Cardiology Commons^™

Association Between Trainee Involvement During Pediatric And Congenital Cardiac Catheterization And Procedural Outcomes., Natalie Jayaram, John A. Spertus, Kevin F. Kennedy, Andrew C. Glatz

Manuscripts, Articles, Book Chapters and Other Papers

BACKGROUND: Participation in the cardiac catheterization laboratory is a requirement of cardiology fellowship training. We sought to determine whether trainee presence is associated with outcomes during pediatric and congenital cardiac catheterization.

METHODS: We identified catheterizations between January 2011 and September 2020 within the IMPACT (Improving Pediatric and Adult Congenital Treatment) Registry. Multivariable multilevel regression was used to determine the association between trainee presence and procedural outcomes.

RESULTS: Of 122 760 catheterizations at 107 academic hospitals, a trainee was present in 71 651 (58.4%) cases. Rates of major adverse events were similar between trainee and nontrainee cases (9.0% versus 8.0%). Contrast …

Practice Patterns In Pediatric Cardiothoracic Presurgical Conferences: A Multicenter Survey Study., Britney Reed, Poonam Puranik, Andrew Rodenbarger, Mira Trivedi, Dilachew A. Adebo, Gary Beasley, Louis Bezold, M Jay Campbell, Michael R. Carr, Joshua Daily, Mark Debrunner, Erica Del Grippo, Carlen G. Fifer, Timothy M. Hoffman, Susan R. Hupp, Joshua D. Kurtz, Gira Morchi, Carl Owada, Renuka Peterson, Michael D. Puchalski, Ryan Romans, Arwa Saidi, Rajesh U. Shenoy, Anoop K. Singh, Robert D. Tunks, Thomas M. Yohannan, Carolyn M. Wilhelm, Jyoti K. Patel

Manuscripts, Articles, Book Chapters and Other Papers

Pediatric cardiothoracic surgeries are high-stakes, complex procedures, typically undergoing prior review at multidisciplinary conferences. This study evaluates practice patterns of conferences throughout the United States (US). Surveys were distributed to fellowship program directors or division directors in 124 US pediatric cardiology centers seeking information on conference logistics, fellow roles, quality improvement (QI), and satisfaction. All 47 responding centers (response rate 38%) conduct presurgical conferences, mostly on a weekly basis (92%) lasting 60-120 min (79%). The conferences are solely virtual (19%) or hybrid (81%). High-volume centers (> 300 surgical cases/year) are more likely to hold multiple conferences (13/20 vs 7/27, p <  0.01) and less likely to designate a moderator (11/20 vs 22/26, p = 0.027). Categorical pediatric cardiology fellows at 33 centers present clinical data (97%), echocardiograms (85%), catheterizations (82%), and cross-sectional imaging (39%), typically beginning in their first year. Most centers report that minor (98%) or major changes (51%) are made to patient management at least "sometimes." Responders rate conferences as very important (median 10/10 on a 10-point Likert scale, IQR 9-10), but satisfaction is more modest (median 7/10, IQR 7-9). Only 17% of centers have a formal QI process. Comments from 42 centers reveal positive themes of collaboration (68%) but also concerns about lengthy (30%) or inefficient (36%) discussion. Conclusions: This survey highlights common practices for pediatric cardiothoracic presurgical conferences. Conferences are collaborative and seen as highly impactful. However, satisfaction varies, and QI efforts are infrequent. These findings highlight opportunities for process improvement and standardization.

Leveraging State Of The Art Simulation-Based Education To Enhance Medical Student Interest In Internal Medicine And Cardiology, Mohamed Abdalaziz, Nicholas Mitchell, Ryan Madder

Conference Presentation Abstracts

Abstract Background: Early clinical exposure plays a critical role in shaping medical student interest, and therefore choice in medical specialty. Traditional curricula offer limited opportunities for hands-on engagement with cardiovascular decision-making and procedures. Simulation-based education may address this gap by providing immersive, low-risk learning experiences. Methods: An internal medicine resident and Cardiology fellow led, faculty-supported simulation curriculum was developed for third- and fourth-year medical students using a state-of-the-art simulation laboratory. Two 75-minute sessions were conducted over a two-month period, with a total of 27 students participating. The first session included a focused electrocardiography didactic emphasizing ST-elevation myocardial infarction (STEMI) recognition, …

Artificial Intelligence-Enhanced Cardiac Point-Of-Care Ultrasound: A Prospective Single-Arm Study, Lior Fisher, Michael Fiman, Yuval Yarkoni, Ella Segal, Boris Fishman, Kobi Faierstein, Noa Rubin, Adiel Am-Shalom, Howard Amital, Qiong Zhao, Smadar Kort, Praveen Mehrotra, Ehud Schwammenthal, Robert Klempfner, Eyal Zimlichman, Ehud Raanani, Elad Maor

Division of Cardiology Faculty Papers

OBJECTIVE: To evaluate the clinical utility of combining artificial intelligence (AI) with handheld focused cardiac ultrasound (FoCUS) performed by noncardiologist physicians in clinical care settings.

PATIENTS AND METHODS: In this prospective, single-arm study conducted from July 1, 2022, through December 31, 2023 (ClinicalTrials.gov NCT05455541), 660 adult patients presenting to the emergency department or internal medicine wards were assessed with handheld ultrasound devices enhanced by AI algorithms. These algorithms provided automated analysis of ventricular function, valvular disease, pericardial effusion, and inferior vena cava size. Participating physicians received focused training and performed examinations either in response to clinical suspicion or as part …

Late Bioprosthetic Valve Migration- A Rare Entity After Tavi, Sahej Arora, Ghazi Khan, Jeremiah Depta

Advances in Clinical Medical Research and Healthcare Delivery

We present a case of hemolytic anemia due to a rare complication of late bioprosthetic valve migration, who underwent successful treatment with valve in valve transcatheter aortic valve implantation. Our patient with symptomatic moderate aortic stenosis underwent the index procedure a year ago and treated for bacteremia 3 months ago, presented with hemolytic anemia and echocardiography revealing aortic paravalvular leak. The hemolysis was attributed to Bioprosthetic valve dysfunction after a negative hematological workup. The patient's aortography revealed ventricular migration of the valve, not seen on a cardiac CT scan performed before. This was followed by a successful valve in valve …

Catheter Ablation In Unstable Patients With Atrial Tachyarrhythmias & Decompensated Heart Failure Requiring Mechanical Circulatory Support, Hytham Rashid, Alexander Rhodes, Hafez Golzarian, Suhas Tatapudi, Austin Howard, Brian Greet, Christian Sohns, David Burkland

Gulf Coast Division GME Research Day 2026

No abstract provided.

Pre-Existing Bifascicular Block With Wide Qrs And/Or Prolonged Pr In Patients Undergoing Tavr: Case Series And Review, Puneeth Shridhar, Dhavalkumar Patel, Saumya Sharma, Pranav Loyalka, Michael Daniel, Justin Saunders

Gulf Coast Division GME Research Day 2026

No abstract provided.

Under-Representation Of Women And Minorities In Structural Heart Trials And Practice: A Systematic Review, Yves Najm Mrad, Ahmad Al-Taweel, Bahaeddin Shabaneh

Gulf Coast Division GME Research Day 2026

No abstract provided.

Mechanical-Medical Convergence In Heart Failure: Artificial Intelligence, Finite-Element Modeling, And 3d Printing For Diagnosis And Prognosis, Quazi Noor E. Sabrina, Quazi Md Zobaer Shah, Quazi Noor E. Sohela, Md Mahabub Hasan Mousum, Md. Moyeen Uddin Chisty, Quazi Md. Akbar Shah

Mechanical & Aerospace Engineering Faculty Publications

Heart failure remains a leading cause of global morbidity and mortality, yet routine clinical indices often miss the regional biomechanical disturbances that drive progression and shape treatment response. This State-of-the-Art review examines how finite-element (FE) modeling, additive manufacturing, and artificial intelligence (AI) are converging to improve the diagnosis, phenotyping, procedural planning, and prognostic assessment of heart failure (HF). Although these technologies have matured in structural heart disease and transcatheter intervention research, their greatest translational potential may lie in HF, where patient-specific ventricular remodeling, myocardial stress–strain heterogeneity, valve-ventricular coupling, and device-tissue interaction are incompletely captured by conventional clinical indices. We synthesize …

Albuminuria Screening Among Egyptian Patients With Cardiovascular Diseases, Regardless Of Their Diabetic Condition, Amira Fawzy Soliman, Khaled Shelbaya, Wael Abdelatief Mohamed Elhakeem, Osama Louis, Basheer Hafez, Wael Ali, Tarek M.Abdelaziz Elkholy, Baher Emil Ibrahim, Mahmoud M Abdou, Bassem Zarif

Journal of Medicine in Scientific Research

Even in the absence of overt kidney disease, albuminuria is increasingly recognized as a marker of systemic endothelial dysfunction and heightened cardiovascular risk. This prospective cohort study aimed to evaluate whether baseline urinary albumin-tocreatinine ratio (UACR) predicts subsequent incident cardiovascular outcomes among Egyptian adults with cardiovascular disease, regardless of diabetic status.

Development Of A Longitudinal, Small-Group Pocus Curriculum For Internal Medicine Residents, Shah N. Mahmud Do, Ammar W. Bhatti Do, Ariq Rahman Md, Omar Al Qassab Md, Fraser Mackay Md

The Lahey Journal

Development of a Longitudinal, Small-Group POCUS Curriculum for Internal Medicine Residents

Introduction

Point-of-Care Ultrasound (POCUS) is integral for clinicians to enhance their diagnostic and procedural skills. Unlike Emergency Medicine or Anesthesia training programs, Internal Medicine programs often lack a structured and standardized curriculum. We thus developed a longitudinal and multi-pronged POCUS curriculum aimed at building trainee competency when utilizing ultrasound for diagnostic and procedural work-up.

Methods

The curriculum encompasses the following: basics of ultrasound, ultrasound-guided procedures, thoracic ultrasound/Bed Lung Ultrasound in Emergency (BLUE), and cardiac ultrasound/Focus-Assessed Transthoracic Echocardiography (FATE). These modules were integrated into the residents’ clinic blocks. We utilized …

Summary Of The 2024 Brano Heart Failure Forum, Igor D. Gregoric, Milovan Bojic, Bojan Vrtovec, Rajko Radovancevic

The VAD Journal

Since 2007, the Branislav “Brano” Radovancevic Heart Failure Forum (BHFF) has been held annually to provide a venue for experts to present and discuss “Innovations and New Treatment Strategies in Heart Failure.” Clinicians and researchers gather yearly in a different Eastern European city to discuss the latest in heart failure diagnostics and therapeutics. The 2024 BHHF was held on the 18^th through the 20^th of September 2024 in Belgrade, Serbia. It was attended by over 100 faculty from 16 countries. In addition, participation through online streaming was available. Throughout the forum, 17 sessions focused on challenges and solutions …

Adult Congenital Heart Disease As A Career? Examining Encouraging And Deterring Factors In The Global Achd Survey, Katia Bravo-Jaimes, M. H. D. Osama Srour, Petra Jenkins, Raquel Luna-Lopez, Oktay Tutarel, Geetha Kandavello, Carlos-Eduardo Guerrero-Chalela, Edgar García-Cruz, Judith Ackerman, Amalia Elizari, Miriam Valdez-Ramos, Blanche Cupido, Dominica Zentner, Murad Almasri, Sabrina Phillips, Christopher Mcleod, Luke Burchill, Celia Kamath, Renee Bullock-Palmer, Jonathan Windram

Department of Medicine Faculty Papers

BACKGROUND: There is a global mismatch between the number of adults with congenital heart disease and adult congenital heart disease (ACHD) cardiologists, potentially impacting patient outcomes. This survey explores factors influencing trainees and cardiologists' career choices in ACHD.

METHODS: An online, anonymous global survey on demographics, ACHD as a career choice, encouraging and deterring factors assessed via a 5-point Likert scale and open-ended questions on recommending ACHD was distributed through targeted emails and social media. Responses meeting a 75% completion criterion were analyzed using descriptive statistics and thematic analysis.

RESULTS: Among 811 included responses, most were from women (53.5%), aged …

By The Book: A Look At Whether Guidelines Impact Clinical Decision Making In Sglt2i Prescriptions, Marc Mounzer, Vacha Shah, Antony Fuleihan, Brian Osler

Health Equity and Quality Improvement (HEQI) Summit

Introduction

• Specialty-specific guidelines reduce medical errors and support clinical decision- making
• Effective implementation requires timeliness and accuracy, often limited by systemic barriers
• This study investigates factors affecting sodium glucose cotransporter 2 inhibitor (SGLT2i) prescribing in heart failure to enhance guideline adherence and care quality

The Importance Of How And When In Measuring Epicardial Adipose Tissue, Brian Fardman, Juan Antonio Requena-Ibáñez, Carlos García Santos-Gallego, Anderly José Rodriguez Cordero, Samantha Sartori, Javier Sanz Sanz, Valentin Fuster, Juan José Badimon

Rowan-Virtua Research Day

Epicardial Adipose Tissue (EAT) is drawing increasing attention. As a quantifiable, modifiable, and potentially new cardiovascular therapeutic target, its accurate measurement is particularly relevant. In Cardiac Magnetic Resonance (CMR) different methods can be used to assess EAT burden. We take advantage of CMR-studies of EMPATROPISM trial to assess EAT through three different methods, evaluate the effect of Empagliflozin and look for significant difference in the ability to detect changes in serial measurements. In some settings such as treatment-induced changes or patient follow-up, multi-slice method of EAT evaluation provides higher accuracy to detect significant differences, otherwise unnoticed by single-slice approaches.

A Case Of A Massive Right Atrial Thrombus Removal Under Transesophageal Echocardiographic Guidance, Justin Phillips, Max Kabolowsky, Alex M. Hendon, Samantha Arzillo

HCA Healthcare Journal of Medicine

Background

With the advent of catheter guided interventions, practitioners have added another tool alongside chemical lysis and surgical removal to reduce the clot burden of patients with large emboli and thrombi. Due to comorbid conditions, many patients are poor candidates for surgical or chemical clot treatment but may present optimally for catheter-based thromboembolectomy. In this case, we highlight the benefits of mechanical thrombectomy with transesophageal echocardiographic guidance to reduce the clot burden of a patient who would otherwise be considered a poor candidate for surgical or chemical treatment.

Case Presentation

This case follows a 78-year-old man with a past medical …

Pediatric And Congenital Cardiac Services: An Innovative And Empowering Approach To Global Training And Equitable Care, Wyman W. Lai, Dominique Vervoort, David Bradley, Antonio G. Cabrera, Casey Culbertson, Alejandro Floh, Saurabh K. Gupta, Babar S. Hasan, Adrian Holloway, Jeffrey P. Jacobs, Kathy J. Jenkins, R. K. Kumar, L.A. Larrazabal, Colin J. Mcmahon, Daniel J. Penny, Alistair Phillips, Emilio Quezada, Craig A. Sable, Shubhika Srivastava, Sandra L. Staveski, Patcharapong Suntharos, David F. Teitel, Betsy Tirado, Brian C. Tran, Bistra Zheleva, Liesl Zuhkle, Anthony C. Chang

Division of Cardiology Faculty Papers

Congenital heart disease is a leading cause of preventable death in children, with a disproportionate impact on low- and middle-income countries. Despite progress in treating congenital heart disease globally, significant challenges remain in accessing specialized cardiovascular care, particularly cardiac surgery, in low- and middle-income countries. This review examines current models of assistance and proposes a novel global training program to address these inequities. Key challenges identified include building program infrastructure, training health care providers, ensuring financial sustainability, and promoting local engagement. The proposed program, structured under a new international organization, will leverage emerging technologies to deliver accessible and rigorously assessed …

The Second Ever Reported Case Of Acute Bacterial Native Valve Endocarditis Caused By Streptococcus Thoraltensis, Shaun Abid Md, Anton Stolear, Maxim Dulgher, Stuart Zarich

Posters

Streptococcus thoraltensis is a gram-positive coccus first described by Devriese et al. in 1997, who isolated it from the vaginal fluids and intestines of pigs [1]. This species has subsequently been isolated from rabbit feces [2], the human oral cavity [3], placenta [4], and in only five reported cases, the human blood [5]. To our knowledge, only one other case of native valve bacterial endocarditis due to this bacterium has ever been reported [5], as well as a single case of prosthetic valve bacterial endocarditis [6]. Intravenous drug use (IVDU) is a strong risk factor for infective endocarditis. The organisms …

A Heart Full Of Nails: Complex Management Of Multiple Nail Gun Cardiac Injuries, Shaun Abid Md, Stuart Zarich

Posters

A 54-year-old male presented after a suicide attempt, suffering severe cardiac and extracardiac injuries from firing a nail gun into both temples (Figure 1A) and his chest. Imaging showed six 5cm nails embedded in his heart: two in the left ventricle, two in the right ventricle, one traversing the ascending aorta into the left atrium, and one entering the right ventricle from the left parasternal chest wall (Figure 1B, C, D). These injuries resulted in hemorrhagic pericardial effusion with tamponade, acute aortic regurgitation, mitral valve/pulmonary artery perforations, and a ventricular septal defect.

When The Farm Turns Fatal: A Rare Infection Causing Heart Block, Shaun Abid Md, Anton Stolear, Sumedh Iyengar, Yussif Issaka Md, Vanessa Agberien Md, Stuart Zarich

Posters

Brucellosis, a zoonotic bacterial infection caused by Brucella species, is typically acquired through contact with infected livestock or consumption of unpasteurized dairy products. It can manifest with various systemic symptoms but is rarely associated with cardiac complications, particularly conduction disturbances such as heart block. When brucellosis does affect the heart, it may result in endocarditis, myocarditis, or, more infrequently, conduction abnormalities. This report describes an unusual case of brucellosis-induced complete heart block in an elderly woman who recently returned from a farm in Colombia, a region where brucellosis is endemic.

Enhancing Patient-Centered Efficiency: Reducing Cardiology Clinic No-Shows Using Technology, Pre-Visit Planning & Patient Resources, Pat Shirey

Doctor of Nursing Practice (DNP) Scholarly Projects - Archive

Background: Cardiovascular disease (CVD) affects 48% of U.S. adults, requiring regular cardiology visits to manage risk factors and the early detection of complications (American Heart Association, 2019). No-shows disrupt continuity of care, worsen health outcomes (Choi et al., 2020), and decrease clinic efficiency (Goossens et al., 2022). A North Texas cardiology clinic reported a 31.9% overall no-show rate and a 42.1% no-show rate for new patients, costing $1.3 million annually.

Purpose: This quality improvement project aimed to reduce no-show rates through a patient-centered cardiology appointment bundle to improve continuity, patient outcomes, and efficiency.

Methods: This eight-week project utilized the Plan-Do-Study-Act …

St-Segment Resolution As A Predictor Of Short-Term Clinical Outcomes In Patients With Acute Anterior St-Elevation Myocardial Infarction After Primary Percutaneous Coronary Intervention, Mohamed Ali Nada, Eid Mohamed Daoud, Ahmed Mohamed Reda

Mansoura Medical Journal

Background: Acute anterior ST-elevation myocardial infarction (STEMI) carries a high risk of adverse outcomes despite advances in reperfusion therapy. ST-segment resolution (STR) on electrocardiography has been proposed as a simple marker of myocardial reperfusion and predictor of clinical, but its prognostic role in routine practice remains debated. Aim of the Work: To assess the efficacy of ST-segment resolution as a predictor of short-term clinical outcomes in patients with acute anterior STEMI undergoing primary percutaneous coronary intervention (PCI). Patients and Methods: A prospective observational study was conducted at Mansoura University Cardiology Department between January and June 2024. 98 patients with anterior …

Loneliness Associates With Endothelial Dysfunction In A Community-Based Cohort: A Pilot Study And Translational Approach, Yvonne Baumer, Brian A. Tirado, Lola R. Ortiz-Whittingham, Andrew S. Baez, Cristhian A. Gutierrez-Huerta, Laurel G. Mendelsohn, Abhinav Saurabh, Joshua A. Jacobs, Marcus R. Andrews, Valerie M. Mitchell, Billy S. Collins, Antwan Jones, Danielle M. Schwartz, Anca D. Dobrian, Michael V. Stanton, Tiffany M. Powell-Wiley

Department of Biomedical and Translational Sciences Faculty Publications

Loneliness is known to be an important contributor to cardiovascular disease (CVD). However, little is known about the impact of loneliness on endothelial barrier integrity, a crucial hallmark of CVD development and progression. In this study, we aimed to investigate how loneliness might impact the endothelium. We found greater perceived loneliness associated with the product of circulating epinephrine and TNFα (E/T), which, in turn, associated with lower VE-cadherin on endothelial cells in an ex vivo experiment. Additionally, circulating plasma levels of soluble VE-cadherin were associated significantly with subclinical CVD. To explore the mechanistic aspects of these associations, we measured the …

Iatrogenic Ventricular Septal Defect After Transcatheter Aortic Valve Implantation: A Rare Complication, Muhammad Sabri, Hussam Al Hennawi, Shayan Qadir, Lucy Checchio, Chaitra Janga, Hamza Muhammadzai, Donald C. Haas

Abington Jefferson Health Papers

Iatrogenic ventricular septal defect (VSD) is a rare complication following transcatheter aortic valve implantation (TAVI). An 83-year-old male underwent TAVI for severe aortic stenosis (AS) and was diagnosed with a peri-membranous VSD on echocardiography, which was not evident on pre-procedural imaging. This case highlights the risk factors, symptoms, diagnosis, and management of iatrogenic VSD following TAVI.

What Makes An Effective Chief Of Pediatric Cardiology: Insights From Chiefs Of North American Pediatric Programs, Michael E. Kim, Wayne Franklin, Anne M. Dubin, Jeffrey J. Kim, Shubhayan Sanatani, R. Krishna Kumar, Shubhika Srivastava, Thomas R. Kimball, Mark Lewin, Joseph Rossano, Colin J. Mcmahon

Department of Medicine Faculty Papers

BACKGROUND: Although the position of a pediatric cardiology chief is often seen as the apex of one's academic career, its roles, responsibilities, and qualifications are not well defined in the literature. This study was done to gain further insight of the role and attributes of a pediatric cardiology chief by surveying those who are currently serving the position across North American centers.

METHODS AND RESULTS: This was a mixed-methods study with a survey given to North American pediatric cardiology chiefs at programs with fellowship training programs. The survey was a semistructured questionnaire that was independently reviewed by 3 cardiologists. Smaller …

High Reliability Pediatric Heart Centers: Always Working Toward Getting Better, Andrea Torzone, Alexandra Birely

2024

QUALITY

Background
As provision of care reaches a new complexity in pediatric cardiology, programs are called upon to evaluate how they can bring their teams into the future of pediatric cardiac care. High reliability principles support high-quality care and improve outcomes, thus should be embraced to guide continuous improvement. Although much has been written about high reliability in healthcare, it has not been explored within pediatric heart centers. The purpose of this review is to examine high reliability through the lens of a contemporary pediatric heart center, elaborating on key concepts and proposed considerations for maintaining a high reliability heart …

A Vascular Puzzle: Identifying High-Output Heart Failure In A Patient With End-Stage Renal Disease And A Fresh Arteriovenous Fistula, Carlos Luis Alejos Aguero, Khiem Ng, Jennifer Rojas Huen, Liza Salloum, James Stone

Research Colloquium

Introduction: We present a case highlighting high-output heart failure secondary to an acquired arteriovenous fistula for dialysis. High-output cardiac failure is a less common form of heart failure characterized by the heart pumping an increased volume of blood but failing to meet the body's metabolic demands.

Case presentation: A 74-year-old female with a history of hypertension, dyslipidemia, type 2 Diabetes, and end-stage renal disease (ESRD) on hemodialysis via a left arteriovenous fistula. She presented with worsening dyspnea over 2-3 months, initially relieved post-dialysis but progressing to dyspnea at rest, orthopnea, and paroxysmal nocturnal dyspnea despite dialysis compliance. Physical exam revealed …

Systemic Arterial Function After Multisystem Inflammatory Syndrome In Children Associated With Covid-19, Ketaki Mukhopadhyay, Marla S. Johnston, James S. Krulisky, Shengping Yang, Thomas R. Kimball

School of Medicine Faculty Publications

Introduction: Multisystem inflammatory syndrome in children (MIS-C) is a new disease entity occurring in the pediatric population two to six weeks after coronavirus exposure due to a systemic arteritis. We investigated post-hospital-discharge arterial function at short- and mid-term intervals using pulse wave velocity. We assessed associations between arterial function, left ventricular diastolic and systolic function and left ventricular mass. Materials and methods: Retrospective data collection was carried out on 28 patients with MIS-C with at least two outpatient pediatric cardiology clinic visits post hospital admission. The patients underwent assessment of systemic arterial function and cardiac function. Data included pulse wave …

A “Fishy” Situation, Rare Pathogen And Presentation In Prosthetic Valve Infective Endocarditis, Nichole Schtupak, Patrick Kennedy, Darko Pucar, Linda Godinez, Jodi-Ann Chin, Kristen Selema, Dipan Uppa, Antonio Lewis, Marcelo Helguera

DMSc Student Publications

Lactococcus garviae (L. garviae) is a gram-positive coccus belonging to the Streptococcaceae family. While primarily a pathogen in fish farms causing hemorrhagic sepsis, it can act as a rare opportunistic pathogen in humans. A 2021 case report by Bravo et al. documented less than 30 cases of infective endocarditis caused by L. garviae worldwide at that time. This case report describes the 27th documented case globally and 7th documented case in the USA of L. garviae causing infective endocarditis of a prosthetic valve.
L. garviae is found in unpasteurized dairy products, raw fish, and meat (pork, beef, and …

Mitochondria Regulate Proliferation In Adult Cardiac Myocytes, Gregory B Waypa, Kimberly A Smith, Paul T Mungai, Vincent J Dudley, Kathryn A Helmin, Benjamin D Singer, Clara Bien Peek, Joseph Bass, Lauren Nelson, Sanjiv J Shah, Gaston Ofman, J Andrew Wasserstrom, William A Muller, Alexander V Misharin, G R Scott Budinger, Hiam Abdala-Valencia, Navdeep S Chandel, Danijela Dokic, Elizabeth Bartom, Shuang Zhang, Yuki Tatekoshi, Amir Mahmoodzadeh, Hossein Ardehali, Edward B Thorp, Paul T Schumacker

Faculty, Staff and Student Publications

Newborn mammalian cardiomyocytes quickly transition from a fetal to an adult phenotype that utilizes mitochondrial oxidative phosphorylation but loses mitotic capacity. We tested whether forced reversal of adult cardiomyocytes back to a fetal glycolytic phenotype would restore proliferative capacity. We deleted Uqcrfs1 (mitochondrial Rieske iron-sulfur protein, RISP) in hearts of adult mice. As RISP protein decreased, heart mitochondrial function declined, and glucose utilization increased. Simultaneously, the hearts underwent hyperplastic remodeling during which cardiomyocyte number doubled without cellular hypertrophy. Cellular energy supply was preserved, AMPK activation was absent, and mTOR activation was evident. In ischemic hearts with RISP deletion, new cardiomyocytes …