Nonroutine Discharge Research Articles

The relationship between neighborhood socioeconomic status and short-term outcomes following colon resection

BackgroundThis study investigates the association between neighborhood socioeconomic status, measured by the Distressed Communities Index (DCI), and short-term outcomes following colon resection. MethodsUtilizing the Maryland State Inpatient Sample database (SID 2018–2020), we determined the association between DCI and post-op outcomes following colon resection including length of stay, readmissions, 30-day in-hospital mortality, and non-routine discharges. Multivariate regression analysis was performed to control for potential confounding factors. ResultsOf the 13,839 patients studied, median age was 63, with 54.3 ​% female and 64.5 ​% elective admissions. Laparoscopic surgery was performed in 36.9 ​% cases, with a median hospital stay of 5 days. Patients in distressed communities faced higher risks of emergency admission (OR: 1.31), prolonged hospitalization (OR: 1.29), non-routine discharges (OR: 1.36), and readmission (OR: 1.33). Black patients had longer stays than White patients (OR: 1.3). Despite adjustments, in-hospital mortality did not significantly differ among neighborhoods. ConclusionOur study reveals that patients residing in distressed neighborhoods face a higher risk of prolonged hospitalization, non-routine discharges, and readmission rate after colon resection.

Impact of Depression on Postoperative Medical and Surgical Outcomes in Spine Surgeries: A Systematic Review and Meta-Analysis.

Introduction: The relationship between psychiatric disorders, including depression, and invasive interventions has been a topic of debate in recent literature. While these conditions can impact the quality of life and subjective perceptions of surgical outcomes, the literature lacks consensus regarding the association between depression and objective perioperative medical and surgical complications, especially in the neurosurgical domain. Methods: MEDLINE (PubMed), EMBASE, PsycINFO, and the Cochrane Library were queried in a comprehensive manner from inception until 10 November 2023, with no language restrictions, for citations investigating the association between depression and length of hospitalization, medical and surgical complications, and objective postoperative outcomes including readmission, reoperation, and non-routine discharge in patients undergoing spine surgery. Results: A total of 26 articles were considered in this systematic review. Upon pooled analysis of the primary outcome, statistically significantly higher rates were observed for several complications, including delirium (OR:1.92), deep vein thrombosis (OR:3.72), fever (OR:6.34), hematoma formation (OR:4.7), hypotension (OR:4.32), pulmonary embolism (OR:3.79), neurological injury (OR:6.02), surgical site infection (OR:1.36), urinary retention (OR:4.63), and urinary tract infection (OR:1.72). While readmission (OR:1.35) and reoperation (OR:2.22) rates, as well as non-routine discharge (OR:1.72) rates, were significantly higher in depressed patients, hospitalization length was comparable to non-depressed controls. Conclusions: The results of this review emphasize the significant increase in complications and suboptimal outcomes noted in patients with depression undergoing spinal surgery. Although a direct causal relationship may not be established, addressing psychiatric aspects in patient care is crucial for providing comprehensive medical attention.

Association of carotid endarterectomy at low-volume centers with higher likelihood of major complications and nonroutine discharge.

Carotid artery stenosis (CAS) is associated with an annual stroke risk of 2%-5%, and revascularization with carotid endarterectomy (CEA) can reduce this risk. While studies have demonstrated that hospital CEA volume is associated with mortality and myocardial infarction, CEA volume cutoffs in studies are relatively arbitrary, and no specific analyses on broad complications and discharge disposition have been performed. In this study, the authors systematically set out to identify a cutoff at which CEA procedural volume was significantly associated with major complications and nonroutine discharge. Asymptomatic and symptomatic CAS patients undergoing CEA were retrospectively identified in the Nationwide Readmissions Database (2010-2018). The association of CEA volume with outcomes was explored as a continuous variable using locally estimated scatterplot smoothing. The identified volume cutoff was used to generate dichotomous volume cohorts, and multivariate analyses of patient and hospital characteristics were conducted to evaluate the association of CEA volume with major complications and discharge disposition. Between 2010 and 2018, 308,933 asymptomatic and 32,877 symptomatic patients underwent CEA. Analysis of CEA volume with outcomes as a continuous variable demonstrated that an increase in volume was associated with a lower risk until a volume of approximately 7 cases per year (20th percentile). A total of 6702 (2.2%) asymptomatic and 1040 (3.2%) symptomatic patients were treated at the bottom 20% of hospital procedure volume. Increased rates of complications were seen at low-volume centers among asymptomatic (3.66% vs 2.77%) and symptomatic (7.4% vs 6.87%) patients. Asymptomatic patients treated at low-volume centers had an increased likelihood of major complications (OR 1.26, 95% CI 1.07-1.49; p = 0.007) and nonroutine discharge (OR 1.36, 95% CI 1.24-1.50; p < 0.0001). Symptomatic patients treated at low-volume centers were also more likely to experience major complications (OR 1.47, 95% CI 1.07-2.02; p = 0.02) and nonroutine discharge (OR 1.26, 95% CI 1.07-1.47; p = 0.005). Mortality rates were similar between low- and high-volume hospitals among asymptomatic (0.36% and 0.32%, respectively) and symptomatic (1.06% and 1.49%, respectively) patients, while volume was not significantly associated with mortality among asymptomatic (OR 1.06, 95% CI 0.67-1.65; p = 0.81) and symptomatic (OR 0.81, 95% CI 0.43-1.54; p = 0.52) patients in multivariate analysis. CEA patients, asymptomatic or symptomatic, are at a higher risk of major complications and nonroutine discharge at low-volume centers. Analysis of CEA as a continuous variable demonstrated a cutoff at 7 cases per year, and further study may identify factors associated with improved outcome at the lowest-volume centers.

Examining barriers to care: a retrospective cohort analysis investigating the relationship between hospital volume and outcomes in pediatric patients with cerebral arteriovenous malformations.

Comprehensive data on treatment patterns of pediatric cerebral arteriovenous malformations (AVMs) are lacking. The authors' aim was to examine national trends, assess the effect of hospital volume on outcomes, and identify variables associated with treatment at high-volume centers. Pediatric AVM admissions (for ruptured and unruptured lesions) occurring in the US in 2016 and 2019 were identified using the Kids' Inpatient Database. Demographics, treatment methods, costs, and outcomes were recorded. The effect of hospital AVM volume on outcomes and factors associated with treatment at higher-volume hospitals were analyzed. Among 2752 AVM admissions identified, 730 (26.5%) patients underwent craniotomy, endovascular treatment, or a combination. High-volume (vs low-volume) centers saw lower proportions of Black (8.7% vs 12.9%, p < 0.001) and lowest-income quartile (20.7% vs 27.9%, p < 0.001) patients, but were more likely to provide endovascular intervention (19.5%) than low-volume institutions (13.7%) (p = 0.001). Patients treated at high-volume hospitals had insignificantly lower numbers of complications (mean 2.66 vs 4.17, p = 0.105) but significantly lower odds of nonroutine discharge (OR 0.18 [95% CI 0.06-0.53], p = 0.009) and death (OR 0.13 [95% CI 0.02-0.75], p = 0.023). Admissions at high-volume hospitals cost more than at low-volume hospitals, regardless of whether intervention was performed ($64,811 vs $48,677, p = 0.001) or not ($64,137 vs $33,779, p < 0.001). Multivariable analysis demonstrated that Hispanic children, patients who received AVM treatment, and those in higher-income quartiles had higher odds of treatment at high-volume hospitals. In this largest study of US pediatric cerebral AVM admissions to date, higher hospital volume correlated with several better outcomes, particularly when patients underwent intervention. Multivariable analysis demonstrated that higher income and Hispanic race were associated with treatment at high-volume centers, where endovascular care is more common. The findings highlight the fact that ensuring access to appropriate treatment of patients of all races and socioeconomic classes must be a focus.

Identifying clinically meaningful subgroups following open reduction and internal fixation for proximal humerus fractures: a risk stratification analysis for mortality and 30-day complications using machine learning

Identification of prognostic variables for poor outcomes following open reduction internal fixation (ORIF) of displaced proximal humerus fractures have been limited to singular, linear factors and subjective clinical intuition. Machine learning (ML) has the capability to objectively segregate patients based on various outcome metrics and reports the connectivity of variables resulting in the optimal outcome. Therefore, the purpose of this study was to (1) use unsupervised ML to stratify patients to high-risk and low-risk clusters based on postoperative events, (2) compare the ML clusters to the American Society of Anesthesiologists (ASA) classification for assessment of risk, and (3) determine the variables that were associated with high-risk patients after proximal humerus ORIF. The American College of Surgeons-National Surgical Quality Improvement Program database was retrospectively queried for patients undergoing ORIF for proximal humerus fractures between 2005 and 2018. Four unsupervised ML clustering algorithms were evaluated to partition subjects into "high-risk" and "low-risk" subgroups based on combinations of observed outcomes. Demographic, clinical, and treatment variables were compared between these groups using descriptive statistics. A supervised ML algorithm was generated to identify patients who were likely to be "high risk" and were compared to ASA classification. A game-theory-based explanation algorithm was used to illustrate predictors of "high-risk" status. Overall, 4670 patients were included, of which 202 were partitioned into the "high-risk" cluster, while the remaining (4468 patients) were partitioned into the "low-risk" cluster. Patients in the "high-risk" cluster demonstrated significantly increased rates of the following complications: 30-day mortality, 30-day readmission rates, 30-day reoperation rates, nonroutine discharge rates, length of stay, and rates of all surgical and medical complications assessed with the exception of urinary tract infection (P<.001). The best performing supervised machine learning algorithm for preoperatively identifying "high-risk" patients was the extreme-gradient boost (XGBoost), which achieved an area under the receiver operating characteristics curve of 76.8%, while ASA classification had an area under the receiver operating characteristics curve of 61.7%. Shapley values identified the following predictors of "high-risk" status: greater body mass index, increasing age, ASA class 3, increased operative time, male gender, diabetes, and smoking history. Unsupervised ML identified that "high-risk" patients have a higher risk of complications (8.9%) than "low-risk" groups (0.4%) with respect to 30-day complication rate. A supervised ML model selected greater body mass index, increasing age, ASA class 3, increased operative time, male gender, diabetes, and smoking history to effectively predict "high-risk" patients.

Outcomes of coronary artery bypass grafting (CABG) in patients with OSA-COPD overlap syndrome versus COPD alone: an analysis of US Nationwide Inpatient Sample.

Obstructive sleep apnea (OSA) and chronic obstructive pulmonary disease (COPD) are associated with unfavorable outcomes following coronary artery bypass grafting (CABG). The purpose of this study was to compare in-hospital outcomes of patients with COPD alone versus OSA-COPD overlap after CABG. Data of adults ≥ 18 years old with COPD who received elective CABG between 2005 and 2018 were extracted from the US Nationwide Inpatient Sample (NIS). Patients were divided into two groups: with OSA-COPD overlap and COPD alone. Propensity score matching (PSM) was employed to balance the between-group characteristics. Logistic and linear regression analyses determined the associations between study variables and inpatient outcomes. After PSM, data of 2,439 patients with OSA-COPD overlap and 9,756 with COPD alone were analyzed. After adjustment, OSA-COPD overlap was associated with a significantly increased risk of overall postoperative complications (adjusted odd ratio [aOR] = 1.12, 95% confidence interval [CI]: 95% CI: 1.01-1.24), respiratory failure/prolonged mechanical ventilation (aOR = 1.27, 95%CI: 1.14-1.41), and non-routine discharge (aOR = 1.16, 95%CI: 1.03-1.29), and AKI (aOR = 1.14, 95% CI: 1.00-1.29). Patients with OSA-COPD overlap had a lower risk of in-hospital mortality (adjusted odd ratio [aOR] = 0.53, 95% CI: 0.35-0.81) than those with COPD only. Pneumonia or postoperative atrial fibrillation (AF) risks were not significantly different between the 2 groups. Stratified analyses revealed that, compared to COPD alone, OSA-COPD overlap was associated with increased respiratory failure/prolonged mechanical ventilation risks among patients ≥ 60 years, and both obese and non-obese subgroups. In addition, OSA-COPD overlap was associated with increased risk of AKI among the older and obese subgroups. In US adults who undergo CABG, compared to COPD alone, those with OSA-COPD are at higher risks of non-routine discharge, AKI, and respiratory failure/prolonged mechanical ventilation, but a lower in-hospital mortality. No increased risk of AF was noted.

276 Outpatient Versus Inpatient Laminoplasty for Cervical Spondylosis: A Non-inferiority Analysis of Surgical Outcomes

INTRODUCTION: A rising trend of outpatient spinal procedures has been observed recently due to increasing evidence of lower risk of hospital-associated risks and better value-based healthcare delivery. METHODS: The American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database was queried for patients undergoing cervical laminoplasty for spinal spondylosis. Patients with a hospital stay of more than 48 hours were excluded from the comparative analysis to increase baseline comparability between the two groups. Patients undergoing other spinal procedures during the same hospital stay were also excluded. The outcomes of interest were postoperative complications, nonroutine discharge, readmissions, and reoperations within 30 days after surgery. The non-inferiority of outpatient compared with inpatient surgery was defined as a risk difference of &lt;10.0% at a one-sided 97.5% confidence interval. RESULTS: A total of 808 cervical laminoplasty surgeries were identified. The study cohorts consisted of 107 and 701 patients in outpatient and inpatient groups, respectively. All recorded baseline characteristics, except age (58.3 ± 10.6 vs. 61.4 ± 11.5, p=0.01), were similar between the two groups. The incidences of postoperative complications were 2.8% and 3.4% for the outpatient and inpatient groups, respectively, while the non-routine discharge rates were 6.5% and 3.5%. Both groups had a 30-day readmission rate of 3.7%. In addition, the 30-day reoperation rates were 2.8 % and 1.4% for the outpatient and inpatient groups, respectively. Noninferiority of outpatient surgery was documented at a risk difference of 10% for postoperative complications, non-routine discharge, and readmission and reoperation rates. CONCLUSIONS: Outpatient cervical laminoplasty demonstrated similar early postoperative outcomes compared to inpatient surgery. Noninferiority in surgical outcomes after surgery was documented for outpatient compared with inpatient cervical laminoplasty surgery.

167 Association Between Safety-net Hospital Status and Postoperative Outcomes Following ACDF or PCDF for Cervical Spondylotic Myelopathy

INTRODUCTION: Few prior studies have addressed the impact of safety-net hospital (SNH) status on outcomes following anterior cervical discectomy and fusion (ACDF) or posterior cervical decompression and fusion (PCDF) for cervical spondylotic myelopathy (CSM). METHODS: A retrospective cohort study was performed using the 2016–2019 National Inpatient Sample Database. All adult patients (&gt;18 years old) undergoing elective ACDF or PCDF for CSM, identified using ICD-10-CM coding, were stratified into SNH and non-SNH (N-SNH) cohorts. Hospitals in the top quartile of Medicaid/uninsured patient admissions were defined as SNHs. Demographics, treating hospital characteristics, comorbidities, operative variables, adverse events (AEs), LOS, discharge disposition, and costs were assessed. Multivariate analyses were performed to identify independent predictors of prolonged LOS, non-routine discharge (NRD) disposition, and increased costs for ACDF and PCDF. RESULTS: Of the 49,945 study patients, 34,195 (68.5%) underwent ACDF and 15,750 (31.5%) underwent PCDF. Within the ACDF cohort, 8,025 patients (23.5%) were treated at SNHs. Among patients undergoing PCDF, 4,120 (26.2%) were treated at SNHs. Patients treated at SNHs were more likely to be Black- or Hispanic-identifying and have incomes in the bottom quartile in both cohorts. Mean LOS was significantly greater in the SNH cohorts for both procedures (ACDF:N-SNH: 2.43 ± 3.12 days vs SNH: 2.94 ± 4.13 days, p &lt;0.001; PCDF:N-SNH: 4.36 ± 4.28 days vs SNH: 5.41 ± 8.67 days, p = 0.002), as were mean costs (ACDF:N-SNH: $20,991 ± $12,126 vs SNH: $22,412 ± $15,302, p = 0.010; PCDF:N-SNH: $25,835 ± $16,812 vs SNH: $28,945 ± $29,166, p = 0.010). A significantly greater proportion of patients in the ACDF cohort treated at SNHs experienced NRDs (N-SNH: 10.9% vs SNH: 13.9%, p = 0.006). On multivariate analysis, SNH status was not significantly associated with extended LOS [ACDF: p = 0.097; PCDF: p = 0.158], NRD [ACDF: p = 0.288; PCDF: p = 0.246], or increased costs [ACDF: p = 0.664; PCDF: p = 0.593]. CONCLUSIONS: Our findings suggest SNH status may not significantly impact postoperative outcomes following ACDF and PCDF.

1076 3-Level ACDF Versus 3-Level Laminectomy and Fusion: Are There Differences in Outcomes? An Analysis of the QOD CSM Cohort

INTRODUCTION: Prior studies comparing anterior versus posterior approaches for multilevel cervical spondylotic myelopathy (CSM) are limited by the heterogeneity of levels operated. METHODS: The prospective QOD CSM cohort was queried for fusions across only three interspaces. Surgeries crossing the cervicothoracic junction were excluded. The cohort was divided into anterior cervical discectomy and fusion (ACDF) and posterior laminectomy-and-fusion. 24-month patient-reported outcomes were compared. RESULTS: Of 199 patients (123 ACDF, 76 posterior fusions), 24-month follow-up rates were similar (ACDF: 90.2% vs. 92.1%, p = 0.67). Preoperatively, ACDF were younger (60.8 ± 10.2 vs. 65.0 ± 10.3 yr, p &lt; 0.01), used more private insurance (56.1% vs. 36.8%, p = 0.02), were more often employed (39.8% vs. 22.8%, p = 0.04), and independently ambulatory (14.6% vs. 31.6%, p &lt; 0.01). Otherwise, the cohorts had equivalent baseline mJOA, NDI, NRS Arm-Pain, NRS Neck-Pain, and EQ-5D (p &gt; 0.05). ACDF had shorter hospitalizations (1.6 vs. 3.9 days, p &lt; 0.01) and less non-routine discharge (7.3% vs. 22.8%, p &lt; 0.01) but higher postoperative dysphagia (13.5% vs. 3.5%, p = 0.049). Both groups demonstrated improvements in all outcomes at 24 months (p &lt; 0.05). In multivariable analyses, ACDF was associated with the greatest 24-month NASS Satisfaction (NASS 1)(69.4% vs. 53.7%, OR = 2.44, p = 0.02). Otherwise, the cohorts shared similar 24-month patient-reported outcomes. There were no differences in 3-month readmission (4.1% ACDF vs. 3.9% posterior fusion, p = 0.97) and 24-month reoperation rate (13.5% ACDF vs. 18.6% posterior fusion, p = 0.36). CONCLUSIONS: In a cohort limited to 3-level surgeries, ACDF was associated with reduced blood loss, shorter lengths of hospitalization, and higher routine discharge rates; however, posterior cervical fusion resulted in less dysphagia. After controlling for confounders, the ACDF cohort had a significantly higher odds of maximum satisfaction. Patients should be counseled on the risks and benefits of each approach, given relatively comparable outcomes.

174 Developing Mixed-Effects Models to Optimize Prediction of Postoperative Outcomes in a Modern Sample of Over 450,000 Patients Undergoing Elective Cervical Spine Fusion Surgery

INTRODUCTION: Cervical spine decompression and fusion surgery is commonly used to treat degenerative cervical spine pathologies.However, there is a paucity of high-quality data defining the optimal comorbidity indices specifically in patients undergoing cervical spine fusion surgery. METHODS: Using data from 2016–2019, we queried the Nationwide Readmissions Database (NRD) to identify individuals who had received cervical spine fusion surgery. The Johns Hopkins Adjusted Clinical Groups (JHACG) frailty-defining indicator was used to assess patient frailty. To measure the level of comorbidity, Elixhauser Comorbidity Index (ECI) scores were queried. ROC curves were developed utilizing comorbidity indices as predictor variables for pertinent complications such as death, non-routine discharge, top-quartile cost, top-quartile length of stay (LOS), and one-year readmission. RESULTS: A total of 453,717 patients were eligible for analysis. Non-routine discharges occurred in 93,961 (20.7%) patients. The mean adjusted all-payer cost for the procedure was $22,573.14 ± $18,274.86 (Top Quartile: $26,775.80) and the mean LOS was 2.7 days ± 4.4 days (Top Quartile: 4.7 days). After surgery, there were 703 (0.15%) mortalities and 58,254 (12.8%) readmissions within one year post-operatively. Models using Frailty+ECI as the primary predictor consistently outperformed the ECI only model with statistically significant p-values, as determined by comparing respective AUCs, for most of the complications assessed. Cost and mortality were the only outcomes for which this was not the case, as Frailty outperformed both ECI and Frailty+ECI in cost (p &lt; 0.0001 for all) and Frailty+ECI preformed as well as ECI alone in mortality (p = 0.10). CONCLUSIONS: Our data suggests that Frailty+ECI may most accurately predict clinical outcomes in patients receiving cervical spine surgery. These models may be used to identify high risk populations and patients who may necessitate greater resource utilization.

The hospital frailty risk score independently predicts postoperative outcomes in meningioma patients

ObjectiveThe Hospital Frailty Risk Score (HFRS) is a recently developed tool that uses ICD-10 codes to measure patient frailty. However, the effectiveness of HFRS has not yet been assessed in meningioma patients specifically. The present study aimed to evaluate the effectiveness of HFRS in predicting surgical outcomes for patients with meningiomas. MethodsThis retrospective study utilized data from patients undergoing meningioma resection at a single institution (2017–2019). Data were obtained through a combination of automated data retrieval and manual chart review. Bivariate logistic regression was used to assess the prognostic ability of several frailty indices for predicting postoperative outcomes. Further, discrimination for each model was assessed using the area under the receiver operating characteristic curve (AUROC). Generalized linear models with gamma error distributions and a log-link function were used to model hospital length of stay (LOS), total charges, complications, and disposition. ResultsA total of 464 meningioma patients (mean age 58.20 years, 72.8 % female, 66.4 % white) were included. HFRS had a significantly greater AUROC when compared to ASA (p = 0.0074) for postoperative complications, and HFRS significantly outperformed ASA (p = 0.0021) and mFI-5 (p = 0.018) when predicting nonroutine discharge. On multivariate analysis, increasing HFRS scores were significantly and independently associated with greater LOS (p < 0.0001), higher hospital charges (p < 0.0001), higher odds of postoperative complications (OR = 1.05, p = 0.019), and nonroutine discharge (OR = 1.12, p < 0.0001). The HFRS was non-inferior compared to the mFI-5, CCI, ASA and mFI-11 in terms of model discrimination. ConclusionHFRS effectively predicts postoperative outcomes for meningiomas and outperforms other indices in predicting complications and nonroutine discharge. This novel index may be used to improve clinical decision-making and reduce adverse postoperative outcomes among meningioma patients.

Association of Malnutrition with Surgical and Hospital Outcomes after Spine Surgery for Spinal Metastases: A National Surgical Quality Improvement Program Study of 1613 Patients.

Background: Malnutrition is a common condition that may exacerbate many medical and surgical pathologies. However, few have studied the impact of malnutrition on surgical outcomes for patients undergoing surgery for metastatic disease of the spine. This study aims to evaluate the impact of malnutrition on perioperative complications and healthcare resource utilization following surgical treatment of spinal metastases. Methods: We conducted a retrospective cohort study using the 2011-2019 American College of Surgeons National Surgical Quality Improvement Program database. Adult patients with spinal metastases who underwent laminectomy, corpectomy, or posterior fusion for extradural spinal metastases were identified using the CPT, ICD-9-CM, and ICD-10-CM codes. The study population was divided into two cohorts: Nourished (preoperative serum albumin values ≥ 3.5 g/dL) and Malnourished (preoperative serum albumin values < 3.5 g/dL). We assessed patient demographics, comorbidities, intraoperative variables, postoperative adverse events (AEs), hospital LOS, discharge disposition, readmission, and reoperation. Multivariate logistic regression analyses were performed to identify the factors associated with a prolonged length of stay (LOS), AEs, non-routine discharge (NRD), and unplanned readmission. Results: Of the 1613 patients identified, 26.0% were Malnourished. Compared to Nourished patients, Malnourished patients were significantly more likely to be African American and have a lower BMI, but the age and sex were similar between the cohorts. The baseline comorbidity burden was significantly higher in the Malnourished cohort compared to the Nourished cohort. Compared to Nourished patients, Malnourished patients experienced significantly higher rates of one or more AEs (Nourished: 19.8% vs. Malnourished: 27.6%, p = 0.004) and serious AEs (Nourished: 15.2% vs. Malnourished: 22.6%, p < 0.001). Upon multivariate regression analysis, malnutrition was found to be an independent and associated with an extended LOS [aRR: 3.49, CI (1.97, 5.02), p < 0.001], NRD [saturated aOR: 1.76, CI (1.34, 2.32), p < 0.001], and unplanned readmission [saturated aOR: 1.42, CI (1.04, 1.95), p = 0.028]. Conclusions: Our study suggests that malnutrition increases the risk of postoperative complication, prolonged hospitalizations, non-routine discharges, and unplanned hospital readmissions. Further studies are necessary to identify the protocols that pre- and postoperatively optimize malnourished patients undergoing spinal surgery for metastatic spinal disease.

Preoperative patient-reported physical health-related quality of life predicts short-term postoperative outcomes in brain tumor patients.

Patient-reported outcome measures (PROMs) are increasingly used to assess patients' perioperative health. The PROM Information System 29 (PROMIS-29) is a well-validated global health assessment instrument for patient physical health, though its utility in cranial neurosurgery is unclear. To investigate the utility of preoperative PROMIS-29 physical health (PH) summary scores in predicting postoperative outcomes in brain tumor patients. Adult brain tumor patients undergoing resection at a single institution (January 2018-December 2021) were identified and prospectively received PROMIS-29 surveys during pre-operative visits. PH summary scores were constructed and optimum prediction thresholds for length of stay (LOS), discharge disposition (DD), and 30-day readmission were approximated by finding the Youden index of the associated receiver operating characteristic curves. Bivariate analyses were used to study the distribution of low (z-score≤-1) versus high (z-score>-1) PH scores according to baseline characteristics. Logistic regression models quantified the association between preoperative PH summary scores and post-operative outcomes. A total of 157 brain tumor patients were identified (mean age 55.4±15.4 years; 58.0% female; mean PH score 45.5+10.5). Outcomes included prolonged LOS (24.8%), non-routine discharge disposition (37.6%), and 30-day readmission (19.1%). On bivariate analysis, patients with low PH scores were significantly more likely to be diagnosed with a high-grade tumor (69.6% vs 38.85%, p=0.010) and less likely to have elective surgery (34.8% vs 70.9%, p=0.002). Low PH score was associated with prolonged LOS (26.1% vs 22%, p<0.001), nonroutine discharge (73.9% vs 31.3%, p<0.001) and 30-day readmission (43.5% vs 14.9%, p=0.003). In multivariate analysis, low PH scores predicted greater LOS (odds ratio [OR]=6.09, p=0.003), nonroutine discharge (OR=4.25, p=0.020), and 30-day readmission (OR=3.93, p=0.020). The PROMIS-29 PH summary score predicts short-term postoperative outcomes in brain tumor patients and may be incorporated into prospective clinical workflows.

A contemporary analysis of surgical ligation versus endovascular embolization in patients with intracranial dural arteriovenous fistulas: a propensity score-matched and mixed-effects model study.

Intracranial dural arteriovenous fistulas (dAVFs) are rare vascular lesions that can be asymptomatic or can lead to devastating hemorrhage based on the dAVF's aggressiveness. Several approaches can be taken to treat dAVFs, such as endovascular embolization and surgical ligation. However, very few studies have evaluated the influence of surgery compared to endovascular approaches on patient outcomes. This study was performed to analyze the clinical characteristics and outcomes of patients who underwent treatment for intracranial dAVF in which either endovascular embolization or microsurgical ligation was used. The Nationwide Readmissions Database was reviewed for all patients who underwent treatment for dAVFs (n = 18,152) between 2016 and 2019. Patients who received only surgical ligation or endovascular embolization (i.e., not both) were included. Variables regarding demographics, clinical outcomes, and healthcare utilization were queried. Primary outcome measures were nonroutine discharge, 1-year readmission, top quartile length of stay (LOS), and top quartile of inpatient all-payer cost. Propensity score matching was performed to evaluate the influence of either surgery or embolization on patient outcomes. Receiver operating characteristic (ROC) curves were created for each outcome measure. The area under the curve (AUC) of each ROC was used to estimate mixed-effects model performance. Following propensity score matching, 127 and 113 patients made up the surgical ligation and endovascular embolization cohort, respectively. There were no differences found in age (p = 0.16), sex (p = 0.57), or average Elixhauser Comorbidity Index (p = 0.32). Patients receiving surgical ligation had lower odds of readmission (OR 0.37, p = 0.028) and greater odds of nonroutine discharge (OR 2.21, p = 0.03) compared to patients who underwent endovascular embolization. The authors found no differences in the top quartile of LOS (p = 0.84), top quartile of cost (p = 0.38), or mortality (p > 0.99) between cohorts. ROC curves revealed that the mixed-effects models inclusive of approach outperformed models agnostic to approach with respect to nonroutine discharge (AUC with approach, 0.871; AUC without approach, 0.850; p = 0.018) and readmission (AUC with approach, 0.686; AUC without approach, 0.651; p = 0.019), but no differences were observed regarding top quartile of LOS (p = 0.17) and top quartile of cost (p = 0.40). Surgical approach may influence perioperative outcomes in patients treated for intracranial dAVF-most significantly discharge disposition and 1-year readmission. Future longitudinal prospective studies with more clinical detail will be required to fully capture the predictive utility of surgical approach in patients treated for intracranial dAVF, particularly for various dAVF subtypes.

Impact of the pandemic and concomitant COVID-19 on the management and outcomes of middle cerebral artery strokes: a nationwide registry-based study

ObjectivesTo investigate the impact of the COVID-19 pandemic as well as concomitant COVID-19 itself on stroke care, focusing on middle cerebral artery (MCA) territory infarctions.DesignRegistry-based study.SettingWe used the National Inpatient...

Abstract WP31: Real World Comparison of Outcomes of IV Tenecteplase versus IV Alteplase for Acute Ischemic Stroke

Background: Tenecteplase (TNK) has been reported to be non-inferior to alteplase from a clinical outcome and safety standpoint according to recent studies. In our study, we compare the outcomes of IV TNK &amp; IV alteplase for acute ischemic stroke patients. Materials and Methods: We evaluated acute AIS patients treated with IVT between10/2020-03/2023 at theDepartment of Neurology, Hackensack MeridianHealth, JFKMedical Center. All analyses was done using SPSS version 29 software. Results: Among the total 270 patients, 150(55.6%) received IV alteplase and 120(44.4%) received IV TNK. Major neurological improvement (defined as improvement in NIHSS score by 8 or more points at 24hours) was observed with TNK. Any intracranial hemorrhage was higher among patients treated with IV TNK compared to alteplase (25% versus 14.7%, p=0.024). Symptomatic intracranial hemorrhage(sICH) was higher inTNK group (8.3% versus3.3%, p=0.075). The proportion of routine discharge was higher among alteplase patients, while non-routine discharge was higher among TNK patients (51.7% vs. 28%, p&lt;0.001). In the logistic regression analysis, patients treated with IV TNK were at a significantly higher risk of any intracranial hemorrhage(odds ratio[OR], 1.93, 95% confidence interval [CI]1.051-3.57, p=0.034). After adjusting for age, gender, NIHSS, thrombectomy, hypertension, diabetes, hyperlipidemia, CHF, previous TIA and previous stroke, there was anon-significant higher rate of intracranial hemorrhage. A nonsignificant decrease in the odds of symptomatic intracranial hemorrhage (sICH) was seen with TNK. There were significantly higher rates of non-routine discharge (OR, 3.078, 95% CI 1.8-5.19, p&lt;0.001) and death (OR, 4.84, 95% CI1.20-19.66, p=0.002) inpatients treated with IV TNK. After adjusting for the above-mentioned factors, there was a significantly higher rate of non-routine discharge in the TNK group and a higher trend of death in the TNK group. Conclusions: We found that IV TNK was associated with higher rates of intracranial hemorrhage compared to IV alteplase in patients with acute ischemic stroke.

The Hospital Frailty Risk Score Independently Predicts Postoperative Outcomes in Glioblastoma Patients

Background and ObjectiveThe Hospital Frailty Risk Score (HFRS) was recently introduced as a tool for quantifying patient frailty using ICD-10 codes. The utility of HFRS has not yet been evaluated. The objective of the study is to determine the utility of HFRS in predicting surgical outcomes following resection of GBM and compare its prognostic ability to other validated indices, such as the American Society of Anesthesiologists (ASA) physical status classification and Charlson Comorbidity Index (CCI). MethodsA retrospective analysis was conducted using a GBM patient database (2017 to 2019) at a single institution. HFRS was calculated using ICD-10 codes. Bivariate logistic regression was used to model the prognostic ability of each frailty index, and model discrimination was assessed using the area under the receiver operating characteristic curve (AUROC). Multivariate linear and logistic regression models were used to assess for significant associations between HFRS and continuous and binary postoperative outcomes, respectively. Results263 GBM patients were included in the study. HFRS had a significantly greater AUROC when compared to ASA (p=0.016) and CCI (p=0.037) for predicting 30-day readmission. On multivariate analysis, HFRS was significantly and independently associated with hospital length of stay (LOS) (p=0.0038), nonroutine discharge (p=0.018) and 30-day readmission (p=0.0051). ConclusionHFRS has utility in predicting postoperative outcomes for GBM patients and more effectively predicts 30-day readmission than other frailty indices. HFRS may be used as a tool for optimizing clinical decision-making to reduce adverse post-operative outcomes among GBM patients.

The Predictors of Incidental Durotomy in Patients Undergoing Pedicle Subtraction Osteotomy for the Correction of Adult Spinal Deformity.

Background: Pedicle subtraction osteotomy (PSO) is a powerful tool for sagittal plane correction in patients with rigid adult spinal deformity (ASD); however, it is associated with high intraoperative blood loss and the increased risk of durotomy. The objective of the present study was to identify intraoperative techniques and baseline patient factors capable of predicting intraoperative durotomy. Methods: A tri-institutional database was retrospectively queried for all patients who underwent PSO for ASD. Data on baseline comorbidities, surgical history, surgeon characteristics and intraoperative maneuvers were gathered. PSO aggressiveness was defined as conventional (Schwab 3 PSO) or an extended PSO (Schwab type 4). The primary outcome of the study was the occurrence of durotomy intraoperatively. Univariable analyses were performed with Mann-Whitney U tests, Chi-squared analyses, and Fisher's exact tests. Statistical significance was defined by p < 0.05. Results: One hundred and sixteen patients were identified (mean age 61.9 ± 12.6 yr; 44.8% male), of whom 51 (44.0%) experienced intraoperative durotomy. There were no significant differences in baseline comorbidities between those who did and did not experience durotomy, with the exception that baseline weight and body mass index were higher in patients who did not suffer durotomy. Prior surgery (OR 2.73; 95% CI [1.13, 6.58]; p = 0.03) and, more specifically, prior decompression at the PSO level (OR 4.23; 95% CI [1.92, 9.34]; p < 0.001) was predictive of durotomy. A comparison of surgeon training showed no statistically significant difference in durotomy rate between fellowship and non-fellowship trained surgeons, or between orthopedic surgeons and neurosurgeons. The PSO level, PSO aggressiveness, the presence of stenosis at the PSO level, nor the surgical instrument used predicted the odds of durotomy occurrence. Those experiencing durotomy had similar hospitalization durations, rates of reoperation and rates of nonroutine discharge. Conclusions: In this large multisite series, a history of prior decompression at the PSO level was associated with a four-fold increase in intraoperative durotomy risk. Notably the use of extended (versus) standard PSO, surgical technique, nor baseline patient characteristics predicted durotomy. Durotomies occurred in 44% of patients and may prolong operative times. Additional prospective investigations are merited.

Which Pre-Operative, Modifiable Risk Factors are Most Predictive of Complications in orthopedic Upper Extremity Surgery?

Identification of modifiable comorbid conditions in the preoperative period is important in optimizing outcomes. We evaluate the association between such risk factors and postoperative outcomes after upper extremity surgery using a national database. The National Surgical Quality Improvement Program (NSQIP) 2006-2016 database was used to identify patients undergoing an upper extremity principle surgical procedure using CPT codes. Modifiable risk factors were defined as smoking status, use of alcohol, obesity, recent loss of >10% body weight, malnutrition, and anemia. Outcomes included discharge destination, major complications, bleeding complications, unplanned re-operation, sepsis, and prolonged length of stay. Chi square and multivariable logistic regressions were used to identify significant predictors of outcomes. Significance was defined as P<0.01. After applying exclusion criteria, 53,780 patients were included in the final analysis. Preoperative malnutrition was significantly associated with non-routine discharge (OR=4.75), major complications (OR=7.27), bleeding complications (OR=7.43), unplanned re-operation (OR=2.44), sepsis (OR=10.22), and prolonged length of stay (OR=5.27). Anemia was associated with non-routine discharge (OR=2.67), bleeding complications (OR=13.27), and prolonged length of stay (OR=3.26). In patients who had a weight loss of greater than 10%, there was an increase of non-routine discharge (OR=2.77), major complications (OR=2.93), and sepsis (OR=3.7). Smoking, alcohol use, and obesity were not associated with these complications. Behavioral risk factors (smoking, alcohol use, and obesity) were not associated with increased complication rates. Malnutrition, weight loss, and anemia were associated with an increase in postoperative complication rates in patients undergoing upper limb orthopaedic procedures and should be addressed prior to surgery, suggesting nutrition labs should be part of the initial blood work.

Influence of affective disorders on outcomes after suboccipital decompression for adult Chiari I malformation

IntroductionAffective disorders (AD) have been shown to influence patient outcomes and healthcare resource utilization across several pathologies, though this relationship has not been described in patients with Chiari I malformations (CM-I). The aim of this study was to determine the impact of comorbid AD on postoperative events and healthcare resource utilization in adults following suboccipital decompression for CM-I. MethodsA retrospective study was performed using the 2016–2019 National Inpatient Sample database. Adults who underwent suboccipital decompression for CM-I were identified using ICD-10-CM codes. Patients were stratified into two cohorts, those with AD and those without (No AD). Patient demographics, comorbidities, operative characteristics, perioperative adverse events (AEs), and healthcare resource utilization were assessed. Multivariate logistic regression analyses were used to identify independent predictors of prolonged length of stay (LOS), exorbitant admission costs, and non-routine discharge (NRD). ResultsA total of 3985 patients were identified, of which 2780 (69.8%) were in the No AD cohort and 1205 (30.2%) were in the AD cohort. Patient demographics were similar, except for a greater proportion of Female patients than the No AD cohort (p = 0.004). Prevalence of some comorbidities varied between cohorts, including obesity (p = 0.030), ADHD (p < 0.001), GERD (p < 0.001), smoking (p < 0.001), and chronic pulmonary disease (p < 0.001). The AD cohort had a greater proportion of patients with 1–2 (p < 0.001) or ≥ 3 comorbidities (p < 0.001) compared to the No AD cohort. A greater proportion of patients in the AD cohort presented with headache compared to the No AD cohort (p = 0.003). Incidence of syringomyelia was greater in the No AD cohort (p = 0.002). A greater proportion of patients in the No AD cohort underwent duraplasty only (without cervical laminectomy) compared to the AD cohort (p = 0.021). Healthcare resource utilization was similar between cohorts, with no significant differences in mean LOS (No AD: 3.78 ± 3.51 days vs. 3.68 ± 2.71 days, p = 0.659), NRD (No AD: 3.8% vs. AD: 5.4%, p = 0.260), or mean admission costs (No AD: $20,254 ± 14,023 vs. AD: $29,897 ± 22,586, p = 0.284). On multivariate analysis, AD was not independently associated with extended LOS [OR (95%CI): 1.09 (0.72–1.65), p = 0.669], increased hospital costs [OR (95%CI): 0.98 (0.63–1.52), p = 0.930], or NRD [OR (95%CI): 1.39 (0.65–2.96), p = 0.302]. ConclusionOur study suggests that the presence of an AD may not have as much of an impact on postoperative events and healthcare resource utilization in adult patients undergoing Chiari decompression. Additional studies may be warranted to identify other potential implications that AD may have in other aspects of healthcare in this patient population.