Cardiology Commons^™

Hemodynamic Characterization Of Cardiac Dysfunction After Traumatic Brain Injury Using A Controlled Cortical Impact Model In Male Rats, Preston So, Amit Iyengar, Noah Weingarten, Mrinal Patel, Jessica Dominic, Andrew Belec, Joyce Ho, Samuel Shin, Pavan Atluri

Division of Cardiology Faculty Papers

Traumatic brain injury (TBI) is associated with cardiovascular dysfunction that worsens clinical outcomes, yet the underlying mechanisms are poorly under stood. Clinical studies are limited by heterogeneity, highlighting the need for con trolled experimental models. Controlled cortical impact (CCI) provides precise control of injury severity, and invasive pressure- volume (PV) loop analysis allows detailed hemodynamic assessment. Adult male Wistar rats underwent sham op eration or mild or severe CCI- induced TBI. PV- loop assessment and transtho racic echocardiography were performed at 8 or 24 h after TBI or sham. Serum epinephrine (EPI) and norepinephrine (NE) were quantified by ELISA. At …

Saudi Heart Association Scientific Statement On Cardiovascular–Kidney–Liver-Metabolic (Cklm) Syndrome, Waleed Alhabeeb, Abdulhalim J. Kinsara, Ahmed Mitwalli, Ali A. Alshehri, Faisal Aba-Alkhail, Ismail Raslan, Khalid Aljohani, Mohammed Arafah, Muthana Sahlawi, Saud Alsifri, Suleiman M. Kharabsheh

Journal of the Saudi Heart Association

Background: Cardiovascular, kidney, metabolic, and liver diseases are closely interconnected and frequently coexist. While the cardiovascular–kidney–metabolic (CKM) framework provides a unified model, increasing evidence supports a central role for hepatic disease, particularly metabolic dysfunction–associated steatotic liver disease (MASLD), in this continuum. The Saudi Heart Association (SHA) therefore aimed to introduce the cardiovascular–kidney–liver–metabolic (CKLM) syndrome as an expanded framework and provide expert guidance on its pathophysiology, staging, screening, and management, with relevance to the Saudi population.

Methods: A multidisciplinary expert panel convened under the auspices of the SHA conducted a comprehensive, non-systematic literature review and developed consensus-based recommendations through iterative discussion …

Simulating Pacemakers And Heartbeat Recovery Through Mathematical Modeling, Thomas Estrada, Jayla Edwards

Discovery Day - Daytona Beach

Title: Simulating Pacemakers and Heartbeat Recovery Through Mathematical Modeling   This study utilizes the Fitzhugh-Nagumo model to simulate cardiac electrical activity and the regulatory role of pacemakers through ordinary differential equations (ODEs). By defining the rate of change for membrane voltage, 𝑑𝑣/dt, and a recovery variable, 𝑑𝑤/dt, the model captures the heart's excitability and resting states. Central to the analysis is the stimulus current parameter, which represents the "kick" provided by a pacemaker to correct flatline conditions or weak heartbeats. Using Euler’s method for numerical integration, the research compares unstable cardiac rhythms against corrected periodic oscillations. Additionally, the project implements vector …

A Case Report Of Myocardial Infarction Complicated With Blood Pressure Fluctuations Caused By Pheochromocytoma, Huiping Li, Wei Yang, Yu Feng, You Zhang, Gan-Xin Yan, Chuanyu Gao

Department of Medicine Faculty Papers

Pheochromocytoma typically presents with sustained or paroxysmal hypertension, but initial manifestation as acute non-ST-segment elevation myocardial infarction (NSTEMI) is rare. Peri-procedural hemodynamic fluctuations are often dramatic, making diagnosis and management challenging. We report a 51-year-old male admitted with chest tightness for 17 days. Elevated troponin and coronary angiography showing multivessel disease with total occlusion of the mid-left anterior descending artery (LAD) led to a preliminary diagnosis of NSTEMI. During percutaneous coronary intervention, blood pressure surged to 240/130 mmHg; intravenous nitroprusside caused an instantaneous drop to 95/55 mmHg, with rapid rebound to >200 mmHg upon withdrawal, showing no clear temporal relationship …

Recalibrating Risk: A Call For South Asian-Focused Heart Failure Prediction Models, Nandini Nair, Dongping Du, Aiswarya J. Pillai, Swarna Mahesh, Mrudula R. Munagala, Howard J. Eisen, Balakrishnan Mahesh

Division of Cardiology Faculty Papers

Background: Heart failure (HF) represents the final common pathway of diverse cardiovascular disorders, including coronary artery disease, primary myocardial pathology, and abnormalities of cardiac conduction. These conditions arise from an interplay of genetic, environmental, and psychosocial influences, making it essential to understand these determinants to improve risk prediction and prevention. Multiple biological pathways of inflammation, fibrosis, coagulation, oxidative stress, lipid dysregulation, endothelial dysfunction, and metabolic disturbances are shaped by inherited susceptibility and modifiable exposures. Together, these mechanisms drive HF development and progression, though their relative contributions vary across populations. Methods: PubMed and Google Scholar were searched for clinical, biomedical, and …

High-Flow Nasal Cannula Oxygen Therapy Versus Standard Oxygen Therapy On Perioperative Outcomes In Patients Undergoing Transcatheter Aortic Valve Replacement, Kirsten B. Whiteside, Jacqueline M. Case

Graduate Theses, Dissertations, and Capstones

Abstract 

Background and Purpose: Transcatheter aortic valve replacement (TAVR) is increasingly performed under monitored anesthesia care (MAC) to facilitate faster recovery and reduce complications associated with general anesthesia. Standard oxygen therapy (SOT) may be insufficient in maintaining adequate oxygenation in this high-risk population. High-flow nasal cannula (HFNC) therapy has emerged as a potential alternative. This literature review evaluates the effects of HFNC compared with SOT on perioperative outcomes in patients undergoing TAVR under MAC. 

Methods: A comprehensive review of the literature was conducted to identify studies evaluating HFNC versus SOT during TAVR procedures performed under MAC. Six studies met inclusion …

An Assessment Of The Multidisciplinary Approach To Fetal Echocardiography Education, Riley Allen

Masters Projects

With congenital heart disease (CHD) being the most common birth defect, there is a growing demand for utilization of fetal echocardiography (FE). In clinical practice FE requires an interdisciplinary approach to performance and patient care, and integration of techniques from both the obstetric and pediatric cardiac areas of medicine. While practitioners align on the need for an interdisciplinary approach to practice and the specific methods of performance, there is little consensus on how to comprehensively educate the sonography workforce. Literature has identified gaps in both the obstetric and pediatric cardiac sonographer education bases, predominantly focusing on the lack of specific …

Extracorporeal Rescue In Massive Pulmonary Embolism: A Case Of Chronic Thromboembolic Pulmonary Hypertension Unveiled, Kenzo Ramos, Kari Gorder

Journal of Shock and Hemodynamics

Chronic thromboembolic pulmonary hypertension (CTEPH) is a rare yet curable cause of pulmonary hypertension from unresolved pulmonary emboli. We present the case of a 48-year-old man with progressive dyspnea and leg swelling, who was found to have bilateral pulmonary emboli with right heart strain. He developed cardiac arrest during thrombectomy, requiring emergent veno-arterial extracorporeal membrane oxygenation (V-A ECMO). Further evaluation revealed acute emboli superimposed on CTEPH. After incomplete thrombectomy and persistent instability, he underwent successful pulmonary endarterectomy with ECMO decannulation, leading to recovery of right ventricular function and discharge in stable condition. This case illustrates that previously unrecognized CTEPH may …

Personalizing Modern Heart Failure Therapy In Hfref: Bridging Evidence, Clinical Practice, And Future Perspectives, Ehsan Shahverdi, Amin Shahverdi, Sendooran Shahi, Carsten Schneider, Mathias Lange, Shadi Kamali

Journal of the Saudi Heart Association

Background

Heart failure with reduced ejection fraction (HFrEF) remains a major cause of morbidity, mortality, and healthcare utilization worldwide despite substantial therapeutic advances. Over the past three decades, randomized clinical trials have established four foundational pharmacologic pillars of guideline-directed medical therapy (GDMT): renin–angiotensin system inhibition or angiotensin receptor–neprilysin inhibition, evidence-based beta-blockers, mineralocorticoid receptor antagonists, and sodium–glucose cotransporter 2 inhibitors. However, real-world implementation of these therapies remains suboptimal.

Objectives

To provide a contemporary state-of-the-art review of current evidence supporting GDMT in HFrEF, examine unresolved challenges in sequencing and optimization, and propose a practical phenotype-based framework to support individualized treatment decisions

. …

Candida Albicans Purulent Pericarditis Complicated By Cardiac Tamponade In A Critically Ill Burn Patient: A Case Report, Mutaz Althobaiti, Abdulrahman Alqahtani, Faisal Alanazi, Mohammad S. Alotaibi, Ibrahim Bahabri, Shikah Alsuwaid, Turki Almutairi, Fawaz Almutairi

Journal of the Saudi Heart Association

Candida pericarditis is a rare, life-threatening complication of invasive candidiasis, associated with high mortality.

We report this case of a young woman with 60% body surface area burn, multidrug-resistant polymicrobial sepsis, and multiorgan failure who developed Candida albicans pericarditis complicated by cardiac tamponade. Despite urgent pericardiocentesis and escalation of antifungal therapy, she ultimately progressed to refractory shock and multiorgan failure.

This case illustrates the diagnostic challenge and therapeutic limitations of fungal pericarditis in critically ill host, and underscores the importance of maintaining a high index of suspicion in burn patients with multisite Candida colonization and prolonged antibiotic exposure.

Neural-Immune-Cardiovascular Axis: From Mechanistic Crosstalk To Therapeutic Targets In Cardiovascular Disease, Junkang Cheng, Shuang Gao, Haowei Zhang, Wei Gao, Zeyuan Mei, Xiaoling Liu, Jocelyn Gao, Chenghu Guo, Guipeng An

Student Papers, Posters & Projects

The neural-immune-cardiovascular axis represents an emerging and highly integrated physiological and pathophysiological concept, describing a complex bidirectional communication network between the nervous, immune, and vascular systems. This review systematically examines the pivotal role of this axis in maintaining cardiovascular homeostasis and in the pathogenesis of cardiovascular diseases. We first provide an overview of the fundamental signaling pathways between the components of this axis. Subsequently, we delve into the specific crosstalk mechanisms within the axis in the context of major cardiovascular conditions, including atherosclerosis, hypertension, and heart failure. A central focus is placed on critically evaluating the potential therapeutic targets and …

Position Statement By The Saudi Heart Failure Working Group Of The Saudi Heart Association On The Management Of Advanced Heart Failure In Saudi Arabia, Ibrahim Jelaidan, Abeer Bakhsh, Ammar G. Chaudhary, Ebtisam Alkhattaby, Fahmi Alkaf, Feras Khaliel, Ismail Raslan, Mohammed Alreshidan, Mosaad Alhussein, Waleed Alhabeeb

Journal of the Saudi Heart Association

Background: Heart failure (HF) is a leading cause of morbidity and mortality in Saudi Arabia. Despite remarkable progress in guideline-directed medical therapy, a significant proportion of patients progress to advanced HF and require evaluation for heart transplantation or mechanical circulatory support (MCS). In response to this growing burden, the Saudi Heart Association (SHA) developed recommendations to guide identification, timely referral, and optimal management of candidates for advanced HF therapies in Saudi Arabia.

Methods: A multidisciplinary panel of 10 HF experts from Saudi Arabia convened for a series of structured virtual meetings to review local and international evidence. The panel integrated …

Left Atrial Appendage Mimicking Coronary Aneurysm And Thrombus On Echocardiography In A Child With Kawasaki Disease, Anhar Ali Baeshen, Riad Abouzahr, Jameel Alata

Journal of the Saudi Heart Association

Background: The left atrial appendage (LAA) is an embryologically distinct structure with anatomical features that may mimic pathological findings on echocardiography. In Kawasaki disease, this resemblance can cause diagnostic confusion with coronary artery aneurysm or thrombus.

Clinical presentation: A 7-year-old boy presented with fever lasting more than five days and cervical lymphadenopathy following a viral illness. Kawasaki disease was suspected. Transthoracic echocardiography suggested an abnormality of the left coronary artery with possible thrombus, and the patient was started on aspirin, clopidogrel, and apixaban. Coronary computed tomography angiography demonstrated normal coronary origins, course, and caliber, confirming the suspected lesion to be …

Correlation Between Aortic Valve Area Measured By Cardiac Computed Tomography And Transthoracic Echocardiography In Patients With Aortic Stenosis, Shehroz Sultan, Neeraj Joshi, Ali Haider Awan, Shabana Kauser, Hafsa Malik Aulakh, Bilal Ghafoor, Muhammad Ammar Ajmal, Abida Perveen, Jahanzeb Malik

Journal of Community Hospital Internal Medicine Perspectives

Background: Accurate assessment of aortic valve area (AVA) is essential for determining the severity of aortic stenosis (AS) and guiding clinical management. Transthoracic echocardiography (TTE) is the standard first-line imaging modality, while cardiac computed tomography (CT) provides direct anatomical planimetry and may offer complementary information in selected patients.

Objective: To evaluate the correlation and agreement between CT-derived and TTE-derived AVA measurements and to examine their association with clinical outcomes in patients with AS.

Methods: This single-center retrospective cohort study included 1,857 consecutive adults with moderate to severe AS who underwent both TTE and cardiac CT at the Rawalpindi Institute of …

Clinical Characteristics, Microbiology, And In-Hospital Outcomes Of Infective Endocarditis At A Tertiary Cardiac Center In Saudi Arabia: A Retrospective Cohort Study, Hussain M. Alhassan, Zainab A. Al Hubail, Zahra Maruf Alshakhs, Sireen Omar Takrouni, Fatimah Alawi Al Hussain, Hussain Abdullah Alqahtani, Ammar Ahmed Binammar, Beenish Mukhtar, Muhammad Azam Shah

Journal of the Saudi Heart Association

Background: Infective endocarditis (IE) carries high morbidity and mortality, and its epidemiology in Saudi Arabia reflects a transition in which rheumatic and prosthetic valve disease coexist. Contemporary single-center data describing the clinical profile, microbiology, and in-hospital outcomes of IE in this setting remain limited.

Methods: We conducted a retrospective cohort study at a tertiary cardiac center in Riyadh, Saudi Arabia, including 102 patients with IE diagnosed between October 2020 and December 2024, classified using the modified Duke criteria. Variables were analyzed descriptively. Proportions are reported with 95% confidence intervals (CI; Wilson method) against the number of patients with available data, …

Premature Ventricular Contractions As A Result Of Subacute Myocarditis In A Professional Football Player, Charlotte Pirquet, Daniel Underberg, Brian Osler, Derek Schwabe-Warf, David Shipon

Department of Medicine Faculty Papers

BACKGROUND: Return-to-play (RTP) decisions for professional athletes with arrhythmias are challenging, particularly when the diagnosis is uncertain.

CASE SUMMARY: A 33-year-old professional football player presented for RTP evaluation of premature ventricular contractions (PVCs) and atypical chest pain. Work-up was significant for fragmented R waves and PVCs on electrocardiogram as well as late gadolinium enhancement on cardiac magnetic resonance imaging. Positron emission tomography scan was normal. These findings suggested possible subacute myocarditis. He elected to rest for 2 to 3 months and was treated with guideline-directed medical therapy. Risk stratification highlighted increased risks associated with late gadolinium enhancement and incomplete genetic …

Prevalence Of Cerebrovascular Disease In Patients With Coronary Artery Disease After Pharmacological Stress Test, Eman Mahmoud Abdelfattah, Muhammad Salem Muhammad Hagrass, Khalid Ahmed Elkhashab, Sameh Emil, Hassan Mohamed Ebeid, Lamya Salih, Najah Makhbout Al-Amri, Mostafa Sayed, Haytham Soliman Ghareeb

Journal of the Saudi Heart Association

Objectives: Coronary artery disease (CAD) and cerebrovascular disease (CVD) share common atherosclerotic pathways. However, the clinical significance of headache absence during stress testing remains unexplored. We investigated whether the absence of headache during pharmacological stress testing reflects the presence of subtle cerebrovascular atherosclerosis detectable by transcranial Doppler ultrasonography (TCD).

Methods: This cross-sectional study enrolled 225 patients with CAD undergoing pharmacological stress testing with TCD and myocardial perfusion imaging (MPI) at centers in Egypt (Cardiology Department, Fayoum University). Patients were stratified by headache status during stress testing. Multivariate logistic regression and receiver-operating characteristic (ROC) analysis identified independent predictors of abnormal TCD …

Depression And Anxiety In Pulmonary Hypertension Associated With Congenital Heart Disease: Pathophysiology And Clinical Implications Of The Heart–Brain Axis, Nicodemus N. Triatmojo, Valerinna Y.S. Putri

Journal of the Saudi Heart Association

Pulmonary hypertension associated with congenital heart disease or PH-CHD is an increasingly prevalent disorder in modern cardiology. It is characterized by progressive pulmonary vascular remodeling, chronic right ventricular (RV) pressure overload, and abnormal cardiopulmonary hemodynamic. Due to advances in congenital cardiology and treatments for pulmonary hypertension, survival rates have increased. As a result, the focus has switched to long-term functional status and quality of life. Depression and anxiety are currently recognized as prevalent and clinically significant manifestations in PH-CHD; nonetheless, they remain underdiagnosed and undertreated within cardiovascular care frameworks.

More study shows the disease's severity or symptom count cannot explain …

Efficacy Of Sirolimus Versus Paclitaxel-Coated Balloons For Coronary Revascularization: An Updated Meta-Analysis With Grade Assessment, Matthew Aldo Wijayanto, Christopher Daniel Tristan, Erlangga Masykur Kynaya, Annisa Aghnia Rahma, Putri Saskia Harimurti, Arwin Saleh Mangkuanom, Amir Aziz Alkatiri, Doni Firman, Bambang Budi Siswanto

Journal of the Saudi Heart Association

Drug-coated balloons are an emerging strategy for coronary revascularization. Despite their increasing use, the comparative efficacy of sirolimus- versus paclitaxel-coated balloons (SCB vs PCB) remains uncertain. This updated meta-analysis evaluated clinical and angiographic outcomes of SCB and PCB in percutaneous coronary intervention (PCI). A comprehensive search of PubMed, Scopus, and ScienceDirect was performed on August 28, 2025. Studies directly comparing SCB and PCB were included. The primary endpoint was target lesion failure (TLF), which was defined as cardiac death, target vessel myocardial infarction (TVMI), or target lesion revascularization (TLR). On follow-up angiography, secondary endpoints consisted of minimal lumen diameter (MLD), …

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 …

Prenatal Predictors Of Fetal And Neonatal Death In Truncus Arteriosus: A Fetal Heart Society Research Collaborative Study., Kelly Cox, Nazia Husain, Deidra Ansah, Tiffany Knight, Alexandra Channing, Bettina Cuneo, Preeta Dhanantwari, Mary Donofrio, Miwa Geiger, Lisa Howley, Lisa K. Hornberger, Simone Javeri, Edward G. Jones, Michelle Kaplinski, Ann Kavanaugh-Mchugh, Maria Kiaffas, Katherine Kosiv, Christina Laternser, Olivia Low, Anita J. Moon-Grady, Shabnam Peyvandi, Nelangi Pinto, Avaliese Porlier, Aaron Prosnitz, Rashmi Rao, David Schidlow, Elena Sinkovskaya, Ranjini Srinivasan, Corey Stiver, Emilio Quezada, Bhawna Arya, Sheetal Patel

Manuscripts, Articles, Book Chapters and Other Papers

BACKGROUND: Fetal and neonatal outcomes and factors increasing mortality risk in fetal truncus arteriosus are not well characterized. We aimed to examine the prenatally encountered cardiac spectrum, define extracardiac and genetic associations, explore clinical outcomes and identify prenatal factors associated with worse outcomes in a contemporary large cohort.

METHODS: A multicenter retrospective cohort study was conducted via the Fetal Heart Society Research Collaborative including fetal truncus arteriosus cases encountered between January 1, 2010, and September 1, 2021, within 22 North American cardiac centers. Demographic, clinical, anatomic, and functional fetal echocardiographic variables were analyzed for associations with presurgical death (fetal death/neonatal …

Greater Weekly Exercise Volume Is Associated With Lower Prevalence Of Metabolic Comorbidities, Psychiatric Conditions, And Exertional Symptoms In Youth Athletes Undergoing Pre-Participation Screening: An Observational Study, Grace Qiu, Seong Kyu Kim, Douglas Corsi, Alexander G. Hajduczok, Imran Masood, Daniel Underberg, Brian Osler, Drew Johnson, David Shipon

Division of Cardiology Faculty Papers

INTRODUCTION: Physical activity has been associated with improved cardiovascular health outcomes in adults. However, the specific associations between physical activity volume and cardiovascular outcomes in youth athletes are less defined.

METHODS: This study analyzed data from the HeartBytes National Youth Database, compiled from Simon's Heart. Simon's Heart is a nonprofit organization that includes information from sports pre-participation examinations for adolescents. The dataset encompasses demographics, electrocardiogram (ECG) findings, and exercise-related symptoms. Youth athletes' self-reported weekly physical activity volume was classified into four levels: < 2 h, 2-5 h, 5-10 h, and >10 h, with less than 2 h taken as the reference group. Given the physical diMerences among athletes …

Ct-Derived Epicardial Adipose Tissue Density And Its Association With Systemic Inflammation And Functional Impairment In Heart Failure With Preserved Ejection Fraction: A Prospective Cross-Sectional Study From Oman, Arif Albulushi, Ahmed Tawfek, Ahmed Basuoni

Journal of the Saudi Heart Association

Background: Heart failure with preserved ejection fraction (HFpEF) is strongly influenced by cardiometabolic comorbidity and systemic inflammation. Epicardial adipose tissue (EAT) is a biologically active visceral fat depot in direct contact with the myocardium, and CT-derived EAT density (attenuation) may reflect inflammatory adipose remodeling beyond adipose quantity alone. However, the clinical relevance of EAT density in HFpEF remains uncertain.

Objectives: To evaluate the association of CT-derived EAT density with systemic inflammatory biomarkers, functional capacity, health status, and echocardiographic indices of HFpEF severity in a prospective cross-sectional cohort.

Methods: In a prospective cross-sectional study conducted between January and July 2024 at …

Proteogenomics Of Hypertrophic Cardiomyopathy Reveals Subtype-Specific Therapy, Ke Ma, Jie Yang, Hongchang Guo, Ping Li, Xiaowei Li, Zhujun Dong, Jing Zhang, Congcong Zhang, Pengli Yang, Chongpei Hua, Shuolin Zhu, Guoqing Li, Jianchao Zhang, Ningyu Ding, Jizheng Wang, Xin-Liang Ma, Zhuofeng Lin, Jianzeng Dong, Yang Li, Yulin Li

Department of Emergency Medicine Faculty Papers

BACKGROUND: Hypertrophic cardiomyopathy (HCM) is a heterogeneous disease with diverse prognosis. The underlying mechanisms remain unknown, resulting in limited risk stratification and therapeutic strategies. This study aimed to elucidate molecular subtypes of HCM through integrated proteogenomic analysis and explore subtype-specific therapeutic strategies.

METHODS: We conducted an integrated proteogenomic analysis of 132 patients with HCM using myocardial samples, incorporating whole-exome sequencing, RNA sequencing, and proteomics. Unsupervised clustering was used to identify HCM subtypes, which were validated in heart tissues and human induced pluripotent stem cell-derived cardiomyocytes from 2 independent HCM subsets. Subtype-specific signatures and pathways were explored, and their causal link …

Donor-Derived Cell-Free Dna As A Prognostic Biomarker After Heart Transplantation: The Define-Ht Study, Palak Shah, Paul J. Kim, Kelly H. Schlendorf, David A. Baran, Monica M. Colvin, Adam D. Devore, Howard Eisen, Kambiz Ghafourian, Michael M. Givertz, Eileen Hsich, Jaime L. W. Kennedy, Evan P. Kransdorf, Jose N. Nativi-Nicolau, Jignesh Patel, Eleni Tseliou, Omar Wever-Pinzon, Andrew Doud, Michelle S. Bloom, Sandra A. Carey, Navchetan Kaur, D Giovanni Biagini, Kyle E. Marshall, Michael Olympios, Mandeep R. Mehra, Josef Stehlik

Department of Medicine Faculty Papers

BACKGROUND: Measurement of donor-derived cell-free DNA fraction (dd-cfDNA%) and donor quantity score (DQS) is a noninvasive biomarker of acute rejection in heart transplantation (HT). Its prognostic value beyond histopathology remains uncertain.

OBJECTIVES: This study sought to evaluate associations between donor-derived cell-free DNA (dd-cfDNA) and clinically meaningful outcomes using a composite endpoint of treated rejection, graft dysfunction, retransplantation, or death within 1 year post-HT.

METHODS: The DEFINE-HT (Development of Noninvasive Cell-free DNA to Supplant Invasive Biopsy in Heart Transplantation) was a prospective, observational study following adult HT recipients at 10 U.S. centers for 1-year post-HT; blood was collected for dd-cfDNA testing …

Regional Hemodynamic Characterization Of The Thoracic Aorta Using 4d Flow Mri: A Single-Center Pilot Study, John H. Major

Summer Research Program Abstracts

No abstract provided.

Immediate Postoperative Pacing Dependency Is Not Associated With Worse Mid-Term Survival In Redo Mitral Valve Surgery, Devon Kelley, Joyce Ho, Andrew Belec, Takahiro Tashima, Victoria Li, James Lao, Varun Kathawate, Kazuhiro Ueno, Amit Iyengar, Jessica Dominic, Pavan Atluri

Division of Cardiology Faculty Papers

Risk factors (RF) for permanent pacemaker (PPM) placement in cardiac surgery include valvular operations and redo operations. We aim to identify RF for PPM placement prior to discharge (DC) specifically among redo mitral valvular operations, and to analyze outcomes in this population. Our retrospective review considered 943 patients undergoing redo MV operations between 01/2002 and 12/2021, excluding patients experiencing in-hospital death within 48 hours of their operation and patients with existing PPM or implanted cardiac defibrillator (ICD). Patients (n = 742) were categorized based on whether they received a PPM before DC or not. Of the 742 patients analyzed, 47 …

In Vivo Evidence Of Blood Flow Slippage: Failure Of The No-Slip Boundary Condition Assumption, Alena Jarolímová, Jaroslav Hron, Karel Tůma, Radomír Chabiniok, Josef Málek, Keshava Rajagopal

Division of Cardiology Faculty Papers

The assumption that blood adheres to vessel walls with zero tangential velocity component, the so-called "no-slip" boundary condition, is a foundational premise of cardiovascular fluid dynamics. Whether the no-slip condition holds in vivo, however, remains unknown. Seven healthy adult volunteers underwent cardiovascular magnetic resonance imaging. With four-dimensional flow magnetic resonance imaging of the descending thoracic aorta and modeling blood as a Navier-Stokes fluid, near-wall blood velocities were quantified, and wall shear stress was calculated based on the measured velocity fields. Within the Navier-Stokes data assimilation framework, tangential wall velocities of ∼30-80% of the mean luminal velocity were consistently obtained. These …

How To Assess Ventricular Function By Fetal Echocardiography: Expert Guidance From The Fetal Heart Society., S R Patel, Nitin Madan, L Eckersley, Z Roytman, M Perez, L Gindes, L K Hornberger

Manuscripts, Articles, Book Chapters and Other Papers

No abstract provided.

Determinants Of Early Mortality After Congenital Heart Surgery: A 7-Year Single-Center Experience In Saudi Arabia, Saud Abdulaziz Bahaidarah, Jowana Mahmoud Aljinaid, Amal Ahmad Alzahrani, Jana Mohammad Banjer, Lujain Abdulsalam Kofiyah, Nesmah Amin Noaman, Rahaf Adel Badkook, Raghad Abdulaziz Aljabri, Raghad Saeed Alghamdi, Renad Mohammed Alamoudi, Sarah Salem Bawazir, Gaser Abdelmohsen Abdelmohsen

Journal of the Saudi Heart Association

Objectives:

To determine predictors of early mortality among pediatric patients undergoing congenital heart surgery at a tertiary care center in Saudi Arabia.

Methods:

This retrospective cohort study included 955 pediatric patients who underwent congenital heart surgery at King Abdulaziz University Hospital, Jeddah, between January 2017 and December 2023. Demographic, clinical, operative, and postoperative variables were collected.

Results:

Overall mortality was 4.9%. Mortality was higher among neonates and infants and among patients with RACHS categories 4–6. Non-survivors had longer cardiopulmonary bypass times and more frequent delayed chest closure. Postoperative complications, including the need for extracorporeal membrane oxygenation (ECMO), depressed cardiac function, …