Development of Consensus-Based Best Practice Guidelines for Postoperative Care Following Posterior Spinal Fusion for Adolescent Idiopathic Scoliosis

Early mobilization can reduce the incidence of surgical site infections in patients undergoing spinal fusion surgery: A nested case-control study

BACKGROUND

To examine the influence of early mobilization on the risk of surgical site infections (SSI) in patients undergoing spinal fusion surgery.

METHODS

The retrospective cohort consisted of all consecutive patients who underwent spinal fusion surgery at our institution. For each case of SSI, 2 control patients without SSI at the corresponding index date were selected. Mobilization was predefined as "delayed" if it occurred more than 36 hours postoperatively. To account for potential confounding variables, we performed further adjustments using conditional logistic regression models. Subgroup analyses were conducted to evaluate the robustness of the statistical associations.

RESULTS

Following the predefined statistical protocol and matching criteria, we matched 236 control cases to the SSI cases. Upon adjustment for confounding factors, our findings revealed that the risk of SSI was 120% higher in the group beginning mobilization more than 36 hours after surgery compared to the group beginning mobilization within 36 hours postoperatively (odds ratio = 2.206, 95% confidence interval 1.169-4.166, P = .015). In subgroup analyses, this statistical trend remained consistent.

CONCLUSIONS

Early mobilization within 36 hours following spinal fusion surgery significantly reduces the risk of SSI. This pattern of reduced risk remains consistent among patients with degenerative diseases or spinal deformities.

Pre-operative carbohydrate drink in pediatric spine fusion: randomized control trial

PURPOSE

As rapid discharge protocols for pediatric spine fusion shorten stays, gastrointestinal (GI) complications are uncovered and cause delays in discharge. A pre-operative carbohydrate (CHO) drink has been shown to improve perioperative GI symptoms and functional return but has not been examined in pediatric spine patients. We aimed to determine if a preoperative CHO drink is safe in pediatric spine fusion patients, and if it improves their comfort scores and return of bowel function.

METHODS

We prospectively randomized ASA-1 and -2 pediatric spine fusion patients to either a pre-anesthesia carbohydrate drink 2 h prior to surgery or to a control group (standard 8 h NPO), blinded to surgical team. We documented time to return to flatus, bowel movement, GI symptoms, and comfort scores for 72 h post-operatively or until discharge.

RESULTS

62 patients were randomized. There was no significant differences between the groups' pre-operative characteristics, surgical details, nor post-operative morphine dose equivalents, except for EBL (405 cc control, 340 cc CHO drink, p = 0.044). There were no perioperative complications related to ingestion of the CHO drink. CHO group had a positive trend for earlier return of flatus (21% vs. 3% return at 12 h), and comfort scores for anxiety and abdominal pain, but no statistically significant differences. There was no difference in length of stay or time to first bowel movement.

CONCLUSION

There were no complications related to ingestion of a CHO drink 2 h prior to pediatric spinal fusion surgery. Further studies are needed to develop a study blinded to the participants with larger sample size. Level of evidence I.

Nausea and Vomiting After Posterior Spinal Fusion in Adolescent Idiopathic Scoliosis: A Systematic and Critical Analysis Review

BACKGROUND

Postoperative nausea and vomiting (PONV) affects patient satisfaction, health care costs, and hospital stay by complicating the postoperative recovery period after adolescent idiopathic scoliosis (AIS) spinal fusion surgery. Our goal was to identify recommendations for optimal management of PONV in AIS patients undergoing posterior spinal fusion (PSF).

METHODS

We performed a systematic review in June 2022, searching the PubMed and Embase electronic databases using search terms "(Adolescent idiopathic scoliosis) AND (Postoperative) AND (Nausea) AND (Vomiting)." Three authors reviewed the 402 abstracts identified from January 1991 to June 2022. Studies that included adolescents or young adults (<21 years) with AIS undergoing PSF were selected for full-text review by consensus. We identified 34 studies reporting on incidence of PONV. Only 6 studies examined PONV as the primary outcome, whereas remaining were reported PONV as a secondary outcome. Journal of Bone and Joint Surgery Grades of recommendation were assigned to potential interventions or clinical practice influencing incidence of PONV with respect to operative period (preoperative, intraoperative, and postoperative period) on the basis that potential guidelines/interventions for PONV can be targeted at those periods.

RESULTS

A total of 11 factors were graded, 5 of which were related to intervention and 6 were clinical practice-related. Eight factors could be classified into the operative period-1 in the intraoperative period and 7 in the postoperative period, whereas the remaining 3 recommendations had overlapping periods. The majority of grades of recommendations given were inconclusive or conflicting. The statement that neuraxial and postoperative systemic-only opioid therapy have a similar incidence of PONV was supported by good (Grade A) evidence. There was fair (Grade B) and poor evidence (Grade C) to avoid opioid antagonists and nonopioid local analgesia using wound catheters as PONV-reducing measures.

CONCLUSION

Although outcomes after spinal fusion for AIS have been studied extensively, the literature on PONV outcomes is scarce and incomplete. PONV is most commonly included as a secondary outcome in studies related to pain management. This study is the first to specifically identify evidence and recommendations for interventions or clinical practice that influence PONV in AIS patients undergoing PSF. Most interventions and clinical practices have conflicting or limited data to support them, whereas others have low-level evidence as to whether the intervention/clinical practice influences the incidence of PONV. We have identified the need for expanded research using PONV as a primary outcome in patients with AIS undergoing spinal fusion surgery.

Analgesic options for anterior approach to scoliosis repair: a scoping review

PURPOSE

The ideal analgesic regimen for the anterior approach to scoliosis repair is not clearly defined. The purpose of the study was to summarize and identify gaps in the current literature specific to the anterior approach to scoliosis repair.

METHODS

A scoping review was conducted in July 2022 utilizing PubMed, Cochrane, and Scopus databases guided by the PRISMA-ScR framework.

RESULTS

The database search generated 641 possible articles, 13 of which met all inclusion criteria. All articles focused on the effectiveness and safety of regional anesthetic techniques, while a minority also provided both opioid and non-opioid medication frameworks.

CONCLUSION

Continuous Epidural Analgesia (CEA) is the most well-studied intervention for pain control in anterior scoliosis repair, but other, more novel regional anesthetic techniques offer safe and effective potential alternatives. More research is indicated to compare the effectiveness of different regional techniques and perioperative medication regimens specific to anterior scoliosis repair.

Safety and efficacy of intrathecal morphine in early onset scoliosis surgery

Intrathecal morphine (IM) is a popular adjunct for pain management in spinal deformity surgery for idiopathic scoliosis. It has not been studied in patients with early onset scoliosis (EOS). We retrospectively reviewed EOS patients undergoing growth-friendly surgery who received IM or did not receive IM (non-IM). Data from initial insertion and final fusion procedures were studied. IM was not used for lengthening procedures, short procedures (<3 h), patients with significant underlying respiratory issues, paraplegia, unsuccessful access and anesthesiologist discretion. We assessed pediatric ICU (PICU) admission and IM complications (respiratory depression, pruritus and nausea/vomiting), time to first postoperative opiate, and pain scores. There were 97 patients including 97 initial insertions (26 IM and 71 non-IM) and 74 patients with final fusions (17 IM and 57 non-IM). The first dose of opioids following insertion and final fusion occurred at 16.8 ± 3.8 and 16.8 ± 3.1 h postoperatively in the IM group compared to 5.5 ± 2.8 and 8.3 ± 3.2 h in the non-IM group, respectively ( P  < 0.001). Postoperative pain scores were lower in the IM groups ( P  = 0.001). Two patients with IM developed mild respiratory depression following initial insertion ( P  = 0.01) but did not require PICU admission. The rate of respiratory depression was not different between the final fusion groups. There was no difference between pruritus and nausea/vomiting at the final fusion. Preincision IM can provide well-tolerated and effective initial postoperative analgesia in select children with EOS undergoing spinal deformity surgery.

Rapid discharge protocol reduces length of stay and eliminates postoperative nausea and vomiting after surgery for adolescent idiopathic scoliosis

BACKGROUND

Implementing standardized pathways following adolescent idiopathic scoliosis surgery have been shown to reduce length of stay (LOS). However, controversies still exist. This applies especially to the transition to solid foods, postoperative pruritus and postoperative nausea and vomiting (PONV). The aim of this proposed protocol is to present an option to reduce these factors while reducing the LOS.

METHODS

The protocol was designed with reduction of morphine. One-hundred-eight patients were included in this study, including sixty-six controls prior to intervention. All underwent posterior scoliosis surgery. All patients were scored daily using a Numeric rating scale (NRS) and noted if any nausea, vomiting or pruritus was present. All medications were recorded. For every twenty patients included the steering committee met to identify any implementation issues.

RESULTS

LOS was reduced from 6.3 to 3.6 days (43% reduction, P=0.003). PONV was reduced from affecting 82% to 9% of patients (P<0.0001). Patients experiencing postoperative pruritus were reduced from 40% to 2%. (P<0.001). Time spent in postoperative recovery was reduced from 278[117-470] mins to 199[128-643], P<0.001. Patient´s pain scores remained unchanged compared to controls (mean 4[3-8]). We found no adverse effects of solid food intake from postoperative day 0 CONCLUSION: We found a significant reduction in length of stay, postoperative nausea and vomiting and pruritus after implementation of the protocol. This allowed for no restrictions in regards to solid food intake postoperatively.

The safety and efficacy of intrathecal morphine in pediatric spinal deformity surgery: a 25-year single-center experience

PURPOSE

Pre-incision intrathecal morphine (IM) is a popular adjunct in adolescent idiopathic spinal deformity surgery. This study represents our 25-year experience with IM in all diagnostic groups undergoing posterior spinal fusion (PSF) and segmental instrumentation (SI).

METHODS

Our prospective Pediatric Orthopaedic Spine Database (1992-2018) identified all patients undergoing PSF and SI. We included patients 21 years of age or less, had a PSF with SSI, and received the recommended IM dose of 9-19 mcg/kg (up to 1 mg) or no IM. We assessed demographics, pain scores, duration of surgery, time to first dose of narcotics, pediatric intensive care unit (PICU) admission, length of hospital stay, and IM complications (respiratory depression, pruritus, nausea/vomiting).

RESULTS

There were 984 patients who met inclusion criteria: 760 patients received IM, 224 did not (non-IM). They were divided into 5 diagnostic groups: idiopathic, neuromuscular, syndromic, and congenital scoliosis and kyphosis. The mean first post-operative opioid following IM administration was at 16.1 h in the IM group compared to 8.7 h in the non-IM group (p =  < 0.001). The post-operative pain scores in the IM groups were significantly lower (p =  < 0.001). Sixteen patients (2%) in the IM group were admitted to the PICU for observation secondary to respiratory depression, none requiring re-intubation. There were no other complications related to IM.

CONCLUSION

Pre-incision IM is a safe adjunct for pain management in select children in all diagnostic groups undergoing spinal deformity surgery. There were no serious complications.

LEVEL OF EVIDENCE

III.

Timelines for returning to physical activity following pediatric spinal surgery: recommendations from the literature and preliminary data

Objective

Participation in physical activity and sports is known to have positive implications for physical health, and for social and emotional wellbeing of children. Following corrective spinal surgery for scoliosis, the timeline for the return to activities and sports varies from surgeon to surgeon and from location to location, and return to activities can be limited due to pain, fear, and decreased flexibility. It is critical that patients know best-practice guidelines, and it is equally critical that medical professionals know whether their patients are following those guidelines. This paper includes a summary of recommendations published in the literature, and a pilot study to address a gap in the literature on determining how long, post-surgery, adolescents with idiopathic scoliosis waited before returning to various self-care and physical activities, and what factors influenced return to activities. We used a mixed-method approach that involved two phases: a questionnaire (n = 8), and subsequent interviews of some participants (n = 3). Participants were ages 14–17 (M = 15.4) and had had posterior instrumentation and fusion for scoliosis in the past 2 years.

Results

Some patients were cautious about return to activities, either because of emotional or medical reasons. However, in many instances, participants returned to physical activities earlier than was recommended, primarily for emotional and social reasons.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13104-021-05571-2.

Evaluation of Outcomes Before and After Implementation of a Standardized Postoperative Care Pathway in Pediatric Posterior Spinal Fusion Patients

BACKGROUND

Standardized pathways decrease variability and improve outcomes and safety.

PURPOSE

The article aims to evaluate outcomes of a standardized postoperative care pathway compared with individual surgeon preference.

METHODS

A review of patients prestandardization and poststandardization was performed. Patients between the ages of 10-21 years with adolescent idiopathic scoliosis (ICD-9 code 737.30) admitted to the hospital for posterior spinal fusion (CPT code 22630) were included in the study. The prestandardization group (25 patients) was enrolled from April 1, 2010, through March 30, 2011, and the poststandardization group (25 patients) from April 1, 2014, to March 30, 2015. Exclusion criteria were renal disease, epilepsy, neurological disorder, or postoperative complications that led to change in routine care including ileus or fever greater than 102 °F. Data were analyzed using the Wilcoxon signed rank test, with significance set at p < .001.

RESULTS

The length of stay (p = .0166), time to ambulation (p < .0001), patient-controlled analgesia use (p < .0001), and postoperative time to resumption of regular diet (p < .0001) were all significantly decreased in the poststandardization group. There were no complications or readmissions in either group.

CONCLUSION

The standardized pathway resulted in shorter length of stay, decreased narcotic use, decreased time to regular diet, and decreased time to ambulation with no increase in complication rates.

Improving Safety and Efficacy in the Surgical Management of Low-tone Neuromuscular Scoliosis: Integrated Approach With a 2-attending Surgeon Operative Team and Modified Anesthesia Protocol

BACKGROUND

Substantially increased operative time and amount of bleeding may complicate the course of surgical treatment in neuromuscular scoliosis. A well-organized team approach is required to reduce morbidity. The aim of this study is to review our early, short-term surgical outcomes with our new integrated approach that includes a 2-attending surgeon team and modifications in the anesthesia protocol in low-tone neuromuscular scoliosis and compare with a matched cohort of our historic patients.

METHODS

We retrospectively reviewed our patients with (1) neuromuscular scoliosis with collapsing spine deformity, (2) low-tone neuromuscular etiology, (3) multilevel posterior column osteotomies with posterior all pedicle screw spinal fusion, and (4) more than 1-year follow-up. Patients were grouped into 2: group 1 consisted of patients managed with the integrated surgical team approach, group 2 included the matched historic patients.

RESULTS

There were 16 patients in group 1 and 17 patients in group 2. There was no significant difference between the groups regarding age, sex, body mass index, number of levels fused, major coronal deformity magnitude, pelvic obliquity, number of posterior column osteotomies, or amount of deformity correction. However, significantly shorter operative time (241 vs. 297 min, P=0.006), less intraoperative bleeding (1082 vs. 1852 mL, P=0.001), less intraoperative blood transfusion (2.1 vs. 3.1 U, P=0.028), less postoperative intensive care unit admission (23% vs. 100%, P=0.001), and shorter hospital stay (4.7 vs. 5.9 d, P=0.013) were observed in group 1.

CONCLUSIONS

Our results indicate that spinal deformity surgery in patients with underlying low-tone neuromuscular disease may not be as intimidating as previously thought. Our surgical team approach integrating a 2-attending surgeon operative team, a new anesthetic protocol that includes a modification of perioperative blood management is effective in reducing operative times, blood loss, transfusion rates, intensive care unit admission, and length of hospital stay.

LEVELS OF EVIDENCE

Level III-retrospective comparative study.

Comparing short-term AIS post-operative complications between ACS-NSQIP and a surgeon study group

STUDY DESIGN

Prospective cohort review.

OBJECTIVE

To compare two AIS databases to determine if a performance improvement-based surgeon group has different outcomes compared to a national database. The American College of Surgeon's National Quality Improvement Program (ACS-NSQIP) and a surgeon study group (SG) collect prospective data on AIS surgery outcomes. NSQIP offers open enrollment to all institutions, and SG membership is limited to 15 high-volume institutions, with a major initiative to improve surgeon performance. While both provide important outcome benchmarks, they may reflect outcomes that are not relatable nationwide.

METHODS

The ASC-NSQIP Pediatric Spine Fusion and SG database were queried for AIS 30- and 90-day complication data for 2014 and 2015. Prospective enrollment and a dedicated site coordinator with rigorous data quality assurance protocols existed for both registries. Outcomes were compared between groups with respect to superficial and deep surgical site infections (SSI), neurologic injury, readmission, and reoperation.

RESULTS

There were a total of 2927 AIS patients included in the ASC-NSQIP data and 721 in the SG database. Total complication rate was 9.4% NSQIP and 3.6% SG. At 90 days, there were fewer surgical site infections reported by SG than ASC-NSQIP (0.6% vs. 1.6%, p = 0.03). Similarly, there were less spinal cord injuries (0.8% vs 1.5%, p = 0.006), 30-day readmissions (0.8% vs. 2.6%, p = 0.002), and 30-day reoperations (0.6% vs. 1.7%, p = 0.02) in the SG cohort.

CONCLUSIONS

Comparison of these two data sets suggests a range of complications and readmission rates, with the SG demonstrating lower values. These results are likely multi-factorial with the performance improvement initiative of the SG playing a role. Understanding the rate and ultimate risk factors for readmission and complications from big data sources has the potential to further drive quality improvement.

LEVEL OF EVIDENCE

III.

Postoperative Dexamethasone Following Posterior Spinal Fusion for Adolescent Idiopathic Scoliosis

BACKGROUND

Surgeons have hesitated to use steroids in patients undergoing posterior spinal fusion because of the risk of wound complications. The literature has supported the use of postoperative steroids in other areas of orthopaedics on the basis of more rapid recovery and improved postoperative pain control. We hypothesized that a short course of postoperative dexamethasone following posterior spinal fusion for the treatment of adolescent idiopathic scoliosis (AIS) would decrease opioid usage without increasing wound-healing problems.

METHODS

Consecutive patients undergoing posterior spinal fusion for the treatment of AIS from 2015 to 2018 at a single hospital were included. A review of demographic characteristics, curve characteristics, surgical data, and postoperative clinic notes was performed. Opioid usage was determined by converting all postoperative opioids given into morphine milligram equivalents (MME).

RESULTS

Sixty-five patients underwent posterior spinal fusion for the treatment of AIS without postoperative steroids (the NS group), and 48 patients were managed with 3 doses of postoperative steroids (the WS group) (median, 8.0 mg/dose). There was no difference between the groups in terms of curve magnitude, number of vertebrae fused, or estimated blood loss. There was a 39.6% decrease in total MME used and a 29.5% decrease in weight-based MME used in the group receiving postoperative steroids (82.0 mg [1.29 mg/kg] in the NS group versus 49.5 mg [0.91 mg/kg] in the WS group]; p < 0.001). This difference persisted after accounting for gabapentin, ketorolac, and diazepam usage; surgical time; curve size; levels fused; and number of osteotomies (median decrease, 0.756 mg/kg [95% CI, 0.307 to 1.205 mg/kg]; p = 0.001). Three patients in the NS group (4.6%) and 4 patients in the WS group (8.3%) developed wound dehiscence requiring wound care (p = 0.53). One patient in the NS group required surgical debridement for the treatment of an infection. Patients in the WS group were more likely to walk at the time of the initial physical therapy evaluation (60.4% versus 35.4%; p = 0.013).

CONCLUSIONS

A short course of postoperative steroids after posterior spinal fusion was associated with a 40% decrease in the use of opioids, with no increase in wound complications. Surgeons may consider the use of perioperative steroids in an effort to decrease the use of postoperative opioids following posterior spinal fusion for the treatment of AIS.

LEVEL OF EVIDENCE

Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

Variability in length of stay following neuromuscular spinal fusion

BACKGROUND

Patients with neuromuscular scoliosis (NMS) who undergo posterior spinal fusion (PSF) often have long, protracted hospital stays because of numerous comorbidities. Coordinated perioperative pathways can reduce length of hospitalization (LOH) without increasing complications; however, a subset of patients may not be suited to rapid mobilization and early discharge.

METHODS

197 patients with NMS underwent PSF at a single hospital by two surgeons with a post-operative care pathway emphasizing early mobilization, rapid transition to enteral feeds, and discharge prior to first bowel movement. Average LOH was 4.9 days for all patients. Patients were divided into quartiles (< 3 days, 3-5 days, 5-7 days, > 7 days) based on their LOH, and their charts were retrospectively reviewed for preoperative, intraoperative, and postoperative factors associated with their LOH.

RESULTS

Age at surgery, gender, the need for tube feeds, and specific underlying neuromuscular disorder were not significant predictors of LOH; however, severely involved cerebral palsy (CP) patients (GMFCS 4/5) were more likely to have extended stays than GMFCS 1-3 patients (p = 0.02). Radiographic predictors of LOH included major coronal Cobb angle (p = 0.002) and pelvic obliquity (p = 0.02). Intraoperative predictors included longer surgical times, greater numbers of levels fused and need for intraoperative or postoperative blood transfusion (p < 0.05). The need for ICU admission and development of a pulmonary complication were significantly more likely to fall into the extended LOH group (p < 0.05).

CONCLUSIONS

Several variables have been identified as significant predictors of LOH after PSF for NMS in the setting of a standardized discharge pathway. Patients with smaller curves and less complex surgeries were more amenable to accelerated discharge. Conversely, patients with severe CP with large curves and pelvic obliquity requiring longer surgeries with more blood loss may not be ideal candidates. These data can be used to inform providers' and families' post-operative expectations.

LEVEL OF EVIDENCE

Therapeutic Level III.

Expert Consensus for Early Onset Scoliosis Surgery

BACKGROUND

Despite a validated classification system, high-quality multicenter research databases (CSSG/GSSG), and a recent proliferation in publications, early-onset scoliosis (EOS) surgeons have no consensus on standards for surgical treatment. The 21st-century revolution in EOS care has only accelerated, with the arrival of a classification system, magnetically controlled growing rod, nusinersen, and improved nonoperative care (Mehta or Risser casting and compliance-monitored braces). This dizzying pace of change may have outstripped our ability to develop best-practice standards for EOS surgical indications. To learn where consensus is best (and worst) at this moment, we surveyed EOS world thought-leaders on a collection of representative cases.

METHODS

A 6-case survey was constructed and sent to 20 EOS world thought-leaders. The cases were selected to be representative of the major treatment categories: idiopathic, neuromuscular, syndromic, congenital, thoracic dysplasia, and spinal muscular atrophy (specifically to assess the impact of nusinersen and parasol deformity on surgical planning). Respondents were queried regarding treatment with specific attention to instrumentation and construct when surgery was selected. Responses regarding surgical timing and technique were analyzed for consensus (defined as >80%). χ analysis was performed to evaluate for differences in treatment preferences based on years of experience.

RESULTS

The survey response was 100%. Clinical experience ranged from 8 to 40 years (average 23.9 y). There was no consensus on any case. The greatest variability was on the congenital case; the closest to consensus was on the spinal muscular atrophy case. Three or more approaches were selected for all 6 cases; >4 approaches were selected for 5 cases. There is a trend towards screw fixation for proximal anchors. The management of thoracic dysplasia and parasol deformity is far from consensus.

CONCLUSION

The lack of consensus for surgical treatment of 6 representative EOS cases demands a renewed effort and commitment to develop best-practice guidelines based on multicenter outcome data.

LEVEL OF EVIDENCE

Level V-Expert Opinion.

An analysis of the safety and efficacy of dexmedetomidine in posterior spinal fusion surgery for adolescent idiopathic scoliosis: a prospective randomized study

PURPOSE

To evaluate whether use of dexmedetomidine, a centrally acting α2 adrenergic agonist, reduces opioid consumption in PSF.

METHODS

Adolescent idiopathic scoliosis patients who underwent PSF were randomized into morphine (M) and dexmedetomidine (D) group. M group received a 10 μg/kg/h IV infusion of morphine for 24 h post-surgery, while the D group received a 0.4 μg/kg/h IV infusion of dexmedetomidine. Trained nursing staffs recorded hourly vital parameters (blood pressure, pulse rate, respiratory rate, and oxygen saturation). Pain, postoperative nausea/vomiting (PONV), and sedation were rated using: the numerical rating scale (NRS), the PONV scale, and sedation status scale (SS). Preemptive analgesia with gabapentin and postoperative analgesia with ketorolac and paracetamol were used in both the groups. Any complications in the study groups were recorded.

RESULTS

No significant difference was noted between the groups (M vs D) with respect to NRS (3.1 ± 0.8 vs 2.7 ± 0.5) (p = 0.07) and breakthrough analgesia requirements (0.78 vs 0.45) (p = 0.17). A significant difference was noted between the groups with respect to the secondary outcome measures of time to ambulation (56.6 ± 12.7 h vs 45.2 ± 7.7 h), time to oral analgesics (84.3 ± 20 h vs 64.0 ± 15.4 h), and time to liquid intake (8.3 ± 1.3 h vs 7.2 ± 1.2 h). The M group had a higher PONV score (0.46 ± 0.3 vs 0.16 ± 0.1) (p < 0.001) and mean time to bowel opening (112.7 ± 28.4 h vs 90.1 ± 20.5 h) (p < 0.001). Additionally, the enema or suppository requirements for bowel opening were significantly more (0.59 ± 0.6 vs 0.26 ± 0.4) (p = 0.01) in the M group.

CONCLUSION

Dexmedetomidine provided analgesia comparable to morphine with lower PONV scores. It also reduced the opioid requirements in the PSF patients without additional complications and can therefore be incorporated in pain management protocols.

Quality improvement in post-operative opioid and benzodiazepine regimen in adolescent patients after posterior spinal fusion

STUDY DESIGN

Prospective, quality-improvement.

OBJECTIVES

To evaluate pain management following posterior spinal fusion (PSF) for adolescent idiopathic scoliosis (AIS) and Scheuermann's Kyphosis (SK) determine the optimal opioid and benzodiazepine prescription amounts, and implement a multimodal post-operative pain regimen. The incidence of prescription opioid abuse is increasing in the United States. Orthopedic spine surgeons often prescribe large quantities of opioids post-operatively for pain control. Previous efforts on pain control have focused on in-patient post-operative regimens after PSF.

METHODS

Between 2/1/17 and 5/30/18 patients with AIS or SK were sent home with pain diaries after discharge to document daily narcotic, benzodiazepine, non-steroidal anti-inflammatory drugs (NSAIDs), acetaminophen and gabapentin use following PSF. Diaries were collected at the 4 week post-operative visit. Data from two cohorts were reviewed: pre-intervention and post-intervention. Our prescription intervention went into effect 9/1/17.

RESULTS

Twenty-four (30%) patients returned pain diaries. The pre-intervention cohort consisted of 12 patients (7 female; 5 males; 14.9 years (range 12-19)). Patients were prescribed on average 80 × 5 mg tabs (26-140) of oxycodone but used on average 45 tabs (12-129) over an average of 17.5 days (9-33). They were prescribed an average of 30 × 2 mg tabs (0-150) of diazepam, used on average 4.8 (0-105) tabs over 12.5 (5-25) days. The post-intervention cohort consists of 12 patients (9 female; 3 male; 14.8 years (12-19)). They were prescribed on average 50 × 5 mg tabs (35-80) of oxycodone, used 20.5 (0-39.5) tabs over 8.5 days (3-16). They were prescribed on average 18 × 2 mg tabs of diazepam (0-43), used 5.4 tabs (0-19) over 10 days (5-14).

CONCLUSIONS

This analysis has directly impacted clinical practice. Prescribed opioid and benzodiazepine doses have been decreased by over 50%, and more resources are being directed towards determining the disparity between the amount of medications prescribed and consumed in our post-operative patients.

Intrathecal Morphine in the Presence of a Syrinx in Pediatric Spinal Deformity Surgery

BACKGROUND

Intrathecal morphine (IM) is a popular adjunct for pain relief during pediatric spinal deformity surgery. There is no literature regarding its usefulness and safety in the presence of a spinal cord syrinx for patients undergoing spinal instrumentation. Anesthesiologists have previously been reluctant to use IM in the presence of any syrinx.

METHODS

We retrospectively reviewed all patients with a preoperatively diagnosed spinal cord syrinx undergoing spinal deformity surgery who received IM and did not receive IM (non-IM). We recorded location of the syrinx, surgical time, length of stay, unexpected pediatric intensive care unit (PICU) admission, IM related complications (neurological, respiratory depression, or pruritus, nausea/vomiting), and reason for no IM administration. Patients with a syrinx and myelodysplasia (8), tethered spinal cord (4), paraplegia (1), holocord (1), neuroblastoma (1), and spinal cord glioma (1) were not given IM. Other reasons included a failed attempt (1), expectedly short surgical time (1), and anesthesiologist declined (2).

RESULTS

There were 42 patients who met the inclusion criteria. Twenty-two patients received IM, while 20 patients did not. Patients receiving IM had 4 cervical, 5 cervicothoracic, 12 thoracic syrinxes, and 1 holocord syrinx. The non-IM group had 8 cervicothoracic, 6 thoracic, 4 holocord syrinxes, and 2 had unclassified locations. There were no neurological complications in the IM group, and 1 patient experienced respiratory depression following a shorter than expected surgery and was observed overnight in the PICU. One patient in the non-IM group with a holocord syrinx had temporary lower extremity weakness postoperatively that completely resolved and 4 patients were unexpectedly admitted to the PICU. Pruritus and nausea/vomiting was mild and similar in both groups.

CONCLUSIONS

Our study demonstrates that with careful preoperative evaluation, most patients with a spinal cord syrinx can safely be given IM. Certain patients, such as those with a spinal holocord syrinx may have anatomic reasons to avoid IM, but those who are deemed appropriate for IM can receive it safely.

LEVEL OF EVIDENCE

Level III-therapeutic study; retrospective comparative study.

Deep Infections After Pediatric Spinal Arthrodesis: Differences Exist with Idiopathic, Neuromuscular, or Genetic and Syndromic Cause of Deformity

BACKGROUND

Little is known about the rates, timing, and causative microorganisms of deep surgical site infections after spinal arthrodesis in patients with genetic and syndromic scoliosis compared with patients with adolescent idiopathic scoliosis and kyphosis or patients with neuromuscular scoliosis.

METHODS

We reviewed data from 1,353 patients who were <21 years of age and had undergone spinal arthrodesis for deformity correction by 1 surgeon from 2000 to 2015. Deformity causes were genetic, idiopathic, or neuromuscular. We identified patients who had undergone an unplanned surgical procedure for a deep surgical site infection that was early (≤90 days after the procedure) or late (>90 days after the procedure). We compared deep surgical site infection rates, timing, and causative microorganisms by deformity cause.

RESULTS

Deep surgical site infections occurred in 65 patients (4.8%): 4.2% for patients with genetic and syndromic scoliosis, 2.7% for patients with adolescent idiopathic scoliosis and kyphosis, and 10.0% for patients with neuromuscular scoliosis. Of the deep surgical site infections, 26 (40%) occurred early and 39 (60%) occurred late. The median times to deep surgical site infection onset were 51 days (range, 7 days to 7 years) in patients with genetic and syndromic scoliosis, 827 days (range, 10 days to 12 years) in patients with adolescent idiopathic scoliosis and kyphosis, and 45 days (range, 13 days to 6 years) in patients with neuromuscular scoliosis. Seventy-six microorganisms (41 gram-positive and 35 gram-negative) were isolated from 47 children with positive cultures; the most common was coagulase-negative Staphylococcus (n = 13). The ratio of gram-positive to gram-negative microorganisms was highest in patients with adolescent idiopathic scoliosis and kyphosis (4:1) and lowest in patients with genetic and syndromic scoliosis (0.5:1). In genetic and syndromic scoliosis, both early and late deep surgical site infections were more frequently caused by gram-negative bacteria. In neuromuscular scoliosis, early deep surgical site infections were more frequently caused by gram-negative bacteria, and late deep surgical site infections were more frequently caused by gram-positive bacteria. In adolescent idiopathic scoliosis and kyphosis, both early and late deep surgical site infections were more commonly caused by gram-positive bacteria. Methicillin-resistant Staphylococcus aureus was identified in 2 late deep surgical site infections in patients with neuromuscular scoliosis.

CONCLUSIONS

Deep surgical site infections were more common in genetic and syndromic scoliosis than in adolescent idiopathic scoliosis and kyphosis, but less common than in neuromuscular scoliosis. Adolescent idiopathic scoliosis and kyphosis had the highest ratio of late to early deep surgical site infections. Patients with genetic and syndromic scoliosis had predominantly gram-negative microorganisms, particularly in early deep surgical site infections. Methicillin-resistant S. aureus infection was rare, occurring in only 2 patients with neuromuscular scoliosis. Gram-negative and gram-positive prophylactic antibiotics may be indicated for patients with genetic and syndromic scoliosis after spinal arthrodesis.

LEVEL OF EVIDENCE

Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

Utility of Perioperative Laboratory Tests in Pediatric Patients Undergoing Spinal Fusion for Scoliosis

STUDY DESIGN

Retrospective comparative study.

OBJECTIVES

We aimed to characterize the frequency of perioperative laboratory tests for posterior spinal fusion (PSF) for adolescent idiopathic scoliosis (AIS) and to assess whether test results affected clinical management.

SUMMARY OF BACKGROUND DATA

Perioperative laboratory tests for PSF including complete blood count, coagulation laboratory tests, basic metabolic panels (BMPs), and type and screen, are commonly ordered based on providers' discretion or existing order sets. Studies have shown unnecessary laboratory tests as financially and physically costly in adults; however, no studies have examined the necessity of common perioperative laboratory tests in pediatric spinal deformity surgery.

METHODS

Retrospective review of patients aged 10-18 years who underwent PSF for AIS at our center in the past three years. The clinical utility of perioperative laboratory tests was assessed based on detected incidence of anemia, blood transfusions, hematology/endocrinology/nephrology consultations, insulin administration, and postponed/canceled surgeries.

RESULTS

A total of 234 patients were included (mean age 14.4 ± 1.8 years, 75% female). Of 105 (44.9%) patients with preoperative coagulation laboratory tests, 21 (20%) had abnormal results; however, none had subsequent hematology consultations or canceled/postponed surgeries. Postoperatively, only 5 (2.1%) patients and 30 (12.8%) patients had hemoglobin values less than 8 g/dL on postoperative day (POD) 1 and 2, respectively. Multivariate analysis identified POD1 hemoglobin ≤9.35 g/dL as the only predictor of hemoglobin <8 g/dL on POD2. Overall, there were 8 (3.4%) indicated blood transfusions postoperatively. Costs of unnecessary laboratory tests averaged $95.27 (range $49.72 to $240.27) per patient.

CONCLUSIONS

Many perioperative laboratory orders may be unnecessary in pediatric spinal deformity surgery, subjecting patients to extraneous costs and needlesticks. In particular, preoperative coagulation laboratory tests, perioperative BMPs, and additional postoperative CBCs for those with hemoglobin >9.35 on POD1 may not be warranted.

LEVEL OF EVIDENCE

Level III, retrospective cohort study.

What Is the Evidence for Early Mobilisation in Elective Spine Surgery? A Narrative Review

Early mobilisation is a cornerstone of Enhanced Recovery after Surgery (ERAS) and is encouraged following spinal procedures. However, evidence of its implementation is limited and there are no formal guidelines on optimal prescription. This narrative review aimed to evaluate the evidence for the effect of early mobilisation following elective spinal surgery on length of stay, postoperative complications, performance-based function and patient-reported outcomes. Four trials (five articles) that compared a specific protocol of early in-hospital mobilisation to no structured mobilisation or bed rest were selected for inclusion. Nine studies that investigated the implementation of a multimodal intervention that was inclusive of an early mobilisation protocol were also included. Results suggest that goal-directed early mobilisation, delivered using an evidence-based algorithm with a clear, procedure-specific inclusion and exclusion criteria, may reduce length of stay and complication rate. In addition, there is evidence to suggest improved performance-based and patient-reported outcomes when compared to bed rest following elective spinal surgery. Whilst this review reveals a lack of evidence to determine the exact details of which early mobilisation protocols are most effective, mobilisation on the day of surgery and ambulation from the first postoperative day is possible and should be the goal. Future work should aim to establish consensus-based, best practice guidelines on the optimal type and timing of mobilisation, and how this should be modified for different spinal procedures.

Do We Need Postoperative Chest Radiographs After Posterior Spinal Fusion for Adolescent Idiopathic Scoliosis?

STUDY DESIGN

The question was addressed in three ways: (1) a query of Kids' Inpatient Database (KID) to obtain nationally representative data; (2) retrospective review of cases at a single institution; (3) survey of Scoliosis Research Society (SRS) spine surgeons.

OBJECTIVES

Evaluate the rate of immediate postoperative pulmonary complications, risk factors, and relevant surgeon practice patterns, to determine the usefulness of routine postoperative chest radiographs after posterior spinal instrumentation and fusion (PSIF) for adolescent idiopathic scoliosis (AIS).

SUMMARY OF BACKGROUND DATA

Routine postoperative chest radiography after PSIF for AIS is performed in many institutions to evaluate for acute pulmonary complications, particularly pneumothorax (PTX). The incidence of pneumothorax and its effect on management is unknown.

METHODS

The frequency of PTX and surgical intervention were recorded. We evaluated associations between PTX and patient demographics or comorbidities, as well as survey respondent demographics and their practice patterns.

RESULTS

In the KID data sets, the risk of PTX after PSIF for AIS patients was 0.3% (30/9,036), with intervention required in 13.3% (4/30) of PTX-positive patients (0.04% of all cases). Review of cases at our institution revealed a PTX rate of 3.3% (8/244) by radiology report. No surgical intervention was required. Patients with PTX had, on average, an increased number of vertebrae fused (p = .012), a proximal thoracic scoliosis curve location (p = .009), and/or an intraoperative blood transfusion (p = .002). SRS respondents reported a PTX risk of 0.8% (87/11,318), and 32.2% (89/276) of respondents indicated routine use of postoperative chest radiographs. Of those, 46.1% (41/89) specified willingness to change practice patterns if provided evidence of low PTX rates.

CONCLUSIONS

Pneumothorax is uncommon after PSIF for AIS. The need for intervention is even less common. Routine postoperative chest radiographs are of questionable value after PSIF for AIS.

LEVEL OF EVIDENCE

Level III.

Predictors of a Non-home Discharge Destination Following Spinal Fusion for Adolescent Idiopathic Scoliosis (AIS)

STUDY DESIGN

Retrospective cohort study.

OBJECTIVE

Analyze risk factors associated with a non-home discharge following spinal fusions in adolescent idiopathic scoliosis (AIS).

SUMMARY OF BACKGROUND DATA

Current evidence is limited with regard to which patient-level and provider/hospital-level factors predict a non-home discharge disposition following spinal fusions in AIS. Identifying these factors can allow providers to identify which patients would ultimately require facility care and can be discharged early to these facilities to reduce hospital costs.

METHODS

The 2012 to 2016 American College of Surgeons-National Surgical Quality Improvement Program Pediatric database was queried using Current Procedural Terminology codes for posterior spinal fusions (22800, 22802, and 22804) and anterior spinal fusions (22808, 22810, and 22812). Patients were categorized into those receiving a posterior-only fusion, anterior-only fusion, and combined anterior-posterior fusion. Only patients aged 10 to 18 undergoing corrective surgery for idiopathic scoliosis were included in the study.

RESULTS

Out of a total of 8452 patients-90 (1.1%) were discharged to a destination other than home (skilled-care facility, separate acute care unit, and/or rehabilitation unit). Following multivariate analysis, children with a body mass index of 20 to 30 (P = 0.002) or >30 (P = 0.003), structural pulmonary abnormality (P = 0.030), past history of childhood cancer (P = 0.018), an ASA grade >II (P<0.001), undergoing a revision surgery versus a primary surgery (P = 0.039), a length of stay >4 days (P<0.001), and the occurrence of a predischarge complication (P = 0.003) were independent predictors associated with a non-home discharge disposition.

CONCLUSION

In the current era of evolving health-care in which there is an increased focus toward decreasing costs, providers should consider utilizing these data to preoperatively identify patients who can be discharged to facility, and tailor an appropriate postoperative course of care aimed at expediting discharge processes to curb the financial burden of a prolonged length of stay.

LEVEL OF EVIDENCE

3.

Improving Complex Pediatric and Adult Spine Care While Embracing the Value Equation

INTRODUCTION

Value in health care is defined as the quotient of outcomes to cost. Both pediatric and adult spinal deformity surgeries are among the most expensive procedures offered today. With high variability in both outcomes and costs in spine surgery today, surgeons will be expected to consider long-term cost effectiveness when comparing treatment options.

METHODS

We summarize various methods by which value can be increased in complex spine surgery, both through the improvement of outcomes and the reduction of cost. These methods center around standardization, team-based and collaborative approaches, rigorous outcomes tracking through dashboards and registries, and continuous process improvement.

RESULTS

This manuscript reviews the expert opinion of leading spine specialists on the improvement of safety, quality and improvement of value of pediatric and adult spinal surgery.

CONCLUSION

Without surgeon leadership in this arena, suboptimal solutions may result from the isolated intervention of regulatory bodies or payer groups. The cooperative development of standardized, team-based approaches in complex spine surgery will lead to the high-quality, high-value care for patients.

A National Analysis on Predictors of Discharge to Rehabilitation After Corrective Surgery for Adolescent Idiopathic Scoliosis

STUDY DESIGN

Retrospective study of a national database.

OBJECTIVE

To identify the incidence and risk factors for discharge to a rehabilitation facility after corrective surgery for adolescent idiopathic scoliosis (AIS).

SUMMARY OF BACKGROUND DATA

The vast majority of patients who undergo surgery for AIS are discharged home, with limited data on rates and causes for discharge to a rehabilitation facility.

METHODS

The United States National Inpatient Sample (NIS) database was queried for the years 2012 to 2014. Inclusion criteria were children aged 10 to 18 who underwent surgery for idiopathic scoliosis. Studied data included patient demographics, operative parameters, length of stay, and hospital charges. Perioperative complications were also examined, along with their association with discharge to an inpatient rehabilitation facility. Statistical analysis was performed via chi-squared testing and multivariate analysis, with significance defined as a P-value <0.05.

RESULTS

A total of 17,275 patients were included (76.3% female, mean age 14 yr). Out of the entire cohort, 4.8% of patients developed a complication and 0.6% were discharged to a rehabilitation facility. The most common complications included respiratory failure (2.3%), reintubation (0.8%), and postoperative hematoma (0.8%). Following multivariate analysis, male sex (Odds ratio (OR) 4.7; 95% Confidence Interval (CI), 1.8-12.2; P = 0.002), revision surgery (OR 29.6; 95% CI, 5.7-153.5; P < 0.001), and development of a perioperative complication (OR 12.3; 95% CI, 4.7-32.4; P < 0.001) were found to be significant predictors of discharge to rehabilitation. Average length of stay was 8 ± 6 versus 5 ± 3 days and hospital charges were $254,425 versus $186,273 in the complication and control groups, respectively (both P < 0.001).

CONCLUSION

Discharge to rehabilitation after AIS surgery is uncommon. However, patients who are male, undergo revision procedures, or develop a complication may have a higher risk of a non-routine discharge. Complication occurrence also resulted in significantly longer lengths of stay and healthcare costs.

LEVEL OF EVIDENCE

3.

Patient engagement to enhance recovery for children undergoing surgery

For over 20 years enhanced recovery protocols (ERPs) have been used to decrease the physiologic stress and inflammation of surgery using evidence-based principles. ERPs include optimizing patient preparation, creating less trauma using minimally invasive anesthetic and surgical techniques, and regular audit of outcomes. A critical aspect of ERPs is patient engagement in all phases of care, which facilitates effective team function and focused oversight of patient flow through the system. Counseling extends beyond traditional review of surgical risks and benefits, by creating clear daily patient goals, establishing pain management plans, optimizing nutrition, and defining criteria for discharge. The patient and family are provided written and visual media resources to review. This counseling and education clearly outlines the bidirectional expectations, ensures preparedness, and empowers the patient and family by explaining the logic surrounding many of the ERP interventions. The patient and family are, in turn, activated as key stakeholders in the process and have a shared vision with the healthcare team. Most patients enjoy being considered partners and agents in their own healthcare. ERPs facilitate an optimal surgical experience that can improve patient satisfaction, outcomes, and value.