP blocks, three assessing rectus sheath blocks; with moderate risk of bias overall. All studies had a background of general anaesthesia in both arms in most cases.Compared with no TAP block or saline placebo, TAP block resulted in significantly less postoperative requirement for morphine at 24 hours (mean difference (MD) -21.95 mg, 95% confidence interval (CI) -37.91 to 5.96; five studies, 236 participants) and 48 hours (MD -28.50, 95% CI -38.92 to -18.08; one study of 50 participants) but not at two hours (all random-effects analyses). Pain at rest was significantly reduced in two studies, but not a third.Only one of three included studies of rectus sheath blocks found a reduction in postoperative analgesic requirements in participants receiving blocks. One study, assessing number of participants who were pain-free after their surgery, found more participants who received a rectus sheath block to be pain-free for up to 10 hours postoperatively. As with TAP blocks, rectus sheath blocks made no apparent impact on nausea and vomiting or sedation scores.

AUTHORS' CONCLUSIONS

No studies have compared TAP block with other analgesics such as epidural analgesia or local anaesthetic infiltration into the abdominal wound. There is only limited evidence to suggest use of perioperative TAP block reduces opioid consumption and pain scores after abdominal surgery when compared with no intervention or placebo. There is no apparent reduction in postoperative nausea and vomiting or sedation from the small numbers of studies to date. Many relevant studies are currently underway or awaiting publication.

[Paraumbilical block for strangulated umbilical hernia in emergency]

The authors describe a strangulated umbilical hernia surgery performed in emergency with a paraumbilical block associated with a local infiltration. For this patient, 3-4 ASA status, in occlusion, with iterative vomiting and coagulation disorders, general or spinal anaesthesia were high-risk technics. Paraumbilical block, sometimes used for anaesthesia or/and analgesia for programmed umbilical hernia surgery, allowed surgery with good conditions and procured prolonged postoperative analgesia. This block, easy to perform, is an interesting alternative in emergency for general or spinal anaesthesia in high-risk patients.