Latest News


Journal Club - #3

Simultaneous Biatrial High-Density (510-512 Electrodes) Epicardial Mapping of Persistent and Long-Standing Persistent Atrial Fibrillation in Patients: New Insights Into the Mechanism of its Maintenance

Seungyup Lee, Jayakumar Sahadevan, Celeen M. Khrestian, Ivan Cakulev, Alan Markowitz, Albert L. Waldo

Circulation. 2015;132:2108-2117 [PubMed]

Journal Club - #2

Atrial Fibrillation driven by micro-anatomic intramural re-entry revealed by simultaneous sub-epicardial and sub-endocardial optical mapping in explanted human hearts

Brian J. Hansen, Jichao Zhao, Thomas A. Csepe, Brandon T. Moore, Ning Li, Laura A. Jayne, Anuradha Kalyanasundaram, Praise Lim, Anna Bratasz, Kimerly A. Powell, Orlando P. Simonetti, Robert S.D. Higgins, Ahmet Kilic, Peter J. Mohler, Paul M.L. Janssen, RaulWeiss, John D. Hummel, and Vadim V. Fedorov

Journal Club - #1

Mapping Cardiac Pacemaker Circuits: Methodologica Puzzles of the Sinoatrial Node Optical Mapping

Igor R. Efimov, Vadim V. Fedorov, Boyoung Joung, Shien-Fong Lin

Circulation Research. 2010;106:255-271 [PubMed]



BME Journal Club Meeting - 3/7/2016 @ 10AM - SEH Room 2000

Human Organotypic Cultured Cardiac Slices: New Platform for High Throughput Preclinical Human Trials

Chaoyi Kang is a BME Ph.D. student in the Efimov Cardiovascular Engineering Lab. His research entails investigating the remodeling of sympathetic pathways in adult human hearts that occur during heart failure. To that end, he has developed a novel technology for rapid electrophysiology phenotyping of human cardiac tissue.

DATE: Monday, March 7th, 2016
TIME: 10:00-10:30 AM
PLACE: SEH Room 2000

Trivia #1

There are about 3 million people in the world with pacemakers with 600,000 pacemakers implanted each year. It has been instrumental in significantly reducing the mortality rates in patients with cardiac rhythm disorders.

02/08/2016 10:00 AM - Biomedical Engineering Department Journal Club. SEH 2000

OptoDyCE: Automated system for high-throughput all-optical dynamic

Aleks Klimas is a BME Ph.D. student in the Cardiac Optogenetics and Optical Imaging Lab. Her primary focus is developing imaging systems that employ optogenetics to optically control and measure electrical activity of the heart.


New NIH grant is funded!

Our new collaborative NIH grant 1R01HL126802 is funded starting January 1, 2016! This is a collaboration with Professor Natalia Trayanova from Johns Hopkins University and Professor Julia Gorelik from the Imperial College London. Grant is titled: "EXPLORATION OF ARRHYTHMOGENIC TRIGGERS AND SUBSTRATES IN HEART FAILURE". First year budget is $757,771. We are looking forward to this exciting scientific collaboration with Trayanova and Gorelik labs.

Welcome to the Efimov lab!

Welcome to the new web-site of the Efimov laboratory in the Department of Biomedical Engineering at the George Washington University in Washington, DC. We are located in the heart of the United States capital, just few blocks from the White House. All these pictures were taken within a short walk from our laboratory.

Our Lab Family Grows


Gus Xavier Gloschat was born to Christopher and Lana Gloschat this morning at 4:07 AM. He was 9 days late and weighed 7 pounds 13 ounces. We are happy to announce that both Gus and Lana are happy and healthy.