Epidural analgesia is superior to local infiltration analgesia in children with cerebral palsy undergoing unilateral hip reconstruction

Ultrasound estimates of the epidural depth in the paramedian sagittal oblique and transverse median planes: the correlation between estimated and actual depth to the epidural space in children with scoliosis

INTRODUCTION

The present study aimed to compare the correlation and agreement of epidural depth estimation using ultrasound in the paramedian sagittal oblique (PSO) versus the transverse median (TM) plane relative to the actual epidural depth observed during midline epidural punctures in children with scoliosis.

METHODS

In this prospective observational study, we enrolled 55 children aged 3-14 years with thoracolumbar scoliosis (Cobb angle >10°) requesting postoperative epidural analgesia. Ultrasound imaging was performed to estimate the distance from the skin to the epidural space in the bilateral PSO and TM planes. An anesthesiologist performed midline epidural puncture and measured the actual epidural depth from the skin to the epidural space. The correlation and degree of agreement between the ultrasound-estimated and actual epidural depths were investigated using Pearson's and concordance correlation coefficients. The image quality of the ligamentum flavum and posterior dura mater was compared.

RESULTS

In the PSO view, where the larger of the two measurements from both sides was used, both Pearson's and concordance correlation coefficients for comparing the actual epidural and ultrasound-estimated depths were significantly higher than those in the TM view (0.964 vs 0.930, p value=0.002; 0.952 vs 0.892, p value=0.004, respectively). The ligamentum flavum-posterior dura mater unit was more easily distinguished in the PSO view than in the TM view (72.7% vs 38.2%, p value<0.001).

CONCLUSIONS

The PSO view can be a reliable guide to facilitate epidural puncture in children with scoliosis with better visualization.

TRIAL REGISTRATION NUMBER

NCT04877964.

Bony hip reconstruction for displaced hips in patients with cerebral palsy: Is postoperative immobilization indicated?

Purpose

Decisions for postoperative immobilization after bony hip reconstructive surgery in cerebral palsy are controversial in current practice. The aim of this study was to check if choosing not to use any kind of postoperative immobilization is a safe practice.

Methods

A retrospective cohort study was conducted in a pediatric orthopedic tertiary referral center. The study included 148 patients (228 hips) with cerebral palsy, who had bony hip surgery. Medical records were reviewed for incidence of complications, methods of pain control, and length of hospital stay. Three radiographic measures (neck-shaft angle, Reimers migration index, and acetabular index) were performed on preoperative and postoperative X-rays. X-rays were also checked for mechanical failure of implant, recurrent dislocation/subluxation, and fractures in the first 6 months postoperatively.

Results

In total, 94 (64%) were male and 54 (36%) were female. Seventy-seven (52%) were Gross Motor Function Classification System V, mean age at surgery was 8.6 years (2.5-18.4 years). Length of hospital stay was 6.25 days (SD 4.64 days). Medical complications that may have prolonged hospital stay occurred in 41 patients (27.7%). Radiological measurements showed significant improvement postoperatively (p = 0.001). Seven patients (4.7%) had another surgery in first 6 months (three for recurrent dislocation/subluxation, three for implant failure, and one for ipsilateral femur fracture).

Conclusion

Avoiding postoperative immobilization following bony hip surgery in cerebral palsy is a safe practice and associated with reduced rate of medical and mechanical problems compared to the current literature. This approach should be utilized with optimal pain and tone management.

Use of Epidural Analgesia in Children With Neuromuscular Conditions Following Hip Reconstruction

BACKGROUND

Neuromuscular conditions, such as cerebral palsy, are the most common motor disabilities in the pediatric population. Children with these conditions frequently have accompanying hip deformities that require pelvic and femur osteotomy to correct the spastic hip dislocations. However, postoperative pain management remains an elusive and challenging problem. The purpose of this study was to determine whether postoperative use of epidural analgesia in patients with neuromuscular conditions provided similar outcomes with regard to pain scores, length of stay, duration of foley placement, duration of pain control, and complications as compared to traditional pain management regimens. To our knowledge, this is the first study comparing the use of epidural analgesia to conventional pain relief modalities following hip reconstruction in patients with neuromuscular conditions.

METHODS

A retrospective cohort study was performed using records of pediatric patients with neuromuscular conditions treated at our tertiary care center between January 2009 and December 2019. Patients with neuromuscular conditions treated with epidural or non-epidural analgesia for pain relief following unilateral or bilateral proximal femoral osteotomies, pelvic osteotomies, or open hip reduction were eligible for study inclusion. Multiple linear regression was used to determine differences in length of stay, pain score, pain modality, duration of Foley placement, and complications between the two cohorts.

RESULTS

Seventy patients met the inclusion criteria for the study. In all, 58 patients underwent unilateral procedures, of which 30 (52%) received epidural analgesia, and 28 (48%) received non-epidural pain control modalities. Demographic and baseline characteristics were similar among the cohort, except for BMI, which varied slightly. Average pain scores and pain control duration were not statistically different between the pain control modalities. After controlling for demographics, procedure, and immobilization type, the epidural group experienced significantly increased length of stay (+3.18 days, P=0.032) and duration of Foley placement (+1.04 days, P=.013). Complication rates between the two groups were not statistically significant.

CONCLUSIONS

The use of epidural analgesia in children with neuromuscular conditions was associated with comparable pain scores, despite the increased length of stay and duration of Foley placement. No statistically significant difference in complication rates was observed between patients receiving epidural anesthesia and those receiving traditional pain modalities.

Mode of Anesthesia and Bladder Management Following Orthopaedic Surgery in Children With Cerebral Palsy: A System Level Analysis

BACKGROUND

Postoperative urinary retention (POUR) is a surgical complication more prevalent in children with neurodisability and associated with an increase length of hospitalization. Risk factors include pre-existing bladder dysfunction, type and duration of surgery, anesthesia medications, postoperative opioid pain management, and patient demographics. The purpose of this investigation was (1) to determine the frequency of POUR following hip/lower limb orthopaedic procedures in which epidural analgesia was used for pain management; (2) to explore factors influencing postoperative bladder management.

METHODS

A retrospective analysis of clinical data was performed in an orthopaedic specialty care health care system. A health outcomes network was queried for patients with a diagnoses of cerebral palsy (ICD-9/10 codes) who had one of 57 unique CPT procedure codes corresponding to hip osteotomies or tenotomies from 2011 to 2019. All surgical observations included in analysis required a discrete data element and the confirmation of a secondary proxy. The database was also queried for postoperative medications received and patient demographics of interest.

RESULTS

A total of 704 surgical procedures met inclusion criteria resulting in a patient population with a mean age of 11 years, 58% male, 53% Caucasian, and 55% classified as quadriplegia [51% Gross Motor Function Classification System (GMFCS) levels IV/V]. Three hundred and thirty-five procedures (48%) involved epidural anesthesia. Sixty-five patients required intermittent catheterization (9.2%) postoperatively following foley catheter removal, of which 23 (3.3%) required recatheterization. The rate of recatheterization was similar regardless of anesthesia mode; 1.8% for general and 1.4% for epidural and was associated with a greater number of pain medications. Epidural anesthesia resulted in significantly longer periods of catheterization. For the total group the time to urinary catheter removal differed significantly among cerebral palsy subtypes, GMFCS Level, race, and ethnicity. Factors identified as significant predictors of the length of catheterization were epidural analgesia, number of pain medications, and osteotomy.

CONCLUSIONS

The number of postoperative pain medications utilized was more predictive of POUR than the mode of analgesia delivery; however, epidural analgesia and the type of surgical procedure did significantly impact the length of catheterization.

LEVEL OF EVIDENCE

Level III.

Classification of pain in children with cerebral palsy

Pain in patients with cerebral palsy (CP) is a major health issue strongly associated with reduced quality of life. In this study, we provide an overview of pain conditions in children with CP using the International Classification of Diseases, 11th Revision (ICD-11), which has been updated with a classification of chronic pain. Common causes of pain in children with CP, including hip displacement, muscle spasms, and procedures, are discussed; less studied pain types including headaches, neuropathic pain, visceral pain, and acute versus chronic pain are also highlighted. The addition of chronic pain to the ICD-11 is an important step forward in optimizing both the registration and assessment of pain conditions. However, a tool designed specifically for the different types of pain in patients with CP is imperative. In this paper, we propose a Cerebral Palsy Pain Classification that is aligned with the underlying mechanisms of pain and the ICD-11 pain classification.

Epidural Analgesia Versus Lumbar Plexus Blockade After Hip Reconstruction Surgery in Children With Cerebral Palsy and Intrathecal Baclofen Pumps: A Comparison of Safety and Efficacy

BACKGROUND

Epidural analgesia is commonly used for pain control after reconstructive hip surgery, but its use is controversial in the presence of an intrathecal baclofen pump (ITB). The purpose of this retrospective study was to investigate the rate of serious anesthetic and postoperative complications as well as the efficacy of epidural analgesia compared with lumbar plexus blocks (LPBs) for pain management after neuromuscular hip reconstruction in children with cerebral palsy (CP) and ITB.

METHODS

Pediatric patients with CP and ITB undergoing hip reconstructive surgery from 2010 to 2019 were retrospectively identified. Patients receiving epidural analgesia were compared with those receiving LPB. Morphine milligram equivalents per kilogram were used as a surrogate measure for pain-related outcomes, as pain scores were reported with wide ranges (eg, 0 to 5/10), making it unfeasible to compare them across the cohort. Postoperative complications were graded using the modified Clavien-Dindo classification.

RESULTS

Forty-four patients (26/44, 59% male) underwent surgery at an average age of 10.3 years (SD=3.4 y, range: 4 to 17 y). The majority utilized LPB (28/44, 64%) while the remaining utilized epidural (16/44, 36%). There were no differences in rates of serious complications, including no cases of ITB malfunction, damage, or infection. During the immediate postoperative course, patients who received LPB had higher morphine milligram equivalents per kilogram requirements than patients who received epidural analgesia.

CONCLUSIONS

In patients with CP undergoing hip reconstruction surgery with an ITB in situ, epidural anesthesia was associated with improved analgesia compared with LPB analgesia, with a similar risk for adverse outcomes. Epidural catheters placed using image-guided insertion techniques can avoid damage to the ITB catheter while providing effective postoperative pain control without increasing rates of complications in this complex patient population.

LEVEL OF EVIDENCE

Level III.

Tranexamic acid use decreases transfusion rate in children with cerebral palsy undergoing proximal femoral varus derotational osteotomy

ABSTRACT

Previous studies demonstrated the safety of tranexamic acid (TXA) use in cerebral palsy (CP) patients undergoing proximal femoral varus derotational osteotomy (VDRO), but were underpowered to determine if TXA alters transfusion rates or estimated blood loss (EBL). The purpose of this study was to investigate if intraoperative TXA administration alters transfusion rates or EBL in patients with CP undergoing VDRO surgery.We conducted a retrospective review of 390 patients with CP who underwent VDRO surgery between January 2004 and August 2019 at a single institution. Patients without sufficient clinical data and patients with preexisting bleeding or coagulation disorders were excluded. Patients were divided into 2 groups: those who received intraoperative TXA and those who did not.Out of 390 patients (mean age 9.4 ± 3.8 years), 80 received intravenous TXA (TXA group) and 310 did not (No-TXA group). There was no difference in mean weight at surgery (P = .25), Gross Motor Function Classification System level (P = .99), American Society of Anesthesiologist classification (P = .50), preoperative feeding status (P = .16), operative time (P = .91), or number of procedures performed (P = .12) between the groups. The overall transfusion rate was lower in the TXA group (13.8%; 11/80) than the No-TXA group (25.2%; 78/310) (P = .04), as was the postoperative transfusion rate (7.5%; 6/80 in the TXA group vs 18.4%; 57/310 in the No-TXA group) (P = .02). The intraoperative transfusion rate was similar for the 2 groups (TXA: 7.5%; 6/80 vs No-TXA: 10.3%; 32/310; P = .53). The EBL was slightly lower in the TXA group, although this was not significant (TXA: 142.9 ± 113.1 mL vs No-TXA: 177.4 ± 169.1 mL; P = .09). The standard deviation for EBL was greater in the No-TXA group due to more high EBL outliers. The percentage of blood loss based on weight was similar between the groups (TXA: 9.2% vs No-TXA: 10.1%; P = .40). The number needed to treat (NNT) with TXA to avoid one peri-operative blood transfusion in this series was 9.The use of intraoperative TXA in patients with CP undergoing VDRO surgery lowers overall and postoperative transfusion rates.Level of evidence: III, Retrospective Comparative Study.

Neuraxial anesthesia for post-operative pain control after hip surgery in children with cerebral palsy and pre-existing intrathecal baclofen pumps

PURPOSE

The purpose of this study is to describe the efficacy and adverse events of neuraxial anesthesia for post-operative pain control in non-ambulatory children with cerebral palsy with pre-existing intrathecal baclofen (ITB) pumps undergoing hip reconstructive or palliative surgery.

METHODS

Twelve children (mean age 11.25 years) were included in the study with the following neuraxial anesthesia methods: indwelling epidural catheter (8 patients), neuraxial opioids administered through the side port of the ITB pump (3 patients), and single injection spinal anesthetic (1 patient). Observational pain scores and opioid requirements were quantified for all patients.

RESULTS

There were no ITB pump or surgical complications at a mean follow-up of 2.2 years. The average length of stay was 6 days. Patients had good post-operative pain control with a mean observational pain score of 0.7 and mean morphine equivalent use of 0.26mg/kg/day. Four patients required anti-emetics to control nausea and three patients had urinary retention requiring repeat catheterization, but all medical complications resolved prior to discharge.

CONCLUSION

Neuraxial anesthesia can effectively control post-operative pain in children with a pre-existing ITB pump. Utilizing the side port of the ITB pump for administration of neuraxial opioids is an option when epidural or spinal anesthesia is not possible.

Subcutaneous Bupivacaine Infiltration Is Not Effective to Support Control of Postoperative Pain in Paediatric Patients Undergoing Spinal Surgery

Spinal deformity corrections in paediatric patients are long-lasting procedures involving damage to many tissues and long pain exposure; therefore, effective pain management after surgical treatment is an important issue. In this study, the effect of inclusion of local infiltration analgesia, as an integral part of the scheme in postoperative pain control, in children and adolescents, subjected to the spinal deformity correction procedure, was assessed. Thirty patients, aged 8 to 17 years, undergoing spinal deformity correction were divided into a study group, receiving a 0.25% bupivacaine solution before wound closure, and a control group (no local analgesic agent). Morphine, at the doses of 0.10 mg/kg of body weight, was administered to the patients when pain occurred. Pain scores, morphine administration, and bleeding were observed during 48 postoperative hours. The pain scores were slightly lower in a 0–4 h period in patients who received bupivacaine compared with those in the control group. However, no differences were observed in a longer period of time and in the total opioid consumption. Moreover, increasing bleeding was observed in the bupivacaine-treated patients (study group) vs. the control. Bupivacaine only modestly affects analgesia and, due to the increased bleeding observed, it should not to be part of pain control management in young patients after spinal deformity correction.

Regional anesthesia in pediatric patients with preexisting neurological disease

Preexisting neurological disease in pediatric patients presents unique challenges to the anesthesiologist. In-depth knowledge of the disease processes and awareness of sequalae that uniquely influence the risks and benefits of anesthetics are needed to make informed decisions. Because these vulnerable populations are often susceptible to perioperative airway or cardiopulmonary complications, the use of regional anesthesia can be advantageous. However, these clinical conditions already involve compromised neural tissue and, as such, create additional concern that regional anesthesia may result in new or worsened deficits. The following discussion is not intended to be a full review of each disease process, but rather provides a concise, yet thorough, discussion of the available literature on regional anesthesia in the more common, but still rare, pediatric neurological disorders. We aim to provide a framework for pediatric anesthesiologists to reengage in a healthy discussion about the risks and benefits of utilizing regional anesthesia in this vulnerable population.

Epidural bolus versus continuous epidural infusion analgesia on optic nerve sheath diameter in paediatric patients: A prospective, double-blind, randomised trial

The use of programmed intermittent epidural bolus for postoperative analgesia may have greater analgesic efficacy than continuous epidural infusion. However, the rapid delivery speed used with an epidural bolus is more likely to increase intracranial pressure. We compared the effects of lumbar epidural bolus versus continuous infusion epidural analgesia on intracranial pressure in children using optic nerve sheath diameter as a marker. We randomly assigned 40 paediatric patients to bolus or infusion groups. Epidural analgesia (0.15% ropivacaine 0.3 ml·kg⁻¹) was administered via bolus or infusion. Ultrasonography was used to measure the optic nerve sheath diameter before (T0), at 3 min (T1), 10 min (T2), and 70 min (T3) after starting the pump. There were statistically significant between-group differences in optic nerve sheath diameter over time (P_{Group x Time} = 0.045). From T0–T3, the area under the curve values were similar between the two groups. Although there were differences in the patterns of optic nerve sheath diameter change according to the delivery mode, the use of lumbar epidural bolus did not increase the risk of intracranial pressure increase over that of continuous infusion. Further research is needed to investigate intracranial pressure changes after continuous application of each delivery mode.

Impact of tranexamic acid use on blood loss and transfusion rates following femoral varus derotational osteotomy in children with cerebral palsy

PURPOSE

Previous studies have established the safety and efficacy of tranexamic acid (TXA) in reducing blood loss after total joint arthroplasty and spinal fusion surgery; however, literature regarding the effectiveness of intraoperative TXA in children with cerebral palsy (CP) is limited. The aim of this study was to investigate the safety and efficacy of intraoperative TXA in reducing blood loss and transfusion requirements for children with CP undergoing a proximal femoral varus derotational osteotomy (VDRO).

METHODS

This is a retrospective review of 258 children with CP who underwent VDRO performed at the author's institution between 2004 and 2017. In all, 36 subjects underwent VDRO surgery with administration of intravenous TXA and 222 subjects underwent VDRO without administration of TXA. Outcome measures including blood loss, transfusion requirements and venous thromboembolic events were compared between groups using t-tests and chi-squared tests.

RESULTS

No significant differences were seen in the rates of transfusion between groups for the entire hospitalization (TXA group: 11.1% versus No TXA group: 19.8%), intraoperatively (TXA: 2.8% versus No TXA: 9.0%) or postoperatively (TXA: 8.3% versus No TXA: 14.4%). Intraoperative estimated blood loss (TXA: 144.4 mL versus No TXA: 159.0 mL) and percentage blood loss (TXA: 8.9% versus No TXA: 9.2%) were similar between groups. No major thromboembolic complications events occurred in either group.

CONCLUSION

The use of TXA was not associated with thromboembolic complications in this series of children with CP undergoing VDRO surgery. Though there was a trend toward lower rates of intraoperative and postoperative blood transfusion with TXA use in these patients, the differences were not significant, possibly due to low estimated blood loss in both groups and sample size.

LEVEL OF EVIDENCE

III- retrospective comparative study.

Management of pain in children and adolescents with cerebral palsy: a systematic review

AIM

To determine the efficacy of interventions for the management of pain in children and adolescents with cerebral palsy (CP).

METHOD

Electronic databases were searched from the earliest date possible to April 2018 using a mixture of subject headings and free text. Inclusion criteria comprised of studies with (1) diagnosis of CP, (2) under the age of 18 years, (3) intervention for the management of pain, (4) outcome measure of pain, and (5) studies published in English-language peer-reviewed journals.

RESULTS

Fifty-seven studies met the eligibility criteria. Pain related to (n=number of studies): hypertonia (n=17), spastic hip disease (n=13), procedures for the management of CP (n=7), postoperative (n=18), and other (n=2). Most of the studies were of level III to level V evidence.

INTERPRETATION

There is level II evidence to support intrathecal baclofen therapy for pain secondary to hypertonia in spastic and spastic-dyskinetic CP, and non-pharmacological interventions for procedural pain and pharmacological interventions for postoperative pain. Most studies were restricted by retrospective design and limited use of validated outcome measures. Future research is needed to explore multidisciplinary interventions for chronic pain and pain secondary to dystonia. Clinicians and researchers would benefit from a standardized approach to pain assessment.

WHAT THIS PAPER ADDS

The strongest evidence exists for pharmacological treatments for postoperative pain in children and adolescents with cerebral palsy (CP). There is moderate evidence for the efficacy of intrathecal baclofen for pain related to hypertonia in predominately spastic CP. There is a lack of standardization in the assessment of pain. There is limited evidence for multimodal and non-pharmacological strategies in paediatric CP.

Efficacy of preemptive analgesia on acute postoperative pain in children undergoing major orthopedic surgery of the lower extremities

Background

Children undergoing major orthopedic surgery of the lower extremities can experience severe postoperative pain; yet, the ideal postoperative pain management strategy is unknown. Thus, in this patient population, we investigated the effect of intraoperative epidural infusion of local anesthetic on acute postoperative pain and analgesic consumption.

Patients and methods

Patients (N=50, 3-12 years) randomly received either ropivacaine 0.15% (preemptive group) or normal saline (control group) as an initial bolus of 0.2 mL/kg, followed by continuous infusion of 0.15 mL/kg/h throughout surgery. Following surgery, patient-controlled epidural analgesia with ropivacaine 0.1% was provided. The main study outcomes were the revised Face, Legs, Activity, Cry, and Consolability pain scores, epidural ropivacaine consumption, and additional analgesic requirements during the first 48 hours postoperatively.

Results

Forty-seven patients completed the study, 23 in the preemptive group and 24 in the control group, respectively. The revised Face, Legs, Activity, Cry, and Consolability pain scores were significantly lower in the preemptive group only at 30 minutes after postanesthesia care unit arrival and 6 hours after surgery (median difference -1.0, 95% CI -2.0 to -1.0, P=0.001 and median difference -2.0, 95% CI -3.0 to -1.0, P=0.005, respectively). However, they were not significantly different between the groups at 12, 24, and 48 hours postoperatively. Epidural ropivacaine consumption and additional analgesic requirements throughout 48 hours postoperatively were not significantly different between the groups.

Conclusion

Intraoperative epidural infusion of ropivacaine did not demonstrate preemptive analgesic efficacy within 48 hours postoperatively in children undergoing extensive lower limb orthopedic surgery.