Adjacent-Segment Disease Following Spinal Arthroplasty.

Intuitively, the introduction of artificial discs into spinal surgery offered the promise of reducing the incidence of adjacent segment (AS) reoperation compared with fusion. Several early clinical studies reported nonstatistically significant differences in AS disease between total disc replacement and fusion. Given the relatively low rate of AS reoperation (∼1%-2% per year) following fusion, any appropriately powered study designed to demonstrate a statistically significant difference compared with arthroplasty would require thousands of patients and/or long-term follow-up (>5 years). Therefore, these differences only become apparent with large study size or meta-analyses and longer follow-up.

Adherence to Guidelines for Managing Severe Traumatic Brain Injury in Children.

Pediatric traumatic brain injury (TBI) protocols vary widely among institutions, despite the existence of published guidelines. This study seeks to identify significant differences in management of pediatric TBI across several institutions. Severe pediatric TBI protocols were collected from major US pediatric hospitals through direct communication with trauma staff. Of 24 institutions identified and contacted, 10 did not respond and 5 did not have a pediatric TBI protocol. Pediatric TBI protocols were successfully collected from 9 institutions. These 9 protocols were separated into treatment tiers analogous to those in the 2019 Society of Critical Care Medicine and World Federation of Pediatric Intensive and Critical Care Societies guidelines, and the intervention variables were identified and compared across the 9 institutions. First-line therapies were similar between institutions, including seizure prophylaxis, maintenance of normoglycemia and normothermia, and avoidance of hypoxia, hyponatremia, and hypotension. However, significant variation across institutions was found regarding timing of cerebrospinal fluid drainage, hyperventilation, and neuromuscular blockade. When included in institutional protocols, most therapies are in line with the 2019 guidelines, except for diversion of cerebrospinal fluid, hyperventilation, maintenance of cerebral perfusion pressure, and use of neuromuscular blocking agents. Although these variations may represent differences in style or preference, the optimal timing of these specific treatment variations should be studied to determine the impact of each protocol on clinical outcomes.

Rapid-sequence MRI for evaluation of pediatric traumatic brain injury: a systematic review.

OBJECTIVE: Rapid-sequence MRI (RSMRI) of the brain is a limited-sequence MRI protocol that eliminates ionizing radiation exposure and reduces imaging time. This systematic review sought to examine studies of clinical RSMRI use for pediatric traumatic brain injury (TBI) and to evaluate various RSMRI protocols used, including their reported accuracy as well as clinical and systems-based limitations to implementation. METHODS: PubMed, EMBASE, and Web of Science databases were searched, and clinical articles reporting the use of a limited brain MRI protocol in the setting of pediatric head trauma were identified. RESULTS: Of the 1639 articles initially identified and reviewed, 13 studies were included. An additional article that was in press at the time was provided by its authors. The average RSMRI study completion time was variable, spanning from 1 minute to 16 minutes. RSMRI with "blood-sensitive" sequences was more sensitive for detection of hemorrhage compared with head CT (HCT), but less sensitive for detection of skull fractures. Compared with standard MRI, RSMRI had decreased sensitivity for all evidence of trauma. CONCLUSIONS: Protocols and uses of RSMRI for pediatric TBI were variable among the included studies. While traumatic pathology missed by RSMRI, such as small hemorrhages and linear, nondisplaced skull fractures, was frequently described as clinically insignificant, in some cases these findings may be prognostically and/or forensically significant. Institutions should integrate RSMRI into pediatric TBI management judiciously, relying on clinical context and institutional capabilities.

Does communication between neurosurgeons and anesthesiologists improve preoperative efficiency?

BACKGROUND: Suboptimal communication can lead to preventable preoperative delays. In our study, we aimed to identify factors delaying surgery in the immediate preoperative period. Our outcomes of interest were the anesthesia release to incision time (RIT) and preoperative expectations of neurosurgery and anesthesia providers. Additionally, we introduced new communication goals prior to induction, to examine the impact on preoperative efficiency. METHODS: The study is a prospective cohort analysis evaluating communication in the immediate preoperative period. In 42 consecutive cranial neurosurgical cases, a questionnaire was given to neurosurgical and anesthesia providers, and their responses were recorded. Halfway through this study, a formal pre-induction checklist was implemented that included expected duration of surgery, expected blood loss, surgical positioning, and intraoperative medication requirements. RESULTS: Comparing the cohorts before and after implementing the checklist, no difference in release to incision time was observed. However, the difference in estimated procedure time was significantly decreased after implementation of the formal pre-induction checklist. Further, there was a trend towards better agreement in estimated blood loss, although results did not achieve statistical significance. These delays all demonstrated a statistically significant decrease after the new communication goals were executed. CONCLUSION: While no statistically significant change in release to incision time was uncovered during our study, there was evidence that communication between teams improved after implementation of the checklist. Additionally, we observed less discrepancy in estimated case length and blood loss, suggesting focused communication goals aligned expectations of the neurosurgical and anesthesia teams.

Impact of Surgical and Medical Treatment on Survival of Patients with Cerebral Aspergillosis: Systematic Review of the Literature.

OBJECTIVE: Cerebral aspergillosis carries a high mortality. Rapid diagnosis and treatment can increase survival, but symptoms and imaging findings are nonspecific. The literature on cerebral aspergillosis consists mostly of case reports and case series and lacks large-scale review of data. METHODS: We performed a review of the literature using PubMed in March 2019. We recorded the year of publication, age and sex of patients, neurosurgical involvement, the antifungals administered, use of intrathecal antifungals, and the outcome of patients. The relationships among variables were tested using bivariant statics and linear regression. RESULTS: A total of 324 studies met the eligibility criteria, and 198 studies including 248 patients were included. Surgical resection (odds ratio [OR], 0.45; 95% confidence interval [CI], 0.25-0.80; P < 0.01) and administration of voriconazole (OR, 0.32; 95% CI, 0.18-0.55; P < 0.001) or itraconazole (OR, 0.36; 95% CI, 0.16-0.72; P < 0.001) were shown to be significantly associated with survival. CONCLUSIONS: Given the significant survival benefits for patients who received voriconazole and surgical intervention, we suggest early antifungal medical treatment and resection.

Clinically Meaningful Improvement Following Cervical Spine Surgery: 30% Reduction Versus Absolute Point-change MCID Values.

STUDY DESIGN: Retrospective analysis of prospectively collected registry data. OBJECTIVE: The aim of this study was to compare the performance of 30% reduction to established absolute point-change values for measures of disability and pain in patients undergoing elective cervical spine surgery. SUMMARY OF BACKGROUND DATA: Recent studies recommend using a proportional change from baseline instead of an absolute point-change value to define minimum clinically important difference (MCID). METHODS: Analyses included 13,179 patients who underwent cervical spine surgery for degenerative disease between April 2013 and February 2018. Participants completed a baseline and 12-month follow-up assessment that included questionnaires to assess disability (Neck Disability Index [NDI]), neck and arm pain (Numeric Rating Scale [NRS-NP/AP], and satisfaction [NASS scale]). Participants were classified as met or not met 30% reduction from baseline in each of the respective measures. The 30% reduction in scores at 12 months was compared to a wide range of established absolute point-change MCID values using receiver-operating characteristic curves, area under the receiver-operating characteristic curve (AUROC), and logistic regression analyses. These analyses were conducted for the entire patient cohort, as well as for subgroups based on baseline severity and surgical approach. RESULTS: Thirty percent reduction in NDI and NRS-NP/AP scores predicted satisfaction with more accuracy than absolute point-change values for the total population and ACDF and posterior fusion procedures (P < 0.05). The largest AUROC differences, in favor of 30% reduction, were found for the lowest disability (ODI 0-20%: 16.8%) and bed-bound disability (ODI 81%-100%: 16.6%) categories. For pain, there was a 1.9% to 11% and 1.6% to 9.6% AUROC difference for no/mild neck and arm pain (NRS 0-4), respectively, in favor of a 30% reduction threshold. CONCLUSION: A 30% reduction from baseline is a valid method for determining MCID in disability and pain for patients undergoing cervical spine surgery.Level of Evidence: 3.

Outcomes After Decompressive Craniectomy for Ischemic Stroke: A Volumetric Analysis.

BACKGROUND: Decompressive hemicraniectomy (DHC) is a treatment of space-occupying hemispheric infarct. Current surgical guidelines use criteria of age <60 years and surgery within 48 hours of stroke onset. OBJECTIVE: The purpose of this study was to evaluate the neurologic outcome after DHC and evaluate the relationship of stroke volume and outcomes. METHODS: A retrospective review was performed of patients undergoing DHC for cerebral infarct from 2016 to 2019. Unfavorable outcome was defined as modified Rankin Scale (mRS) score >3. Patients with precraniectomy magnetic resonance imaging were selected as a subset for volumetric stroke volume analysis using RAPID software (iSchemaView, Redwood City, California), with stroke volume defined as apparent diffusion coefficient <620 on diffusion-weighted imaging. RESULTS: Fifty-two patients met the inclusion criteria. At 90 days, favorable outcome was achieved in 11 patients (21.2%), and 41 patients (78.8%) had unfavorable outcomes (15 [29%] died). Surgery after 48 hours, age >60 years, and multivessel distribution did not significantly affect 90-day mRS score (P = 0.091, 0.111, and 0.664, respectively). In volumetric subset analysis, 10 patients of 41 (31.3%) achieved favorable outcomes, and no patients with volume of infarct >280 mL had a favorable outcome. There was a trend of lower volumes associated with favorable outcomes, but this did not meet significance (favorable 207 ± 68.7 vs. unfavorable 262 ± 117.1; P = 0.163). CONCLUSIONS: Outcomes after DHC for malignant hemispheric infarct were not affected by current accepted guidelines. Volume of infarct may have an effect on outcome after DHC. Further research to aid in predicting which patients benefit from decompressive craniectomy is warranted.

A rapid pre-implementation evaluation to inform a family engagement navigator program during COVID-19.

BACKGROUND: Innovative models of family engagement and support are needed in the intensive care unit (ICU) during times of restricted visitation such as the COVID-19 pandemic. Limited understanding of the factors affecting the uptake and outcomes of different family support models hinders the implementation of best practices. We aimed to conduct a rapid pre-implementation evaluation of stakeholder-perceived facilitators and barriers to design implementation strategies to support a novel program using medical students to facilitate family-centered care in the ICU. METHODS: We conducted a 2-step process. In step 1, we gathered contextual data via interview-style open-ended questions sent to clinicians and navigator stakeholders via email. We used electronic data collection due to the physical distancing requirements, the need to prioritize brief data collection for respondent burden, and the need for rapid knowledge gain. A codebook based on the Consolidated Framework for Implementation Research (CFIR), an integrated framework from the field of implementation science, was used to analyze the findings. In step 2, a pilot of the intervention was implemented with 3 navigators over 2 weeks. Implementation strategies were developed to target barriers identified by the pre-implementation evaluation. RESULTS: Fourteen (70%) of the identified stakeholders responded to the survey. Ten constructs encompassing all five CFIR domains were present in responses as implementation influencers, with the Intervention domain most frequently represented. Through these results and operational feedback from navigators during the pilot period, stakeholders selected multiple implementation strategies: audit and provide feedback, develop educational materials, conduct ongoing training, promote adaptability, assess and redesign workflow, identify and prepare champions, and engage community resources. CONCLUSIONS: We demonstrated how a conceptually based pre-implementation program evaluation can be used to rapidly inform optimal implementation strategies. We report key factors to inform design and implementation strategies for a novel ICU family engagement navigator program that may be useful to others wishing to adopt similar programs.

Complications and Complication Avoidance With Cervical Total Disc Replacement.

Complications with cervical arthroplasty can be generalized to errors in patient selection or surgical technique. Patients with advanced spondylosis or osteophytic disease, severe facet arthropathy, osteoporosis, sagittal deformity, or preoperative instability are poor candidates for arthroplasty and are more prone to complications. Poor surgical technique can result in subsidence, expulsion, and kyphosis, and it can contribute to heterotopic ossification. Additionally, all of the inherent complications from an anterior cervical approach may occur with cervical artificial disc placement. This article will focus on the complications uniquely associated with cervical arthroplasty.

Measuring clinically relevant improvement after lumbar spine surgery: is it time for something new?

BACKGROUND CONTEXT: Minimum clinically important difference (MCID) for patient-reported outcome measures is commonly used to assess clinical improvement. However, recent literature suggests that an absolute point-change may not be an effective or reliable marker of response to treatment for patients with low or high baseline patient-reported outcome scores. The multitude of established MCIDs also makes it difficult to compare outcomes across studies and different spine surgery procedures. PURPOSE: To determine whether a 30% reduction from baseline in disability and pain is a valid method for determining clinical improvement after lumbar spine surgery. STUDY DESIGN: Retrospective analysis of prospective data from a national spine registry, the Quality Outcomes Database. PATIENT SAMPLE: There were 23,280 participants undergoing elective lumbar spine surgery for degenerative disease who completed a baseline and follow-up assessment at 12 months. OUTCOME MEASURES: Patient-reported disability (Oswestry Disability Index [ODI]), back and leg pain (11-point Numeric Rating Scale [NRS]), and satisfaction (NASS scale). METHODS: Patients completed baseline and a 12-month postoperative assessment to evaluate the outcomes of disability, pain, and satisfaction. The change in ODI and NRS pain scores was categorized as met (≥30%) or not met (<30%) percent reduction MCID. The 30% reduction from baseline was compared with a wide range of well-established absolute point-change MCID values. The relationship between 30% reduction and absolute change values and satisfaction were primarily compared using receiver operating characteristic (ROC) curves, area under the curve (AUROC), and logistic regression analyses. Analyses were conducted for overall scores and for disability and pain severity categories and by surgical procedure. RESULTS: Thirty percent reduction in ODI and back and leg pain predicted satisfaction with more accuracy than absolute point-change values for the total population and across all procedure categories (p<.001), except for when compared with the highest absolute point-change threshold for leg pain (3.5-point reduction). The largest AUROC differences, in favor of 30% reduction, were found for the lowest disability (ODI 0-20%: 21.8%) and bed-bound disability (ODI 81%-100%: 13.9%) categories. For pain, there was a 3.4%-12.4% and 1.3%-9.8% AUROC difference for no/mild back and leg pain (NRS 0-4), respectively, in favor of a 30% reduction threshold. CONCLUSIONS: A 30% reduction MCID either outperformed or was similar to absolute point-change MCID values. Results indicate that a 30% reduction (baseline to 12 months after surgery) in disability and pain is a valid method for determining clinically relevant improvement in a broad spine surgery population. Furthermore, a 30% reduction was most accurate for patients in the lowest and highest disability and lowest pain severity categories. A 30% reduction MCID allows for a standard cut-off for disability and pain that can be used to compare outcomes across various spine surgery procedures.

Impact of occupational characteristics on return to work for employed patients after elective lumbar spine surgery.

BACKGROUND CONTEXT: Low back pain has an immense impact on the US economy. A significant number of patients undergo surgical management in order to regain meaningful functionality in daily life and in the workplace. Return to work (RTW) is a key metric in surgical outcomes, as it has profound implications for both individual patients and the economy at large. PURPOSE: In this study, we investigated the factors associated with RTW in patients who achieved otherwise favorable outcomes after lumbar spine surgery. STUDY DESIGN/SETTING: This study retrospectively analyzes prospectively collected data from the lumbar module of national spine registry, the Quality Outcomes Database (QOD). PATIENT SAMPLE: The lumbar module of QOD includes patients undergoing lumbar surgery for primary stenosis, disc herniation, spondylolisthesis (Grade I) and symptomatic mechanical disc collapse or revision surgery for recurrent same-level disc herniation, pseudarthrosis, and adjacent segment disease. Exclusion criteria included age under 18 years and diagnoses of infection, tumor, or trauma as the cause of lumbar-related pain. OUTCOME MEASURES: The outcome of interest for this study was the return to work 12-month after surgery. METHODS: The lumbar module of QOD was queried for patients who were employed at the time of surgery. Good outcomes were defined as patients who had no adverse events (readmissions/complications), had achieved 30% improvement in Oswestry disability index (ODI) and were satisfied (NASS satisfaction) at 3-month post-surgery. Distinct multivariable logistic regression models were fitted with 12-month RTW as outcome for a. overall population and b. the patients with good outcomes. The variables included in the models were age, gender, race, insurance type, education level, occupation type, currently working/on-leave status, workers' compensation, ambulatory status, smoking status, anxiety, depression, symptom duration, number of spinal levels, diabetes, motor deficit, and preoperative back-pain, leg-pain and ODI score. RESULTS: Of the total 12,435 patients, 10,604 (85.3%) had successful RTW at 1-year postsurgery. Among patients who achieved good surgical outcomes, 605 (7%) failed to RTW. For both the overall and subgroup analysis, older patients had lower odds of RTW. Females had lower odds of RTW compared with males and patients with higher back pain and baseline ODI had lower odds of RTW. Patients with longer duration of symptoms, more physically demanding occupations, worker's compensation claim and those who had short-term disability leave at the time of surgery had lower odds of RTW independent of their good surgical outcomes. CONCLUSIONS: This study identifies certain risk factors for failure to RTW independent of surgical outcomes. Most of these risk factors are occupational; hence, involving the patient's employer in treatment process and setting realistic expectations may help improve the patients' work-related functionality.