Association of iron deficiency anemia with dental caries in the permanent first molars of children aged 7-12 years in Karachi, Sindh, Pakistan: protocol for an analytical cross-sectional study

Introduction
Iron deficiency anaemia (IDA) and dental caries are prevalent diseases among Pakistani children. Limited research has been done to explore their association with permanent teeth. Given the caries susceptibility of permanent first molars and their role in the development of ideal occlusion, this study aimed to estimate caries frequency in these molars and assess its association with IDA in 7–12 year-old children.

Methods and analysis
This analytical cross-sectional study will include 141 children aged 7–12 years visiting physicians in the paediatric OPD of Dr. Ruth K.M. Pfau, Civil Hospital Karachi. Using consecutive sampling, children who met initial screening criteria were further evaluated to determine eligibility for the study. Data collection will involve physical examinations (including weight and height), oral examinations (including the relevant oral hygiene and caries assessments) and laboratory examinations (including the prescribed tests). In addition, questions will be asked about sociodemographic characteristics, history of IDA, oral hygiene habits, smokeless tobacco use and the frequency of cariogenic dietary consumption. Exposure variable will include the presence of IDA, assessed using complete blood count, C-reactive protein and ferritin tests and treated as a dichotomous variable. Outcome variable will include dental caries in at least one permanent first molar, assessed using the Decayed, Missing, and Filled Teeth index and also treated as a dichotomous variable. Analysis will include Poisson regression with robust variance, reporting prevalence ratios with 95% CIs for the association of IDA and dental caries in the permanent first molars. Frequency of children with carious permanent first molars with 95% CIs will also be reported.

Ethics and dissemination
This research has been approved by ethical review committee of Aga Khan University (Reference number: 2024-9692-30593) and the institutional review board of Dow University of Health Sciences (IRB Reference: IRB-3556/DUHS/Approval/2024/196) before participant recruitment. Results will be disseminated through seminars and peer-reviewed publications.

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Abstract 4144512: Impact of Nutritional Status on Transcatheter Edge-to-Edge Repair Outcomes in Mitral Regurgitation: Insights from a National Database Analysis

Circulation, Volume 150, Issue Suppl_1, Page A4144512-A4144512, November 12, 2024. Introduction:Transcatheter edge-to-edge repair of the mitral valve with the MitraClip has offered a less invasive percutaneous alternative to surgical repair in select candidates with mitral regurgitation. Various factors impact the outcomes of MitraClip. We investigated the impact of nutritional status on the outcomes of MitraClip.Methods:Utilizing the nationwide inpatient sample data for years from January 1, 2016, and December 31, 2021, patients who underwent MitraClip were identified. They were categorized based on obesity and protein energy malnutrition (PEM). Statistical significance was assigned at p

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Abstract 4144552: Difference in Characteristics and Outcomes of Atrial Fibrillation patients based on type of Heart Failure: An NRD Propensity Matched Analysis

Circulation, Volume 150, Issue Suppl_1, Page A4144552-A4144552, November 12, 2024. Background:Heart Failure(HF) significantly deteriorates outcomes in patients with Atrial Fibrillation. Heart Failure with Preserved Ejection Fraction(HFpEF) and Atrial Fibrillation(AFib) share common disease progression pathways and are gradually increasing in prevalence.Aim:We aim to study the variation in characteristics and outcomes based on type of heart failure in patients with AFib using the National Readmission Database(2016-2020).Methods:NRD database was used to identify patients with Atrial Fibrillation using ICD-10 codes. Patients were stratified into two groups based on the presence of systolic dysfunction and diastolic dysfunction. Patients with combined systolic and diastolic dysfunction were excluded. Information was collected on patient demographics, comorbidities, and outcomes. Propensity score matching was performed to compare outcomes among AFib patients with HFrEF and HFpEF.Results:A total of 6,673,080 patients with AFib and isolated systolic or isolated diastolic dysfunction were included in the analysis. 3,914,695(58.66%) had HFpEF and 2,758,385 (41.34%%) had HFrEF. In the HFpEF group 57.8% were females in comparison with 33.12% females in the HFrEF group. HFpEF group had a higher rate of hypertension (84.9% vs 82%, p

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Abstract 4139144: “Comparative Analysis of Inpatient Outcomes: Decompensated Systolic Heart Failure (HFrEF) with and without Iron Deficiency Anemia, Propensity-Matched Nationwide Study (2017-2021).”

Circulation, Volume 150, Issue Suppl_1, Page A4139144-A4139144, November 12, 2024. Background:Iron deficiency anemia (IDA) affects approximately one-third of patients with systolic heart failure, yet comprehensive population-based analyses of its impact on in-hospital outcomes remain limited. This study seeks to examine how IDA influences in-hospital outcomes among individuals with decompensated systolic congestive heart failure (HFrEF).Methods:Using data from the National Inpatient Sample (NIS) database spanning from 2017 to 2021, this study identified patients hospitalized for decompensated systolic congestive heart failure (HFrEF) with a secondary diagnosis of IDA using ICD-10 codes such as I5020-23 and D500, D501, D508, D509. Propensity score matching (PSM) was then employed to create cohorts without and with IDA at a 1:3 ratio. Multivariate regression analyses were conducted to evaluate various outcomes, including in-hospital mortality, cardiogenic shock (CS), acute myocardial injury (AMI), cardiac arrest, ventricular tachycardia (VT), ventricular fibrillation (VF), length of stay (LOS), and total hospitalization charges. Furthermore, the utilization rate of mechanical ventilation and circulatory support, including intra-aortic balloon pump and extracorporeal membrane oxygenation, was evaluated in both cohorts.Results:Among 253,034 HFrEF hospitalizations, 16,200 (6.4%) had a secondary diagnosis of IDA. After PSM, multivariate regression analyses revealed no significant differences in the odds of cardiogenic shock (10% vs. 10%, p=0.86), in-hospital mortality (2.6% vs. 2.8%, p=0.71), and LOS (7.19 vs. 7.27 days) between the two groups. Additionally, the likelihood of cardiac arrest, ventricular arrhythmias, AMI, and utilization of mechanical ventilation and circulatory support did not reach statistical significance. However, patients with IDA and HFrEF had higher hospitalization charges ($85,516 vs. $93,000).Conclusion:HFrEF patients, with or without IDA, had similar odds of cardiogenic shock, in-hospital mortality, mechanical circulatory support utilization, as well as LOS. However, IDA with HFrEF correlated with higher hospitalization charges.

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Abstract 4146340: Outcomes of Transcatheter Aortic Valve Implantation (TAVI) in Patients with and without Iron Deficiency Anemia: An Analysis of the National Inpatient Sample (NIS) Data from 2016-2021

Circulation, Volume 150, Issue Suppl_1, Page A4146340-A4146340, November 12, 2024. Background:Iron deficiency anemia (IDA) is a common comorbidity in patients undergoing Transcatheter Aortic Valve Implantation (TAVI). This study investigates the differences in outcomes between TAVI patients with and without IDA, focusing on mortality, procedural complications, and baseline characteristics.Methods:A retrospective analysis was conducted using data from the National Inpatient Sample (NIS) from 2016 to 2021. The outcomes for patients undergoing TAVI with IDA were compared to those without IDA. Multivariate logistic regression was employed to analyze outcomes.Results:The study included 367,440 patients without iron deficiency anemia and 16,030 patients with iron deficiency anemia. Baseline characteristics showed a significant difference in gender distribution, with 47.15% of IDA patients being male compared to 56.4% in the non-IDA group (P < 0.0001). Racial distribution varied significantly (P < 0.0001), with a higher % of Black patients in the IDA group (6.16% vs. 3.97%).Patients with IDA had higher odds of heart block (OR: 1.146, 95% CI: 1.061-1.238, P = 0.001), bleeding (OR: 1.229, 95% CI: 1.115-1.355, P < 0.001), transfusion (OR: 2.487, 95% CI: 2.209-2.800, P < 0.001), prosthetic dysfunction (OR: 1.377, 95% CI: 1.053-1.801, P = 0.02), post-procedure shock (OR: 1.450, 95% CI: 1.180-1.782, P < 0.001), intra-procedure shock (OR: 1.562, 95% CI: 1.264-1.931, P < 0.001), dialysis (OR: 1.450, 95% CI: 1.044-2.015, P = 0.027), atrial fibrillation (OR: 1.115, 95% CI: 1.033-1.204, P = 0.005), cardiogenic shock (OR: 1.587, 95% CI: 1.283-1.963, P < 0.001), sepsis (OR: 1.541, 95% CI: 1.122-2.117, P = 0.008), respiratory failure (OR: 1.635, 95% CI: 1.462-1.828, P < 0.001), and myocardial infarction (OR: 1.684, 95% CI: 1.421-1.996, P < 0.001). Patients with IDA had a longer length of stay (Coefficient: 2.067, 95% CI: 1.798-2.337, P < 0.001) and higher total hospital charges (Coefficient: $23,107, 95% CI: $16,471-$29,742, P < 0.001) compared to those without IDA.Conclusions:Patients with IDA undergoing TAVI are at higher risk for several complications, including heart block, bleeding, transfusion, prosthetic dysfunction, post-procedure and intra-procedure shock, dialysis, atrial fibrillation, cardiogenic shock, sepsis, respiratory failure, and myocardial infarction compared to those without IDA. These findings underscore the need for targeted management strategies and further research to optimize outcomes for TAVI patients with iron deficiency anemia.

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Abstract 4139307: Machine Learning Identifies Predictors of Poor Outcomes in Patients with Heart Failure Presenting to the Emergency Department for Chest Pain

Circulation, Volume 150, Issue Suppl_1, Page A4139307-A4139307, November 12, 2024. Introduction:Heart failure (HF) is associated with unique comorbidities and sequelae, which can affect clinical presentation and patient outcomes. This is specifically challenging when patients are evaluated for suspected acute coronary syndrome (ACS). We sought to compare the most important predictors of poor outcomes in patients with and without HF seen in the emergency department (ED) for ACS.Methods:This was a secondary analysis of a prospective observational cohort study of consecutive patients seen for symptoms suggestive of ACS, such as chest pain (CP) and dyspnea, in the EDs of three UPMC-affiliated tertiary care hospitals (NCT04237688, clinicaltrials.gov). Primary outcome was 30-day major adverse cardiac events (MACE), adjudicated by two independent reviewers. Clinical data were collected form charts and we used KNN to impute missing data for features, most of which had less than 12.5% missingness. For features with greater than 12.5% missingness (i.e., BNP, Mg), binary indicators were added to flag missing values. Data were normalized using the Euclidean norm. Two random forest (RF) classifiers were trained using 10-fold cross validation with 71 manually selected features available early in the ED course (i.e., vital signs, labs, past medical history, ECG), and tested on patients with and without known HF. Model performance was evaluated using AUROC, and top features were identified with SHAP values.Results:The sample included 2400 patients (age 59 ± 16 years; 47% female, 41% Black, 15.9% ACS), of whom 438 had HF (age 66 ± 14 years; 45% female, 49% Black, 15.1% ACS). Individuals with HF were more likely to experience MACE (38% vs 23%,p

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Abstract 4144763: Impact of Anemia on Clinical Outcomes in Atrial Fibrillation Patients on Oral Anticoagulants: A Systematic Review and Meta-analysis.

Circulation, Volume 150, Issue Suppl_1, Page A4144763-A4144763, November 12, 2024. Background:Anemia is frequently observed as a comorbidity in atrial fibrillation (AF) and is associated with poor clinical outcomes.Purpose:We aim to investigate the impact of anemia on clinical outcomes in AF Patients on oral anticoagulants.Methods:We comprehensively searched PubMed, WOS, SCOPUS, EMBASE, and CENTRAL through March 2024 and conducted a prognostic systematic review and meta-analysis. All analyses were performed using R V. 4.3.1.Results:With the inclusion of 23 studies, our cohort comprised a total of 286,781 patients. Anemia was significantly associated with an 86% increase in the risk of major bleeding (HR: 1.86 with 95% CI [1.61, 2.14], P< 0.01), a 25% increase in the risk of intracranial hemorrhage (HR: 1.25 with 95% CI [1.02, 1.54], P= 0.03), a 92% increase in the risk of gastrointestinal bleeding (HR: 1.92 with 95% CI [1.68, 2.19], P< 0.01), and a 91% increase in the risk of all-cause mortality (HR: 1.91 with 95% CI [1.46, 2.51], P< 0.01). However, Anemia did not significantly affect the risk of stroke, TIA, or systemic embolism (HR: 1.07 with 95% CI [0.93, 1.22], P= 0.36).Conclusion:Anemia was significantly associated with an increased risk of major bleeding, intracerebral hemorrhage, gastrointestinal bleeding, and all-cause mortality without impacting stroke, TIA, or systemic embolism. Further research is warranted to compare the effects of DOACs and vitamin K antagonists. Clinically, it is imperative to closely monitor the anemic status of patients due to these elevated risks.

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