Patient Selection Bias Research Articles

Prospective cohort study of basivertebral nerve ablation for chronic low back pain in a real-world setting: 12 months follow-up

BackgroundThe basivertebral nerve, which densely supplies the vertebral endplates, is a potential source of chronic low back pain transmission in patients with Modic changes. Basivertebral nerve ablation (BVNA), a minimally invasive procedure, aims to disrupt this pain signaling. ObjectivesIn this study, we investigated BVNA's effectiveness in treatment of vertebrogenic low back pain and we followed patients for 12 months to assess long-term effectiveness. Study designSingle group prospective cohort study (ClinicalTrials.gov NCT05692440). SettingSingle-center, community private practice. MethodsThirty-five patients were treated with the INTRACEPT® device (Boston Scientific, MA, USA). Thirty-one patients completed Oswestry Disability Index (ODI), Visual Analog Scale (VAS), SF-36 Physical Component Summary (PCS), and SF-36 Mental Component Summary (MCS) at baseline and follow-up visits up to 12 months. ResultsThe average age of the 31 patients was 73.0 ± 6.34 years and 71.0 % of the population was male (N=22)) at baseline. All four self-reported outcomes (ODI, VAS, SF-36 PCS, and MCS) showed statistically and clinically significant improvements from baseline through 12 months (all p < 0.001, with the exception of the SF-36 MCS at 1 month, p = 0.165). Overall, 67.7 % of patients demonstrated ODI improvements above the minimal clinically important difference (decrease of at least 15 points) and 77.4 % of patients demonstrated a decrease on the VAS above the minimal clinically important difference (≥2 cm reduction) at 12 months. LimitationsLimitations of the study include the lack of a control group and potentially unintentional bias in patient selection. ConclusionsBVNA demonstrates potential as an effective and minimally invasive treatment for chronic low back pain in a real-world patient cohort where substantial improvements were observed. These results align with those seen in previous randomized controlled trials (RCTs) and industry-funded studies of BVNA.

Perioperative outcomes and hospitalization costs of radical vs. conservative surgery for hepatic cystic echinococcosis: A retrospective study.

Surgical intervention is a crucial treatment for hepatic cystic echinococcosis. However, the choice between radical and conservative surgery remains controversial. This study aimed to compare the perioperative outcomes and hospitalization costs between radical and conservative surgery for hepatic cystic echinococcosis. A retrospective cohort study was conducted on patients undergoing surgical treatment at the First People's Hospital of Kashi Prefecture from July 1, 2012, to October 1, 2023. Propensity score-matching analysis was utilized to mitigate patient selection bias between the two surgical groups. Of the 434 patients included, 324 underwent conservative surgery and 110 underwent radical surgery. After propensity score-matching, 182 conservative surgery and 102 radical surgery patients were compared. Radical surgery patients experienced longer operative time, higher intraoperative blood loss, increased blood transfusion, and higher costs compared to conservative surgery patients. However, no differences were observed in short-term outcomes, including overall morbidity, death, bile leak, effusion, pulmonary infection, incision infection, intestinal obstruction, ICU stay, abdominal drainage time, and postoperative hospital stays. This study suggests that radical surgery is associated with greater surgical complexity and higher hospitalization costs, while it doesn't offer a significant short-term advantage. Conservative surgery may be a viable option in resource-limited settings or for patients unsuitable for complex procedures. Further research with long-term follow-up is needed to determine the optimal approach.

Abstract 4136358: Diagnostic accuracy of Apple Watch Electrocardiogram for Atrial Fibrillation: A Systematic Review and Meta-Analysis

Background: Electrocardiography (ECG) stands as the gold standard for the evaluation of cardiac arrhythmias. Recent smartwatches aim to promptly detect rhythm abnormalities enhancing user experience. However, the accuracy of these devices remains controversial. Our purpose was to perform a systematic review and meta-analysis evaluating the diagnostic performance of the Apple Watch electrocardiogram in detecting atrial fibrillation (AF). Methods: The literature search was conducted on PubMed, Embase, and Cochrane through April, 2024 for studies comparing the diagnostic accuracy of Apple Watch to standard 12 Lead ECG. Statistical analysis was performed using R Software version 4.4.0. Pooled analyses of sensitivity, specificity, and area under the receiver operating characteristic curve (AUC) were determined along with their 95% confidence intervals (CI). The quality of studies was analyzed using the QUADAS-2 tool. Results: The meta-analysis included 11 studies comprising 13,490 participants. Their mean age was 62.56 ± 3.92 years and 28% of the population were females. The pooled sensitivity and specificity of Apple Watch for detecting AF was 94.8% (95% CI 91.7 - 96.8%) and 95% (95% CI 88.6 - 97.8%) respectively. The AUC was 0.96 (95% CI 0.92 - 0.97; Figure 1). Sensitivity analysis for heterogeneity revealed no significant change in values for sensitivity 94.8% (95% CI 91.7-96.8%) and specificity 94.9% (95% CI 88.6-97.8%). The studies had a low risk of bias in Index test and reference standard domains, but a high risk of bias in patient selection and Flow and timing domains. Conclusion: The Apple Watch ECG shows a high accuracy in detecting atrial fibrillation, providing a convenient and timely option for such patients.

Extended Monitoring for Transition to Oral Corticosteroids in Acute Severe Ulcerative Colitis May Be Unnecessarily Prolonging Length of Stay

BackgroundThere is no guideline regarding whether patients treated with intravenous corticosteroids for acute severe ulcerative colitis (ASUC) should be monitored in the hospital after transitioning to oral steroids. Our study aimed to: (1) compare rates of oral steroid transition failure and 30-day readmission between ASUC hospitalizations with extended inpatient monitoring compared to accelerated inpatient monitoring, and (2) identify predictors of oral steroid transition failure.MethodsA retrospective cohort study of ulcerative colitis (UC) related admissions at UCSF from 2014 to 2022 was conducted comparing rates of steroid transition failures in extended inpatient monitoring (≥ 24 h on oral steroids prior to discharge) to accelerated inpatient monitoring (< 24 h on oral steroids). Steroid transition failure was defined as worsening colitis activity with the need to return to IV steroids or undergo colectomy. Data analysis incorporated demographics, disease features, and treatment history.ResultsTransition failures from intravenous to oral corticosteroids occurred in 8% of all UC-related admissions. There was a significant difference in transition failure observed between the extended and accelerated monitoring groups, 13 vs 3% (p = 0.03), respectively, with 83.3% of total transition failures occurring within the extended monitoring group. The 30-day readmission rate was 6% in each group (p = 0.93). No significant predictors of transition failures were identified.ConclusionTransition failures from IV to oral steroids are uncommon in ASUC hospitalizations. Transition failures were more likely to occur with extended monitoring, suggesting potential predictors and/or patient selection bias within this group. Further studies are needed to investigate the parameters driving clinician decision-making regarding oral steroid transitioning.

REMIT: Reirradiation of diffuse midline glioma patients – a NOPHO feasibility study

Diffuse midline glioma (DMG) continues to be an aggressive brain stem cancer among children and young adults. It has a dismal prognosis with less than 10% of patients alive two years after diagnosis. Radiotherapy has been demonstrated to be effectful, albeit transient. Hence, radiotherapy is considered a cornerstone in the treatment. Reirradiation has, in retrospective studies, shown promising overall survival and palliative effect but no pan-European consensus for reirradiation exists. The REMIT (Reirradiation of diffuse Midline glioma paTients) protocol evaluates safety and the palliative efficacy of reirradiation of patients with DMG (clinicaltrials.gov NCT06093165). Patients included in the protocol will be followed with 1) performance status (Karnofsky or Lansky), 2) toxicity monitored with NCI Common Terminology Criteria for Adverse Events (CTCAE), 3) motor and functioning skill with PEDI-CAT (The Paediatric Evaluation of Disability Inventory) and 4) quantification of corticosteroid use. Furthermore, the impact on quality of life and well-being will be assessed qualitatively with interviews as well as with the Pediatric Quality of Life Inventory (PedsQl) Cancer Module questionnaire. The protocol also includes dose accumulation and contouring studies to assess standardization as well as a pre-screening log to address selection bias of patients. The safety and palliative efficacy of reirradiation in DMG will be prospectively evaluated, including qualitative patient reported outcomes, through the REMIT protocol. REMIT is planned to open for inclusion in 2024.

Causes and predictors of long-term mortality in patients referred to a cardiac rehabilitation program

Abstract Introduction Cardiac rehabilitation (CR) programs have proven to reduce short-term mortality in patients with ischemic heart disease (IHD) and hospitalization rates in patients with heart failure (HF) (1-3). However, there is insufficient evidence about long-term mortality (&amp;gt;24-36 months) for patients receiving treatments based on recent clinical practice recommendations. Purpose To assess the long-term prognosis and predictors of mortality in a heterogenous group of patients referred to cardiac rehabilitation, and to obtain a detailed overview of death causes. Methods An inferential analysis of consecutive patients referred for exercise-based CR at a single site between January 2016 and January 2021 was performed. Included subjects were classified attending to four indications for referral: IHD, HF, valvular heart disease (VHD) and cancer therapy-related cardiovascular toxicity (CTR-CVT). Patients who did not initiate the CR program or were referred for other indications were excluded. The primary endpoint was all cause death. The secondary endpoint was cardiovascular (CV) death. A survival analysis was performed using Kaplan Meier estimates for each referral indication and a Cox proportional hazards model was fitted to investigate mortality predictors. The initiation of the exercise program was considered the inclusion date, and patients were followed until they met the primary endpoint or censored by January 2024. Results A total of 1180 patients were included in the analysis (81% male, mean age 61 ± 11 years), with a median follow-up of 5.3 years. Most of the patients had been referred due to IHD (87%), while the proportion for HF, VHD, and CTR-CVT was 9.9%, 1.8% and 1.4%, respectively. Seventy-eight patients (6.6%) died during follow-up, with a Kaplan-Meier estimated survival of 94.5% at 5 years (95% CI 93.2%-95.9%). Nineteen patients (24.4%) died due to a cardiovascular event, mostly sudden cardiac death (47%). The predominant non-CV causes of death were infectious disease (36%) and cancer (34%). A multivariate Cox model analysis (Table 1) showed an increased risk of all cause death for patients referred due to HF (HR 2.95, 95% CI 1.33 - 6.55), VHD (HR 5.55, 95% CI 1.19 - 25.9) and CTR-CVT (22.47, 95% IC 7.32 - 68.95) when compared to IHD (Figure 1). Other significant predictors of mortality were LVEF &amp;lt;40%, male sex, age, diabetes, peripheral vascular disease, and multivessel coronary disease. Only LVEF &amp;lt;40%, VHD, CTR-CVT and peripheral vascular disease were independent predictors of CV death. Conclusion Patients who initiated an exercise-based CR program had a low risk of all cause death at 5 years. Indications for CR other than IHD were associated with higher mortality rates after adjusting for confounder variables, likely due to a selection bias of patients in advanced stages of the disease.Table 1.Cox models for all-cause deathFigure 1.KM plot for all-cause death

Robotic kidney transplant has superior outcomes compared to open kidney transplant: results of a propensity match analysis.

Several studies have demonstrated the feasibility of robotic kidney transplant (RKT) as a safe alternative to open kidney transplant (OKT). However, significant selection bias in RKT patient selection limits meaningful comparison between the two techniques. This is a single-center retrospective review of a prospectively maintained kidney transplant database (2021-2024). Outcomes after the first 50 "non-selected" RKTs are compared with a contemporary cohort of 100 OKTs after propensity score matching for age, gender, BMI and type of donation (living vs deceased). Data pertinent to recipient demographics, intraoperative parameters, and short-term post-operative outcomes were collected and compared. Both groups were well-matched for recipient age, gender, BMI, and donation type. RKT group had significantly longer total operative time (RKT 258min vs. OKT 183min; p < 0.0001) and warm ischemia time (RKT 37min vs. OKT 31min; p < 0.0001) but significantly less blood loss (OKT 155ml vs. RKT 93ml). Average length of hospital stay for both groups was 5days, with OKT group demonstrating significantly higher rates of post-operative complications (OKT 31% vs. RKT 14%; p = 0.028), return to OR (OKT 15% vs. RKT 2%; p = 0.021), hematoma (OKT 13% vs. RKT 2%; p = 0.0355), and lymphocele (OKT 25% vs. RKT 6%; p = 0.0039). OKT group also had higher 30-day readmission rate (OKT 31% vs. RKT 14%) and post-operative opioid requirement (OKT 93 MME vs. RKT 65; p = 0.0254). There were no differences in rates of wound infection, urine leaks, delayed graft function, acute rejection, graft loss, and patient death between the two groups. RKT is a safe and viable alternative to OKT as a first-choice procedure for all patients with ESRD. RKT offers many advantages over OKT which can lead to its wider adoption in the coming years as the new standard of care for ESRD patients.

Impact of early palliative care referral in patients with locally advanced and metastatic GI/lung cancer.

201 Background: Early palliative care improves quality of life and survival in patients with metastatic NSCLC. As a result, ASCO recommends early palliative care integration in patients with metastatic cancer. However, generalizing the benefits outside of a clinical trial may be difficult due to selection bias of patients that opt into palliative care due to advanced symptom burden and real-world resource constraints. Therefore, the benefits of this in real-world practice may not be realized. We aimed to evaluate early vs late palliative care referral impact on unplanned hospital visits and survival among GI and lung cancer patients at a large health system cancer center. Methods: The study design was a retrospective, single health system, review of patients treated at Orlando Health from 2021-2022.156 patients of all stage GI and Lung cancers were included. For these patients, early referral was defined as receiving a palliative referral within 8 weeks of cancer diagnosis. Any referral later than this was considered late and it was possible for patients to opt out of referral. Our main outcomes were unplanned hospital visits and survival. To compare the rates of these between palliative care referral groups, a multivariable negative binomial regression model was fitted. To assess any differences in survival, a multivariable cox hazard regression model was fitted. These were adjusted for age, sex, diagnosis, stage, ECOG, race, and insurance. Results: Patients with any palliative care referral had increased unplanned hospital visits and shorter survival than patients who did not have referrals. Specifically, patients with no palliative care referrals had a 62% lower relative rate of unplanned hospital visits compared to patients with early referral (RR = 0.38 [0.22-0.66], p&lt;0.001). And patients with any time referral had approximately 8 months lower restricted mean survival times (RMST) when followed for 2 years for stage 1-3 cancers than patients receiving no palliative care (14 vs 22 month RMST; stage x palliative care interaction, p &lt;0.05). In contrast, stage 4 patients had similar survival of ~14-month RMST when followed for 2 years regardless of referral. Conclusions: In real world practice palliative care referral was associated with increased unplanned hospital visits. Additionally, in this retrospective review, palliative care referral was not found to confer a survival advantage in gastrointestinal and Lung cancer patients. We postulate that this is related to selection bias in the opt in approach to palliative care referral biasing towards a sicker population with higher symptom burden and comorbidities. Our future prospective study will build upon this work through expansion of palliative care services and to better evaluate patient co-morbidities. Our goal is to increase utilization of palliative care for patients with GI and lung malignancies as part of a multidisciplinary integrative approach.

ANÁLISE COMPARATIVA ENTRE A EFICÁCIA DIAGNÓSTICA DA RADIOGRAFIA E ULTRASSONOGRAFIA EM PACIENTES COM PNEUMOTÓRAX

INTRODUCTION: Pneumothorax is a serious medical condition, caused by the presence of air in the pleural cavity, which can lead to serious complications and even be fatal if not treated quickly. Chest radiography is the traditional diagnostic method, but it has limitations, and in this context, ultrasound has stood out as a promising alternative for the diagnosis of pneumothorax, having high sensitivity and specificity in some contexts. OBJECTIVES: This article aims to compare the diagnostic accuracy of ultrasound and chest radiography in the emergency department. METHODOLOGY: We carried out a broad search in several academic databases, using several Health Sciences Descriptors. The objective was to retrospectively compare the diagnostic accuracy of pneumothorax between radiography and ultrasound performed by non-radiologists in emergency patients. RESULTS: This study analyzed the effectiveness of chest radiography and ultrasound in diagnosing pneumothorax. 10 studies were included, 9 of which used the patient as the unit of analysis, with 1170 patients, and 460 with confirmed traumatic pneumothorax. 80% of studies presented a high risk of bias in patient selection. There was heterogeneity in the sensitivity of chest radiography, indicating the influence of the size of the pneumothorax, clinical conditions, and imaging techniques. Ultrasonography showed greater sensitivity and specificity than radiography; however, the results highlight the importance of considering different clinical contexts when choosing the best imaging modality to diagnose pneumothorax in emergencies. CONCLUSION: Thoracic ultrasound performed by non-radiologists is more accurate in diagnosing pneumothorax in emergency room trauma patients than chest radiography. The results highlight the potential of ultrasound as an effective diagnostic tool, easily integrating into trauma care protocols. Its use in medical training programs can improve the speed and accuracy of diagnosing critical conditions such as pneumothorax. The routine use of ultrasound in trauma management can bring positive changes to clinical practice, offering faster and safer interventions to patients.

Population-based screening strategies for biliary atresia in the newborn: A systematic review and meta-analysis.

Newborn screening for biliary atresia (BA) may facilitate earlier diagnosis and intervention for improved clinical outcomes. We systematically reviewed the accuracy of population-based screening strategies for BA in the newborn using PRISMA-DTA guidelines. We included cohort or cross-sectional studies. The screening (index) tests included stool color card (SCC) and direct/conjugated bilirubin (DB/CB) and the reference standard was intraoperative cholangiogram. Meta-analysis was performed using random-effects logistic regression models. We included 15 studies (1,816,722 participants) that assessed 5 different population-based screening strategies. QUADAS-2 assessment revealed high risk of bias for patient selection in one study and uncertain risks for reference standard in multiple studies. High certainty evidence suggests that DB/CB assessed after birth had a summary sensitivity of 100% (95% CI 100,100) and specificity of 98.8% (98.8,98.9) (5 studies, 662141 participants). Moderate certainty evidence suggests that SCC screening at a month of age had summary sensitivity of 79.6% (95% CI 70.6, 86.4) and specificity of 99.9% (95% CI 99.9, 99.9) (7 studies, 996262 participants). DB/CB in the first few days of life has the best diagnostic accuracy for population screening for biliary atresia in the newborn. Future research should focus on cost-effectiveness and combinations of screening strategies.

Diagnostic accuracy of chest X-ray and CT using artificial intelligence for osteoporosis: systematic review and meta-analysis.

Artificial intelligence (AI)-based systems using chest images are potentially reliable for diagnosing osteoporosis. We performed a systematic review and meta-analysis to assess the diagnostic accuracy of chest X-ray and computed tomography (CT) scans using AI for osteoporosis in accordance with the diagnostic test accuracy guidelines. We included any type of study investigating the diagnostic accuracy of index test for osteoporosis. We searched MEDLINE, EMBASE, the Cochrane Central Register of Controlled Trials, and IEEE Xplore Digital Library on November 8, 2023. The main outcome measures were the sensitivity, specificity, and area under the receiver operating characteristic curve (AUC) for osteoporosis and osteopenia. We described forest plots for sensitivity, specificity, and AUC. The summary points were estimated from the bivariate random-effects models. We summarized the overall quality of evidence using the Grades of Recommendation, Assessment, Development, and Evaluation approach. Nine studies with 11,369 participants were included in this review. The pooled sensitivity, specificity, and AUC of chest X-rays for the diagnosis of osteoporosis were 0.83 (95% confidence interval [CI] 0.75, 0.89), 0.76 (95% CI 0.71, 0.80), and 0.86 (95% CI 0.83, 0.89), respectively (certainty of the evidence, low). The pooled sensitivity and specificity of chest CT for the diagnosis of osteoporosis and osteopenia were 0.83 (95% CI 0.69, 0.92) and 0.70 (95% CI 0.61, 0.77), respectively (certainty of the evidence, low and very low). This review suggests that chest X-ray with AI has a high sensitivity for the diagnosis of osteoporosis, highlighting its potential for opportunistic screening. However, the risk of bias of patient selection in most studies were high. More research with adequate participants' selection criteria for screening tool will be needed in the future.

Diagnostic Performance of ASL-MRI and FDG-PET in Frontotemporal Dementia: A Systematic Review and Meta-Analysis.

While the diagnosis of frontotemporal dementia (FTD) is based mostly on clinical features, [18F]-FDG PET has been investigated as a potential imaging golden standard in ambiguous cases, with arterial spin labeling (ASL) MRI gaining recent interest. The purpose of this study is to conduct a systematic review and meta-analysis on the diagnostic performance of ASL MRI in FTD patients and compare it to that of [18F]-FDG PET. A systematic search of PubMed, Scopus and EMBASE was conducted until March 13, 2024. Inclusion criteria were: original articles, patients with FTD and/or its variants, use of ASL MR perfusion imaging with or without [18F]-FDG PET, presence of sufficient diagnostic performance data. Exclusion criteria were: meeting abstracts, comments, summaries, protocols, letters and guidelines, longitudinal studies, overlapping cohorts. The quality of eligible studies was assessed using the Quality Assessment of Diagnostic Accuracy Studies-2. Pooled sensitivity, specificity, and diagnostic odds ratio (DOR) for [18F]-FDG PET and ASL MRI were calculated, and a summary receiver operating characteristic curve was plotted. Seven eligible studies were identified, which included a total of 102 FTD patients. Aside from some of the studies showing at worst an unclear risk of bias in patient selection, index test, flow and timing, all studies showed low risk of bias and applicability concerns in all categories. Data from 4 studies was included in our meta-analysis for ASL MRI and 3 studies for [18F]-FDG PET. Pooled sensitivity, specificity and DOR were 0.70 (95% CI: 0.59-0.79), 0.81 (95% CI: 0.71-0.88) and 8.00 (95% CI: 3.74-17.13) for ASL MRI, and 0.88 (95% CI: 0.71-0.96), 0.89 (95% CI: 0.43-0.99) and 47.18 (95% CI: 10.77-206.75) for [18F]-FDG PET. The number of studies was relatively small, with a small sample size. The studies used different scanning protocols as well as a mix of diagnostic metrics, all of which might have introduced heterogeneity in the data. While ASL MRI performed worse than [18F]-FDG PET in the diagnosis of FTD, it exhibited a decent diagnostic performance to justify its further investigation as a quicker and more convenient alternative. 3DPCASL, 3D pseudocontinuous ASL; AD, Alzheimer's disease; ASL, arterial spin labeling; AUC, area under the curve; CI, confidence interval; DOR, diagnostic odds ratio; FN, false negative; FP, false positive; FTD, frontotemporal dementia; LE, limbic encephalitis; NLR, negative likelihood ratio; PASL, pulsed ASL; PLD, post-label delay; PLR, positive likelihood ratio; PRISMA, PSP, progressive supranuclear palsy; Preferred Reporting Items for Systematic Reviews and Meta-Analysis; SROC, summary receiver operative characteristic; TN, true negative; TP, true positive; QUADAS-2, Quality Assessment of Diagnostic Accuracy Studies-2.

Utilization of Real-World Data to Facilitate Clinical Trials for Patients with Lymphoma

The future directions in leveraging real-world evidence (RWE) and real-world data (RWD) in the field of lymphoma, as compared to traditional experimental clinical trials, are poised to significantly impact research methodologies, treatment strategies, and patient care. Current methods of clinical trials involve a well-controlled design and patient selection bias. Integrating RWE and RWD with experimental clinical trials offers a multifaceted approach to understanding lymphoma and enhancing patient outcomes. In this review, we discuss how RWE has helped shape lymphoma clinical trials, and we compare and evaluate evidence obtained from real-world lymphoma studies/databases with that obtained from clinical trials. We also discuss methods for utilizing surrogate endpoints to facilitate clinical trials and expedite drug development. RWE can be leveraged to bridge the gap between data obtained from clinical trial populations and the broader patient population encountered in clinical practice, by highlighting differences in outcomes and the need for effective treatment strategies across diverse patient groups.

Retrospective Analysis of Efficacy and Toxicity of Stereotactic Body Radiotherapy and Surgical Resection of Adrenal Metastases from Solid Tumors.

This single-center retrospective study aimed to evaluate the efficacy and toxicity profiles of stereotactic body radiotherapy (SBRT) and surgical resection in patients with adrenal metastases originating from solid tumors. Patients with advanced tumor conditions or comorbidities typically received SBRT, whereas those considered physically fit underwent standard surgical treatment. Endpoints included local control (LC), progression free survival (PFS), overall survival (OS), and complication rates (CR). 41 patients with 48 adrenal metastases were included, with 27 (65.9%) patients receiving SBRT and 14 (34.1%) patients undergoing adrenalectomy. One- and two-year LC values were 100% for both periods after adrenalectomy, and 70.0% and 52.5% after SBRT (p = 0.001). PFS showed values of 40.2% and 32.1% at one and two years after adrenalectomy and of 10.6% for both periods after SBRT (p = 0.223). OS was 83.3% both one and two years after surgery and 67.0% and 40.2% after SBRT (p = 0.031). There was no statistically significant difference between the two groups regarding acute complications (p = 0.123). Despite potential confounders, adrenalectomy exhibited statistically significant superior LC and OS compared to SBRT in managing adrenal metastases, while both treatment methods displayed acceptable toxicity profiles. However, patient selection bias must be taken into account when directly comparing the two therapy modalities. Nevertheless, the study provides new and important results for the scientific and medical communities regarding oncological outcomes after SBRT or surgical resection of adrenal metastases.

Settlement Is at the End-Common Trauma Scores Require a Critical Reassessment Due to the Possible Dynamics of Traumatic Brain Injuries in Patients' Clinical Course.

Background: Scientific studies on severely injured patients commonly utilize the Abbreviated Injury Scale (AIS) and the Injury Severity Score (ISS) for injury assessment and to characterize trauma cohorts. However, due to potential deterioration (e.g., in the case of an increasing hemorrhage) during the clinical course, the assessment of injury severity in traumatic brain injury (TBI) can be challenging. Therefore, the aim of this study was to investigate whether and to what extent the worsening of TBI affects the AIS and ISS. Methods: We retrospectively evaluated 80 polytrauma patients admitted to the trauma room of our level I trauma center with computed-tomography-confirmed TBI. The initial AIS, ISS, and Trauma and Injury Severity Score (TRISS) values were reevaluated after follow-up imaging. Results: A total of 37.5% of the patients showed a significant increase in AIShead (3.7 vs. 4.1; p = 0.002) and the ISS (22.9 vs. 26.7, p = 0.0497). These changes resulted in an eight percent reduction in their TRISS-predicted survival probability (74.82% vs. 66.25%, p = 0.1835). Conclusions: The dynamic nature of intracranial hemorrhage complicates accurate injury severity assessment using the AIS and ISS, necessitating consideration in clinical studies and registries to prevent systematic bias in patient selection and subsequent data analysis.

Impacts of DRG-Based Prepayment Reform on the Cost and Quality of Patients with Neurologic Disorders: Evidence from a Quasi-Experimental Analysis in Beijing, China.

As one of the pioneering pilot cities in China's extensive Diagnosis Related Groups (DRG) -based prepayment reform, Beijing is leading a comprehensive overhaul of the prepayment system, encompassing hospitals of varying affiliations and tiers. This systematic transformation is rooted in extensive patient group data, with the commencement of actual payments on March 15, 2022. This study aims to evaluate the effectiveness of DRG payment reform by examining how it affects the cost, volume, and utilization of care for patients with neurological disorders. Utilizing the exogenous shock resulting from the implementation of the DRG-based prepayment system, we adopted the Difference-in-Differences (DID) approach to discern changes in outcome variables among DRG payment cases, in comparison to control cases, both before and following the enactment of the DRG policy. The analytical dataset was derived from patients diagnosed with neurological disorders across all hospitals in Beijing that underwent the DRG-based prepayment reform. Strict data inclusion and exclusion criteria, including reasonableness tests, were applied, defining the pre-reform timeframe as March 15th through October 31st, 2021, and the post-reform timeframe as the corresponding period in 2022. The extensive dataset encompassed 53 hospitals and encompassed hundreds of thousands of cases. The implementation of DRG-based prepayment resulted in a substantial 12.6% decrease in total costs per case and a reduction of 0.96 days in length of stay. Additionally, the reform was correlated with significant reductions in overall in-hospital mortality and readmission rates. Surprisingly, the study unearthed unintended consequences, including a significant reduction in the proportion of inpatient cases classified as surgical patients and the Case Mix Index (CMI), indicating potential strategic adjustments by providers in response to the introduction of DRG payments. The DRG payment reform demonstrates substantial effects in restraining cost escalation and enhancing quality. Nevertheless, caution must be exercised to mitigate potential issues such as patient selection bias and upcoding.

Internal and external adenomyosis phenotypes: ultrasound features and association with clinical outcomes.

What are the sonographic and clinical findings in women diagnosed with external and internal adenomyosis by ultrasound? Patients with external and internal adenomyosis phenotypes, diagnosed by ultrasound, present differences in sonographic features of the disease and demographic characteristics including age, parity, and association with deep endometriosis (DE) and leiomyomas. Two different phenotypes of adenomyosis have been described based on the anatomical location of adenomyotic lesions in the myometrium, suggesting that adenomyosis affecting the inner myometrium and that affecting the external myometrial layer may have distinct origins. A cross-sectional study including 505 patients with a sonographic diagnosis of adenomyosis was performed between January 2021 and December 2022. Women sonographically diagnosed with adenomyosis in a tertiary referral hospital that serves as a national reference center for endometriosis were included over a 2-year period. Patients were divided into two groups (internal and external adenomyosis) according to the myometrial layer affected by adenomyosis. We compared sonographic and clinical outcomes including a multivariate analysis between the two groups. According to ultrasound findings, 353 (69.9%) patients presented with internal adenomyosis, while 152 (30.1%) presented with external adenomyosis. Women with internal adenomyosis were significantly older and less frequently nulliparous compared to those with external adenomyosis. Sonographically, internal adenomyosis appeared diffusely, it had a greater number of adenomyosis features, it presented a globular morphology of the uterus more frequently, and it coexisted with leiomyomas more frequently, compared to external adenomyosis. Conversely, the presence of translesional vascularity and associated DE were more common among the external adenomyosis group. No significant differences were found between internal and external adenomyosis groups regarding pain, heavy menstrual bleeding, spotting, or infertility. In the multivariate analysis, nulliparity, the presence of leiomyomas, and the presence of DE were independently associated with adenomyosis phenotypes (the presence of DE and nulliparity increased the risk of external adenomyosis, whereas the presence of leiomyomas was a risk factor for internal adenomyosis). Considering the impact of hormonal treatment, we found that the number of ultrasound adenomyosis criteria was significantly greater in patients without hormonal treatment. Non-treated patients more commonly presented dysmenorrhea or bleeding-associated pain and heavy menstrual bleeding than women on hormonal treatment, although there were no significant differences according to adenomyosis phenotypes. As the population was selected from the Endometriosis Unit of a tertiary center, there may be patient selection bias, given the high prevalence of individuals with associated endometriosis, previous endometriosis-related surgery, and/or receiving hormonal treatment. Transvaginal ultrasound is the most available and cost-effective tool for the diagnosis of adenomyosis. Adenomyosis phenotypes based on ultrasound findings may be key in achieving an accurate diagnosis and in decision-making regarding the most adequate therapeutic strategy for the management of patients with adenomyosis. Determination of the sonographic features associated with symptoms could help in the evaluation of treatment response. No funding was obtained for this study and there are no conflicts of interest to declare. N/A.

MRI and SPECT/CT demonstrate, with low certainty of evidence, the highest diagnostic accuracy for aseptic knee arthroplasty loosening: A systematic comparative diagnostic test review and meta-analysis.

The purpose of this study was to evaluate and compare the diagnostic accuracy of modalities used to aid the diagnosis of aseptic knee arthroplasty loosening. A comparative diagnostic test accuracy systematic review and meta-analysis was conducted following the Cochrane and PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. PubMed, EMBASEand Cochrane databases were searched for original articles evaluating diagnostic modalities up to March 2024. Included studies compared the modality (index test) to the intraoperative finding as reference test. The QUADAS-C (Quality Assessment of Diagnostic Accuracy Studies-Comparative)tool was used to assess the quality of the included studies. The GRADE (Grading of Recommendations, Assessment, Development and Evaluation) approach was used to evaluate the certainty of evidence. Level of evidence was evaluated using the Oxford Levels of Evidence tool. The primary outcome wasthe summary of diagnostic accuracy metrics for each modality as demonstrated by a summary receiver-operating characteristic (SROC) curve. The search yielded 467 articles. Of these, 14 articles were included. These 14 articles evaluated a total of five different diagnostic modalities: bone scintigraphy (three studies, 146 cases), 18-fluorodeoxyglucose positron emission tomography(two studies, 50 cases), single-photon emission computed tomography combined with computed tomography (SPECT/CT) (seven studies, 371 cases), radionuclide arthrogram (three studies, 196 cases)and magnetic resonance imaging (MRI) (one study, 116 cases). Nine studies exhibited a high risk of bias in patient selection, and all studies showed a high risk of bias related to the reference test. The majority of the included studies were classified as Level III evidence, leading to an overall low level of certainty in the evidence. The most accurate tests, as demonstrated by the SROC analysis, were MRI and SPECT/CT, with sensitivities ranging from 0.00 to 1.00 and 0.33 to 1.00 and specificities between 0.31-1.00 and 0.00-1.00, respectively. This review and meta-analysis evaluated available diagnostic modalities to aid the diagnosis of knee arthroplasty loosening and based on a low certainty of evidence suggests that MRI and SPECT/CT are currently the most accurate modalities available to aid the diagnosis of aseptic loosening of knee arthroplasty components. Level III.

Image-Guided Ablation of Renal Masses: Challenges to Produce High-Quality Evidence and Future Directions.

Image-guided ablation (IGA) is a rapidly developing field in interventional oncology. There is some evidence suggesting IGA's non-inferiority compared with partial or radical nephrectomy for the treatment of small renal masses (SRM). However, these are mostly limited to retrospective cohort studies. This review article outlines the evidence comparing IGA to partial nephrectomy by collating the different survival measures and evaluates the challenges of producing clinical trials and high-quality evidence. The main challenges are due to the heterogeneity of SRM, patient selection bias, unstandardized endpoint and outcomes, and the lack of global practice standards. Despite the evidence thus far demonstrating that IGA stands as a non-inferior treatment modality for SRMs, exhibiting favorable short- and long-term outcomes, further robust research is needed to integrate ablation techniques into routine clinical practice with a multidisciplinary approach. There is emerging evidence that suggests randomized controlled trial in SRMs is possible, and technologies such as histotripsy as well as artificial intelligence are used in IGA.

A decade of experience with minimally invasive anti-reflux operations: robot vs. LESS.

The increasing use of robotic systems for anti-reflux operations prompted this study to evaluate and compare the efficacy of robotic and Laparo-Endoscopic Single-Site (LESS) approaches. From 2012, 228 robotic fundoplication and 518 LESS fundoplication patients were prospectively followed, analyzing perioperative metrics. Data are presented as median (mean ± SD); significance at p ≤ 0.05. Patients undergoing a robotic vs. LESS fundoplication were 67 (64 ± 13.7) vs. 61 (59 ± 15.1) years-old with BMIs of 25 (25 ± 3.2) vs. 26 (25 ± 3.9) kg/m2 (p = 0.001 and 1.00, respectively). 72% of patients who underwent the robotic approach had a previous abdominal operation(s) vs 44% who underwent the LESS approach (p = 0.0001). 38% vs. 8% had a re-operative fundoplication (p = 0.0001), 59% vs. 45% had a type IV hiatal hernia (p = 0.0004). Operative duration was 160 (176 ± 76.7) vs. 130 (135 ± 50.5) min (p = 0.0001). There were 0 (robotic) vs. 5 (LESS) conversions to a different approach (p = 0.33). 5 Patients vs. 3 patients experienced postoperative complications (p = 0.06), and length of stay (LOS) was 1 (2 ± 2.6) vs. 1 (1 ± 3.2) days (p = 0.0001). Patient symptomatic dysphagia preoperatively for the robotic vs. LESS approach was scored as 2 (2.4 ± 1.9) vs. 1 (1.9 ± 1.6). Postoperatively, symptomatic dysphagia was scored as 1 (1.5 ± 1.6) vs. 1 (1.7 ± 1.7). The change in these scores was - 1 (- 1 ± 2.2) vs. 0 (- 0.5 ± 2.2) (p = 0.004). Despite longer operative times and LOS in older patients, the robotic approach is efficient in undertaking very difficult operations, including patients with type IV or recurrent hiatal hernias. Furthermore, preoperative anti-reflux operations were more likely to be undertaken with the robotic approach than the LESS approach. The patient's postoperative symptomatic dysphagia improved relatively more than after the LESS approach. The vast majority of patients who underwent the LESS approach enjoyed improved cosmesis, thus, making LESS a stronger candidate for more routine operations. Despite patient selection bias, the robotic and LESS approaches to anti-reflux operations are safe, efficacious, and should be situationally utilized.