Effect Of Quadratus Lumborum Block Research Articles

Efficacy of quadratus lumborum block in the treatment of acute and chronic pain after cesarean section: A systematic review and meta-analysis based on randomized controlled trials.

This analysis aimed to explore the analgesic effects of quadratus lumborum block on acute and chronic postoperative pain among patients undergoing cesarean section. PubMed, Cochrane, Embase, Web of Science, China National Knowledge Infrastructure, Wanfang, and VIP databases for Randomized Controlled Trials (RCTs) that focused on the use of quadratus lumborum block in cesarean section procedures were searched from the inception of the databases until December 2022. Studies were screened based on inclusion and exclusion criteria, and were then conducted for quality assessment and data extraction. Meta-analysis was performed using Stata 15.0 software. Two researchers independently screened the studies, extracted data, and evaluated the risk of bias for the included studies. In case of any disagreements, it was resolved by consultation with a third party opinion. A total of 21 studies involving 1976 patients were finally included, with an overall acceptable study quality level. Compared to the control group, the administration of Quadratus Lumborum Block (QLB) resulted in significant reduction in the postoperative 24-hour visual analog scale (VAS) score (WMD = -0.69, 95% CI: -1.03 ~ -0.35, P < .001) and the consumption of opioid analgesics within 24 hours after surgery (WMD = -2.04, 95% CI: -2.15 ~ -1.92, P = .002). The incidence of chronic pain 3 months QLB (OR = 0.41, 95% CI: 0.09 ~ 1.88, P = .253) and 6 months (OR = 0.83, 95% CI: 0.33 ~ 2.07, P = .686) after surgery were observed to increase as compared with the control group. The use of QLB for postoperative analgesia after cesarean section, particularly in the relief of acute postoperative pain, had been proven to significantly decrease the VAS score and morphine consumption within the first 24 hours after surgery. However, further studies are needed to determine its impact on managing chronic postoperative pain.

Effects of anterior approach to quadratus lumborum block on postoperative cognitive function following hip surgery in older people: a randomized controlled clinical trial

BackgroundPeripheral nerve block, including the quadratus lumborum block (QLB), has been used for postoperative analgesia in hip surgery. However, the effects of QLB on cognitive function after hip surgery remain unknown. This study aimed to assess the effects of the anterior approach to QLB on postoperative cognitive function in older people undergoing hip surgery.MethodsSixty older people who underwent hip surgery from May 2021 to May 2022 were randomly divided into the QLB (n = 30) and control groups (n = 30). The Montreal Cognitive Assessment (MoCA) score (mean ± SD) was measured one day preoperatively and seven and 30 days postoperatively. The frequency (%) of postoperative cognitive dysfunction (POCD) was examined seven and 30 days postoperatively. The visual analog scale (VAS) scores at rest and Bruggrmann comfort scale (BCS) scores [Median (IQR)] 6 h (t1), 12 h (t2), 24 h (t3), and 48 h (t4) after surgery were assessed. The plasma high mobility group box protein 1 (HMGB1) and levels of interleukin-6 (IL-6) (mean ± SD) were evaluated 1 h preoperatively (baseline) and 24 h postoperatively (day 1). The requirement for rescue analgesia [Median (IQR)], time to first off-bed activity (mean ± SD), and adverse effects after surgery were also recorded.ResultsCompared with the control group, the frequency of POCD was significantly lower in the QLB group seven days postoperatively (10.7% vs. 34.5%, P = 0.033), but no difference at 30 days postoperatively (3.6% vs. 10.3%, P = 0.319). There was no significant difference in MoCA scores between the two groups at one day preoperatively and 30 days postoperatively. However, the MoCA scores at seven days postoperatively were higher in the QLB group than in the control group (27.4 ± 1.81 vs. 26.4 ± 1.83, P = 0.043). In the QLB group, the VAS scores at t1, t2, and t3 were lower [3(2–4) vs. 4(3–4), P = 0.028; 3(2–3) vs. 4(3–5), P = 0.009; 2(1–3) vs. 2(2–3), P = 0.025], and the BCS scores at t1, t2, and t3 were higher than those in the control group [3(1–3) vs. 1(1–2), P = 0.006; 3(2–3) vs. 2(1–3), P = 0.011; 3(2–4) vs. 2(2–3), P = 0.041]. The patients in the QLB group reported significantly fewer requirements for rescue analgesia [0(0–1) vs. 1(0–2), P = 0.014]. The plasma levels of HMGB1 and IL-6 at 24 h postoperatively in the QLB group were significantly lower than in the control group (749.0 ± 185.7 vs. 842.1 ± 157.9, P = 0.046; 24.8 ± 8.1 vs. 31.9 ± 5.5, P < 0.001). The time to first off-bed activity from the end of surgery was shorter in the QLB group (25.3 ± 5.3 vs. 29.7 ± 6.9, P = 0.009). There was no significant difference in the incidence of postoperative complications between the two groups.ConclusionsAnterior QLB given to older people undergoing hip surgery could promote early postoperative cognitive function recovery, provide adequate postoperative analgesia, and inhibit the release of inflammatory factors.Trial registrationChictr.org.cn identifier ChiCTR2000040724 (Date of registry: 08/12/2020, prospectively registered).

Evaluation of the effect of quadratus lumborum block on intraoperative and postoperative analgesic requirements in dogs undergoing elective ovariohysterectomy

Evaluation of the effect of quadratus lumborum block on intraoperative and postoperative analgesic requirements in dogs undergoing elective ovariohysterectomy

Comparative analysis of lumbar quadratus lumborum block and epidural block for analgesia in uterine surgery at Dr. Soetomo Hospital, Surabaya.

Over 80% of surgical patients experience postoperative pain, which, if inadequately managed, can lead to complications, prolonged rehabilitation, chronic pain, and decreased quality of life. Epidural block and quadratus lumborum block are techniques commonly used for postoperative pain management. This comparative analytic study aimed to analyze the differences in the analgesic effects of quadratus lumborum block and epidural block in uterine surgery at Dr. Soetomo General Hospital. The outcomes assessed were the numerical rating score (NRS) as a pain score and the administration of opioids as an adjuvant analgesic. Statistical analysis employed the Mann-Whitney test and Chi-square test. The study included 32 patients who underwent uterine surgery at Dr. Soetomo General Hospital and met the inclusion and exclusion criteria. Among the patients, 90.6% experienced mild pain, and 9.4% experienced moderate pain. Epidural blocks were performed in 50% of the patients, while quadratus lumborum blocks were performed in the other 50%. Additionally, 9.4% of the patients received opioids as adjuvant analgesics. The Mann-Whitney test revealed no significant difference in NRS between the epidural block and quadratus lumborum block groups (p-value>0.05). However, the Chi-square test indicated a significant difference in NRS between patients who received additional opioids as adjuvant analgesics and those who did not (p-value<0.00). There was no significant difference in NRS between patients who underwent epidural block and quadratus lumborum block as analgesic techniques.

A Comparative Study of Transversus Abdominis Plane Block versus Quadratus Lumborum Block for Postoperative Analgesia following Lower Abdominal Surgeries

Abstract Background Operations rate increased those days and postoperative pain control. The goal of postoperative pain management is provision of comfort, early mobilization and improved respiratory function without causing inadequate sedation and respiratory compromise, which can be achieved through using multimodal analgesic therapy, preference for regional techniques, avoidance of sedatives, non-invasive ventilation with supplemental oxygen and early mobilization. Aim of the Work This work aims to compare the efficacy of Transversus Abdominis Plane (TAP) Block versus Quadratus Lumborum 2 (QL 2) Block on postoperative period regarding pain control, total opioid given in the first 24-hour post-operative, VAS score and first time to ask for analgesia in patients undergoing lower abdominal surgeries. Patients and Methods After approval of the anesthesiology department and scientific and ethical committees, this Randomized controlled trial study was conducted in Ain Shams University Hospitals. Forty patients scheduled for elective lower abdominal surgeries were included in this study. The patients' age was ranged from 21 to 65 years and with the American Society of Anesthesiologists (ASA) Class-I and II. At the end of the surgery, patients were randomized using a random number table and the use of a closed envelopes technique to receive either quadratus lumborum block (Group QLB), or TAP (transversus abdominis plane) block (Group TAP), each group constitutes of 20 patients. Results In this study, the effect of quadratus lumborum block and transversus abdominis plane block result of decreased incidence and severity of postoperative pain (VAS) resulting in decrease in incidence and degree of sedation and opioid total requirement. The present study showed that the quadratus lumborum block was more efficient than the tansversus abdominis plane block. The first rescue for analgesia (pethidine), total pethidine consumption and pain scores (visual analog scale) indicated that the superiority of the QL block technique affected the TAP block technique. The patients of group TAB had higher pain scores and were the first to ask for rescue analgesia; therefore, they had highest total pethidine consumption in the first 24 hours postoperatively in comparison to patients of group QLB. This is mainly due to the extension of the local anesthetic agent beyond the transverse abdominal plane to the thoracic paravertebral space, which then results in more analgesia, even somatic and visceral pain control. Conclusion Quadratus lumborum block was the most effective technique in providing analgesia after lower abdominal surgeries in comparison to transversus abdominis plane block and even more time covering to rescue opioid.

Effect of Quadratus Lumborum Block on Pain and Stress Response after Video Laparoscopic Surgeries: A Randomized Clinical Trial.

There are many surgical and anesthetic factors that affect pain and the endocrine-metabolic response to trauma. The ability of anesthetic agents and neuronal blockade to modify the response to surgical trauma has been widely studied in the last few years. To evaluate if the anterior quadratus lumborum block contributes to improved surgical recovery, using as parameters analgesia, pulmonary function and neuroendocrine response to trauma. We carried out a prospective, randomized, controlled, and blinded study, in which 51 patients scheduled for laparoscopic cholecystectomy. Patients were randomly selected and assigned to 2 groups. The control group received balanced general anesthesia and venous analgesia, and the intervention group was treated under general, venous analgesia and anterior quadratus lumborum block. The parameters evaluated were: demographic data, postoperative pain, respiratory muscle pressure and inflammatory response to surgical stress with the plasma dosage of IL-6 (Interleukin 6), CRP (C-Reactive protein) and cortisol. Anterior quadratus lumborum block induced the slowing of IL-6 cytokine production and a decrease in cortisol release. This effect was accompanied by the significant reduction of postoperative pain scores. Anterior quadratus lumborum block is an important strategy for analgesia in abdominal laparoscopic surgery and contributes to reducing the inflammatory response to surgical trauma with an early return of preoperative baseline physiological functions.

Efficiency and safety of quadratus lumborum block in percutaneous nephrolithotomy: a meta-analysis of randomized controlled studies

To evaluate the effect of quadratus lumborum block (QLB) for postoperative analgesia after percutaneous nephrolithotomy (PCNL), we searched Pubmed, Embase, Cochrane library, the Chinese Biomedical Literature Database, and randomized controlled trials (RCTs) assessing analgesic efficacy of QLB for PCNL are included in this meta-analysis. The related trials met the inclusion criteria were analyzed using RevMan 5.4 software, the weighted mean difference (WMD), with their corresponding 95% CI, was calculated to compare continuous variables. Nine RCTs are included in the meta-analysis showed that QLB group had significantly lower opioids consumption (WMD -29.59 95% CI -43.64 to -15.55; P < 0.00001), lessen visual analog scale (VAS) after surgery 2h (WMD -1.35, 95% CI -1.93 to -0.76; P < 0.00001), 6h (WMD -1.47, 95% CI -2.04 to -0.91; P < 0.00001) 12h (WMD -1.75, 95% CI -3.17 to -0.32; P = 0.02) and 24h (WMD -1.4, 95% CI -1.86 to -0.94; P < 0.00001), shorter hospital stay(WMD-0.7, 95% CI -1.26 to -0.14, P < 0.00001) and reduce intestinal exhaust recovery time (WMD -7.41, 95% CI -9.36 to -5.46, P < 0.00001) than in the control group. QLB offers some potential advantages in terms of opioids consumption, VAS, hospital stay and intestinal exhaust recovery time. However, good quality and large studies with long-term follow-up are warranted for further research.

Effects of quadratus lumborum block on perioperative multimodal analgesia and postoperative outcomes in patients undergoing radical prostatectomy

BackgroundThis study aimed to investigate the effects of ultrasound-guided quadratus lumborum block (QLB) on perioperative multimodal analgesia and postoperative outcomes in patients undergoing radical prostatectomy.MethodsA total of 80 patients undergoing radical prostatectomy were randomly divided into two groups: general anaesthesia with QLB (QLB group; n = 40) and general anaesthesia with sham QLB (normal saline [NS] group; n = 40). QLB or sham QLB was performed before the induction of anaesthesia. Sufentanil was intravenously administered for postoperative analgesia. The primary outcome was the pain score (measured using a numerical rating scale [NRS]) at different time points within 48 h postoperatively. Secondary outcomes included the cumulative dose of sufentanil within 48 h postoperatively, subjective comfort, grip strength, first time of exhaustion, first fluid intake time, time to get out of bed, length of postoperative hospital stay and overall satisfaction. The SPSS software, version 17.0, was used for all statistical analyses.ResultsPostoperative NRS at rest was significantly lower at 2 h (1.7 ± 1.1 versus 3.0 ± 2.1), 4 h (1.8 ± 1.2 versus 4.1 ± 2.3), 6 h (1.9 ± 2 versus 4.4 ± 2) and 12 h (3.5 ± 2.3 versus 5 ± 3.3) and was also lower when coughing at 2 h (2.3 ± 1.1 versus 4 ± 2.1), 4 h (2.3 ± 1. 1 versus 4.3 ± 2) and 6 h (2.4 ± 1.1 versus 5.9 ± 2.3) in the QLB than that in the NS group. The cumulative dose of sufentanil was significantly lower in the QLB than that in the NS group at 4 h, 6 h, 12 h, 24 h and 48 h. The nausea score was significantly lower in the QLB group at 24 h postoperatively, and the first time of exhaustion and time to get out of bed were significantly shorter (P < 0.05). The overall satisfaction score was significantly higher in the QLB than in the NS group (4 ± 0.7 versus 2.6 ± 0.9).ConclusionUltrasound-guided bilateral QLB can provide effective postoperative analgesia for patients undergoing radical prostatectomy, reduce the need for sufentanil, facilitate comfort and improve postoperative outcomes. QLB can be a good component of multimodal analgesia.Trial registrationThe clinical trial is registered in the Chinese Clinical Trial Registry (ChiCTR). Current Controlled Trials:ChiCTR1900022009. the date of registration:2019/03/20.

Perioperative analgesia with ultrasound-guided quadratus lumborum block for transurethral resection of prostate.

Background:Prostatic hyperplasia is a physiological aging process in men. After transurethral resection of prostate (TURP), visceral pain is the main cause. The effective postoperative analgesia can reduce the occurrence of postoperative complications. This study mainly studied the analgesic effect of quadratus lumborum block (QLB) on TURP.Methods:We divided 62 patients undergoing TURP into 2 groups using a random number table method (QLB 2 group and non-QLB [control] group). Patients in the QLB group underwent ultrasound-guided posterior QLB with 20 mL of 0.25% ropivacaine on each side, and those in the control group received only general anesthesia. The primary outcome for this study was the consumption analgesic pump during 0 to 24 hours. The secondary outcomes included the first pressing time of analgesic pump during 0 to 24 hours, the pain at rest and when coughing at 1, 4, 8, 12, and 24 hours post-operation as measured with a visual analogue scale for pain, length of the hospital stay, and complications (nausea and vomiting, dizziness, and abdominal distension).Results:Patients in the QLB group presented less consumption, later first pressing time of analgesic pump during 0 to 24 hours after surgery lower visual analogue scale scores at 1, 4, 8, 12, and 24 hours postsurgery than those in the control group. Moreover, their mean length of hospital stay was shorter (P = .023), and they experienced less postoperative complications than the patients in the control group.Conclusions:Ultrasound-guided QLB in TURP provided a significant analgesic effect in our patients the first day after surgery. This analgesic model may improve the postoperative recovery after TURP.

Оценка аналгетической эффективности блокады квадратной мышцы поясницы (quadratus lumborum block) у детей после оперативных вмешательств на органах брюшной полости

Исследование проведено у 34 детей после выполнения оперативных вмешательств на органах брюшной полости. В зависимости от методики обезболивания пациенты были разделены на 2 группы: в 1-й группе использовали блокаду квадратной мышцы поясницы (quadratus lumborum block), во 2-й группе назначали только внутривенную непрерывную инфузию фентанила. Проведение многокомпонентной анальгезии (с использованием блокады квадратной мышцы поясницы) значительно уменьшает негативные последствия недостаточного обезболивания у детей и способствует эффективной анальгезии после травматических операций, уменьшает проявления синдрома интраабдоминальной гипертензии и улучшает кровоток в сосудах брюшной полости.

Effect of quadratus lumborum block on postoperative cognitive function in elderly patients undergoing laparoscopic radical gastrectomy: a randomized controlled trial

BackgroundQuadratus lumborum block (QLB) is a novel and effective postoperative analgesia method for abdominal surgeries. However, whether QLB can affect early postoperative cognitive function by inhibiting surgical traumatic stress and the inflammatory response remains unclear. This study aimed to explore the effect of QLB on postoperative cognitive function in elderly patients undergoing laparoscopic radical gastrectomy.MethodsSixty-four elderly patients who underwent laparoscopic radical gastrectomy were randomly divided into the QLB group (Q group, n = 32) and control group (C group, n = 32). The Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA) were used to measure cognitive function 1 day before and 7 days after surgery. Postoperative cognitive dysfunction (POCD) was defined as a decline of ≥ 1 SD in both tests. The visual analog scale (VAS) scores 6 h (T1), 24 h (T2), and 48 h (T3) after surgery were measured. The serum levels of high mobility group box protein 1 (HMGB1), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) were evaluated 1 day before surgery (baseline), and 1 day (day 1) and 3 days after surgery (day 3). The intraoperative remifentanil dosage, sufentanil consumption 24 h after surgery, recovery time from anesthesia, and adverse effects were also compared.ResultsPOCD was present in two patients in the QLB group and eight patients in the C group 7 days after surgery (6.7 % vs. 27.6 %, P = 0.032). The MMSE and MoCA scores were similar in both groups preoperatively, and the two scores were higher in the QLB group than in the C group 7 days after surgery (P < 0.05). The VAS scores were significantly lower in the Q group at all times after surgery (P < 0.05). Compared with the C group, the levels of HMGB1, TNF-α, and IL-6 were significantly decreased 1 and 3 days after surgery in the QLB group (P < 0.05). The remifentanil consumption intraoperatively and sufentanil 24 h postoperatively were significantly lower in the QLB group (P < 0.05). The recovery time from anesthesia was shorter in the QLB group (P < 0.05). No severe adverse effects occurred in either group.ConclusionsQLB could improve postoperative cognitive function in elderly patients undergoing laparoscopic radical gastrectomy. This may be related to the suppression of the inflammatory response after surgery.Trial registrationChictr.org.cn identifier ChiCTR1900027574 (Date of registry: 19/11/2019, prospectively registered).

Comparison of the analgesic effect of quadratus lumborum block and epidural block in open uterine surgery: a randomized controlled trial.

Effective regional analgesia during open surgery could reduce opioid consumption and enhance early recovery. We compared the effects of the newly developed quadratus lumborum block (QLB) and the traditional epidural block (EB) in open uterine surgery. In this randomized controlled trial, we included patients scheduled for elective open uterine surgery during May - September 30, 2019. Patients received QLB or EB for perioperative pain relief before general anesthesia. Perioperative opioid consumption, and numeric rating scale (NRS: 0-10) pain scores after surgery, heart rate (HR), mean arterial pressure (MAP), ephedrine and urapidil use during surgery, lower limb muscle strength, timing of first flatus and defecation, nausea, vomiting, and other complications within 24 h post-surgery, were the primary and secondary outcomes, respectively. Data of 72 (86%; 36/group) of 83 eligible patients were analyzed. Remifentanil consumption during surgery was higher in the QLB than in the EB group, while cumulative sufentanil consumption within 24 h post-surgery was similar between both groups. NRS pain scores at rest and during activity were higher at 1 h post-surgery, and MAP was higher at 5-, 15-, and 30-min postincision in the QLB than in the EB group; HR was similar between groups. Lower ephedrine requirements, higher lower limb muscle strength at 1 h post-surgery, and lower nausea incidence were observed in the QLB group. QLB produces a less intense but longer block and fewer side effects in the first 24 h after open uterine surgery than those produced by EB.

Analgesic efficacy of two approaches of ultrasound-guided quadratus lumborum block for laparoscopic renal surgery: A randomised controlled trial.

BACKGROUNDModerate-to-severe pain exists in the early postoperative period after laparoscopic renal surgery.OBJECTIVEWe investigated the analgesic effect of quadratus lumborum block (QLB) via two approaches in patients undergoing laparoscopic renal nephrectomy.DESIGNA randomised controlled trial.SETTINGAn academic tertiary care hospital in Beijing, China.PARTICIPANTSNinety-six patients aged 18 to 70 years who were scheduled for elective laparoscopic radical or partial nephrectomy.INTERVENTIONSEligible patients were allocated randomly to a control group (no block), lateral QLB group or posterior QLB group. Ultrasound-guided QLB was performed via either the lateral or posterior approach with 30 ml of 0.4% ropivacaine before surgery.MAIN OUTCOME MEASURESThe primary outcome was sufentanil equivalent consumption within 24 h. Among secondary outcomes, somatic and visceral pain intensity at rest and on coughing were assessed with a numerical rating scale (where 0 = no pain and 10 = the worst pain) until 24 h postoperatively.RESULTSSufentanil equivalent consumption did not differ among the three groups (118 ± 36 μg in the control group, 115 ± 47 μg in the lateral QLB group and 119 ± 40 μg in the posterior QLB group; P = 0.955). However, both somatic (lateral QLB vs. control, median difference −1, P < 0.001 at rest and −2 to −1, P < 0.001 on coughing; posterior QLB vs. control, −1, P < 0.001 at rest and −2 to −1, P < 0.001 on coughing) and visceral pain scores (lateral QLB vs. control, −1 to 0, P < 0.001 at rest and −1, P < 0.001 on coughing; posterior QLB vs. control, −1 to 0, P < 0.001 at rest and −2 to −1, P < 0.001 on coughing) were significantly lower in the two QLB groups than in the control group.CONCLUSIONFor patients undergoing laparoscopic renal surgery, a pre-operative single-shot QLB via the lateral or posterior approach did not decrease opioid consumption, but improved analgesia for up to 24 h after surgery.TRIAL REGISTRATIONwww.chictr.org.cn identifier: ChiCTR1800019883.

Postoperative Analgesic Effectiveness of Quadratus Lumborum Block for Cesarean Delivery under Spinal Anesthesia.

Spinal morphine is the mainstay of postcesarean analgesia. Quadratus lumborum block has recently been proposed as an adjunct or alternative to spinal morphine. The authors evaluated the analgesic effectiveness of quadratus lumborum block in cesarean delivery with and without spinal morphine. Randomized trials evaluating quadratus lumborum block benefits in elective cesarean delivery under spinal anesthesia were sought. Three comparisons were considered: spinal morphine versus spinal morphine and quadratus lumborum block; spinal morphine versus quadratus lumborum block; and no block or spinal morphine versus quadratus lumborum block. The two coprimary outcomes were postoperative (1) 24-h cumulative oral morphine equivalent consumption and (2) pain at 4 to 6 h. Secondary outcomes included area under the curve pain, time to analgesic request, block complications, and opioid-related side effects. Twelve trials (924 patients) were analyzed. The mean differences (95% CIs) in 24-h morphine consumption and pain at 4 to 6 h for spinal morphine versus spinal morphine and quadratus lumborum block comparison were 0 mg (-2 to 1) and -0.1 cm (-0.7 to 0.4), respectively, indicating no benefit. For spinal morphine versus quadratus lumborum block, these differences were 7 mg (-2 to 15) and 0.6 cm (-0.7 to 1.8), respectively, also indicating no benefit. In contrast, for no block or spinal morphine versus quadratus lumborum block, improvements of -18 mg (-28 to -7) and -1.5 cm (-2.4 to -0.6) were observed, respectively, with quadratus lumborum block. Finally, for no block or spinal morphine versus quadratus lumborum block, quadratus lumborum block improved area under the 48-h pain curve by -4.4 cm · h (-5.0 to -3.8), exceeding the clinically important threshold (3.96 cm · h), but no differences were observed in the other comparisons. Moderate quality evidence suggests that quadratus lumborum block does not enhance analgesic outcomes when combined with or compared with spinal morphine. However, the block improves postcesarean analgesia in the absence of spinal morphine. The clinical utility of this block seems limited to situations in which spinal morphine is not used.

POSTOPERATIVE ANALGESIA IN KIDNEY TRANSPLANT LAPAROTOMY: QUADRATUS LUMBORUM BLOCK AS AN ALTERNATIVE

Objective: Effective postoperative pain management promotes better recovery. Continuous epidural (CE) is the standard postoperative analgesia for kidney transplantation; however, patients still report pain and unfavorable side effects. This present study compares the effectiveness of quadratus lumborum block (QLB) versus CE for managing pain and reducing morphine requirements following kidney transplantation.&#x0D; Methods: This randomized-controlled study compared 37 kidney transplant patients: a QLB group (N=19) who received 20 ml 0.375% ropivacaine injection bilaterally and a CE group (N=18) who received 0.2% ropivacaine epidurally by infusion at 6 ml/h. Participants were assessed at 2, 6, 12, and 24h postoperatively for morphine requirements and with a visual analogue scale (VAS) for pain while resting and moving.&#x0D; Results: The VAS scores when resting and moving were similar for both QLB and CE at all-time points (p&gt;0.05 for both treatments). Postoperative morphine requirements also did not differ (p&gt;0.05) between the two groups at any time point. Both groups had similar first-time morphine requirements (802.63 min for QLB vs 871.39 min for CE, p=0.814). Both groups achieved 100% blockade at the level of T10–L1 and had comparable Bromage and Ramsay scores.&#x0D; Conclusion: QLB appears to be a viable alternative approach to CE for pain management after kidney transplantation.

Effectiveness of quadratus lumborum block for postoperative pain: a systematic review and meta-analysis.

This study aimed to evaluate the effect of quadratus lumborum (QL) block on pain after surgeries under general or spinal anesthesia. A systematic review and meta-analysis of randomized controlled trials (RCTs) were performed to compare pain scores at rest and with movement 48 h postoperatively in a QL block group and a control group both with placebo block and without block and the time to first additional analgesics. The analgesic effect of the QL block according to the type of surgery and block approach was also examined. A literature search was performed using well-known databases for articles published up to March 2019. Nine RCTs were included. Compared to the control group, pain scores at rest were significantly lower for 48 h postoperatively in the QL block group. QL block reduced pain scores with movement at six, 12, and 24 h postoperatively. The QL block group exhibited the most improved numerical pain scores at 12 h postoperatively both at rest and with movement, with a mean difference (MD) of -2.16 (95% confidence interval [CI] -3.12 to -1.20) and -2.26 [95% CI -3.54 to -0.98]), respectively. The subgroup analysis of pain scores at rest showed a statistically significant subgroup difference (P=0.02, I2=75.7%), suggesting a different analgesic effect of QL block based on the approach. Time to first additional analgesics postoperatively was longer in the QL block group than in the control group (MD 333.51 minutes [95% CI 69.37 to 597.64]). QL block may be a good multimodal analgesic approach for pain after abdominal surgeries.

To evaluate the effect of quadratus lumborum block on the tramadol sparing effect in patients undergoing open inguinal hernia surgery: A randomised controlled trial.

Background and Aims:An ultrasound-guided quadratus lumborum (QL) block provides both somatic and visceral analgesia in abdominal surgeries. We aimed to evaluate the postoperative tramadol sparing effect of single-shot anterior QL block in inguinal hernia surgery patients.Methods:This prospective, randomised controlled trial was conducted in a single tertiary care centre over a period of 1 year. A total of 50 patients, American Society of Anaesthesiologists (ASA) physical status I–II of both sexes aged 18–80 years with body mass index (BMI) ≥20 to ≤35 kg/m2 undergoing uncomplicated unilateral inguinal hernia surgery under spinal anaesthesia (SA) were randomly allocated to either of the two groups. The block group (n = 25) received single-shot anterior QL block with 20 ml of 0.5% ropivacaine and the control group (n = 25) received no block. Postoperatively, patients received intravenous (IV) paracetamol 1g every 6 h and tramadol patient-controlled analgesia up to 24 h. Primary outcome was total tramadol consumption at 24 h postoperatively.Results:The total tramadol consumption mean ± SD [95% CI (range)] at 24 h in the block group was 84.00 ± 37.86 [68.37–99.63 (20–160)] mg versus 93.60 ± 34.99 [79.16–108.04 (20–160)] mg in control group, (p value = 0.36). Postoperative VAS score, haemodynamics, and patient satisfaction score were similar in both the groups. No adverse events were reported.Conclusion:A single-shot anterior QL block did not establish a postoperative tramadol-sparing effect at 24 h as compared to no block in patients undergoing inguinal hernia surgery under SA.

Effect of quadratus lumborum block on postoperative analgesic requirements in pediatric patients: a randomized controlled double-blinded study.

Quadratus lumborum block (QLB) is a newly-defined trunk block performed with local anesthetic injection by imaging the abdominal muscles with ultrasonography (US) guidance; thus, analgesia is expected to be ensured from the T7-L1 dermatomal segment level. In the study, the aim was making the comparison between the quadratus lumborum block and the intravenous analgesia with tramadol on postoperative analgesic effect in pediatric patients undergoing lower abdominal surgery. Patients included in the study were randomly divided into two groups. Cases were assessed as intravenous opioid with 1 mg/kg tramadol HCl (Group O, N.=20) or ultrasonography-guided quadratus lumborum block (Group B, N.=20). Total analgesic amounts in 24 hours and first analgesic requirement times recorded. First analgesic requirement was recorded 3.5 hours later for Group O and eight hours later for Group B, indicating a statistically significant difference (P<0.05). When analgesic consumption in the first 24 hours postoperative is examined, fewer patients in the QLB group required oral paracetamol (P<0.05), therefore lower amounts of oral paracetamol were used (P<0.05). In conclusion, we believe QLB1 provides effective analgesia in the postoperative period for lower abdominal surgery in pediatric patients.

Effect of quadratus lumborum block on postoperative analgesia in cesarean section under general anesthesia

Objective To observe the analgesic effect of quadratus lumborum block (QLB) in cesarean section under general anesthesia. Methods 50 patients underwent cesarean section under general anesthesia were randomly divided into two groups (n=25): patients in QLB group (group Q) received QLB at the end of surgery with 0.3% ropivacaine 25ml, and the control group (group C) patients were disinfected at the same site but did not puncture. The visual analogue scale (VAS) and pain Bruggrmann comfort score (BCS) were recorded at 2, 6, 12, 24, and 48 hours after surgery. The patient's general condition, vital signs and postoperative analgesia-related adverse reactions were recorded. Results There were no significant differences between the two groups in general information and surgical related indexes (P>0.05). The VAS scores of the Q group were lower than the control group at 2, 6, 12 and 24 hours, and the BCS score was higher than that in the control group (P 0.05). Conclusions Quadratus lumborum block combined with intravenous analgesia can reduce the pain score within 24 hours after cesarean section under general anesthesia and improve postoperative analgesia comfort. Key words: Nerve block; Psoas muscles; Anesthesia, general; Cesarean section; Analgesia