United States

Introduction: Left ventricular assist devices (LVADs) are a therapy for the management of end-stage heart failure. LVADs are typically managed with long-term therapeutic anticoagulation with warfarin to prevent thrombotic complications. Direct oral anticoagulants (DOACs) are easier to manage than warfarin for other medical conditions requiring therapeutic anticoagulation. There is limited data regarding DOAC safety in patients with LVADs.
Hypothesis: There is no significant difference in outcomes for patients with LVAD when on DOAC compared to warfarin.
Methods: In a single-center retrospective analysis from February 2019 to May 2023, patients with LVAD who were switched to the DOAC apixaban (due to warfarin complications or compliance problems) were compared to patients who remained on warfarin. Overall survival, number of hospitalizations, bleeding, and thrombotic complications were compared within/between groups.
Results: 72 patients were included. DOAC group vs warfarin group: n=12 vs 60, mean age = 52.5 vs 54.2 years; Male 75% vs 81.7%; black 66.7%; vs58.3%. For DOAC group, 10 out of 12 were on warfarin prior to DOAC. Of these 10, incidence rates for bleeding-related admissions were 4.2 per 1000 days on initial warfarin and 0.76 per 1000 days after switching to DOAC. Relative risk reduction of bleeding-related admissions decreased by 81.9%. In the DOAC group, thrombosis-related admissions on initial warfarin were 0, compared to 1 after switching to DOAC. When comparing DOAC and warfarin groups, there were no statistically significant differences in bleeding or thrombotic complications (HR = 0.61; 95%CI= 0.21 to 1.46; HR= 0.74;95%CI= 0.02 to 6.08, respectively) or mortality (HR = 0.44; 95%CI: 0.01 to 3.12). Incidence rates for bleeding-related admissions were 0.98 per 1000 days and 1.59 per 1000 days, for DOAC and Warfarin, respectively. Incidence rates for thrombotic-related admissions were 0.16 per 1000 days and 0.22 per 1000 days, for DOAC and Warfarin, respectively.
Conclusions: There was no statistically significant difference in bleeding, thrombotic events, or mortality in LVAD patients receiving DOAC compared to Warfarin. Switching to DOAC improved bleeding rates in LVAD patients who suffered bleeding complications with Warfarin.

AMA Research Challenge 2023

Apixaban versus Warfarin for LVAD Anticoagulation

poster

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Introduction: Potentially inappropriate medications (PIMs) are defined as medications with greater potential risk than benefit in older adults. The prevalence of cardiovascular disease (CVD) is over 75% in the elderly- these patients have a host of comorbidities and are especially susceptible to polypharmacy and subsequent long-term PIM use. This study aims to examine PIM prescription in a particularly vulnerable population, older adults with CVD.

Methods: We conducted a retrospective cross-sectional study of older adults (≥65 years) admitted to a tertiary teaching hospital’s Cardiac Intensive Care Unit (CCU) and Cardiac Intermediate Care Unit (CIMU) from January 2019- April 2020. A McNemar’s chi-square test was used to assess PIM prevalence at home vs. at discharge, and a multivariable logistic regression model was used to identify demographic and clinical predictors of PIM use.

Results: We included 1296 patients from the CIMU (n=765) and CCU (n=515). The PIM use rate was 44% at home (prior to admission) and 42% on discharge (p-value =0.324). Of the administered PIMs, pantoprazole was the most prevalent both at home and on discharge, with proton pump inhibitors (PPIs) making up the largest fraction of PIMs (49% for home meds, 55% for discharge meds). Nifedipine, another highly prescribed PIM, had a 43% increase in prescription rate at discharge vs. at admission. A multivariate logistic regression of demographic factors showed that women were much more likely than men to be prescribed PIMs both at home (odds ratio (OR) 1.31, p-value =0.041) and upon discharge (OR 1.35, p-value =0.025). The comorbidities rheumatic disease (OR 2.37, p-value =0.002), peptic ulcer disease (OR 6.24, p-value =0.001), and chronic diabetes (OR 1.64, p-value =0.005) were positive predictors of PIM use on discharge. Additionally, Asian race was a strong positive predictor of PIM prescription on discharge (OR 3.57, p-value =0.011), but not on admission. Interestingly, geriatric consultation was not associated with lower PIM rates on discharge (OR 1.128, p-value =0.706).

Conclusion: Older adults admitted to the acute cardiac care unit had a high prevalence of PIM use upon both admission and discharge. Our results highlight certain patient demographics (gender, race, comorbidities) associated with disproportionately high rates of PIM use. Targeting interventions to these populations and increasing awareness of highly prescribed PIM drug classes has the potential to reduce PIM-associated adverse events. 


Prevalence of Potentially Inappropriate Medications in an Acute Cardiac Care Setting


Introduction: CAD occurs when atherosclerotic plaque formation creates variable degrees of stenosis in the coronary arteries. When this occlusion occurs, adequate blood flow will decrease to the heart muscle. If the stenosis is severe or sudden, myocardial injury or infarction can result. The primary goal of interventional treatment is to restore adequate blood flow to myocardial tissue. Two invasive methods are currently available, percutaneous coronary intervention (PCI) and coronary artery bypass (CABG).1 PCI can now be accompanied by intravascular ultrasound (IVUS), which aims to increase physicians' understanding of vessel characteristics to optimize stent implantation.2 It is currently unknown if PCI with IVUS technology will improve one-year outcomes when compared to PCI standard of care and CABG in patients with multivessel disease. Methods: Our team completed a meta-analysis of selected clinical trials studying one year outcomes of patients with multivessel CAD who received PCI, PCI with IVUS, or CABG. These three procedural groups composed our study arms. Three trials were selected based on study arm criteria: FAME 3, BEST, and Syntax II. From these studies, one primary endpoint, Death from any cause, MI, stroke, or repeat revascularization (MACE) and two secondary endpoints, death from any cause and repeat revascularization, were compared between each arms. Results: PCI with IVUS had significantly reduced repeat revascularization (OR 0.623, CI95 0.409-0.950, p=0.028), reduced MACE outcomes (OR .736, CI95 0.539-1.005, p=0.054) and reduced deaths (OR 0.760, CI95 0.483-1.196, p=.236) when compared to CABG. PCI with IVUS had significantly reduced MACE outcomes (OR 0.524, CI95 0.380-0.721, p<0.001), reduced deaths (OR 0.656, CI95 0.363-1.184, p=0.162) and reduced repeat revascularization (OR 0.664, CI95 0.431-1.021, p=0.062) when compared to PCI without IVUS.

IVUS: A Predicted Method to Improve Outcomes for Patients with Multivessel Disease

**Scoring is only possible in the semifinals hall**

**Abstract:**



Association between Height and Change in Blood Pressure over time in the ALLHAT Trial

Background
Metabolic syndrome (MS) has gained attention as a newly discovered risk factor for coronary artery disease (CAD). Studies have demonstrated that individuals with MS have a higher risk for coronary artery disease (CAD), more commonly in females compared to males. ST-elevation myocardial infarction (STEMI) is a significant complication in patients with MS and should be screened as a tactic for secondary prevention. In our study, we aim to compare the clinical outcome of STEMI in those patients with and without MS.
Methods
A total of 132 consecutive patients with acute STEMI admitted to Mamata Medical College and General Hospital, Khammam, a tertiary care hospital, in India, were analyzed. Ethics board approval from the ethical committee of Mamata Medical College and informed consent from each individual patient were obtained. Individuals were then grouped into patients with or without MS based on the criteria from the “International Diabetes Federation 2005.” Among these patients, a diagnosis of STEMI was made based on ECG findings and cardiac biomarkers. The results of the observational study were analyzed using SPSS (IBM Corp., Armonk, NY).
Results
A total of 100 patients were included in the study. The frequency of Metabolic syndrome in patients with STEMI was 46%. The frequency was greater in females (53.2%) than in males (43.2%). Patients who had MS had poor clinical outcomes when compared to patients without MS. Mortality due to STEMI in patients with MS was 15.2% whereas in patients without MS was just 2% (p < 0.05).
Conclusion
Metabolic Syndrome is an important risk factor that should be taken into account for secondary prevention of coronary artery disease. It has the potential to be used as a predictor of the severity and short-term outcomes of STEMI. Further, longitudinal studies with larger sample sizes would help improve existing literature by increasing the external validity of this hypothesis. In conclusion, MS should be an independent screening criterion to decrease cardiovascular mortality and morbidity.

Impact of Metabolic Syndrome on Clinical Profile and Outcomes in Patients with Acute​ ST-Elevation Myocardial Infarction: A Cross-Sectional Study​

Background
Pulmonary hypertension (PH) in heart failure with preserved ejection fraction (HFpEF; PH-HFpEF) is a relatively newly recognized condition that poses a leading healthcare burden. The development of PH is the strongest predictor of adverse outcomes in HFpEF patients, with a staggering 60% 5-year mortality rate. Incomplete understanding of pathophysiology, ineffective therapies, and limited non-invasive diagnostic methods contribute to this growing epidemic. HFpEF patients initially develop reversible isolated postcapillary PH (ipc-PH) from passively transmitted backward pressures. If not diagnosed promptly, ipc-PH can transform into pre- and postcapillary PH (cpc-PH), characterized by irreversible pulmonary vascular remodeling. Progression to cpc-PH is not explained by traditional risk factors alone, suggesting the need to examine novel regulatory mechanisms. 
Polyunsaturated Fatty Acid (PUFA) metabolites have emerged as pivotal players in cardiovascular health by regulating balance between anti-inflammatory, pro-inflammatory, and pro-resolutory lipid mediators. Previous research has revealed that an imbalance of these lipids leads to metabolic syndrome, an established risk factor of PH-HFpEF. We aimed to identify PUFA-derived lipid mediators that can predict PH in HFpEF patients.
Methods
A single center prospective cohort study was conducted on 88 enrolled patients with a new diagnosis of HFpEF who were grouped into PH subtypes post-diagnostic right heart catheterization: HFpEF without PH (control, n=40), HFpEF with ipc-PH (ipc-PH-HFpEF, n=30), and HFpEF with cpc-PH (cpc-PH-HFpEF, n=18). Venous samples were collected during catheterization. Levels of 143 PUFA metabolites were analyzed using mass spectroscopy with Multiple Reaction Monitoring. Regression models assessed which PUFA metabolites predicted the PH subtypes. Statistics: p<0.05.
Results
Clinical demographics were similar among all groups. Ipc-PH-HFpEF was characterized by low pro-resolutory 7(S)-Maresin1 (p=0.0003), low anti-inflammatory 11(12)-EpETrE (p=0.02), and low anti-inflammatory 8(S)-HETrE (p=0.02) compared to control. These metabolites collectively predicted ipc-PH-HFpEF with 69% diagnostic accuracy. Cpc-PH-HFpEF was distinguishable from control by low pro-resolutory 7(S)-Maresin1 (p=0.004), high pro-inflammatory 5,6-DiHETrE (p=0.001), and high pro-inflammatory tetranor prostaglandin E2 (p=0.007). Collectively, these metabolites predicted cpc-PH-HFpEF with 83% diagnostic accuracy. High pro-resolutory 12(13)-EpOME (p=0.013) distinguished cpc-PH-HFpEF from ipc-PH-HFpEF, with a 75% predictive value. Interestingly, low pro-resolutory 7(S)-Maresin1 yielded the greatest predictive value of 67% in predicting cpc-PH-HFpEF compared to all groups. 
Conclusion
Our findings demonstrate that distinct PUFA inflammatory mediators are associated with PH pathogenesis in HFpEF. This novel lipidomics framework introduces new non-invasive biomarkers to predict PH and facilitates further experimental study of innovative therapeutic molecular targets.

The Lipid Link: Predicting Pulmonary Hypertension in Heart Failure with Preserved Ejection Fraction

The Impact of Insurance Status and Surgical Approach on Clinical Outcomes of Segmental Colectomy


Background: Scleroderma is a rare, autoimmune connective tissue disorder characterized by fibrotic hardening and tightening of the skin. Scleroderma has developed as a drug-induced and paraneoplastic phenomenon, but there has been little discussion on scleroderma associated with COVID-19. We present an updated review of scleroderma after COVID-19 infection and vaccination.
Methods: Literature searches were conducted on MEDLINE (PubMed), Embase, Scopus, and Google Scholar from 2019 to January 2023. Thirteen articles were selected based on subject relevance, and references within articles were also screened. 
Results: As of January 2023, there have been four cases of scleroderma after COVID-19 infection (Mage = 54.50 years, Rage = 47-61 years, Male:Female = 1:3) and ten cases of scleroderma after COVID-19 vaccination (Mage = 62.8 years, Rage = 45-73 years, Male:Female = 1:9). Moderna’s Spikevax accounted for two cases, Pfizer-BioNTech’s Tozinameran accounted for seven cases, and Oxford-AstraZeneca’s Vaxzevria accounted for one case. 
Conclusions: Hypotheses for the pathogenesis of scleroderma after COVID-19 infection and vaccination include molecular mimicry, cytokine activation, and endothelial injury, and we advise clinicians to monitor for this rare potential complication. However, the benefits of the COVID-19 vaccines still greatly outweigh the risks.

Scleroderma after COVID-19 Infection and Vaccination

PEMF has been shown to influence various signaling molecules involved in wound healing, including MMP-2, IL-6, and TGF-β. Studies have begun to explore the use of PEMF in other diseases, such as incision wound repair, diabetes-related foot ulcers, and pressure ulcers. The cellular response to PEMF is highly variable and likely influenced by multiple factors: frequency, duration, tissue type, stage of wound repair, and field strength. Before PEMF can be used in clinical practice, further research using standardized experimental guidelines is needed to determine precisely how different variables influence PEMF therapy. 


An Integrative Review Of Pulsed Electromagnetic Field Therapy And Wound Healing 


Linear IgA bullous dermatosis (LABD) is a rare autoimmune blistering disorder impacting children and adults. We aim to report the unifying and unique clinical features as well as treatment options for LABD in childhood.
A retrospective chart review was performed for pediatric patients with linear IgA bullous dermatosis our institution. Ten patients (6 male, 4 female) met the inclusion criteria and were included in the study. The mean time to diagnosis was 4.8 months and mean disease duration was 38 months (range: 6 months – 10 years). Dapsone, systemic glucocorticoids, and topical glucocorticoids were among the most common treatments. All patients recovered well and eventually experienced complete remission of their disease.
In conclusion, a variety of medications can be used in the management of LABD in children. Dapsone and systemic corticosteroids can be effective and reliable first-line treatments for pediatric LABD. Immunosuppressants may be used successfully as second-line treatment or steroid-sparing therapy. IVIG combined with prednisone was effective in the management of neonatal LABD.

Next from AMA Research Challenge 2023

Prevalence of Potentially Inappropriate Medications in an Acute Cardiac Care Setting