Atrial Fibrillation

Atrial fibrillation (or flutter) is an irregular and fast heartbeat that prevents blood from flowing properly throughout the body.

The specialists in the CardioVascular Center at Tufts Medical Center in downtown Boston specialize in treating atrial fibrillation and other heart rhythm disorders. We provide a wide range of treatment options including medical therapy, ablation treatment, pacemakers and implantable cardiac defibrillators (ICDs).

Programs + Services


New England Cardiac Arrhythmia Center

The New England Cardiac Arrythmia Center uses innovative methods to treat heart rhythm disorders. Learn more about our personalized care and book an appointment today.
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WATCHMAN Device

WATCHMAN is a permanent implant that offers an alternative to the lifelong use of blood thinners and the Cardiovascular team at Tufts MC is prepared to help with this form of care for afib.
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Doctors + Care Team

Ann Garlitski, MD

Ann Garlitski, MD

Accepting New Patients

Title(s): Co-Director, New England Cardiac Arrhythmia Center; Assistant Professor, Tufts University School of Medicine
Department(s): Medicine, CardioVascular Center, Cardiology
Appt. Phone: 617-636-5939
Fax #: 617-636-9115

Cardiac arrhythmias

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Christopher Madias, MD

Christopher Madias, MD

Accepting New Patients

Title(s): Director, Cardiac Arrhythmia Center
Department(s): Medicine, CardioVascular Center, Cardiology
Appt. Phone: 617-636-5902
Fax #: 617-636-9115

Cardiovascular disease, cardiac electrophysiology, WATCHMAN

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picture of Douglas Laidlaw, MD

Douglas Laidlaw, MD

Accepting New Patients

Title(s): Cardiologist; Assistant Professor, Tufts University School of Medicine
Department(s): Medicine, CardioVascular Center, Cardiology
Appt. Phone: 617-636-9488
Fax #: 617-636-9115

Electrophysiology, pacemaker services

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Jonathan Weinstock, MD

Jonathan Weinstock, MD

Accepting New Patients

Title(s): Co-Director, New England Cardiac Arrhythmia Center; Assistant Professor, Tufts University School of Medicine
Department(s): Medicine, CardioVascular Center, Cardiology
Appt. Phone: 617-636-5902
Fax #: 617-636-9115

Electrophysiology, arrhythmias

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Maureen Abbott, MSN, BSN

Maureen Abbott, MSN, BSN

Title(s): Nurse Practitioner
Department(s): Cardiovascular Center, Electrophysiology
Appt. Phone: 617-636-2273 (CARD)
Fax #:

Cardiology, Primary Care

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Michael J. Mazzini, MD

Michael J. Mazzini, MD

Title(s): Cardiologist; Assistant Professor of Medicine, TUSM
Department(s): CardioVascular Center
Appt. Phone: 617-636-5902
Fax #: 617-636-9115

Cardiac Electrophysiology

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Munther K. Homoud, MD

Munther K. Homoud, MD

Accepting New Patients

Title(s): Co-Director, New England Cardiac Arrhythmia Center; Assistant Professor, Tufts University School of Medicine
Department(s): Medicine, CardioVascular Center, Cardiology
Appt. Phone: 617-636-5902
Fax #: 617-636-9115

Cardiac arrhythmias, pacemakers, implantable cardioverter defibrillation, surgery for arrhythmias

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Sushil Singh, MD

Sushil Singh, MD

Accepting New Patients

Title(s): Cardiologist; Assistant Professor, Tufts University School of Medicine
Department(s): Medicine, CardioVascular Center, Cardiology
Appt. Phone: 617-636-5902
Fax #: 617-636-9115

Electrophysiology, arrhythmias

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Research + Clinical Trials


Junctional AV Ablation in CRT-D Patients with Atrial Fibrillation

The primary aim of the study is to determine if patients with permanent AF who meet conventional criteria for CRT and undergo AVJ ablation have reduced ventricular remodeling (i.e. echocardardiographic improvement of LV end systolic volume), a potent marker of subsequent clinical deterioration, compared to patients who do not undergo AVJ ablation. This study is designed to test feasibility of enrollment and short-term improvement in surrogate endpoints, with anticipation of a full-scale large randomized clinical trial using hard outcome events if this phase is promising. 
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AtriClip® Left Atrial Appendage Exclusion Concomitant to Structural Heart Procedures (ATLAS)

Sometimes, following open heart surgery, patients can develop irregular heart rhythms like atrial fibrillation. Atrial Fibrillation can occur in 30-50% of patients following open heart surgery. This is called, postoperative atrial fibrillation (POAF). POAF and related stroke/TIAs impact dying, and quality of life (QoL) for patients undergoing structural heart disease procedures. Usually these heart rhythms straighten out within your hospital stay but are typically treated with some drugs to decrease the ability of you blood to clot. Some people that have a high risk of bleeding cannot take blood thinners. This study is collecting information on the treatment of those subjects that develop POAF. This research study is also comparing how LAA closure impacts the physical health and quality of life (QoL) versus not having it closed in a special group of people, The left atrial appendage (LAA) is a small sac located on the upper chamber of your heart. This sac is thought to be the site where blood clots form and is believed to be associated with a significant risk of stroke/TIA in patients with specific risk factors like age, hypertension, atrial fibrillation, and diabetes. 
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