Postoperative Analgesic Consumption Research Articles

Effects of dexamethasone on the EC50 of remifentanil combined with dexmedetomidine achieving analgesia during pancreatic extracorporeal shockwave lithotripsy: a prospective, randomized and controlled study

BackgroundIn addition to their classic genomic effects, glucocorticoids also manifest rapid non genomic effects. We speculate that dexamethasone has the potential prompt onset of analgesic effects. The objective of this study is to investigate the influence of a single preoperative dose of dexamethasone on the half maximal effective concentration (EC50) of remifentanil when combined with dexmedetomidine for pain relief during pancreatic extracorporeal shockwave lithotripsy (P-ESWL).MethodsA total of 60 patients undergoing P-ESWL were enrolled and randomized at 1:1 ratio into the dexamethasone (DXM) group and the placebo group. Before anesthesia induction, patients in DXM group received an intravenous injection of 8 mg dexamethasone, while subjects in placebo group received an equal dose of physiological saline. Monitored anesthesia care (MAC) was performed based on remifentanil in combination with dexmedetomidine. Remifentanil was administered by TCI with an initial target concentration of 2.5 µg/mL for both groups. A positive response was defined as that VAS score > 3 by the patient at any time during the procedure. Subsequent target concentrations were adjusted by Dixon up-down sequential method, where dose modifications were performed by 0.3 ng/mL intervals, based on the response of the previous patient. The EC50 of remifentanil for pain relief during P-ESWL treatment was calculated using Dixon’s up-and-down method. Hemodynamic variables, oxygen saturation and adverse events were also recorded.ResultsDixon up-and-down method revealed that the EC50 of remifentanil was significantly higher in placebo group (2.65 ± 0.28 ng/mL) than in DXM group (2.02 ± 0.23 ng/ml) (P < 0.001). Hemodynamic parameter exhibited a significant decrease in mean arterial pressure (MAP) and heart rate (HR) before and after induction in placebo group; however, data of the two groups were comparable (P>0.05). Less adverse events occurred in DXM group, including the incidence of postoperative nausea and vomiting (PONV) and analgesia requirement with in the first 24 h following the procedure at ward.ConclusionDexamethasone exerted analgesic effects with a rapid onset, and patients received dexamethasone 8 mg preoperative had a lower required EC50 of remifentanil during P-ESWL. It is also associated with reduced PONV in addition to reduced postoperative analgesic consumption in the first postoperative 24 h.Trial registrationRegistered in the Chinese Clinical Trial Registry (ChiCTR2300078171) on 30/11/2023.

Postoperative analgesic effectiveness of ultrasound-guided bilateral erector spinae plane block vs. rectus sheath block for midline abdominal surgery in a low- and middle-income country: a randomised controlled trial.

The use of erector spinae plane block and rectus sheath block for postoperative analgesia in midline abdominal procedures is becoming more common. However, the most effective and appropriate method remains unclear. We aimed to compare the postoperative analgesic effecacy of ultrasound-guided bilateral erector spinae plane blocks with rectus sheath blocks for midline abdominal surgery in a low- and middle-income country. We allocated randomly 72 patients aged 18-65 y undergoing midline abdominal surgery to an erector spinae plane block (n = 36) or a rectus sheath block (n = 36) utilising a prospective, parallel study design. Patients, care providers and outcome assessors were blinded to the interventions. The primary outcome measures were total postoperative analgesia consumption, postoperative pain severity and time to first rescue analgesic administration. Secondary outcomes included the incidence of postoperative complications and adverse events. Of 78 patients assessed for eligibility, six were excluded, leaving 72 for analysis. Patients allocated to erector spinae plane block had a lower mean (SD) postoperative opioid consumption compared with those allocated to rectus sheath block (3.5 (8.7) morphine milligram equivalents vs. 8.2 (2.8) morphine milligram equivalents, respectively; p = 0.003). Time to first analgesic request was greater in patients allocated to erector spinae plane block compared with those allocated to rectus sheath block (mean (95%CI) 16 (13-17) h vs. 12 (11-13) h, respectively; p < 0.001). There were no block-related complications in either group. Erector spinae plane blocks are more effective than rectus sheath blocks for the management of postoperative pain following midline abdominal surgery. Integration of erector spinae plane blocks into multimodal opioid-sparing analgesic strategies after midline abdominal surgeries may promote enhanced patient recovery in low-and middle-income countries.

The role of adjuvants in regional anesthesia: the postoperative analgesic effectiveness of dexamethasone vs. tramadol given as adjuvants to bupivacaine for ultrasound-guided supraclavicular block for upper extremity surgery—a prospective cohort study

BackgroundBrachial plexus block is used as a surgical anesthesia and analgesia for postoperative pain. Recently, the use of local anesthetics for regional nerve block has been enhanced by mixing them with a different class of drugs as adjuvants. These adjuvants of local anesthetics improved the quality and duration of nerve block and reduced the dose-dependent side effects of local anesthetics. However, the effectiveness of these adjuvants varies depending on the nature of the nerve block and the type of local anesthetics used. Therefore, we aimed to compare the postoperative analgesic effectiveness of dexamethasone vs. tramadol when used as adjuvants to bupivacaine for ultrasound-guided supraclavicular block in upper extremity surgery.MethodsUtilizing a prospective cohort study design, 126 consecutive patients who were undergoing upper extremity surgery with ultrasound-guided supraclavicular block were included. Patients were divided into three groups based on the preference of the responsible anesthetist to use adjuvants with bupivacaine for the block. The dexamethasone group (n = 42) were given 30 ml of 0.25% bupivacaine with 8 mg dexamethasone, the tramadol group (n = 42) were given 30 ml of 0.25% bupivacaine with 100 mg tramadol, and the non-adjuvant group (n = 42) were given 30 ml of 0.25% bupivacaine alone. The primary outcomes evaluated were postoperative pain severity using the numerical pain rating scale (NRS), the duration of analgesia, and the total postoperative analgesic consumption. Secondary outcomes included the incidence of postoperative complications.ResultA total of 126 patients were recruited and analyzed. There was no statistical difference in the demographic data among the groups. The postoperative NRS score was significantly reduced in the dexamethasone and tramadol group compared with the non-adjuvant group (p &amp;lt; 0.001). The NRS score in the dexamethasone group at 18 and 24 h was statistically much lower than in the tramadol and non-adjuvant group. The postoperative duration of analgesia was significantly prolonged in the dexamethasone (1,069 ± 316.99 min) group compared with the tramadol (617.02 ± 214.05 min) and non-adjuvant (434.17 ± 111.23 min) groups (p &amp;lt; 0.001). Patients in the non-adjuvant group had a significantly higher total analgesic consumption over 24 h. The dexamethasone group experienced significantly fewer incidences of nausea, with no differences in other complications among the groups.ConclusionThe addition of dexamethasone as an adjuvant to bupivacaine for ultrasound-guided supraclavicular block improves postoperative analgesia. We recommend the integration of dexamethasone as an adjuvant to local anesthetics during nerve blocks to enhance postoperative pain management after surgery.

Comparison of ropivacaine with ropivacaine–dexamethasone combination for postoperative analgesia in the pectoral nerve block for modified radical mastectomy: A randomized clinical trial

Abstract Background and Aims: The pectoral nerve block types I and II are novel techniques to provide analgesia for modified radical mastectomy (MRM) surgeries performed under general anesthesia. The primary objective of this study was to compare the duration of effective analgesia, and the secondary objectives were to evaluate the total amount of rescue analgesics in 24 h, hemodynamic changes, and postoperative adverse effects. Methods: This prospective, randomized, double-blind study was conducted on a total of 80 women with breast cancer belonging to American Society of Anesthesiologist class I and II scheduled for MRM, which were randomly allocated into two groups – Group R (n = 40) received 0.25% ropivacaine 29 ml + NS 1 ml and Group RD (n = 40) received 0.25% ropivacaine 29 ml + dexamethasone (4 mg) 1 ml. Ten milliliters of the study drug was used in Pecs I and the rest 20 ml in Pecs II block posttumor resection. Results: The duration of analgesia was statistically significantly longer in RD (778.75 ± 55.12 min) compared to Group R (412.63 ± 21.69 min) (P &lt; 0.05). Pain scores were significantly less in Group RD. The mean dose of acetaminophen required was significantly less in Group RD (2362.50 ± 375.32 mg) than in Group R (3525.00 ± 298.50 mg) (P &lt; 0.05). The incidence of adverse events was similar in both groups. Conclusion: The addition of dexamethasone with ropivacaine in the Pecs block can be used for prolonging the effective duration of analgesia and decreasing postoperative analgesic consumption with comparable hemodynamic and side effect profiles.

Effect of a comfort scale compared with a pain numerical rate scale on opioids consumption in postanaesthesia care unit: the COMFORT study

BackgroundThe way that pain is assessed in the PACU could impact on postoperative pain and analgesic consumption. However, there is currently no evidence to support this speculation. The authors hypothesised that using a comfort scale reduces postoperative opioid consumption when compared with a standard numerical rating scale (NRS) to evaluate pain in the PACU. MethodsIn this cluster-randomised trial, patients were assessed using either a comfort scale (comfort group) or a pain NRS (NRS group). The primary outcome was the opioid consumption in the PACU. The main secondary outcomes were postoperative pain, nausea and vomiting, length of stay in the PACU, and satisfaction. ResultsOf 885 randomised patients, 860 were included in the analysis. Opioid consumption in the PACU was comparable in the comfort and NRS groups (median [interquartile range [IQR] 0 (0–5) vs 0 (0–6); P=0.2436), irrespective of the type of surgical procedure. The majority of patients did not need any postoperative opioid (59% in the comfort group and 56% in the NRS group, P=0.2260). There was no difference in postoperative pain, nausea and vomiting, time to reach an Aldrete score ≥9 after extubation, and global satisfaction. ConclusionsUsing a comfort scale to assess pain in the PACU did not spare any opioid compared with use of a standard NRS. Further studies focusing on patients at risk of increased postoperative opioid consumption are necessary. Clinical trial registrationNCT05234216.

Effect of non-invasive bilateral sphenopalatine ganglion block on postoperative pain in patients undergoing septorhinoplasty surgery: a randomized controlled study.

The objective of this study was to assess the impact of preoperative sphenopalatine ganglion block (SPGB) on postoperative pain and assess intraoperative and postoperative analgesic consumption in patients undergoing septorhinoplasty. In this prospective, randomized controlled study, 72 patients were included and divided into two groups: group 1 (36 patients) received the sphenopalatine ganglion block (SPGB), while group 2 (36 patients) served as the control group. Patient assessments, using the numerical rating scale (NRS), were conducted at the postoperative first hour, fourth hour, and 24th hour. Additionally, intraoperative hemodynamics, analgesic requirements, and postoperative analgesic requirements were documented. The patients in group 1 exhibited significantly lower NRS scores at postoperative first, fourth, and 24th hour than those in group 2 (P<0.001 for all three time points). Additionally, the mean Riker Sedation-Agitation Scale (RSAS) scores were significantly lower in group 1 than in group 2 (P=0.006). Both intraoperative remifentanil use and postoperative analgesic consumption were significantly higher in patients in group 2 (P<0.001 and 0.004, respectively) than those in group 1. Analysis of intraoperative heart rate and mean arterial pressure (MAP) revealed that patients in group 1 had lower postoperative heart rates (P=0.040) than those in group 2, and MAP values after intraoperative block, at 30 min, and postoperatively were significantly lower (P=0.005, P=0.001, and P=0.034, respectively) than those in group 2. We advocate for the adoption of the noninvasive SPGB method in patients undergoing septorhinoplasty surgery. This approach significantly reduces the need for intraoperative analgesics, alleviates postoperative pain, and reduces the demand for postoperative analgesics. Moreover, it improves the overall surgical experience because of its ease of application, contributing to a more comfortable surgical process.

Pectoral Nerve Block II for Cardiac Implantable Electronic Devices.

This study aimed to assess the feasibility and effectiveness of the pectoral nerves (PECS) II block in facilitating cardiac implantable electronic device (CIED) insertion in a sample of 120 patients, with a focus on the percentage of cases completed without additional intraoperative local anesthesia. PECS II blocks were performed on the left side using ultrasound guidance in all 120 patients. Feasibility was assessed by the proportion of cases completed without the need for extra intraoperative local anesthetic. Secondary outcomes included the amount of additional local anesthetic used, intraoperative opioid requirements, postoperative pain scores, time to first postoperative analgesia, analgesic consumption, patient satisfaction, and block-related complications. Of the 120 patients, 78 (65%) required additional intraoperative local anesthetic, with a median volume of 8.2 mL (range 3-13 mL). Fifteen patients (12.5%) needed intraoperative opioid supplementation. Nine patients (7.5%) required postoperative tramadol for pain relief. In total, 98 patients (81.7%) reported high satisfaction levels with the procedure. The PECS II block, when combined with supplementary local anesthetic, provided effective postoperative analgesia for at least 24 h in 120 patients undergoing CIED insertion. While it did not completely replace surgical anesthesia in most cases, the PECS II block significantly contributed to a smoother intraoperative experience for patients.

Sphenopalatine ganglion block for pain control after septoplasty: a systematic review and meta-analysis with trial sequential analysis.

Septoplasty corrects a deviated nasal septum (DNS) and improves nasal obstruction. Sphenopalatine ganglion block (SPGB) effectively reduces postoperative pain after septoplasty, but conclusive evidence is still lacking. This systematic review and meta-analysis aim to comprehensively evaluate the analgesic efficacy of SPGB in septoplasty patients. We systematically searched PubMed/Medline, Scopus, Web of Science, Embase, and CENTRAL from inception to April 10th, 2024. Randomized controlled trials (RCTs) were assessed using the RoB-2 tool. The primary outcomes were postoperative pain scores, analgesic consumption, surgery duration, postoperative nausea and vomiting (PONV), and patient satisfaction. Continuous data were pooled as mean difference (MD), and dichotomous data as risk ratio (RR) with a 95% confidence interval (CI) using STATA software. Additionally, trial sequential analysis (TSA) was conducted. Three RCTs with 180 patients were included. Two RCTs had a 'low risk' of bias, while one RCT had 'some concerns'. The SPGB group had significantly lower postoperative pain within 24 hours compared to controls, particularly after particularly after 1-2 hours (MD = -1.85), 4-6 hours (MD = -2.02), 12 hours (MD = -2.14), and 24 hours (MD = -2.36) TSA confirmed the conclusive evidence. Analgesic use was significantly reduced in the SPGB group. No significant differences were observed in surgery duration or PONV rates between groups. Patient satisfaction was significantly higher in the SPGB group. SPGB demonstrates efficacy and safety in managing postoperative pain in patients undergoing septoplasty for DNS.

Assessing the impact of opioid-free anesthesia using the modified Mulimix technique on postoperative pain in bariatric surgery patients: a correlative randomized double-blinded trial

Background &amp; objective: The effective management of postoperative pain in bariatric surgery poses significant challenges to the anesthesiologists and the surgeons. Opioids have been the mainstay of postoperative pain management; but recently, opioid-free anesthesia (OFA) has been a popular option in an effort to prevent the opioid related side-effects. The objective of this study was to assess the effects of OFA utilizing the modified mulimix technique on the levels of plasma interleukin-2 (IL-2) and interleukin-6 (IL-6). In addition, the study aimed to evaluate the duration of analgesia and the analgesic requirements during the first 24 hours postoperatively. Methodology: A total of 60 patients were randomly assigned to the OFA Group, which received opioid-free anesthesia, and the OBA Group, which received Opioid-Based Anesthesia. The modified Mulimix technique was used in both groups. Serum samples were collected from all patients during skin incision and after the surgical procedure. Subsequently, these samples were assessed for IL-2 and IL-6 levels. The postoperative analgesic consumption was compared in both groups. Results: Regarding serum IL-2 and IL-6 levels in the two study groups, there was a statistically significant difference after the conclusion of surgery, and the skin incision was made. Regarding the initial rescue analgesia postoperatively assessment, the OBA group demonstrated a substantially greater overall consumption of analgesics within the first 24 h. The study revealed a significant difference in VAS values between the OBA Group and the OFA Group at 2 h, 4 h, and 6 h postoperatively. Conclusion: The modified mulimix technique effectively reduces postoperative plasma inflammatory mediators, interleukin-2 and interleukin-6, and results in decreased postoperative pain, thus reducing the postoperative analgesia consumption Abbreviations: OBA - Opioid based anesthesia; OFA - opioid-free anesthesia; IL-2 - interleukin-2; IL-6 - interleukin-6; VAS - visual analogue scale Keywords: Bariatric surgery, interleukin, Mulimix, opioid, pain, immunological response. Citation: Seyam SHA, Hassan AE, Elsayed MM. Assessing the impact of opioid-free anesthesia using the modified Mulimix technique on postoperative pain in bariatric surgery patients: a correlative randomized double-blinded trial. Anaesth. pain intensive care 2024;28(4):721−726; DOI: 10.35975/apic.v28i4.2516 Received: March 04, 2024; Reviewed: May 18, 2024; Accepted: May 19, 2024

Optimal approach to ultrasound-guided quadratus lumborum blocks for postoperative analgesia in elective caesarean section: protocol for systematic review and meta-analysis

IntroductionUltrasound-guided quadratus lumborum blocks are commonly used for postoperative analgesia during caesarean section. Ultrasound-guided quadratus lumborum blocks can be performed through four approaches, including lateral, posterior, anterior, and intramuscular quadratus...

The effect of perineural dexamethasone on nerve injury and recovery of nerve function after surgery: A randomized controlled trial

BackgroundWhile numerous studies have examined the influence of perineural dexamethasone on nerve block duration, its potential impact on postoperative nerve injury has not been adequately addressed. ObjectiveThis study aims to elucidate the effect of perineural dexamethasone on nerve injury and nerve function recovery after surgery. DesignA prospective randomized double-blinded trial. SettingThe First Affiliated Hospital of Chengdu Medical College, Chengdu, China. The study was conducted between 14 June and 30 December 2022. ParticipantsPatients aged 18 – 80 years, ASA I - II, scheduled for elective orthopedic or burn and plastic surgery. InterventionsPatients were randomized to receive either perineural dexamethasone (D group) or no dexamethasone (ND group). Main outcome measuresPrimary outcomes were the incidence and recovery of nerve injury. Secondary outcomes included postoperative pain scores, analgesic consumption, and adverse events. ResultsInitial postoperative nerve injury rates were similar between groups (D: 30.4 %, ND: 33.3 %, P > 0.05). At 12 weeks post-discharge, significantly more patients in the ND group recovered from nerve deficits (78.8 % vs 60.3 %; OR = 2.45, 95 % CI = 1.05 – 5.72, P < 0.05). No significant differences were observed in postoperative hyperglycemia or surgical site infection rates. ConclusionPerineural dexamethasone may impede nerve function recovery, suggesting caution in its use, particularly for patients with pre-existing nerve damage or diabetes. Further research is needed to elucidate the long-term effects of dexamethasone on nerve tissue recovery. Trial registrationchictr.org.cn, ChiCTR2200059424.

Opioid-free anaeshtesia in gynecology, future or a step back? –systematic review

Gynecological operations are surgical procedures involving the pelvic organs of a woman. They are divided into:laparoscopic, laparotomy and from vaginal access. The first two types are performed under general anesthesiawith opioids (Opioid Based Anasthesia, OBA). However, due to many side effects of opioids, non-opioid anesthesia(Opioid Free Anasthesia, OFA) has become more widely used. The following review focuses on the comparisonof postoperative pain, analgesic consumption, recovery quality, nausea and vomiting (PONV), hypotension andbradycardia between these two therapeutic approaches. The aim of this study is to perform comparative analysis ofthe effectiveness and side effects in gynecological surgeries using the OFA or OBA procedure. Review was performedwith MEDLINE, EMBASE, AMED databeses and the Cochrane Library, between September 2023 and December 2023.Randomised controlled trials (RCTs) comparing efficacy and side effects between OFA and OBA were included. Thereview comprised 498 patients from 6 RCTs. Common interventions included laparoscopic procedures. Evidence showsa reduction in side effects in OFA. PONV frequency was reduced in OFA (RR = 0.52; 95% CI: 0.29–0.93; p = 0.004;l2 = 67.5%). The score on the recovery quality questionnaire was also significantly higher (mean difference +28.36 points/200). The difference in pain, frequency of hypotension and bradycardia slightly favors OFA, but these changeswere not statistically significant. OFA procedure is not only an effective alternative to OBA in gynecological surgery, butalso improves the outcomes after it. Although, further research in this field is required.

A comparative study of respiratory effects of erector spinae plane block versus paravertebral plane block for women undergoing modified radical mastectomy

BackgroundInadequate acute postoperative pain control after modified radical mastectomy (MRM) can compromise pulmonary function. This work aimed to assess the postoperative pulmonary effects of a single-shot thoracic paravertebral block (TPVB) and erector spinae plane block (ESPB) in female patients undergoing MRM.MethodsThis prospective, randomized comparative trial was conducted on 40 female American Society of Anesthesiologists (ASA) II-III, aged 18 to 50 years undergoing MRM under general anesthesia (GA). Patients were divided into two equal groups (20 in each group): Group I received ESPB and Group II received TPVB. Each group received a single shot with 20 ml volume of 0.5% bupivacaine.ResultsRespiratory function tests showed a comparable decrease in forced vital capacity (FVC) and forced expiratory volume (FEV1) from the baseline in the two groups. Group I had a lower FEV1/FVC ratio than Group II after 6 h. Both groups were comparable regarding duration for the first postoperative analgesic request (P value = 0.088), comparable postoperative analgesic consumption (P value = 0.855), and stable hemodynamics with no reported side effects.ConclusionBoth ultrasound guided ESPB and TPVB appeared to be effective in preserving pulmonary function during the first 24 h after MRM. This is thought to be due to their pain-relieving effects, as evidenced by decreased postoperative analgesic consumption and prolonged time to postoperative analgesic request in both groups.ClinicalTrials.gov IDNCT03614091 registration date on 13/7/2018.

Pain management after thoracotomy with dexamethasone and bupivacaine through a peripleural cather: a randomized controlled trial

IntroductionThoracotomy procedures can result in significant pain and cause nausea/vomiting. Glucocorticoids have anti-emetic and analgesic effects due to their anti-inflammatory and nerve-blocking properties. This study investigates the additive effect of local dexamethasone with bupivacaine as sole analgesic medication through a peripleural catheter after thoracotomy.MethodThe study was conducted as a randomized control trial on 82 patients. Participants were allocated to receive either 2.5 mg/kg of bupivacaine plus 0.2 mg/kg of dexamethasone or 2.5 mg/kg of bupivacaine plus the same amount of normal saline as placebo through a 6 French peripleural catheter implemented above the parietal pleura and beneath the musculoskeletal structure of the chest wall. The primary outcome was the severity of pain 24 h after the operation in the visual analogue scale (VAS) score. Secondary outcomes were the incidence of nausea/vomiting, opioid consumption for pain control, and incidence of any adverse effects.Results: A total of 50 participants were randomized to each group, and the baseline characteristics were similar between the groups. Median of VAS score (6 (3-8) vs. 8 (6-9), p < 0.001), postoperative opioid consumption (9 (36%) vs. 17 (68%) patients, p=0.024), and median length of hospital stay (4 (3-8) vs. 6 (3-12) days, p < 0.001) were significantly lower in the dexamethasone group. However, postoperative nausea/vomiting (p=0.26 for nausea and p=0.71 for vomiting) and surgical site infection (p = 0.55) were similar between the two groups. ConclusionIn thoracotomy patients, administering local dexamethasone + bupivacaine through a peripleural catheter can reduce postoperative pain, analgesic consumption, and length of hospital stay.Trial RegistrationIranian Registry of Clinical Trials (IRCT20220309054226N1, registration date: 3/21/2022.

Comparison of Ultrasound Guided Quadratus Lamborum Plane Block versus Intraperitoneal and Port Sites Bupivacaine Infiltration in Post Operative Analgesia after Laparoscopic Cholecystectomy

Abstract Background Poorly controlled acute pain after abdominal surgery is associated with a variety of unwanted postoperative consequences, including patient suffering, distress, respiratory complications, delirium, myocardial ischemia, prolonged hospital stay and an increased likelihood of chronic pain. Aim of the Work The aim of this study is to assess the postoperative analgesic efficacy of quadratus lamborum plain block compared to intraperitoneal and periportal infiltration with bupivacaine after laparoscopic cholecystectomy regarding the pain relief, effect on hemodynamics, requirement of first supplemental doses of analgesia and total number of doses received. Patients and Methods The study was conducted on 70 randomly chosen patients aged 20 to 60 years, American Society of Anesthesiologists (ASA) class I or II scheduled for elective laparoscopic cholecystectomy in Ain Shams University Hospitals after approval of the medical ethical committee. They were allocated in two groups of 35 patients each: QL block Group, intraperitoneal and periportal infiltration Group: Results Patients receiving QL block had significantly lower pain scores at rest for 6 hrs and decrease total need of analgesic in first 24 h post operative compared with patients who received Intraperitoneal and port sites infiltration. Conclusion Quadratus Lumborum block was effective in reducing postoperative pain scores for 6 hours and lower total 24 hrs postoperative opioid and analgesic consumption after laparoscopic cholecystectomy under general anesthesia, compared to intraperitoneal and port sites infiltration. This technique can be a promising mode of postoperative analgesia where epidural catheter insertion is contraindicated.

A Comparative Study Between Ultrasound-Guided Ilioingunial/Iliohypogastric Nerve Block versus Transverse Abdominis Plane Block in Patients Undergoing Oblique Inguinal Hernia Repair

Abstract Background Poorly controlled acute pain after abdominal surgery is related to somatic pain signals derived from the abdominal wall and is associated with a variety of unwanted post-operative consequences, including patient suffering, distress, respiratory complications, delirium, myocardial ischemia and prolonged hospital stay. Objective Regional anesthesia by (Ultrasound guided (US) Transversus abdominis plane block (TAP) or Ultrasound guided ilioinguinal and iliohypogastric nerves (IIN+IHN) block may be used as components of multimodal anesthesia with a comparable effect. In the present study, Bupivacaine is used to compare between them following inguinal hernia repair. Patients and Methods The study was conducted on 60 randomly chosen patients aged above 18 years, American Society of Anesthesiologists (ASA) class I or II scheduled for elective unilateral open inguinal hernia repair under general anesthesia, in Ain Shams University Hospitals after approval of the medical ethical committee. They were allocated in two groups. TAP block Group: received general anesthesia and (0.2 mL/kg of 0.25% bupivacaine per side), by midaxillary approach, under ultrasound guidance, the probe was placed transversely between the iliac crest and costal margin. Ilioinguinal/ iliohypogastric nerves block group: received general anesthesia, with (0.2 mL/kg of 0.25% bupivacaine per side). The inferior portion of linear ultrasound transducer will be placed over the anterior superior iliac spine with the superior margin of the transducer pointed directly in an oblique plane toward the umbilicus. The superior margin of the ultrasound transducer was slowly rotated superiorly and inferiorly until the fascial plane between the internal oblique and transverse abdominis muscle is identified. Results The results of the study revealed that patients received IIN+IHN block had significantly lower pain scores at 8, 12, 16, 20, and 24 hrs after operation, delayed time for rescue analgesia and decreased total need of analgesic in the first 24hrs post-operative compared to patients who received TAP nerves block. Conclusion IIN+IHN block was effective in reducing postoperative pain scores for 4-6 hours, lowering total 24-h postoperative opioid and analgesic consumption and delaying the need for rescue analgesia after inguinal hernia repair under general anesthesia, compared to TAP nerves block. It will be more useful to study in high-risk hypertensive and cardiac patients and to correlate with plasma catecholamine levels, which reflect the stress response and it is necessary to evaluate postoperative pain on movement in farther studies.

I Pack Block versus Adductor Canal Block for Post-Operative Pain Management in Total Knee Arthroplasty

Abstract Background Total knee arthroplasty (TKA) is a highly distressful major surgery, with a significant potential for complications, not only because of the surgical and anesthetic impact of the procedure, but also because of the demographic and clinical characteristics of the target population. Careful pain management is necessary post-operative to achieve early post-operative mobilization while ensuring patient comfort throughout and preventing post-operative complications. Objective we aim to compare postoperative pain management and post- operative analgesic consumption between IPACK block and Adductor canal block in total knee arthroplasty cases. Methods After obtaining approval from the medical ethical committee in Ain Shams University, this Prospective randomized controlled double-blind clinical trial study was conducted in the operating theatres of Ain shams University Hospitals. Study period March 2022 to August 2022. Physical status: ASA 1 or 2 and candidates for spinal anaesthesia undergoing total knee arthroplasty. Age group: 40-65 years. Sample sizes of 30 patients in total; 15 in group I (group I) and 15 in group II (group A). Results As for the comparison between effect of IPACK block and Adductor canal block as regard post-operative pain in total knee arthroplasty, it showed that there is significance regarding the numeric version of the visual analogue scale (VAS) that was used to assess postoperative pain and its intensity with range 1-3 for Adductor canal block and 2-4 for IPACK block. Conclusion The comparison between effect of IPACK block and Adductor canal block as regard post-operative pain in total knee arthroplasty showed significant difference regarding the numeric version of the visual analogue scale (VAS) that was used to assess postoperative pain and its intensity with range 1-3 for Adductor canal block and 2-4 for IPACK block. These findings with our study primary and secondary outcomes showed that Adductor canal block has more analgesic effect with respect to IPACK block regarding pain assessment but with no significant difference regarding the by the time till first analgesia postoperative and Total analgesics consumption (in mg.) over 24-hour period post-operative.

Comparison of ultrasound-guided sacral erector spinae plane block and caudal epidural block for analgesia in paediatric patients undergoing hypospadias repair: A double-blind, randomised controlled trial.

Caudal block is more frequently used in children for postoperative analgesia. However, its disadvantage is its short duration. Erector spinae plane block (ESPB) at the sacral level can potentially block the pudendal nerve. It may prove an alternative to caudal block for hypospadias repair regarding time to first rescue analgesia. Fifty children of 2-7 years of age were included. After induction of general anaesthesia, Group I (n = 25) was given ultrasound-guided sacral ESPB with 1 ml/kg of 0.25% bupivacaine and Group II (n = 25) was given caudal block with 0.5 ml/kg of 0.25% bupivacaine. Postoperatively at face, leg, activity, cry, consolability (FLACC) score ≥4, rescue analgesia was given using intravenous 15 mg/kg paracetamol. The primary outcome was to compare time to first rescue analgesia, and secondary outcomes were intraoperative haemodynamic parameters, fentanyl consumption, postoperative FLACC score and analgesic consumption in 24 h. Continuous variables were compared using the independent sample t-test or Mann-Whitney test, and categorical variables were compared using the Chi-square test. The mean time to first rescue analgesia was 21.30 (standard deviation [SD]: 3.06) h in Group I and 9.36 (SD: 1.71) h in Group II (P < 0.001) (mean difference -11.94 [95% CI: -13.39, -10.48]). The FLACC score was significantly higher (P < 0.05) postoperatively at 8, 10, 12 and 18 h in Group II. Mean postoperative analgesic consumption was 310.5 (SD: 72.69) mg in Group I and 615.6 (SD: 137.51) mg in Group II (P < 0.001) (mean difference 30.5 [95% CI: 236.41, 373.78]). Sacral ESPB is better regarding time to first rescue analgesia than caudal block in paediatric patients undergoing hypospadias repair.

Evaluation of ultrasound-guided suprazygomatic maxillary nerve block in functional endoscopic sinus surgery for postoperative pain relief: A randomised controlled trial.

Postoperative pain can impede functional recovery and delay hospital discharge after functional endoscopic sinus surgery (FESS). The study aimed to assess the efficacy of ultrasound (USG)-guided suprazygomatic maxillary nerve block (SZMNB) for postoperative pain in FESS. Forty-eight adult patients between 18 and 65 years of age with American Society of Anesthesiologists physical status I and II and scheduled to undergo FESS were enroled in this randomised controlled study. Patients were randomly allocated to either receive USG-guided SZMNB with general anaesthesia (n = 24) or general anaesthesia alone (n = 24). The numerical rating scale (NRS) pain score in the immediate postoperative period was recorded as the primary outcome. A total of 24 h postoperative rescue analgesic consumption, surgeon satisfaction score, postoperative haemodynamics, and postoperative complications were noted as secondary outcomes. The median (interquartile range) of the NRS pain score in the immediate postoperative period was 0 (0-0.25)[95% confidence interval (CI): 0, 0.08] in the block group compared to 2 (1.75-3) [95% CI: 1.60, 2.40] in the control group, P < 0.001]. Pain scores were significantly reduced at all time intervals till 24 h after surgery (P < 0.001). None of the patients required rescue analgesia in the block group. In contrast, eight patients required diclofenac 75 mg intravenous as rescue analgesia within 1 h of surgery and ten patients within 1-6 h of surgery in the control group. Other secondary outcomes were comparable between groups (P > 0.05). The USG-guided SZMNB provides excellent postoperative analgesia for patients undergoing FESS without significant side effects.

The effects of smoking on pain scores, vital signs, and analgesic consumption in patients undergoing tympanomastoidectomy surgery.

In this study, we investigate the effects of smoking on pain scores, vital signs, and analgesic consumption in the intraoperative and postoperative period in patients undergoing tympanomastoidectomy surgery. A total of 100 patients with American Society of Anesthesiologists I-II status, aged 18-55 years, and who were planned to undergo tympanomastoidectomy surgery were divided into two groups: smokers (Group 1) and non-smokers (Group 2). The patients were compared for preoperative, intraoperative, and 24-hour postoperative carboxyhemoglobin, blood pressure, oxygen saturation, respiratory rate, heart rate, pain intensity and verbal numerical rating scales, the extent of patient-controlled tramadol dose, nausea, and vomiting. There were 50 individuals in each group. Postoperative analgesic consumption and pain scores were higher in Group 1, and the first postoperative pain was felt earlier. Furthermore, in Group 1, preoperative carboxyhemoglobin levels and postoperative nausea were statistically higher before, after, and at the tenth minute after induction, whereas oxygen saturation was lower. The two groups had no statistical difference regarding intraoperative and postoperative vital signs. Postoperative analgesic consumption was not affected by age or gender. Smoking changes postoperative pain management, especially for this kind of operation, and these patients feel more pain and need more postoperative analgesic doses. Therefore, effective postoperative pain control should take account of smoking behavior, and analgesic doses may need to be adjusted for patients who smoke.