scholarly journals Low-Dose Ketamine Infusion for Perioperative Pain Management in Patients Undergoing Laparoscopic Gastric Bypass: A Prospective Randomized Controlled Trial

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Mitchell T. Seman ◽  
Shawn H. Malan ◽  
Matthew R. Buras ◽  
Richard J. Butterfield ◽  
Kristi L. Harold ◽  
...  
Keyword(s):  
Gastric Bypass ◽  
Low Dose ◽  
Hospital Length ◽  
Opioid Consumption ◽  
Hospital Length Of Stay ◽  
Control Group ◽  
Ketamine Infusion ◽  
Pain Scores ◽  
Significant Difference ◽  
Adverse Respiratory Events

Introduction. Obesity is a common comorbidity seen in the perioperative setting and is associated with many diseases including cardiovascular disease and obstructive sleep apnea. Laparoscopic Roux-en-Y gastric bypass is the gold standard surgical treatment for patients whose weight is refractory to diet and exercise. Caring for these patients perioperatively presents unique challenges to anesthesiologists and is associated with an increased risk of adverse respiratory events. In our study, we hypothesize that a low-dose perioperative ketamine infusion will reduce opioid consumption and improve analgesia when compared to standard therapy. Methods. This is a single-center, prospective randomized controlled study enrolling 35 patients in total. Patients were randomized equally into the ketamine and control group. Preop, intraop, and postop management regimens were standardized. The ketamine group received a 0.3 mg/kg ideal body weight ketamine bolus after induction followed by a 0.2 mg/kg/hr ketamine infusion continued into the postop setting for up to 24 hours. Data collected included total perioperative opioids used converted to oral morphine equivalents (ME), pain scores, side effects, hospital length of stay, and patient satisfaction captured via postoperative questionnaires. Results. The use of perioperative opioid consumption was significantly lower in the ketamine group when compared with the control group (179.9 ME versus 248.7 ME, P = 0.03 ). There was no statistically significant difference in pain scores or hospital length of stay postoperatively between the two groups. There were also no reported adverse respiratory events, prolonged sedation, agitation, or other side effects reported in either group. The patient satisfaction questionnaires showed a significant difference with the ketamine group reporting lower maximum pain scores, a decrease in how pain limited activities of daily living once discharged, and increased hospital pain management satisfaction scores. Conclusions. Perioperative low-dose ketamine infusions significantly reduced opioid consumption in morbidly obese patients undergoing laparoscopic gastric bypass surgery.

scholarly journals Perioperative Intravenous Low-Dose Ketamine Infusion to Minimize Pain for Septorhinoplasty: A Prospective, Randomized, Double-Blind Study

2020 ◽  
pp. 014556132097486
Author(s):  
Irem Ates ◽  
Muhammed Enes Aydin ◽  
Erkan Cem Celik ◽  
Mustafa Sitki Gozeler ◽  
Ali Ahiskalioglu
Keyword(s):  
Side Effects ◽  
Low Dose ◽  
Blind Study ◽  
Control Group ◽  
Anesthesia Induction ◽  
Double Blind Study ◽  
Double Blind ◽  
Ketamine Infusion ◽  
Pain Scores ◽  
Significant Difference

Objectives: Studies investigating the effects of intravenous (IV) ketamine in pain management after septorhinoplasty is limited. This study aims to evaluate the efficacy of low-dose IV infusion of ketamine on pain scores. Methods: This randomized, prospective, double-blind study was conducted with 48 patients who underwent septorhinoplasty. Intravenous ketamine bolus (0.5 mg/kg) was administered to the ketamine group (group K, n = 24) at anesthesia induction, and ketamine infusion was continued (0.25 mg/kg/h) during the surgery. In the control group (group C, n = 24), the same protocol was administered using saline instead of ketamine. Furthermore, 50-mg dexketoprofen trometamol was administered to both groups 30 minutes before the end of the surgery. Then it was repeated at the 12th and 24th hours postoperatively. Pain scores were evaluated with the visual analogue scale. Consumptions intraoperative of opioid and sevoflurane, rescue opioid requirement, patient satisfaction, and side effects were recorded. Results: Pain scores were significantly lower in group K at all postoperative periods ( P < .05). There was no significant difference between the groups in terms of intraoperative sevoflurane and remifentanil consumptions ( P > .05). Rescue opioid analgesic requirements were significantly lower in group K than group C (0/24 vs 6/24, respectively; P  = .022). Side effects were similar between the groups ( P > .05). Conclusion: We recommend the administration of low-dose ketamine infusion during septorhinoplasty surgery because it reduces the requirement for rescue opioid analgesia and postoperative pain scores.

Effect of Adjunctive Dexmedetomidine in the Treatment of Alcohol Withdrawal Compared to Benzodiazepine Symptom-Triggered Therapy in Critically Ill Patients: The EvADE Study

2020 ◽  
pp. 089719002097775
Author(s):  
Tia E. Collier ◽  
Lane B. Farrell ◽  
Aaron D. Killian ◽  
Vivek K. Kataria
Keyword(s):  
Alcohol Withdrawal ◽  
Alcohol Withdrawal Syndrome ◽  
Study Groups ◽  
Hospital Length ◽  
Hospital Length Of Stay ◽  
Control Group ◽  
Physical Restraints ◽  
Significant Difference ◽  
Propensity Matching ◽  
New Onset

Objective: This study evaluated the safety and efficacy of adjunctive dexmedetomidine for alcohol withdrawal syndrome (AWS) treatment compared to symptom-triggered benzodiazepine therapy. Methods: This single-center, retrospective, cohort study evaluated patients admitted to an intensive care unit (ICU) with AWS. Patients were divided into 2 groups: adjunctive dexmedetomidine or symptom-triggered therapy (control). Primary outcome was change in Clinical Institute Withdrawal Assessment for Alcohol (CIWA-Ar) score. Secondary outcomes assessed cumulative ICU benzodiazepine requirement and ICU/hospital length of stay (LOS). Safety outcomes evaluated incidence of adverse events, new onset seizures, and intubation. Propensity matching was performed to minimize differences between study groups. Results: Overall, 147 patients were included, 56 in the dexmedetomidine group and 91 in the control group. Patient demographics were similar, however baseline CIWA-Ar score was statistically higher in the dexmedetomidine group. Following propensity matching, 55 patients were included in each group. No significant difference was noted for change in CIWA-Ar score (median, IQR) [3.8 (-0.4-12.3) dexmedetomidine vs. 5.4 (1.4-12.9) control, p = 0.223]. Secondary endpoints revealed increased benzodiazepine requirements (p = 0.001), prolonged ICU LOS (p = 0.050), and more frequent use of physical restraints (p = 0.001) in the dexmedetomidine group. While not statistically significant, the development of new onset seizures (p = 0.775) and intubation (p = 0.294) occurred more frequently in the dexmedetomidine group. Conclusion: The addition of dexmedetomidine to symptom-triggered benzodiazepines for AWS did not produce a significant change in CIWA-Ar scores from baseline compared to symptom-triggered therapy alone. The increased rate of new onset seizures and intubation warrant further investigation into the safety of dexmedetomidine in AWS.

scholarly journals Continuous Intra-articular Analgesic Injection Versus Continuous Adductor Canal Block in Postoperative Total Knee Arthroplasty

2020 ◽  
Vol 8 (5_suppl5) ◽  
pp. 2325967120S0006
Author(s):  
Kadchan Limtharapond ◽  
AVM Chumroonkiat Leelasestaporn
Keyword(s):  
Pain Scale ◽  
Hospital Length ◽  
Opioid Consumption ◽  
Hospital Length Of Stay ◽  
Adductor Canal Block ◽  
Adductor Canal ◽  
Ambulatory Ability ◽  
Significant Difference ◽  
A New Technique ◽  
6 Minute Walk Test

Continuous adductor canal block (CACB) provides effective analgesia after TKA but this technique requires skill of anesthesiologists and equipment such as ultrasonography. A new technique, continuous intra-articular analgesia injection (CIA) is developed recently and found good results. However, effectiveness of these two techniques after TKA is not established. Purposes: We determined whether, after TKA, patients with CIA versus patients with CACB demonstrated (1) decreased pain scores (2) greater ambulatory ability postoperatively (3) decreased daily opioid consumption and hospital length of stay Methods: Between October 2016 and October 2018, 50 patients underwent unilateral TKA at our practice site, whom 50% (n = 25) had CACBs and the others had CIAs. The results were collected in postoperative day (POD) 1,2 and 3. Results: The results were analyzed by SPSS V18 and used student T-test for measurement of mean visual analog pain scale, time up-and-go test, 6-minute walk test and daily total opioid consumption and knee society score. All results show no statistical significant difference between two groups. Conclusion: This study shows continuous intra-articular injection in postoperative TKA is as effective as continuous adductor canal block. It can be used as alternative in postoperative TKA.

scholarly journals Preoperative Dexamethasone Enhances Quality of Recovery after Laparoscopic Cholecystectomy

2011 ◽  
Vol 114 (4) ◽  
pp. 882-890 ◽  
Author(s):  
Glenn S. Murphy ◽  
Joseph W. Szokol ◽  
Steven B. Greenberg ◽  
Michael J. Avram ◽  
Jeffery S. Vender ◽  
...  
Keyword(s):  
Laparoscopic Cholecystectomy ◽  
Length Of Stay ◽  
Hospital Length ◽  
Hospital Length Of Stay ◽  
Postanesthesia Care Unit ◽  
Control Group ◽  
Quality Of Recovery ◽  
Pain Scores ◽  
Dexamethasone Group

Background The effect of dexamethasone on quality of recovery after discharge from the hospital after laparoscopic surgery has not been examined rigorously in previous investigations. We hypothesized that preoperative dexamethasone would enhance patient-perceived quality of recovery on postoperative day 1 in subjects undergoing laparoscopic cholecystectomy. Methods One hundred twenty patients undergoing outpatient laparoscopic cholecystectomy were randomized to receive either dexamethasone (8 mg) or placebo-saline. A 40-item quality-of-recovery scoring system (QoR-40) was administered preoperatively and on postoperative day 1 to all subjects. Nausea, vomiting, fatigue, and pain scores were recorded at the time of discharge from the postanesthesia care unit and ambulatory surgical unit. Hospital length of stay was also assessed. Results Global QoR-40 scores on postoperative day 1 were higher in the dexamethasone group (median [range], 178 [130-195]) compared with the control group (161 [113-194]) (median difference [99% CI], -18 [-26 to -8]; P &lt; 0.0001). Postoperative QoR-40 scores in the dimensions of emotional state, physical comfort, and pain were all improved in the dexamethasone group compared with the control group (P &lt; 0.001). Nausea, fatigue, and pain scores were all reduced in the dexamethasone group during the hospitalization, as were postoperative analgesic requirements (P &lt; 0.05). Total hospital length of stay was also reduced in subjects administered steroids (P = 0.003). Conclusions Among patients undergoing outpatient laparoscopic cholecystectomy surgery, the use of preoperative dexamethasone enhanced postdischarge quality of recovery and reduced nausea, pain, and fatigue in the early postoperative period.

scholarly journals Delayed cervical palsy following cervical spine fusion leads to an increase in hospital-related costs

2015 ◽  
Vol 22 (1) ◽  
pp. 11-14 ◽  
Author(s):  
Ross C. Puffer ◽  
William E. Clifton ◽  
Grant W. Mallory ◽  
Michelle J. Clarke
Keyword(s):  
Cervical Spine ◽  
Hospital Cost ◽  
Hospital Length ◽  
Spine Fusion ◽  
Cost Data ◽  
Hospital Length Of Stay ◽  
Control Group ◽  
Cervical Spine Surgery ◽  
Significant Difference ◽  
Cervical Spine Fusion

OBJECT Delayed cervical palsy (DCP) is a known complication following cervical spine surgery. While most DCPs eventually improve, they can result in significant temporary disability. Postoperative complications affect hospital length of stay (LOS) as well as overall hospital cost. The authors sought to determine the hospital cost of DCP after cervical spine fusion operations. METHODS A retrospective review of patients undergoing cervical fusion for degenerative disease at the Mayo Clinic from 2008 to 2012 was performed. Patients who developed DCPs not attributable to intraoperative trauma were included. All nonoperative-related costs were compared with similar costs in a control group matched according to age, sex, and surgical approach. All costs and services were reflective of the standard costs for the current year. Raw cost data were presented using ratios due to institutional policy against publishing cost data. RESULTS There were 27 patients (18 men, 9 women) who underwent fusion and developed a DCP over the study period. These patients were compared with 24 controls (15 men, 9 women) undergoing fusion in the same time period. There was no difference between patients and controls in mean age (62.4 ± 3.1 years vs 63.8 ± 2.5 years, respectively; p = 0.74), LOS (4.2 ± 3.3 days vs 3.8 ± 4.5 days, respectively; p = 0.43), or operating room–related costs (1.08 ± 0.09 vs 1.0 ± 0.07, respectively; p = 0.58). There was a significant difference in nonoperative hospital-related costs between patients and controls (1.67 ± 0.15 vs 1.0 ± 0.09, respectively; p = 0.04). There was a significantly higher utilization of postoperative imaging (CT or MRI) in the DCP group (14/27, 52%) when compared with the matched cohort (4/24, 17%; p = 0.018), and a significantly higher utilization of physiatry services (24/27 [89%] vs 15/24 [63%], respectively; p = 0.046). CONCLUSIONS While DCPs did not significantly prolong the length of hospitalization, they did increase hospital-related costs. This method could be further extrapolated to model costs of other complications as well.

Transmuscular quadratus lumborum block reduces opioid consumption and prolongs time to first opioid demand after laparoscopic nephrectomy

2020 ◽  
Vol 46 (1) ◽  
pp. 18-24
Author(s):  
Mette Dam ◽  
Christian Hansen ◽  
Troels Dirch Poulsen ◽  
Nessn Htum Azawi ◽  
Gunnar Hellmund Laier ◽  
...  
Keyword(s):  
Intervention Group ◽  
Oral Morphine ◽  
Analgesic Efficacy ◽  
Multimodal Analgesia ◽  
Opioid Consumption ◽  
Laparoscopic Nephrectomy ◽  
Hospital Length Of Stay ◽  
Control Group ◽  
Pain Scores ◽  
Quadratus Lumborum

BackgroundRobotic and hand-assisted laparoscopic nephrectomies are often associated with moderate to severe postoperative pain. The aim of the current study was to investigate the analgesic efficacy of the transmuscular quadratus lumborum (TQL) block for patients undergoing robotic or hand-assisted laparoscopic nephrectomy.MethodsFifty patients were included in this single-center study. All patients were scheduled for elective hand-assisted or robotic laparoscopic nephrectomy under general anesthesia. Preoperatively, patients were randomly allocated to TQL block bilaterally with ropivacaine 60 mL 0.375% or 60 mL saline and all patients received standard multimodal analgesia and intravenous patient-controlled analgesia. Primary outcome was postoperative oral morphine equivalent (OME) consumption 0–12 hours. Secondary outcomes were postoperative OME consumption up to 24 hours, pain scores, time to first opioid, nausea/vomiting, time to first ambulation and hospital length of stay (LOS).ResultsMean (95% CI) OME consumption was significantly lower in the intervention group at 12 hours after surgery 50 (28.5 to 71.5) mg versus control 87.5 (62.7 to 112.3) mg, p=0.02. At 24 hours, 69.4 (43.2 to 95.5) mg versus 127 (96.7 to 158.6) mg, p<0.01. Time to first opioid was significantly prolonged in the intervention group median (IQR) 4.4 (2.8–17.6) hours compared with 0.3 (0.1–1.0) hours in the control group, p<0.001. No significant intergroup differences were recorded for time to first ambulation, pain scores, nausea/vomiting nor for LOS.ConclusionPreoperative bilateral TQL block significantly reduced postoperative opioid consumption by 43% and significantly prolonged time to first opioid.Trial registration numberNCT03571490.

scholarly journals The Effect of Ultrasound Guided Superficial Cervical Plexus Block on Postoperative Opioid Consumption in Patients Undergoing Anterior Cervical Discectomy and Fusion Surgery: A Prospective, Randomized Controlled Study

2021 ◽  
Author(s):  
İrem Ateş ◽  
Erkan Cem Çelik ◽  
Ufuk DEmir ◽  
Muhammed Enes Aydın ◽  
Ali Ahiskalıoğlu
Keyword(s):  
Opioid Consumption ◽  
Anterior Cervical Discectomy ◽  
Controlled Study ◽  
Control Group ◽  
Ultrasound Guided ◽  
Rescue Analgesia ◽  
Cervical Discectomy ◽  
Pain Scores ◽  
Significant Difference ◽  
Vas Scores

INTRODUCTION: Anterior cervical discectomy and fusion (ACDF) surgery is a procedure that can cause moderate pain in the postoperative period. Superficial cervical block (SCB) is a regional anesthesia technique that can provide analgesia during and after surgery. The aim of this study is to investigate the effect of ultrasound-guided SCB block on pain scores and postoperative opioid consumption in patients undergoing ACDF surgery. METHODS: 48 patients planned to undergo single or two levels of ACDF surgery were randomly divided into two groups, SCB and Control (C). Ultrasonography (USG) guided SCB was performed in the SCB group (n=24) with 10 mL of 0.25% bupivacaine. No attempt was made to the control group (n=24) before the operation. Intravenous 50 mg dexketoprofen was administered to both groups half an hour before the end of the operation and at the 12th hour postoperatively. Patient controlled analgesia (PCA) device containing fentanyl was initiated. Postoperative visual analog scale (VAS) scores, opioid consumption, need for rescue analgesia and side effects were recorded. RESULTS: There was no statistically significant difference between the groups in terms of demographic data, anesthesia and surgery times. Compared to the control group, VAS scores were statistically low at all measurement times in the SCB group (p <0.05). The 24-hour total opioid consumption was statistically significantly higher in the control group than in the SCB group (375.83±235.96 µg vs. 112.50±102.41 µg, respectively p<0.001). The need of rescue analgesia was statistically higher in the control group than the SCB group (12/24 vs. 0/24, respectively, p <0.001). DISCUSSION AND CONCLUSION: We believe that USG-guided SCB can be an effective component of the multimodal analgesia protocol by reducing opioid consumption and pain scores in patients undergoing ACDF surgery.

Intraoperative Methadone Reduces Postoperative Opioid Requirements in Nuss Procedure for Pectus Excavatum

2021 ◽  
pp. 000313482110540
Author(s):  
Nadia M. Froehling ◽  
James A. Martin ◽  
M. Victoria P. Miles ◽  
Andrew W. Wilson ◽  
Brynn Byers ◽  
...  
Keyword(s):  
Postoperative Pain ◽  
Retrospective Cohort ◽  
Pectus Excavatum ◽  
Chart Review ◽  
Hospital Length ◽  
Solid Food ◽  
Hospital Length Of Stay ◽  
Nuss Procedure ◽  
Pain Scores ◽  
Significant Difference

Introduction Surgical correction of pectus excavatum by Nuss procedure, commonly referred to as minimally invasive repair of pectus excavatum (MIRPE), often results in significant postoperative pain. This study investigated whether adding intraoperative methadone would reduce the postoperative opioid requirement during admission for patients undergoing MIRPE. Methods A retrospective cohort chart review was conducted for 40 MIRPE patients between 2018 and 2020. Patients were stratified into 2 groups: those who received multimodal anesthesia (MM, n = 20) and those who received multimodal anesthesia with the addition of intraoperative methadone (MM + M, n = 20). Data collected included total opioid consumption during hospital stay (morphine milligram equivalents [MMEs]), hospital length of stay (LOS), pain scores, time to ambulation, and time to tolerating solid food. Results Addition of intraoperative methadone for patients undergoing MIRPE significantly reduced postoperative opioid requirements (MME/kg) during admission ( P = .007). On average, patients in the MM group received 1.61 ± .55 MME/kg while patients in the MM + M group received 1.16 ± .44 MME/kg. Hospital opioid (non-methadone) total was also significantly reduced between the MM (1.87 ± .54) and MM + M group (1.37 ± .46), P = .003. There was no significant difference in hospital opioid total MME/kg administered between the groups. There were no significant differences observed in hospital LOS, pain scores, time to ambulation, or time to toleration of solid food. Discussion Incorporating intraoperative methadone for patients undergoing MIRPE reduced postoperative opioid requirements and hospital opioid (non-methadone) totals without a significant change in pain scores. Patients undergoing the Nuss procedure may benefit from the administration of intraoperative methadone.

Enhanced Recovery after Surgery for Cesarean Delivery Decreases Length of Hospital Stay and Opioid Consumption: A Quality Improvement Initiative

2020 ◽  
Author(s):  
Julia K. Shinnick ◽  
Merima Ruhotina ◽  
Phinnara Has ◽  
Bridget J. Kelly ◽  
E. Christine Brousseau ◽  
...  
Keyword(s):  
Length Of Stay ◽  
Cesarean Delivery ◽  
Enhanced Recovery ◽  
Length Of Hospital Stay ◽  
Hospital Length ◽  
Opioid Consumption ◽  
Hospital Length Of Stay ◽  
Pain Scores ◽  
Cesarean Deliveries ◽  
Eras Protocol

Objective The aim of this study is to assess the effect of a resident-led enhanced recovery after surgery (ERAS) protocol for scheduled prelabor cesarean deliveries on hospital length of stay and postpartum opioid consumption. Study Design This retrospective cohort study included patients who underwent scheduled prelabor cesarean deliveries before and after implementation of an ERAS protocol at a single academic tertiary care institution. The primary outcome was length of stay following cesarean delivery. Secondary outcomes included protocol adherence, inpatient opioid consumption, and patient-centered outcomes. The protocol included multimodal analgesia and antiemetic medications, expedited urinary catheter removal, early discontinuation of maintenance intravenous fluids, and early ambulation. Results A total of 250 patients were included in the study: 122 in the pre-ERAS cohort and 128 in the post-ERAS cohort. There were no differences in baseline demographics, medical comorbidities, or cesarean delivery characteristics between the two groups. Following protocol implementation, hospital length of stay decreased by an average of 7.9 hours (pre-ERAS 82.1 vs. post-ERAS 74.2, p < 0.001). There was 89.8% adherence to the entire protocol as written. Opioid consumption decreased by an average of 36.5 mg of oxycodone per patient, with no significant differences in pain scores from postoperative day 1 to postoperative day 4 (all p > 0.05). Conclusion A resident-driven quality improvement project was associated with decreased length of hospital stay, decreased opioid consumption, and unchanged visual analog pain scores at the time of hospital discharge. Implementation of this ERAS protocol is feasible and effective. Key Points

scholarly journals EFFICACY OF QUADRATUS LUMBORUM BLOCKS IN ROBOTIC NEPHRECTOMY- A RETROSPECTIVE REVIEW.

2021 ◽  
Author(s):  
Poonam Pai B.H ◽  
Yan H. Lai ◽  
Abimbola Onayemi ◽  
Hung-Mo Lin
Keyword(s):  
Enhanced Recovery ◽  
Opioid Consumption ◽  
Laparoscopic Nephrectomy ◽  
Control Group ◽  
Pain Scores ◽  
Quadratus Lumborum Block ◽  
Quadratus Lumborum ◽  
Significant Difference ◽  
Enhanced Recovery Pathways ◽  
Recovery Pathways

Abstract Abstract: With the implementation of enhanced recovery pathways (ERAS) in kidney surgeries, regional techniques are being considered an important aspect of multimodal analgesia. Abdominal blocks such as quadratus lumborum block (QLB) have been used as an effective analgesic in abdominal surgeries, however their efficacy in kidney surgery remains unknown. To our best knowledge, there are no clinical studies exploring the relationship between QLBs and post-operative opioid consumption in robotic laparoscopic nephrectomy. Study Objectives: Assess analgesic efficacy between QLB and post-operative opioid consumption in robotic laparoscopic nephrectomy. Design and Setting: A retrospective chart review was conducted by querying the electronic medical record system of 2,200 bed tertiary academic hospital center in New York City. Outcomes: The primary measured outcome was postoperative morphine milli equivalent (MME) consumption for the first 24 hours. Secondary outcomes include intra-operative MME, as well as postoperative pain scores measured on a visual analogue scale (VAS) scale at 2, 6, 12, 18, and 24 hours post-operatively. Results: The mean total post-operative MME in the pQLB group was 11 [4, 18] and 15 [5.6, 28] in the control group (p =.001). There was a significant reduction in intra-operative MME in the QLB group in comparison to the control group. This reduction was not seen in post-operative MME. There was no significant difference in pain scores at any of the measured time points up to 24 hours post-operatively. Conclusion: Our study provides compelling support that ultrasound guided QLB significantly decreased intra operative opioid requirements but did not have the same effect on postoperative opioid requirements following robotic kidney surgeries in the context of an ERAS pathway. Keywords: Kidney surgeries, Robotic laparoscopic nephrectomy, quadratus lumborum block (QLB), enhanced recovery pathways (ERAS)

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