Procedure Codes Research Articles

Cultural Transformation of the International Statistical Classification of Diseases and Related Health Problems' Guidelines Needed to Effectively Measure Well-Being.

A cultural transformation is underway at the Veterans Health Administration and other health care systems to address the well-being of the whole person and not just their disease states. A part of this evolution is to develop a measurement paradigm because the existing ones are generally disease-specific; however, the International Statistical Classification of Diseases and Related Health Problems (ICD)-10th Revision-Clinical Modification does include codes for social determinants of health (SDOH). The ICD coding system is an internationally recognized system to identify and classify diseases, injuries, health encounters, and inpatient procedures. Medical and social service providers, researchers, health information managers, public health and health care system professionals, policymakers, and coders use these codes to conduct surveillance, such as on the existence of diseases and their outcomes, health care utilization, and health care-associated adverse events, and for billing and claims reimbursement. The ICD coding system has been the backbone of health care systems' clinical documentation and coding practices on an international level since 1909. Clinical documentation and coding have an immense influence on what can be measured in medical records. The current ICD guidance needs to undergo a cultural transformation to have parity between codes for medical and nonmedical conditions, such as supporting the standard use of SDOH as primary diagnoses for outpatient encounters, expanding its list of SDOH codes, and incorporating a wellness perspective. Developing a measurement paradigm that assesses the well-being of the whole person must involve in tandem revising the ICD coding system to include this same perspective.

Chatbot Demonstrates Moderate Interrater Reliability in Billing for Hand Surgery Clinic Encounters.

Artificial intelligence offers opportunities to improve the burden of health care administrative tasks. Application of machine learning to coding and billing for clinic encounters may represent time- and cost-saving benefits with low risk to patient outcomes. Gemini, a publicly available large language model chatbot, was queried with 139 de-identified patient encounters from a single surgeon and asked to provide the Current Procedural Terminology code based on the criteria for different encounter types. Percent agreement and Cohen's kappa coefficient were calculated. Gemini demonstrated 68% agreement for all encounter types, with a kappa coefficient of 0.586 corresponding to moderate interrater reliability. Agreement was highest for postoperative encounters (n = 43) with 98% agreement and lowest for new encounters (n = 27) with 48% agreement. Gemini recommended billing levels greater than the surgeon's billing level 31 times and lower billing levels 10 times, with 4 wrong encounter type codes. A publicly available chatbot without specific programming for health care billing demonstrated moderate interrater reliability with a hand surgeon in billing clinic encounters. Future integration of artificial intelligence tools in physician workflow may improve the accuracy and speed of billing encounters and lower administrative costs.

Reoperations After Operatively and Non-Operatively Treated Periprosthetic Knee Fractures: A Nationwide Study on 1,931 Fractures After Primary Total Knee Arthroplasty.

Periprosthetic knee fracture (PPKF) following total knee arthroplasty (TKA) can be difficult to treat. A PPKF can be treated both operatively and non-operatively, and the treatment varies between fracture sites. This study aimed to assess the risk of reoperation according to the fracture site and treatment of the PPKF. This study is a nationwide cohort study using register data from 1997 to 2022. Cruciate-retaining or posterior-stabilized primary TKA were identified from the Danish Knee Arthroplasty Register (DKR). Subsequent PPKFs, fracture treatments, and later reoperations were identified through the International Classification of Diseases (ICD-10) diagnosis and procedure codes in the Danish National Patient Register. Additionally, indications for revision TKA (rTKA) in the DKR were used to identify PPKFs and the reason for reoperation. We included 1,931 PPKFs (1,494 femoral, 207 patellae, and 230 tibial) with an overall two-year reoperation risk of 20% (95% CI [confidence interval]: 18 to 23). Femoral PPKFs had a two-year reoperation risk of 16% (12 to 22) after non-operative treatment and 21% (18 to 24) after operative treatment. Patellar PPKFs had a two-year reoperation risk in five to 17 after non-operative treatment and 46% (30 to 69) after operative treatment. Tibial PPKFs had a two-year reoperation risk of 17% (11 to 27) after non-operative treatment, and 36% (25 to 53) after operative treatment. The overall two-year reoperation risk was 20% (18 to 23). Operative-treated PPKFs had a higher risk of reoperation across all fracture locations. The highest reoperation risk was found after operatively treated patella and tibial PPKFs (46 and 36%, respectively), and the lowest reoperation risk was found after non-operative treated patella PPKFs.

Risk factors for severe retinopathy of prematurity stratified by birth weight and gestational age in privately insured infants.

To evaluate risk factors associated with severe retinopathy of prematurity ROP (sROP) in two separate cohorts of infants. We performed a retrospective study of the Merative MarketScan Commercial Database between 2003 and 2022. Infants with ROP were stratified into two cohorts: group A (defined as infants with both birth weight [BW] <1000 g and gestational age [GA] <29 weeks) and group B (defined as infants with either BW ≥1000 g or GA ≥29 weeks). Infants with sROP were defined as those who received treatment for ROP. Outpatient and inpatient claims using International Classification of Diseases and Current Procedural Terminology codes were used to identify neonatal comorbidities. Multivariable logistic regression was used to calculate odds ratios (ORs) and 95% confidence intervals (CIs) for sROP requiring treatment with respect to various comorbidities. A total of 425 of 8,789 infants with ROP developed sROP (4.8%). We identified 2,726 infants in group A, of whom 387 (14.2%) required a procedure, and 6,063 in group B, of whom 38 (0.6%) required a procedure. In group A, intraventricular hemorrhage (OR = 1.38; 95% CI, 1.09-1.74) and patent ductus arteriosus ligation (OR = 1.65; 95% CI, 1.25-2.16) were the comorbidities that significantly increased the odds of sROP on multivariable analysis. In group B, infection (OR = 1.96; 95% CI, 1.01-3.80) was the only comorbidity that significantly increased the adjusted odds of sROP. Risk factors for sROP may differ between smaller and larger infants. Infection may serve as an important risk factor for ROP progression amongst larger infants due to its connection with poor postnatal growth.

Risk of Recurrent Prolapse by Extent of Mesh Excision Procedures: A Multicenter Study.

There is limited evidence guiding surgeons in how much mesh to resect when treating mesh complications. The aim of the study was to compare rates of recurrent prolapse after mesh excisional surgical procedures for prolapse mesh complications. This multicenter, retrospective cohort study included patients, identified by Current Procedural Terminology codes, who were treated surgically for prolapse mesh complications at 8 institutions between 2010 and 2019. Excisional surgical procedures were categorized as major (total vaginal, extravaginal, and total mesh excisions) or minor (partial vaginal excisions and mesh revisions). The primary outcome was prolapse recurrence 1 year after mesh excision surgery. Secondary outcomes included long-term prolapse recurrence. Prolapse recurrence was evaluated by Kaplan-Meier survival analysis and Cox proportional hazards regression. Two hundred sixty-one patients met inclusion criteria with 188 (72%) undergoing minor and 73 (28%) major excisions, with a median follow-up time of 1.0 years. Groups differed in parity, location of implant surgery, and number of vaginal compartments involved in excision. Within the first year, major excisions had a higher prolapse recurrence rate (8.7%) than minor excisions (2.9%), P < 0.05. Adjusting for mesh implant type, the hazard ratio for pelvic organ prolapse was 6.1 in the major compared to minor excision. In the entire study period, prolapse recurrence was 33.8% and did not differ between groups. Patients undergoing major excision surgical procedures may have higher rates of prolapse at 1 year compared to those undergoing minor excisions. However, in long-term follow-up, recurrence rates were not different. Our findings may aid surgeons in expectation setting prior to excisional procedures.

The application study of harmonization code in medical device adverse event reporting.

The reporting of adverse events in medical devices (MD) is a starting point of post-market surveillance and the most common source of initial safety signals. Because MD adverse events (AE) occur globally and involve high-profile international public health crises, international regulators implanted standard codes for MDAE reporting. This study aimed to assess the application of MDAE terminology and codes by providing examples of virtual events. An online survey was conducted among participants of the MD Training Program for Regulatory Authorities which provide International Medical Device Regulators Forum (IMDRF) adverse event terminology and codes, and six virtual MDAE cases. All 29 of the 72 participants were regulators. In all cases, most participants selected the broad (level 1) codes rather than the detailed (level 2 or level 3) codes. While responders selected a variety of codes for all annexes in case 1, over 50% of responders selected the intended codes in case 6. The codes for cause investigation were chosen more frequently than other annexes for device problem, components, and health effect. No differences were observed in code selection amongst different stakeholders. We identified the diversification in terminology and code selection for reporting MDAEs.

A multimodal fusion network based on a cross-attention mechanism for the classification of Parkinsonian tremor and essential tremor.

Parkinsonian tremor (PT) and Essential tremor (ET) exist as upper limb tremors in clinical practice. Notably, their types of trembling share similar presentations and overlapping frequencies. To enhance objectivity and efficiency in the diagnosis of these two diseases, there is a pressing need for more objective tremor classification procedures. This study proposes a novel multimodal fusion network based on a cross-attention mechanism (MFCA-Net) to automate the classification of upper limb tremors between PTs and ETs. To this end, 140 patients with PTs and ETs were recruited, and acceleration and surface electromyography (sEMG) signals were collected from the forearm during tremor episodes. To comprehensively capture the global and local features of input signals, a multiscale convolution in MFCA-Net was designed. Furthermore, the cross-attention mechanism was applied to fuse the features of the two input signals. The results demonstrate that the final classification accuracy exceeded 97.18% when MFCA-Net was used. Compared with the single acceleration signal and single sEMG signal inputs, the recognition accuracies increased by 18.91% and 10.04%, respectively. Therefore, the proposed MFCA-Net in this study serves as an objective and potential tool for assisting clinicians in the diagnosis of PT and ET patients.

Characteristics and In-Hospital Outcomes of Single-Vessel Coronary Disease Intervention: A Propensity-Matched Analysis of the National Inpatient Sample Database 2016–2020

Background/Objectives: Few studies have analyzed in-hospital complications and events following percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG) procedures for patients who underwent these interventions for single-vessel coronary artery disease (CAD). This study aims to compare the outcomes of PCI and CABG in such patients using a large propensity-matched real-world database based on procedural codes. Methods: Adult patients receiving PCI or CABG for single-vessel CAD were identified from the 2016–2020 National Inpatient Sample (NIS) database. Any cases targeting multi-vessel disease or employing a multi-treatment approach were excluded using appropriate procedural codes. Differences in events and complications from admission to discharge were studied between the two procedures (PCI vs. CABG) via logistic regression analysis. Results: After propensity matching with 273,380 patients in both groups, complication risks such as cardiac tamponade (aOR: 3.6 [3.27–3.96]), acute kidney injury (aOR: 1.53 [1.51–1.56]), cardiogenic shock (aOR: 1.38 [1.34–1.40]), procedural bleeding (aOR: 1.75 [1.67–1.83]), acute ischemic stroke (aOR: 1.89 [1.80–1.97]), and all-cause mortality (aOR: 1.05 [1.02–1.08]) were higher among CABG patients. No differences were observed for events of cardiac perforation (aOR: 0.92, [0.84–1.01]). Conclusions: In this large real-world propensity-matched analysis, CABG was associated with higher risks of multiple in-hospital complications and all-cause mortality compared to PCI following a single-vessel coronary intervention.

Survival models and longitudinal medical events for hospital readmission forecasting.

The rate of 30-day all-cause hospital readmissions can affect the funding a hospital receives. An accurate and reliable readmission prediction model could save money and increase quality-of-care. Few projects have explored formulating this task as a survival prediction problem, where models can exploit a real-valued time-to-readmission target. This paper demonstrates the effectiveness of a survival-inspired readmission model, especially when paired with a longitudinal patient representation that is agnostic to disease-cohort and predictive task. We forecast readmissions for a population-level cohort of 421,088 patients discharged in 2015 and 2016 from hospitals in Alberta, Canada. Clinical features and sequences of historical medical codes (calculated from at least four full years prior to discharge) from linked administrative sources serve as model inputs. We trained binary 30-day readmission models (XGBoost and a Deep Neural Network) and time-to-event readmission models (CoxPH and N-MTLR) with and without machine-learned medical knowledge at initialization, then compared against the popular LACE-based model using the AUROC score at 30 days (AUROC@30). Survival models are additionally evaluated using concordance, Integrated Brier, and L1-loss scores. All models that utilize sequence features markedly out-perform even the best models trained on only clinical features. Further, a time-to-event target improves predictive performance at 30 days, given the same model inputs and architecture. N-MTLR, using solely sequence inputs and initialized with pre-learned medical knowledge, achieves an average AUROC@30 of 0.8460 over five folds with a standard deviation of 0.003. All trained models match or out-perform the LACE baseline of 0.6587±0.003. Sequences of administrative medical codes contain rich predictive information for forecasting readmissions, and embedding medical knowledge a priori using machine learning provides readmission models an advantageous foundation for training. When combined with a model that can leverage a time-to-event target, excellent performance is possible on the 30-day all-cause readmission task using only administrative data.

BN O04 - Trends in the management of bile duct stones in the United Kingdom: Are we following the evidence?

Abstract Background Common bile duct stones (CBDS) are typically managed in two stages: Endoscopic Retrograde Cholangiopancreatography (ERCP) followed by laparoscopic cholecystectomy (LC). However, access to ERCP can be limited or require referral, has a high failure rate, often necessitates additional imaging, and may involve multiple procedures. Increasing evidence suggests that single-stage management, involving LC with intraoperative imaging and bile duct exploration when indicated, is cheaper, more effective, and reduces overall length of stay. British Society of Gastroenterology guidance states that it is a valid alternative to ERCP. This study aimed to determine whether clinical practice aligns with this evidence. Method National Health Service (NHS) Admitted Patient Care publications summarise Hospital Episode Statistics by financial year and are openly accessible. OPCS4 Procedure Codes were screened by two authors and categorised as “operative” or “endoscopic.” Codes detailing the management of CBDS or bile duct exploration were included, while ambiguous codes or those for non-stone indications were excluded. Data pertaining to these codes were extracted from the Admitted Patient Care publications for 2012 to 2022 and summarised in a Microsoft Excel spreadsheet. Trends were analysed using a Non-Seasonal Mann-Kendall Trend Test Results A total of 249,475 procedures for CBDS were performed over the ten-year period, with a mean patient age of 67. Annually, the total number of procedures increased from 21,365 to 27,668 (p=0.002). Endoscopic procedures increased from 19,716 to 25,976 (p=0.002), while operative procedures remained stable (1,649 to 1,692, p=0.431). Consequently, the proportion of endoscopic management rose from 92.3% to 93.9% (p&amp;lt;0.001). The mean age of patients undergoing operative procedures was ten years younger than those undergoing endoscopic procedures (57 vs. 67 years) Conclusion Despite evidence and guidance supporting single-stage procedures, there is a trend towards endoscopic management of CBDS in the UK. This may be due to operational pressures on the NHS, including the sequelae of the COVID-19 pandemic, or reflect challenges within hospital culture, skill mix, or equipment availability.

The Doctrine of Inherent Powers under the Sudanese Civil Procedure Code: Its Origin, Nature and Scope

Abstract This article delves into the doctrine of inherent powers within the Sudanese Civil Procedure Code, with a specific focus on its origin, nature and scope. It posits that this doctrine empowers the courts to undertake actions essential for fulfilling their duties and ensuring the pursuit of justice, even in instances where such powers are not explicitly granted to them under statutory provisions. Additionally, the article examines the potential advantages and disadvantages associated with inherent powers and contemplates whether their exercise might pose a threat to the rule of law. It also explores the arguments both in favour of and against the possibility of rule-making within the framework of these powers and the potential impact of such regulations on the administration of justice. The article asserts that while a court's inherent powers are indispensable for the efficient dispensation of justice, it is imperative that they are not wielded capriciously or arbitrarily. Instead, their exercise should be guided by the principles of equity and good conscience.

Abstract 4139199: Quantifying the Burden of High Polygenic Risk for Cardiometabolic Disease in a US-based Healthcare System Biobank

Background: Healthcare systems are increasingly collecting genotype data on patients. Polygenic risk scores (PRS), which quantify inherited risk of a given disease, have the potential to leverage this data to identify high risk individuals. While PRS for single traits have often been evaluated, the same data can be used to calculate PRSs across traits and evaluate the overall burden of high cardiometabolic polygenic risk using a single test. Methods: We examined the association of cardiometabolic PRS from the Polygenic Score Catalog among 236,393 All of Us (AoU) participants for 6 target traits of interest, using all available PRS for coronary artery disease (CAD; 57 PRS), atrial fibrillation (AF; 30 PRS), heart failure (HF; 9 PRS), type 2 diabetes mellitus (T2DM; 133 PRS), venous thromboembolism (VTE; 9 PRS), and thoracic aortic aneurysm (TAA; 2 PRS). PRSMix is a tool that incorporates information across several PRS for a given trait to improve prediction accuracy for a target population. We generated a PRSMix for each trait and externally benchmarked its performance against individual PRS in the Mass General Brigham Biobank (MGBB). Phenotypes were ascertained using hospital diagnosis and procedural codes. Logistic regression was performed, adjusting for age, sex, and the first 10 principal components of inferred genetic similarity. Results: Of the 53,306 genotyped MGBB participants, 55.6% are female, mean enrollment age is 53 ± 17 years. Each trait-specific PRSMix demonstrated generally stronger associations with the target trait compared to any individual contributing score. This included trait-specific PRSMix associations (OR/SD, [95%CI]) of 2.07 [1.99-2.15] for CAD, 1.88 [1.82-1.95] for AF, 1.47 [1.43-1.51] for HF, 2.07 [2.00-2.14] for T2DM, 1.43 [1.39-1.47] for VTE, and 1.40 [1.34-1.46] for TAA. Findings were consistent across inferred genetically similar ancestry groups, with stronger PRSMix associations for CAD detected in the EUR group (2.14 [2.05-2.22]) compared to the AFR group (1.43 [1.21-1.70]). Approximately 37% of people in MGBB have 3-fold greater risk of at least one cardiometabolic disease, with 22% at risk for CAD, 14% for T2DM, 13% for Afib, 3% for VTE, 2% for HF and &lt;1% for TAA. Conclusion: We developed PRSMix scores for cardiometabolic traits in AoU and validated them in MGBB. We identified 37% of biobank participants with at least 3-fold greater disease risk associated with high polygenic scores for at least one cardiometabolic outcome.

Medical arbitration court: status and perspectives

Abstract. More than forty years ago, medical courts, which are arbitration tribunals (arbitration) for resolving medical malpractice disputes, emerged in the United States, while they remain relatively little known in our country. The problem of the study is the legal nature of medical disputes, the object is medical arbitration as a medico-legal phenomenon, the subject is the effectiveness of arbitration in resolving medical disputes. The issue of arbitrability, i.e. the admissibility of arbitration of a dispute: arbitration clauses are often challenged on the grounds that a patient could not reasonably express his or her will due to a medical condition. Despite conceptual difficulties, medical arbitration has been actively developed in the US since the 1980s. Its proponents emphasise a number of advantages over conventional litigation: speeding up the process, compensating a wider range of patients, reducing attorney fees, and improving patient safety. Opponents see as disadvantages the insufficient professional level of arbitrators, simplification of proceedings and its reduction to compensation payments, lack of connection between the activities of medical courts and improvement of the quality of medical care, transformation into an administrative procedure, "privatisation" of arbitration by large corporations. Some countries (South Korea, Indonesia, Mexico) implement arbitration in their country, but its results are rather modest. In Russia, medical disputes are characterised by increased complexity due to certain legal conditions. Alternative dispute resolution procedures are practically not used, and medical arbitration is expressly prohibited by the Code of Civil Procedure.

Abstract 4140116: Adherence to Lipid Lowering Therapy among US Veterans with Atherosclerotic Cardiovascular Disease

Introduction/Background: US Veterans experience a high burden of cardiovascular disease (CVD). Improved adherence to lipid-lowering therapy (LLT) is strongly associated with reducing low-density lipoprotein cholesterol (LDL-C), which has the potential to reduce morbidity and mortality among Veterans with atherosclerotic cardiovascular disease (ASCVD). Goals/Aims: To describe adherence to statin and non-statin LLT among US Veterans with ASCVD. Methods/Approach: Using Veterans’ Health Administration (VHA) electronic health records from January 1, 2003, to December 31, 2019, we identified regular users of the VHA who were on at least one LLT within 12-months after ASCVD diagnosis. ASCVD diagnosis was identified using ICD9/10 and Current Procedural Terminology codes. Medication possession ratio (MPR) was calculated as the sum of days’ supply for all fills of a given LLT during 12-, 24-, and 36-month follow-up, divided by the number of days in the follow-up period. Medication adherence was defined as MPR ≥ 0.80. Results/Data (descriptive and inferential statistics): The total number of Veterans on an LLT within 12-months after ASCVD diagnosis was 2,194,684 [mean (SD) age=68 (10) years, 98% male, and 75% white race]. Overall proportion of patients who were adherent to LLT was 68%, 64%, and 62%, at 12-, 24-, and 36-months post ASCVD diagnosis, respectively (Table). Conclusion(s): Suboptimal adherence to LLT was observed in one third of US Veterans with ASCVD. Adherence rates were highest in the first 12 months post ASCVD diagnosis. Future studies are needed to understand factors contributing to low and declining LLT adherence over time among Veterans.

Abstract 4124457: Socioeconomic Deprivation is Associated with Readmission Within One Year After Atrial Fibrillation Ablation

Introduction: Gender and race have been shown to impact access and outcomes regarding rhythm control management such as atrial fibrillation (AF) ablation. We aimed to evaluate the role of the Area Deprivation Index (ADI), a validated metric that represents the social disadvantage of communities, to determine if socioeconomic disadvantage (SED) increases the risk of readmission within one year after AF ablation. Methods: Patients ages ≥18 were identified in the Healthcare Cost and Utilization Project State Ambulatory Surgery and Services Databases in New York and Florida from 2016-2019 with follow-up into 2020 into the inpatient setting. These states were chosen due to availability for linkage of the 2020 ADI. International Classification of Diseases 10 and Current Procedural Terminology codes for AF and AF ablation were used. The risk of readmission was assessed using multivariable Cox proportional hazards with covariates age, sex, race, insurance, Charlson Comorbidity Index (0 vs ≥ 1 comorbidity), and ADI quartiles. ADI is scored 1-100 with higher scores representing more disadvantage. Results: 14,078 patients met inclusion criteria. The readmission rate at one, three, and twelve months was 6.1%, 9.9%, and 20.9% respectively. The most common readmission diagnoses at twelve months were AF (22.8%), followed by symptoms such as chest pain, dyspnea, palpitations, and syncope (13%). In the adjusted model, older age, female sex, federal insurance, ≥ 1 Charlson comorbidity, and higher ADI had higher one-, three-, and twelve-month risks of readmission. Hispanic ethnicity had a higher risk of one month readmission. Conclusion: Readmission for AF after ablation is common at twelve months. Higher risk of readmission after AF ablation was observed with SED. Enhanced awareness and additional research regarding SED as a risk factor for readmission may help improve post-ablation AF outcomes and equitable access to cardiovascular care.

Identifying Hemolytic Disease of the Fetus and Newborn within a Large Integrated Health Care System.

This study aims to identify hemolytic disease of the fetus and newborn (HDFN) pregnancies using electronic health records (EHRs) from a large integrated health care system. A retrospective cohort study was performed among pregnant patients receiving obstetrical care at Kaiser Permanente Southern California health care system between January 1, 2008, and June 30, 2022. Using structured (diagnostic/procedural codes, medication, and laboratory records) and unstructured (clinical notes analyzed via natural language processing) data abstracted from EHRs, we extracted HDFN-specific "indicators" (maternal positive antibody test and abnormal antibody titer, maternal/infant HDFN diagnosis and blood transfusion, hydrops fetalis, infant intravenous immunoglobulin [IVIG] treatment, jaundice/phototherapy, and first administrated Rho[D] Immune Globulin) to identify potential HDFN pregnancies. Chart reviews and adjudication were then performed on select combinations of indicators for case ascertainment. HDFN due to ABO alloimmunization alone was excluded. The HDFN frequency and proportion of each combination were fully analyzed. Among the 464,711 eligible pregnancies, a total of 136 pregnancies were confirmed as HDFN pregnancies. The percentage of the HDFN-specific indicators ranged from 0.02% (infant IVIG treatment) to 34.53% (infant jaundice/phototherapy) among the eligible pregnancies, and 32.35% (infant IVIG treatment) to 100% (maternal positive antibody test) among the 136 confirmed HDFN pregnancies. Four combination groups of four indicators, four combination groups of five indicators, and the unique combination of six indicators showed 100% of HDFN pregnancies, while 80.88% of confirmed HDFN pregnancies had the indicator combination of maternal positive antibody test, maternal/infant HDFN diagnosis, and infant jaundice/phototherapy. We successfully identified HDFN pregnancies by leveraging a combination of medical indicators extracted from structured and unstructured data that may be used in future pharmacoepidemiologic studies. Traditional indicators (positive antibody test results, high titers, and clinical diagnosis codes) alone did not accurately identify HDFN pregnancies, highlighting an unmet need for improved practices in HDFN coding. · A case ascertainment method was developed to identify HDFN from structured and unstructured data.. · The method used in this study may be used in future pharmacoepidemiologic studies.. · The study highlighted an unmet need for improved practices in HDFN coding..

Abstract 4133324: Socioeconomic status, race, and ethnicity in management of pediatric SVT

Introduction: Electrophysiology study and ablation (EPS) is often the preferred approach to management of supraventricular tachycardia (SVT) and/or ventricular pre-excitation (WPW) in older children/adolescents. There are inequities in arrhythmia management in adults, and in other areas of pediatric cardiology, but little is known about disparities in management of SVT in children. Research question: Do racial/ethnic and socioeconomic inequities affect referral for EPS in patients with SVT and/or WPW? Methods: This retrospective observational study utilized the Pediatric Health Information System of 49 children’s hospitals’ administrative data from 2016-2022. We included patients with SVT or WPW seen in the emergency department, admitted for observation, or inpatient. We excluded patients with congenital heart disease. The outcome was having a procedure code for EPS. The childhood opportunity index (COI, scale 1-100) based on zip code was used to measure socioeconomic status (SES). Results: Among 37,818 patients with primary diagnosis of SVT (27620, 73%) or WPW (10198, 27%), 9840 (26%) underwent EPS (Table 1). COI was higher in patients who underwent EPS than those who did not (median 59 [IQR 34,82] vs 57 [IQR 30,81]). In addition, time from initial visit with diagnosis of SVT/WPW to EPS was longer in patients with lower COI (beta= -0.026, p=0.007). Black (21.2%), Hispanic (23.8%), and American Indian (19.8%) patients were less likely to undergo EPS than White (26.5%) and Asian (28.31%) patients and those with other (28.4%) or unknown/missing (35.7%) race (p&lt;0.001, Figure 1). In both subgroups of patients with SVT and WPW, EPS differed by race and COI, and higher COI predicted shorter time to EPS. Conclusions: In this hospital database of pediatric patients, we found disparities in use of EPS for the management of SVT and/or WPW. Patients of minoritized race/ethnicity and lower SES were less likely to undergo EPS.

Abstract 4135273: Frailty increases the risk of in-hospital mortality and post-procedural complications in patients undergoing Cardiac Implantable Electronic Devices placement

Background: Heart failure with reduced ejection fraction (HFrEF) often necessitates the use of cardiac implantable electronic devices (CIED) such as cardiac resynchronization therapy defibrillators (CRT-D) or implantable cardioverter-defibrillators (ICD). These devices are proven to reduce mortality, prevent hospitalizations, and improve symptoms and quality of life. Frailty, characterized by an age-associated decline in physiological reserve, significantly impacts outcomes in these patients. This study uses the Hospital Frailty Risk Score (HFRS) to assess the effect of frailty on mortality and post-procedural complications in HFrEF patients undergoing CIED implantation. Hypothesis: Frail patients with HFrEF have worse in-hospital outcomes after CIED placement Methods: We conducted a retrospective cohort study using the 2020 National Inpatient Sample database from the Healthcare Utilization Project. Our population included patients aged 18 years or older with HFrEF who underwent CRT-D or ICD placement, identified using ICD-10 procedure codes. The primary risk factor was frailty, classified by an HFRS score of ≥5 (frail) or &lt;5 (not frail). The primary outcome was in-hospital mortality, and the secondary outcome was the composite of post-procedural complications. Multivariate regression analysis was used to estimate the odds ratio. Results: Out of 24,809 patients who underwent ICD or CRT-D placement, 48.8% were frail. Non-Frail patients had lower mean age compared to Frail patients (66.2 vs 67.3 years old, p=0.003). In-hospital mortality was 1.1%, and 7% experienced post-procedural complications. In-hospital mortality was higher in frail patients compared to non-frail patients (2% vs 0.3%, p&lt;0.001). In the multivariate analysis, frail patients had higher odds of in-hospital mortality compared to the non-frail group subset (OR=5.97; 95% CI: 2.77-12.88, p&lt;0.001). Additionally, frailty was associated with higher odds of post-procedural complications (OR=1.28; 95% CI: 1.01-1.63, p&lt;0.001), increased length of stay (5 vs 11.6 days, p&lt;0.001), and total hospital charges (215,668 vs 324,474 , p&lt;0.001). Conclusion: Frailty significantly increases the risk of in-hospital mortality and post-procedural complications in HFrEF patients. This highlights the importance of considering frailty as part of a pre-procedural risk stratification assessment and tailoring management strategies to improve outcomes for these high-risk patients.

Abstract 4144555: Atrial Fibrillation Catheter Ablation among Patients with Mediastinal Radiation; Insight from The National Inpatient Database (2015-2020)

Introduction/Background: Radiation therapy (RT) is one of the most common treatment modalities for mediastinal cancers. RT has multiple adverse cardiovascular effects and it has been identified as an independent risk factor for atrial fibrillation (AF). The efficacy of catheter ablation in AF is well established, however there is limited data on procedural safety and outcomes in patients with mediastinal cancers and history of radiation Methods: The National Inpatient Sample (NIS) was analyzed from 2015-2020 to identify admissions for AF catheter ablation among patients with previous history of mediastinal radiation exposure using the 10-PCS (International Classification of Diseases, procedure coding system) codes. Baseline characteristics were compared between the two groups and multivariate logistic regression was used to analyze hospitalization outcomes. Results: We identified 257,240 admissions for AF catheter ablation of which 1720 patients (0.67%) had a history of mediastinal radiation exposure. In the adjusted analysis, the odds of in-hospital mortality (aOR 0.639, 95% CI 0.34-1.20, p 0.1637), major complications (aOR 0.876, 95% CI 0.73-1.05, p 0.1443), any gastrointestinal or hematological complication (aOR 0.853, 95% CI 0.63-1.15, p 0.3017), renal complications (aOR 1.017, 95% CI 0.88-1.18, p 0.0509) were similar in both cohorts. The odds of any cardiovascular complication (aOR 0.825, 95% CI 0.70-0.97, p 0.0208) was lower and odds of any pulmonary complication (aOR 1.433, 95% CI 1.27-1.62, p&lt;.001) was higher in the mediastinal radiation cohort. Conclusion: AF catheter ablation in patients with history of mediastinal radiation is a safe treatment modality. It is not associated with higher in-hospital mortality or cardiac complications in a nationwide registry.

Abstract 4136013: Pre-operative Frailty Status and Short-term Complications Among Adults Undergoing Transcatheter Aortic Valve Replacement

Introduction: The use of Transcatheter Aortic Valve Replacement(TAVR) has provided a safer alternative to open surgical approaches. The introduction of frailty scoring systems has proven effective in improving healthcare approaches and outcomes in various aspects of medicine. As there is a paucity of data on the impact of frailty among TAVR patients, we aim to conduct a retrospective study to investigate further. Methods: Our study analyzed adult cases with a primary procedural code for TAVR among hospitalizations between 2016 and 2021 through the National Inpatient Sample(NIS). Frailty status was explored through the criteria of Gilbert’s frailty index. Multivariable regression models helped evaluate differences in short-term outcomes and complications between them. Results: Our study involved 374200 cases of TAVR that were divided into LFR(285425 cases, 76.3%), IFR(86005 cases, 23.0%), and HFR(2770 cases, 0.7%). Compared to patients with LFR, patients with MFR and HFR showed higher odds of several complications, including cardiogenic shock(MFR: aOR 6.933, p&lt;0.001, HFR: aOR 13.303, p&lt;0.001), acute kidney injury(MFR: aOR 9.737, p&lt;0.001, HFR: aOR 26.685, p&lt;0.001 ), use of invasive mechanical ventilation(MFR: aOR 10.763, p&lt;0.001,HFR: aOR 39.432, p&lt;0.001), events of acute myocardial infarction(MFR: aOR 3.32, p&lt;0.001, HFR: aOR 6.021, p&lt;0.001), need for transfusion of blood products(MFR: aOR 3.027, p&lt; 0.001, HFR: aOR 5.938,p&lt;0.001), post-procedural bleeding(MFR: aOR 2.475, p&lt;0.001, HFR: aOR 3.277, p&lt;0.001), IABP use(MFR: aOR 4.942, p&lt;0.001, HFR: aOR 9.703, p&lt;0.001), and need for pericardiocentesis(MFR: aOR 3.804, p&lt;0.001, HFR: aOR 4.217, p&lt;0.001). Moreover, patients with MFR and HFR reported higher mortality risks than those with LFR(MFR: aOR 6.375, p&lt;0.001, HFR: aOR 16.035, p&lt;0.001 )(Table 1). Conclusion: Our study confirms the higher odds of various complications with increasing frailty status, including all-cause in-hospital death. A careful assessment of pre-operative frailty status along with close monitoring of pre-, peri-, and post-operative status will help improve the outcomes and provide care in a timely fashion.