Commonly Searched EP Topics
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EP Lab Digest - Permanent Pacemaker
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Permanent pacemakers are small, battery-operated devices that help the heart beat in a regular rhythm. Some pacemakers are permanent (internal), and some are temporary (external). Feel free to browse through EP Lab Digest's collection of articles on this topic.
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Anatomically Correct Permanent Pacemaker Casing
Anatomically Correct Permanent Pacemaker Casing Features: Anatomically Correct Permanent Pacemaker Casing - Sergio Sanchez-Zambrano, MD Cleburne, Texas The electronics of current implantable devices are outstanding and truly life-saving devices. As a result, I have designed and patented an anatomically correct permanent pacemaker casing based on the measurements of the curvature of the rib cage using CAT scan films. There are three relevant factors to keep in mind: 1) Anatomically-designed ...
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Use of a Permanent Pacemaker Left Ventricle Lead Implant
A permanent pacemaker ventricular lead positioned in the left ventricle (LV), ?although its actual incidence is probably unknown,?1 is ?a rare and often undiagnosed complication of pacemaker implantation.?2 The abnormal position is initially suspected when a 12-lead EKG displays a right bundle branch block (RBBB) while pacing the ventricle. Confirmation of the ventricular lead position is usually documented by a routine PA and lateral chest x-ray. An echocardiogram, and possibly a trans-esophageal echo (TEE), can also be helpful.
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Advances in Pacemaker Electrogram Recording and Storage of Arrhythmias: The Silent Witness for Clinicians
A recent report has described the use of electrograms (ECGs) stored in a pacemaker to help determine the probable cause of death.1 The physician performing diagnostic and interventional catheterization procedures can utilize improvements in detection and storage of arrhythmias in permanent pacemakers to diagnose conditions such as unrecognized paroxysmal atrial fibrillation and ventricular tachycardia that may affect patient outcomes. This report provides two examples of the types of pacemaker electrograms encountered in clinical practice. The literature suggests that direct analysis of stored electrograms may be needed for diagnosis in some patients.
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EP 101: Bradyarrhythmias
In this next installment of EP Lab Digest?s EP 101 section, the authors discuss bradyarrhythmias.
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Tricks of the Trade with Difficult Pacemaker Access
Tricks of the Trade with Difficult Pacemaker Access Features: Tricks of the Trade with Difficult Pacemaker Access - Todd J. Cohen, MD and Jose M. Poulose, MD Occasionally, access may be difficult during a permanent pacemaker implant. The patient underwent attempted implantation of a permanent pacemaker elsewhere which was unsuccessful due to percutaneous access. This demonstrated a very tortuous subclavian vessel, which may be seen in Figure 1. Subsequently, we were able to access the ...
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The EnRhythm MRI Trial: Evaluating the Use of Pacemakers in MRI
Presently, 60 million magnetic resonance imaging (MRI) scans are performed annually worldwide. Unfortunately, up to 75% of pacemaker patients will also need an MRI at some point in their lifetime.1,2 However, MRI examinations are contraindicated in most medical centers for patients with a permanent pacemaker. Thus, MRI-pacemaker safety has great clinical importance.
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Incidence and Prognosis of Pacemaker Lead-Associated Masses: A Study of 1,569 Transesophageal Echocardiograms
ABSTRACT: Endovascular lead infection is an uncommon but serious problem. Transesophageal echocardiography (TEE) is a useful tool for identification of pacemaker lead vegetations. Additionally, incidental echogenic masses are occasionally identified by TEE. The prognosis and optimal treatment of either suspected lead infection or an incidental mass is poorly understood. Objective. The purpose of this study was to examine the incidence and clinical course of pacemaker lead masses. Methods. A total of 1,569 sequential TEE examinations performed from January 2002 to January 2005 were reviewed. Retrospective chart analysis of patients with a pacing lead-associated mass was performed to review the indication for TEE as well as clinical management. Telephone follow up was also performed. Results. During 125 TEE examinations, pacemaker leads were visualized in the right-sided chambers. Fifteen studies demonstrated an echogenic mass associated with the lead. In 9 of these studies, endocarditis was suspected, and the mass was felt to be a vegetation: 6 were treated with antibiotics alone, with 1 death attributed to a complication of endocarditis (autopsy proven massive pulmonary embolus); 3 patients were treated with lead extraction, both were alive at follow up; 1 patient was lost to follow up after the TEE. Six patients (5%) were found incidentally to have a mass on the pacing lead during TEE: 3 were treated with warfarin; 2 received no specific therapy; and 1 underwent surgical debridement of the lead during valve surgery. All of the patients in this group were alive at follow up, and no significant clinical events attributable to the lead-associated mass were observed. Conclusions. TEE identified an echogenic mass on 12% of the leads imaged, with 60% having suspected endocarditis. The mortality rate of lead vegetation was 11%. An incidental mass was noted on 5% of the leads, with no significant associated morbidity or mortality observed.
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A Review of Cardiac Resynchronization Therapy in Systolic Heart Failure Patients in Sinus Rhythm and Atrial Fibrillation
Disclosure: Dr. Machado serves on the scientific advisory board for Guidant Corporation, and is a consultant for Medtronic, Guidant and Biotronik.
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A Unique Pacemaker Complication of Thrombus Formation in the Right Internal Jugular Vein Due to Unusual Migration of an Atrial Pacemaker Electrode
A Unique Pacemaker Complication of Thrombus Formation in the Right Internal Jugular Vein Due to Unusual Migration of an Atrial Pacemaker Electrode Case Reports: A Unique Pacemaker Complication of Thrombus Formation in the Right Internal Jugular Vein Due to Unusual Migration of an Atrial Pacemaker Electrode - Thomas S. Faber, MD, Andreas Grom, MD, Manfred Zehender, MD Common complications of permanent endocardial pacing systems include infection of the generator pocket, the wire track, ...
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Southern California Hospital Adds Laser Lead Extraction to Their ?State of the Art? Electrophysiology Program
Pacemaker and implantable cardioverter defibrillator (ICD) device implantation can be a life-saving procedure for many patients. Approximately two million people worldwide have pacemakers, and about 500,000 ICDs are implanted annually. As the popularity and clinical use of these devices continues to grow, so does the incidence of complication, including malfunction, infection and subclavian vein (SVC) occlusion. Pacemaker pocket and infective endocarditis (IE) are a rare but potentially lethal complication of these procedures. The incidence of infective endocarditis within this patient population ranges from 1?7%. Cardiac device (CD) patients with IE have a mortality rate as high as 35%.
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