Search Results
Results 451 - 500 of 1162
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Delacey William W - - 2003
With the development of cardiac resynchronization for patients with symptomatic heart failure and electrical dyssynchrony, there are patients with chronic pacemakers that meet the indications for biventricular pacing. Typically, this involves placement of the left ventricular lead with generator change to a dual chamber biventricular pacemaker, maintaining use of the ...
Plummer C J - - 2003
Pacemaker telemetry is increasingly being used to infer the presence or absence of arrhythmias in clinical practice. To evaluate the reliability of these data in patients with sick-sinus syndrome, a sub-study of eighteen consecutive patients in the Systematic Trial of Pacing to prevent Atrial Fibrillation (STOP AF) implanted with dual-chamber ...
Backs Richard W - - 2003
Cardiac (heart rate, pre-ejection period, and respiratory sinus arrhythmia), performance, and visual demand measures of driver workload were obtained from 15 male university students who drove a simulated course multiple times at a fixed speed of 72.4 km/h. The course contained curves of 3 different radii (582, 291, and 194 ...
Radegran Kjell - - 2003
Cardiac surgery in Stockholm grew on a sound foundation of well-developed general thoracic surgery. The portal figure is Clarence Crafoord (1899-1983) who already in 1927 had succeeded with the Trendelenburg pulmonary embolectomy operation. He went on to develop lung surgery in general. With foresight he stimulated the chemists of Karolinska ...
Barber B J - - 2004
We describe a 5-year-old boy with Fontan physiology and a ventricular pacemaker who developed severe plastic bronchitis. Evaluation by cardiac catheterization revealed profoundly altered hemodynamics, which improved with atrial pacing. Following implantation of an atrial pacemaker, which restored atrioventricular (A-V) synchrony, the patient's hemodynamics greatly improved and his plastic bronchitis ...
Kistler Peter M - - 2003
Pacemaker ventricular block is a rare and poorly recognized electrocardiographic abnormality usually identified in terminally ill pacemaker patients. Because the patient is frequently moribund and the phenomenon transient, it is probably overlooked and not well documented. It is characterized by an altered temporal relationship between the pacemaker stimulus artifact and ...
Moorman Antoon F M - - 2003
Concepts of cardiac development have greatly influenced the description of the formation of the four-chambered vertebrate heart. Traditionally, the embryonic tubular heart is considered to be a composite of serially arranged segments representing adult cardiac compartments. Conversion of such a serial arrangement into the parallel arrangement of the mammalian heart ...
Wiegand Uwe K H - - 2003
A higher incidence of pacemaker related complications has been reported in DDD systems as compared to VVI devices. The implantation of single lead VDD pacemakers might reduce the complication rate of physiological pacing in patients with AV block. In a retrospective study, the data records of 1,214 consecutive patients with ...
Kobayashi Masayuki - - 2003
A 10-year old male mongrel dog was presented to the University Veterinary Teaching Hospital with a two-month history of episodic syncope. Twenty-four hr Holter electrocardiographic (ECG) recording revealed frequent episodes of advanced atrioventriculer block with long periods of ventricular asystole. The cause of syncope was determined to be Adams-Stokes syndrome ...
Nothroff Joerg - - 2003
The benefit of a dual chamber pacemaker and the atrial and ventricular synchronization in patients with two ventricles is widely accepted. The purpose of this study was to choose the optimal AV interval in patients with congenital heart disease after definitive palliation of univentricular hearts. Therefore, different AV intervals were ...
Wilder-Smith E - - 2003
The clinical spectrum of spinocerebellar ataxia 3 (SCA 3) disease is wide and varied. We describe a Chinese patient with a mutation at the SCA 3 locus with clinical features of levodopa-responsive dystonia. The family history was suggestive of being autosomally dominant. Levodopa responsiveness though rare has been described in ...
Li Guanglin - - 2003
A recently developed heart-model-based localization approach is experimentally evaluated in noninvasively localizing the site of origin of cardiac activation in a patient with a pacemaker. The heart-torso model of the patient was constructed from the contrast ultrafast computed tomography images. The site of initial paced activation in the patient was ...
Doi Mitsuru - - 2003
We reported a sixty-year-old man who developed acquired stuttering after a brainstem infarction. Infarctions were detected in the midbrain and upper pons. Neurogenic stuttering of this patients indicated that the midbrain and upper pons could be lesion sites responsible for acquired stuttering. We speculated that the reticular network extending from ...
Moukarbel George V - - 2003
Pacemaker related endocarditis is a rare potentially fatal condition, most commonly acquired during manipulation of the pacemaker system. Most patients have involvement of the right heart. Only rarely has involvement of the left-heart been documented. In the absence of controlled studies regarding management of such cases, many recommend complete removal ...
Griesbach Lothar - - 2003
Inos pacemakers use contraction dynamics to regulate the pacing rate according to the Closed-Loop Stimulation (CLS) principle. The physician can program only the lower and upper rate limits, while the internal rate responsive parameters are continually adjusted to changing patient conditions. Seventy-two patients with sinus node disease were enrolled in ...
Ishikawa Toshiyuki - - 2003
In patients with implanted DDD pacemaker, cardiac output is maximal when atrioventricular (AV) delay is set to give the maximum QT interval (QTI). QTI is used as a sensor of a rate-responsive pacemaker and the evoked QTI (eQTI) is measured as the time duration from the ventricular pace-pulse and the ...
Jeffery Charlotte H - - 2003
Taxonomic revision and cladistic analysis of a morphological dataset for Australian Tertiary temnopleurids resolve the phylogeny of the group and allow the testing of a series of hypotheses about the evolution of larval development and consequences of changes in development. Australian Tertiary temnopleurids encompass all three major developmental types found ...
Jiménez Gloria P - - 2003
BACKGROUND: The treatment of striae distensae has recently been reported with various lasers such as the 585-nm pulsed dye laser. At lower fluences (2.0 to 4.0 J/cm2), this laser has been purported to increase the amount of collagen in the extracellular matrix. OBJECTIVE: To determine whether the 585-nm pulsed dye ...
Hwang Tae-Sun - - 2003
To investigate morphological characteristics of Korean noses, nasal bases and nostrils were measured and classified in Korean adults. The height and the width of the nasal base, the height and the width of the columella, the length of the long and short nostril axes, and nasal alar angle were measured. ...
Oza Parind M - - 2003
This report describes the case of a 73-year-old man who was referred for consultation for increasing abdominal free air 1 week after he underwent surgery for aortic valve replacement and coronary artery bypass grafting with intraoperative pacemaker implantation. Laparoscopic exploration revealed that the pacemaker wires had passed through the left ...
Sarac-Hadzihalilović Aida - - 2003
Lobus limbicus is anatomical basis for explaining the temporal epilepsy because it not only includes the focus of infection of temporal lobe but also the frontal lobe, and with it we can explain many of the phenomenon's of the epilepsy (hallucinations, the change of the effects, and so on.). The ...
Zhong He - - 2003
Caged fiddler crabs, Uca pugilator, were exposed to field ULV applications to measure the impact of fenthion. Two nozzle systems, conventional flat-fan nozzles (Tee Jet 8002SS) and high-pressure hydraulic nozzles (1/8 MIS), were compared using single spray swaths. Fenthion residues were detected throughout the 4.83-km test zone for both systems. ...
Pamuk Omer Nuri - - 2003
A 35-year-old male diagnosed with Wegener's granulomatosis (WG) in 1989 recently came to our hospital with the complaint of left lumbar pain. He was found to have left nephrolithiasis and left diaphragmatic elevation. Fluoroscopic study and electromyographic examination revealed findings compatible with unilateral phrenic paralysis. We could not detect any ...
Derrick J L - - 2003
Prompted by an actual case of potentially life-threatening infusion pump malfunction, we investigated the effects of wire breakage(s) within the syringe size sensor circuit in a Graseby 3400 infusion pump. The circuit wires within the sensor were systematically broken. The syringe sizes recognised by the sabotaged circuit and the actual ...
Valettas Nicholas - - 2003
Alcohol septal ablation is a novel catheter-based technique for the treatment of obstructive hypertrophic cardiomyopathy. Complete heart block complicates the procedure in 7%-30% of cases and necessitates the prophylactic insertion of a temporary pacing wire in all patients who do not have a permanent pacemaker. We describe a case of ...
Yang Yunsik - - 2003
OBJECTIVE: To evaluate the ability of a retina specialist's grading of 30 degrees color stereoscopic fundus photographs to identify areas of significant retinal thickening as assessed by the Retinal Thickness Analyzer (RTA) and to determine whether this ability was affected by the presence of retinal pathology. MATERIALS AND METHODS: Thirty-two ...
Gumerman George J - - 2003
Long House Valley, located in the Black Mesa area of northeastern Arizona (USA), was inhabited by the Kayenta Anasazi from circa 1800 B.C. to circa A.D. 1300. These people were prehistoric precursors of the modern Pueblo cultures of the Colorado Plateau. A rich paleoenvironmental record, based on alluvial geomorphology, palynology, ...
Pokrovskii Vladimir M VM Kuban State Medical Academy, Department of Normal Physiology, Krasnodar, - - 2003
This article advances an hypothesis that there is duplication of the heart rhythmogenesis system. The following article reviews available data and advances an hypothesis to suggest new ideas about the mechanisms of cardiac rhythm generation. The hypothesis is that along with the existence of an intracardiac pacemaker, the generator of ...
Scholz Nathaniel L - - 2002
The cardiac ganglion is a simple central pattern-generating network that controls the rhythmic contractions of the crustacean heart. Enzyme assays and Western blots show that whole heart homogenates from the crab Cancer productus contain high levels of nitric oxide synthase (NOS), an enzyme that catalyzes the conversion of arginine to ...
Wiegand Uwe K H - - 2002
The impact of continuous telemetry of atrial electrogram and marker annotations on Holter ECG interpretation was assessed in 98 patients with bipolar dual chamber pacemakers (VDD pacemakers n = 29, DDD(R) systems n = 69). Atrial electrogram and marker annotations were continuously sampled by a telemetry coil that was externally ...
Liang Hsin-Yueh - - 2002
Interference between myopotentials and pacemakers is well recognized, especially in a unipolar pacing system. This case report describes myopotential interference with an atrial synchronous ventricular inhibited (VDD) unipolar pacemaker in a 54-year-old woman. The interference caused both repetitive ventricular upper rate pacing and sometimes ventricular channel inhibition, resulting in palpitation ...
Bourke Michael E - - 2002
PURPOSE OF REVIEW: Pacemaker and implantable cardiovertor defibrillator utilization is evolving rapidly. Expanding indications are reviewed. RECENT FINDINGS: Current pacemakers are smaller, more dependable, longer lasting and have rate-adaptive features. Implantable cardiovertor defibrillators use transvenous leads and have advanced pacing abilities. Primary pacing indications remain sinus node dysfunction or atrioventricular ...
Sweeney Michael O - - 2002
The aim of this study was to describe the indications for upgrade of pacemakers (PMs) or single chamber (VVIR) ICDs to dual chamber (DDDR) ICDs, surgical approach, hardware hybridization, and clinical outcome. Patients with preexisting PMs or VVIR ICDs may develop indications for ICD therapy or dual chamber pacing, respectively, ...
Opherk Christian - - 2002
PURPOSE: Sudden unexpected death in epilepsy (SUDEP) is a major cause of mortality in patients with epilepsy. Since cardiac arrhythmia may be a responsible factor, we sought to determine the prevalence of significant EKG abnormalities during and immediately after epileptic seizures, and to identify risk factors for these changes. METHODS: ...
Maisel William H - - 2002
Pacemaker and implantable cardioverter defibrillator (ICD) generator recalls and safety alerts (advisories) occur frequently, affect many patients, and are increasing in number and rate. It is unknown if advances in device technology have been accompanied by changing patterns of device advisory type. Weekly FDA Enforcement Reports from January 1991 to ...
Trouillier H H Orthopaedic University Hospital Centre of Grosshadern, Munich, Germany. - - 2002
In a retrospective study the results of operatively treated ankle joints were critically discussed. In a period from January 1, 1977 to December 31, 1994, a total of 35 arthrodeses were carried out. Seventeen patients were followed up clinically, radiologically and with a gait analysis. Not only the radiological surgical ...
Chan Albert W - - 2002
Superior vena cava (SVC) obstruction is an uncommon but serious complication associated with permanent pacemaker implantation. The mechanical stress associated with pacemaker wires may lead to vessel wall inflammation, fibrosis, and thrombus formation, and ultimately to venous stenosis and occlusion. The surgical treatment of pacemaker related SVC syndrome requires thoracotomy ...
Harton Francois M - - 2002
A study on the effect of sectioning the plantar fascia on the range of motion at the first metatarsophalangeal joint is presented. Dorsiflexion and plantarflexion range-of-motion data from 18 patients who had no first metatarsophalangeal joint pathology and had undergone an in-step plantar fasciotomy for recalcitrant plantar fasciitis were analyzed. ...
Kim Hee-Yeol - - 2002
Pacemaker lead infection is a rare but a dangerous complication. Diagnosis can usually be established by the clinical picture and blood cultures. Transesophageal two dimensional echocardiography might be crucial in the diagnosis by visualizing pacing lead vegetations. Medical treatment alone is rarely successful, and several studies have suggested the infected ...
Barold S Serge - - 2002
This report describes the response of a Vitatron Diamond II DDDR pacemaker to atrial flutter in a patient who developed alternating duration of the ventricular paced cycles during automatic mode switching to the DDIR mode. This device activates mode switching on a beat-to-beat basis and exhibits "ventricular hysteresis" in the ...
Aksoy M - - 2002
Oestrus and calving records of Anatolian buffaloes were analyzed to investigate influence of climatic conditions on oestrus occurrence and postpartum period. Oestrus records showed a seasonal pattern concentrated between July and September which is the warmest period of the year. Likewise, more than half (52.7%) of the total calvings occurred ...
Montesani Chiara - - 2002
BACKGROUND/AIMS: The aim of this study was to evaluate functional results after Billroth I, Billroth II and Roux-en-Y reconstruction in subtotal gastrectomy. METHODOLOGY: Forty-five patients were randomized between 1990 and 1995 and stratified in 3 different groups: 15 BI, 15 BII and 15 Roux. They were investigated by esophagogastroduodenoscopy with ...
Mirilas Petros - - 2002
Peritoneal attachments of the liver to the diaphragm include the falciform ligament, the left triangular ligament, and the coronary ligament with the right triangular ligament. It is often surgically convenient when the gastroesophageal junction is explored to refer to a "right" and a "left" coronary ligament, but this is anatomically ...
Teo N - - 2002
AIMS: Pacemaker wires can result in stenosis of the superior vena cava and other central veins. The aim of this study is to demonstrate the safety and effectiveness of treating stenoses of the superior vena cava (SVC) and central veins with balloon venoplasty and metallic stent insertion in the presence ...
Mond Harry G - - 2002
A man with complete heart block received a Pacesetter Affinity pacemaker, programmed DDD. Two months later, the patient was beaten to death and the coroner requested telemetric information. Pacemaker stored Event Records for the previous 40 hours were retrieved and using the zoom scale, the events leading to death were ...
Altun Armagan - - 2002
This report describes a patient with a 6-year-old pacemaker lead in the left ventricle. Both transthoracic and transesophageal echocardiography unequivocally showed that the lead enters the left ventricle via the foramen ovale and the mitral valve. The patient did not suffer from a thromboembolic event; therefore, we did not proceed ...
Meijboom Willem B - - 2002
Persistent left superior vena cava is usually asymptomatic and does not cause any physiological problems (1). However it can severely complicate pacemaker implantation and render it sometimes impossible (2). In this case report we describe the implantation of a biventricular pacemaker using a left-sided approach in a patient with persistent ...
Vijayvergiya Rajesh - - 2002
Single-chamber atrial pacing is the most physiological and yet economical modality of treatment in patients with symptomatic sinus node disease with normal atrioventricular conduction. However, because of the possibility of future development of a high-degree atrioventricular block and atrial fibrillation, most patients are implanted either dual- or single-chamber right ventricular ...
Morgan D R - - 2002
The embryological development of the superior vena cava (SVC) is complex. If the left common cardinal vein fails to occlude it can, along with the left duct of Cuvier form a left SVC, which frequently drains into the coronary sinus. This may result in abnormalities in the anatomy of this ...
van Gelder Berry M - - 2002
After lead positioning during implantation of a biventricular pacing system intermittent ventricular simulation was observed. There was no pacemaker connected to any of the leads, but ventricular capture could be provoked by an intermittent contact between the lead stylet, which was still partially inserted, and a self-retaining retractor. The same ...
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