Search Results
Results 251 - 300 of 1158
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Im So-Hyang - - 2008
PURPOSE: To evaluate the feasibility, safety, and effectiveness of prophylactically placed noninvasive transcutaneous temporary pacemakers (NTP) to prevent angioplasty-induced bradycardia and hypotension during carotid angioplasty and stenting (CAS). METHODS: The preventive use of NTPs was evaluated in 31 CAS procedures performed at 3 institutions in 30 patients considered to be ...
Jafary Fahim H - - 2008
Pacemaker-mediated tachycardia (PMT) is an arrhythmia seen in patients implanted with dual-chamber pacemakers. It occurs when ventricular contraction is followed by retrograde conduction to the atrium, which is sensed by the pacemaker, leading to ventricular triggering. A vicious re-entry cycle is set up, leading to incessant tachycardia unless appropriately terminated. ...
Kim Daniel - - 2008
The dynamic T(1)-weighted signal in first-pass myocardial perfusion MRI can vary as a function of k-space trajectory. The purpose of this study, therefore, was to compare the relative T(1)-weighted signal produced by the linear, centric, and reverse centric k-space trajectories at 3T. The centric k-space trajectory yielded higher arterial input ...
Requejo Philip Santos - - 2008
BACKGROUND/OBJECTIVE: The high demand on the upper limbs during manual wheelchair (WC) use contributes to a high prevalence of shoulder pathology in people with spinal cord injury (SCI). Lever-activated (LEVER) WCs have been presented as a less demanding alternative mode of manual WC propulsion. The objective of this study was ...
Häussler Achim A Division of Pediatric Cardiovascular Surgery, University and Children Hospital Zürich, Steinwiesstrasse 75, CH-8032 Zurich, - - 2008
Ebstein's anomaly is a congenital defect primarily due to a failed-development of the tricuspid valve. The defect affects significantly surrounding structures (conducting tissue, right atrium and ventricle), which often need concomitant correction. We have extended our techniques for the repair of conventional atrio-ventricular valve insufficiency to this specific pathology. The ...
Bandorski D - - 2008
BACKGROUND AND STUDY AIMS: The diagnostic benefit of capsule endoscopy in suspected small-bowel disease is high and seems to be superior to that with conventional methods and scintigraphy. Because of the limited clinical experience in patients with cardiac pacemakers and other implanted electrical devices, it is recommended that capsule endoscopy ...
Streit Sven - - 2007
Alcohol ablation (AA) of the septum has been introduced as new therapy in hypertrophic cardiomyopathy (HCM). It was feared that iatrogenic myocardial infarction due to AA may induce re-entry tachyarrhythmias and increase sudden cardiac death. Twenty-four patients (mean age 52 years) underwent successful AA. Clinical follow-up (FU) ranged from 0.3 ...
Sun Qi - - 2008
Ventricular Safety Standby (VSS) was designed to prevent the potentially serious consequences of crosstalk in many dual-chamber pulse generators. In this report, we describe a patient in whom the VSS was activated in a special way. When the VSS presents during bipolar sensing configuration, the clinician should notice the proper ...
Gan H W - - 2007
A 29-year-old woman with frequent syncope attacks was referred for electrophysiological study and consideration for radio-frequency ablation of her ventricular arrhythmias. Her ECG showed features of right ventricular outflow tract premature contraction. Differential diagnoses for the causes of syncope in this patient include: right ventricular outflow tract tachycardia, arrythmogenic right ...
Bhatti Sabha - - 2007
Persistent left superior vena cava (PLSVC) is a very rare and yet the most commonly described thoracic venous anomaly in medical literature. It has a 10-fold higher incidence with congenital heart disease. PLSVC often becomes apparent when an unknown PLSVC is incidentally discovered during central venous line placement, intracardiac electrode/pacemaker ...
Foo Hong - - 2009
A patient developed a fungal pacemaker infection with Scedosporium apiospermum following a series of pacemaker manipulations. Despite percutaneous removal of the pacemaker system and subsequent operative extraction of the atrial thrombus, his course was complicated by persistent sepsis, pulmonary septic emboli and bilateral frontal lobe infarction, following which treatment was ...
Kim Wondae - - 2007
C. Gabbard and C. Helbig (2004) found, when examining seated participants' limb selection for reaching and grasping in hemispace, that right-handers preferred to switch to the nondominant left arm for objects located approximately 20 degrees horizontally from body midline (90 degrees) in left hemispace. In the present study, the authors ...
Chun Yun Shin - - 2008
BACKGROUND: In liver transplantation, a minimum graft to patient body weight (BW) ratio is required for graft survival; in liver resection, total liver volume (TLV) calculated from body surface area (BSA) is used to determine the future liver remnant (FLR) volume needed for safe hepatic resection. These two methods of ...
Kiss István Z - - 2008
We investigate the emergence of synchronization in two groups of oscillators; one group acts as a synchronization source, and the other as the target. Based on phase model simulations, we construct a synchrony index (SI): a combination of intra- and intergroup synchronies. The SI characterizes the extent of induced synchrony ...
Messroghli Daniel R - - 2007
PURPOSE: To optimize and validate a fully-integrated version of modified Look-Locker inversion-recovery (MOLLI) for clinical single-breathhold cardiac T1 mapping. MATERIALS AND METHODS: A MOLLI variant allowing direct access to all pulse sequence parameters was implemented on a 1.5T MR system. Varying four critical sequence parameters, MOLLI was performed in eight ...
Ying Zhi-Qiang - - 2008
Isolated noncompaction of the ventricular myocardium is an unclassified cardiomyopathy and is thought to be due to arrest of myocardial morphogenesis. Fetal arrhythmias may occur in approximately half of the patients and account for the death in this disorder. We describe a patient with isolated noncompaction of the right ventricular ...
Foo Thomas K F - - 2007
PURPOSE: To develop a method for fat suppression in myocardial delayed enhancement (MDE) studies that achieves effective signal intensity reduction in fat but does not perturb myocardial signal suppression. MATERIALS AND METHODS: A new approach to fat suppression that uses a spectrally-selective inversion-recovery (SPEC-IR) tip-up radio frequency (RF) pulse following ...
Rembowski Casaccia Giovana - - 2007
OBJECTIVES: To evaluate in vitro the surface of elastomeric chains of different manufacturers to verify the presence of pathogenic microorganisms at the moment of unpacking and analyze a possible inhibitory effect of the elastomeric chain when exposed to microorganisms of the oral cavity, for example, Streptococcus mutans, Lactobacillus casei, and ...
Bosa-Ojeda F - - 2007
Cardiac resynchronization improves survival and functional class of patients with advanced chronic heart failure. Placement of a stimulation electrode in the coronary sinus via the left subclavian vein is not always possible and other alternatives are required, above all when it concerns upgrading a previous device. This paper presents the ...
Khadjooi K - - 2007
Left ventricular (LV) lead displacement is an early complication of biventricular pacemakers and leads to loss of capture, diaphragmatic pacing, and symptomatic deterioration, requiring a revision procedure. We report a case of late LV lead displacement following a coughing fit and treatment with a lead with a new principle of ...
Mortensen Kai - - 2008
We report a female patient with a ventricular lead perforation late after implantation. The lead perforated heart and lung parenchyma and caused hemothorax but no cardiac effusion or tamponade. No definitive evidence for lead perforation was found by standard diagnostic assessment. Definitive diagnosis was established by cath-lab fluoroscopy. The surgical ...
Erdogan Okan - - 2007
The present case report describes a patient who underwent successful dual-chamber pacemaker implantation with active ventricular lead fixation at a high septal region in the right ventricular outflow tract. Unexpectedly, stimulation at a high output in the right ventricular outflow tract caused an unusual extracardiac stimulation, specifically, intercostal muscle twitching.
Yang Min - - 2007
The objective of this study was to measure the backscatter coefficient of formalin-fixed myocardial tissue as a function of angle of insonification relative to the myocardial fiber direction. Backscatter measurements were performed on eight cylindrical formalin-fixed lamb myocardial specimens and compensated for attenuation and diffraction effects to determine the backscatter ...
Yücel-Ero─člu Emel - - 2007
OBJECTIVE: This study aimed to evaluate the relationship between head posture and craniofacial morphology in nonsyndromic cleft lip and palate children with oronasal fistula. PATIENTS: A total of 31 cleft lip and palate patients with a mean skeletal age of 7.59 (+/-2.11) years were involved. Fifteen had complete unilateral cleft ...
Reising Scott - - 2007
Lead wire malposition is thought to be a rare complication of both permanent and temporary pacemaker implantation. The actual incidence and prevalence are unknown because of lack of reporting, which complicates consistency in treatment. Potential safeguards to prevent complications as a result of lead malposition are readily available, effective, and ...
Coley Brian - - 2008
A new method of evaluation for functional assessment of the shoulder during daily activity is presented. An ambulatory system using inertial sensors attached on the humerus was used to differentiate a dominant from a non-dominant shoulder. The method was tested on 31 healthy volunteers with no shoulder pathology while carrying ...
Cao Michael - - 2007
INTRODUCTION: A Taser weapon is designed to incapacitate violent individuals by causing temporary neuromuscular paralysis due to current application. We report the first case of a Taser application in a person with a dual-chamber pacemaker demonstrating evidence of Taser-induced myocardial capture. METHODS AND RESULTS: Device interrogation was performed in a ...
Lausberg Hedda - - 2007
Recent neuropsychological, psycholinguistic, and evolutionary theories on language and gesture associate communicative gesture production exclusively with left hemisphere language production. An argument for this approach is the finding that right-handers with left hemisphere language dominance prefer the right hand for communicative gestures. However, several studies have reported distinct patterns of ...
Rafique A M - - 2007
Echocardiographic guided pacemaker optimization leads to significant improvement in cardiac function among nonresponders to cardiac resynchronization treatment (CRT). Simpler, noninvasive determination of cardiac function during biventricular pacemaker programming may simplify this procedure. In this report we describe a 73 year old male patient who presented with recent onset NYHA class ...
You Chi-Fang - - 2007
Recognition of cardiac syncope masquerading as epilepsy may be difficult in the Emergency Department. We report a middle-aged man with recent onset convulsions who posed a diagnostic puzzle before it was found that he had paroxysmal ventricular standstill with complete atrioventricular block: he made a complete recovery after temporary pacemaker ...
Rozner Marc A - - 2007
PURPOSE OF REVIEW: Worldwide, nearly 3 million patients have cardiac pacemakers and more than 300,000 have implantable cardioverter-defibrillators. Many factors cause confusion regarding perioperative care of these patients, since conventional wisdom, case reports, textbooks, and literature reviews have either not kept pace with technologic developments or contain incorrect statements. Additionally, ...
Seko Yoshinori - - 2007
Patients with neonatal lupus erythematosus (NLE) often have congenital heart block with or without heart failure and are born to mothers who have anti-SS-A and/or anti-SS-B antibodies. NLE has been considered to result from the placental transmission of maternal autoantibodies into the fetal circulation causing myocardial damage. We report a ...
Cingoz Faruk - - 2007
PURPOSE: The purpose of this article is to show how custom "Y"-lead adapters and standard dual-chamber pacemakers can be used to produce pacing paradigms that will lead to stable experimental models of heart failure and atrial fibrillation. DESCRIPTION: With two custom lead adapters we used both ports of two dual-chamber ...
Baraldi-Artoni S M - - 2007
The research aimed to study the morphologic variation of the testis, seeking to promote the selection and genetic control of those that present appreciable spermatic production throughout the year. Testis morphology of the Rynchotus rufescens partridge was investigated, analyzing the testis weight, the seminiferous tubules diameter, the thickness of the ...
Nägele H - - 2007
Stored electrograms or marker channels are available in most of modern cardiac pacemaker models. We sought to analyse these information to uncover terminal events of pacemaker patients dying suddenly. Method and results We made post-mortem pacemaker (PM) interrogations in 19 patients dying suddenly out of hospital between the years 1997 ...
Miyamoto Hiroshi - - 2007
During juvenile development, the cardiac pacemaker of the isopod crustacean Ligia exotica is transferred from the myocardium to the cardiac ganglion of the neurogenic heart. In adult, light stimulus decreases the beat frequency of the heart. To elucidate developmental changes in the photosensitivity of the juvenile Ligia heart, we examined ...
Cantini Federico - - 2007
Congestive heart failure is a severe chronic disease often associated with disorders that alter the mechanisms of excitation-contraction coupling that may result in an asynchronous left ventricular motion which may further impair the ability of the failing heart to eject blood. In recent years a therapeutic approach to resynchronize the ...
Zartner P A - - 2007
A 4-year-old girl with post-surgical complete atrioventricular block received an epicardial dual chamber pacemaker system. During further growth intermittent exit block occurred, first misinterpreted as neurological seizures. The epicardial lead was replaced using a transvenous approach, and a pacemaker with an integrated home monitoring facility was implanted. After her discharge, ...
Nagasaki Toshiki - - 2007
OBJECTIVE: Subclinical hypothyroidism affects 5-15% of the general population, and is associated with increased morbidity from cardiovascular disease. We recently reported a significant increase in brachial-ankle pulse wave velocity (baPWV), a parameter of arterial stiffening and an independent predictor for the presence of cardiovascular disease, in subclinical hypothyroidism. The current ...
Massin Martial M - - 2007
OBJECTIVE: To assess the epidemiology of cardiac syncope in children and evaluate the guidelines on its management. MATERIAL AND METHODS: We analyzed the etiology to syncope and diagnostic workup in consecutive pediatric patients presenting with syncope in our emergency departments or cardiac outpatient clinics between 1997 and 2005, and who ...
Santamarina C - - 2007
Traceability during slaughter was studied in 1,581 pigs identified by different devices. Treatments were visual ear tags (n = 1,300), electronic ear tags of different technologies (half-duplex, n = 636; full-duplex, n = 632), and intraperitoneally injected transponders of different technologies (half-duplex 32 mm, n = 645; full-duplex 34 mm, ...
Bucchi Annalisa - - 2007
The 'funny' current, first described in cardiac pacemaker cells almost 30 years ago, is a key player in the generation of pacemaker activity and the autonomic modulation of heart rate. Because of these specific functions, a search for molecules able to interfere selectively with the 'funny' current was undertaken soon ...
Harrigan Richard A - - 2007
Emergency Department placement of a temporary transvenous cardiac pacemaker offers potential life-saving benefits, as the device can definitively control heart rate, ensure effective myocardial contractility, and provide adequate cardiac output in select circumstances. The procedure begins with establishment of central venous access, usually by a right internal jugular or left ...
Hirschl David A - - 2007
BACKGROUND: Pacemakers and implantable cardiac defibrillators (ICDs) are widely used for the management of cardiac arrhythmias and congestive heart failure (CHF). Acute implantation complication rates range from 3% to 7%. The aim of this study is to describe the incidence of lead perforation on computed tomography (CT), and correlate these ...
Gott Vincent L - - 2007
Complete heart block developed in more than 10% of C. Walton Lillehei's early patients undergoing closure of ventricular septal defects, and hospital mortality was 100% in this group of patients. This problem of early fatality from heart block was completely eliminated with the use of a myocardial electrode in combination ...
Roy Vincent - - 2007
With the commercial availability of well-defined ruthenium metathesis catalysts which combine high stability and broad functional group compatibility, olefin metathesis is now routinely integrated in various syntheses. We will report here the overwhelming power and scope of cross-metathesis in the area of new acyclic nucleoside phosphonates. Scope and limitations of ...
Lugo-Adams Félix - - 2007
Malpositioning of a permanent pacemaker lead in the left ventricle is rare. Usually, a paced right bundle branch pattern is the initial finding that fosters other confirmatory studies such as chest films and transthoracic echocardiogram. We describe the unusual case of an asymptomatic 83-year-old male patient who was incidentally found ...
Schumann Jörg - - 2007
The case of an 80-year-old woman who underwent permanent VDD-pacemaker implantation for recurrent syncope in the presence of second-degree type 2 AV-block is reported. During follow-up, low atrial sensing with AV-synchrony of only 58-73% was noted. Four years after the pacemaker implantation, the patient was hospitalized for non-cardiac reasons and ...
Solc David - - 2007
The phylogeny of the heart and its conducting system is surveyed in the present study, as well as its parallels with ontogeny. A concise review of its evolution in the main taxonomic groups is presented. The aim is to inform physicians on evolutionary connections to the physiology of the human ...
Baker Daniel G - - 2006
PURPOSE: To examine the upper body strength, speed, power, and strength-endurance of rugby-league players of different ranks. These data could provide information pertinent to the importance of these factors for different grades of rugby league and for positional groups in those different grades. METHODS: Sixty rugby-league players, 20 participants each ...
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