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Ronald Mariani, EMT-P is a research associate at the Cedars-Sinai Heart Institute. As a retired fire paramedic and captain in the Portland Fire Bureau, he functions as liaison to the collaborating Emergency Medical Services agencies and the Oregon State Medical Examiner Office. He also maintains current protocols with the participating Oregon hospital IRBs.

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Sharon Mariani coordinates and manages the recruitment and sample procurement process of the study participants and oversees administrative aspects.

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Hripsime Martirosyan, MD, MPH is a Clinical Research Associate at the Cedars-Sinai Heart Institute. She is a medical doctor from Armenia with training and experience in public health and clinical research. She is coordinating implementation of the PRESTO study in Ventura County.  

Daniel A. Perez, BS is a research assistant and biobank coordinator for the Chugh Lab at the Cedars-Sinai Heart Institute. He is also actively involved in the PRESTO Ventura study. Perez joined the Chugh Lab in 2014 and came with a background in molecular biology and genomics.

Derek Phan, MD is an internal medicine resident at Cedars-Sinai being mentored in the Chugh Lab. He received his bachelor's degree from the University of California, Riverside and medical degree from the University of California, Los Angeles. Phan is currently involved in looking at ECG predictors of sudden cardiac death.

Arayik Sargsyan, MD, MPH is a Clinical Research Associate at the Cedars-Sinai Heart Institute. He is a surgeon from Armenia with training and experience in public health and clinical research. He is coordinating implementation of PRESTO in Ventura County.

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Reshmy Sandeep, MD is an anesthesiologist and a research post-doctoral fellow in the program. She is involved in clinical phenotyping projects related to sudden cardiac death.

Audrey Uy-Evanado, MD is a cardiologist and research associate at the Cedars-Sinai Heart Institute. She leads the patient recruitment and phenotyping efforts for the Oregon SUDS.

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directs the Arrhythmia Research Program at the Cedars-Sinai Heart Institute. He is also the Pauline and Harold Price Professor of Cardiac Electrophysiology, Driector of the Heart Rhythm Center and Associate Director of the Heart Institute at Cedars-Sinai Los Angeles; and Professor of Medicine-in-Residence at the David Geffen School of Medicine at UCLA. Dr. Chugh’s scientific career has been dedicated to understanding the etiology and mechanisms of sudden cardiac death in the community, with the goal of improving management and prevention. For this purpose, he founded the Oregon Sudden Unexpected Death Study (Oregon SUDS) in 2002 which was expanded to the PRESTO (PREdiction of Sudden death in mulTi-ethnic cOmmunities) Network in 2015. The mechanisms as well as clinical, plasma and genomic biomarkers the Arrhythmia Resaearch Program continues to identify, are being explored as tools to enhance management and prevention of sudden cardiac death.

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Carmen Teodorescu, MD, PhD is a project scientist at the Cedars-Sinai

Heart Institute. She is a physician from Romania with a doctorate degree in nutrition science from Auburn University and a graduate certificate in clinical research from Oregon Health and Science University. Her research interests focus on mechanisms of pulseless electrical activity.

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Jo A. Ayala, BS is a research associate and coordinates the core biobank processing laboratory for the Oregon SUDS in Portland, Oregon. She graduated from the University of Texas at El Paso with a bachelor's degree in microbiology and a minor in chemistry.

Aapo Aro, MD, PhD is a visiting post-doctoral fellow and cardiologist from Finland. His research interests focus on identifying electrical mechanisms with a view to improving prediction of sudden cardiac death.

Kelvin Chua, MD is a cardiologist from Singapore who has embarked on a combined clinical electrophysiology fellowship and cardiac research program at the Cedars-Sinai Heart Institute. He has a keen interest on the electrocardiographic predictors of sudden cardiac death as well as sudden cardiac death in the seizure population.

Navid Darouian, MD is an internal medicine resident at Cedars-Sinai Medical Center and member of the research team in the Chugh Lab. His area of focus is on electrocardiographic findings in the sudden cardiac death populations.  

Sandeep Nair, MD is a clinical cardiac electrophysiologist from India and a post-doctoral fellow in the program. He is working on projects related to sudden cardiac death with a special focus on cardiac pathology and novel histopathological aspects of sudden coronary death.

Kyndaron Reinier, PhD, MPH is a research scientist at the Cedars-Sinai Heart Institute and lead epidemiologist for the Oregon SUDS. She received her doctorate in epidemiology and Master of Public Health at the University of California Berkeley, School of Public Health. Her research interests include social, demographic, and clinical predictors of sudden cardiac arrest.

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Research Team


Sumeet S. Chugh, MD, FACC, FHRS, FAHA

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