Search Results
Results 451 - 500 of 1286
< 5 6 7 8 9 10 11 12 13 14 15 >
Donataccio M - - 2006
Little is known about incidence and risk factors for incisional hernia after liver transplantation (OLT). More frequently this problem occurs at the junction of midline and transverse incisions. We prospectively and consecutively used three different types of abdominal incisions in 47 OLTs. The results were compared in order to identify ...
Lau Wendy - - 2006
Programmed upper rate pacing occurred in a patient with a rate-adaptive pacemaker when he was connected to a cardiac monitor in an emergency department. The tachycardia was mistakenly interpreted to be ventricular tachycardia and the patient received multiple DC shocks as well as intravenous amiodarone and sotalol, resulting in severe ...
Houtman S - - 2006
A patient with a ventricle-paced, ventricle-sensed and inhibited, respiratory rate-responsive pacemaker presented for orthopaedic surgery. She had been operated upon recently without any adverse effects. In the recovery unit her electrocardiograph showed a paced ventricular tachycardia of about 140 beats x min(-1) without any other adverse sign or symptom. Although ...
Cerbai Elisabetta - - 2006
Pacemaker channels play a major role in the generation of sinoatrial rhythmic activity. However, their expression is not confined to specialized myocardial cells, such as primary and subsidiary pacemakers. Electrophysiological and molecular data collected over the last ten years have demonstrated that f-channels are also present in non-pacemaker cardiomyocytes, and ...
Occhetta Eraldo - - 2006
This report describes the case of an 86-year-old male with syncopal paroxysmal 2:1 atrioventricular block and a single chamber VVI pacemaker programmed to bipolar sensing and unipolar pacing. After recurrence of syncope, a complete loss of ventricular capture with regular ventricular sensing was observed on ECG; fluoroscopic examination suggested perforation ...
Antretter H - - 2006
After heterotopic heart transplantation, a 59-year-old woman presented with remarkable symptoms of breathlessness and fatigue, despite excellent donor heart function. Asynchrony of donor and native heart provoked haemodynamic instability. Dual atrial pacemaker implantation lead to linkage and synchronization of atrial and ventricular contraction in both the donor and native heart ...
Cohen Mitchell I - - 2006
This report describes a 20-year-old man with complex congenital heart disease and inappropriate epicardial implantable cardioverter defibrillator (ICD) shocks secondary to double counting of ventricular-paced spikes and QRS complexes from a separate bipolar epicardial dual-chamber pacemaker. Adjusting to a unipolar paced-ventricular mode resolved any double counting via pacemaker-ICD interaction.
Fleischmann Kirsten E - - 2006
BACKGROUND: Dual-chamber pacemakers restore AV synchrony compared with ventricular pacemakers, but the effects on health-related quality of life (QOL) are uncertain. OBJECTIVES: The purpose of this study was to assess the effect of pacemaker implantation, clinical factors, and pacing mode on QOL. METHODS: The Mode Selection Trial (MOST) randomized 2,010 ...
Korybalska Katarzyna - - 2006
BACKGROUND: The glucose degradation products (GDP) presentin conventional peritoneal dialysis fluids (PDF) may exert adverse effects toward human peritoneal mesothelial cells (HPMC). Some GDP can be detoxified by the glyoxalase/ glutathione pathway. It has been shown that the addition of glyoxalase I (GLO-I) and reduced glutathione (GSH) to PDF effectively ...
Kaszala Karoly - - 2006
Sinus node disease and atrioventricular block are common etiologies of symptomatic bradyarrhythmias in the elderly and remain the leading indications for permanent pacemaker implantation. In fact, the vast majority (>80%) of all pacemakers are implanted in the elderly. Whereas indications of pacemaker therapy have been largely unchanged over the past ...
Makaryus Amgad N - - 2006
This report describes the case of an 80-year-old man with a history of coronary artery disease who presented with acute pericarditis secondary to pacemaker lead perforation of the ventricular wall 2 days after undergoing dual lead pacemaker implantation. The electrocardiogram revealed sinus rhythm with an intra-atrial conduction delay and intermittent ...
Gross Gil J - - 2006
After half a century of major progress in congenital heart disease management, atrioventricular conduction block continues to complicate 1-3% of surgical procedures. Unless treated with an implanted pacemaker, permanent postoperative heart block is associated with 28-100% mortality. Postoperative heart block often proves to be transient, typically resolving within 10 days ...
Kang Tae Soo - - 2006
Antiarrhythmic agents may increase capture threshold, but this is rarely of clinical significance. Flecainide acetate, a class IC agent, is reported to have a significant effect on the myocardial capture threshold. In this presentation, we report the case of a 72-year-old male, with a previously implanted VVI pacemaker due to ...
Manikoth Prakash - - 2006
A permanent bipolar cardiac pacemaker was inserted in the abdomen of a child with Down's syndrome, due to complete heart block following repair of atrioventricular septal defect. This report describes an unusual and unreported complication of the pacemaker getting extruded through the rectum without dysfunction. Implications for early diagnosis and ...
Yilmaz Ozcan - - 2006
Honey intoxication, a kind of food poisoning, can be seen in the Black Sea region of Turkey and in various other parts of the world as well. In this study, 66 patients were hospitalized with a variety of symptoms including nausea, vomiting, salivation, dizziness, weakness, hypotension, bradycardia and syncope several ...
Britton Jeffrey W - - 2006
Although pathophysiologically distinct, syncope and seizures share clinical characteristics which may make diagnosis difficult. Adding to diagnostic complexity are the facts that seizures and syncope may coexist in the same patient, syncope may be associated with seizure-like motor manifestations, and seizures may be complicated by cardiac arrhythmia and syncope. Combined ...
Chan Theodore C - - 2006
The number of patients who have cardiac pacemakers has increased markedly over the past few decades since the technology was first introduced in the 1950s. Advances in technology, expanding indications, and the aging of the population ensure that clinicians will encounter patients with cardiac pacemakers on a regular basis. This ...
Krawchuk M A - - 2006
Lightning fire is the dominant natural disturbance of the western mixedwood boreal forest of North America. We quantified the independent effects of weather and forest composition on lightning fire initiation (a detected and recorded fire start) patterns in Alberta, Canada, to demonstrate how these biotic and abiotic components contribute to ...
Nicoli Sara - - 2006
The aim of this paper was to try to single out new administration strategies for aminoglycoside antibiotics. The objectives of the work were to reduce the systemic absorption in the case of topical application and to achieve plasma levels within the therapeutic window in case of systemic administration. Amikacin (AK) ...
Rowley Donald W - - 2006
Ambulatory cardiology began in 1959 in a department of pathology to answer a question raised at the autopsy table: are high heart rates in apparently healthy individuals a risk factor for developing coronary artery disease? This question led to the development of a miniature monitor and a new kind of ...
Elahi Maqsood M - - 2006
The ability to preoperatively identify patients who may require permanent pacemaker implantation is rather poorly understood. The aim of this study is to determine the current incidence of permanent pacing after valve surgery and to determine which factors place the heart valve patient at risk of requiring permanent pacemaker implantation. ...
Sanli Arif - - 2006
Globe perforation was detected in an 18-year-old male patient having total vision loss in the left eye following a car accident. The middle meatus could not be evaluated by sinonasal endoscopy because of edema. Computed tomography showed a foreign body in the left posterior ethmoid sinus, with a trajectory coursing ...
Gould Paul A - - 2006
Biventricular pacing has been an exciting recent advance in the management of drug-refractory heart failure. This new therapy has evolved as much from necessity as scientific observation, since benefits derived from pharmacotherapy currently appear to have reached their peak. Clinical trials of biventricular pacing are establishing morbidity and mortality benefits ...
Toledo Nair S G - - 2006
OBJECTIVE: The purpose of this study was to evaluate the correlation between the radiographic and ultrasonographic measurements of craniocaudal displacement of the left hemidiaphragm. METHODS: Forty-nine patients with clinical indications for interventional procedures prospectively underwent radiographic evaluation of left hemidiaphragmatic mobility and B-mode ultrasonographic measurement of craniocaudal displacement of the ...
Burwell R G - - 2006
In the search to understand the etiology and pathogenesis of adolescent idiopathic scoliosis (AIS) some workers have focused on mechanisms initiated in embryonic life including a disturbance of bilateral (left-right or mirror-image) symmetry highly conserved in vertebrates. The normal external bilateral symmetry of vertebrates results from a default process involving ...
Naqvi Tasneem Z - - 2006
Echocardiography plays an integral role in the diagnosis of congestive heart failure including measurement of left heart pressure as well as mechanical dyssynchrony. In this report we describe novel therapeutic uses of echo pulsed wave Doppler in atrioventricular pacemaker optimization in patients who had either not derived significant symptomatic benefit ...
Abolhassani Niki N Canadian Surg. Technol. & Adv. Robotics, London, - - 2006
Accurate needle insertion into soft, inhomogeneous tissue is of practical interest because of its importance in percutaneous diagnosis and therapies. The needles used in such procedures are usually long flexible needles with bevel tips that can deflect during insertion. Deflection of the needle can not only cause misplacement of the ...
Jiang Shiqin S Sch. of Electron. & Inf. Eng., Tongji Univ., - - 2006
By studying the chaos attractor of cardiac magnetic induction strength B(z) generated by the electrical activity of the heart, we found that its projection in the reconstructed phase space has a similar shape with the map of the total current dipole vector. It is worth noting that the map of ...
Biagini Elena - - 2005
PURPOSE: Noninvasive pacemaker stress echocardiography is a newly introduced method for the diagnosis of coronary artery disease in patients with a permanent pacemaker. The prognostic value of pacemaker stress echocardiography has not been studied. SUBJECTS AND METHODS: We studied 136 patients (mean age 64+/-12 years) with a permanent pacemaker who ...
Kussman Barry D - - 2005
BACKGROUND: Anesthesia for patients with complete heart block can be associated with significant hemodynamic instability. The aim of this study is to review our anesthetic experience of neonates with congenital complete heart block (CCHB) who underwent placement of either a temporary epicardial pacing system or a permanent epicardial pacemaker. METHODS: ...
Omi Wataru - - 2006
Swallow syncope is a relatively rare syndrome that is treatable when diagnosed. A 66-year-old woman was referred to the department of cardiology because she had been suffering from recurrent syncopal attacks associated with swallowing. An ambulatory electrocardiogram revealed atrial and ventricular asystoles immediately after swallowing soup or tea that were ...
Kahloon Mansha U - - 2005
Hyperkalemia is a life threatening metabolic condition. The common risk factors for hyperkalemia include renal insufficiency, use of angiotensin converting enzyme inhibitors, potassium supplementation and excessive consumption of potassium containing diet. A mild to moderate increase in serum potassium causes an increase in myocardial excitability, but further increase leads to ...
Zechmeister H G - - 2005
Sixty moss samples were taken along transects of nine roads in Austria. The concentrations of 17 elements in four moss species were determined. There was a high correlation between several elements like Cu/Sb (0.906), Ni/Co (0.897) or Cr/V (0.898), indicating a common traffic-related source. Enrichment factors were calculated, showing highest ...
Flowers Robert S RS Plastic Surgery Center of the Pacific, Honolulu, Hawaii, - - 2005
This article describes a poorly understood yet clinically significant eyelid structure the authors have labeled the tarsal strap. The tarsal strap anchors the tarsus to the periosteum of the inferolateral orbit. Releasing this tethering band is the cornerstone of achieving lasting, superior surgical results during lateral canthopexy and periorbital restoration ...
McKelvie Jennifer R - - 2005
In situ biodegradation of benzene, toluene, and xylenes in a petroleum hydrocarbon contaminated aquifer near Fairbanks, Alaska was assessed using carbon and hydrogen compound specific isotope analysis (CSIA) of benzene and toluene and analysis of signature metabolites for toluene (benzylsuccinate) and xylenes (methylbenzylsuccinates). Carbon and hydrogen isotope ratios of benzene ...
Eitam Avi - - 2005
Priority effects, i.e., effects of an early cohort on the performance of a later cohort, are generally studied between, and not within, species. The paucity of intraspecific assessments does not reflect a lack of ecological importance, but the technical problem associated with differentiating between conspecific cohorts. Here, we examine priority ...
Bakir Ihsan - - 2005
We present the case of a 61-year-old man with a history of pacemaker implantation 15 years ago. The patient was admitted with chronic swelling of the right hemithorax and inflammation of the old incision scar after the replacement of pacemaker generator 6 years ago. The patient also presented symptoms and ...
Hucker William J - - 2005
In the normal heart, the atrioventricular node (AVN) is part of the sole pathway between the atria and ventricles, and is responsible for the appropriate atrial-ventricular delay. Under normal physiological conditions, the AVN controls appropriate frequency-dependent delay of contractions. The AVN also plays an important role in pathology: it protects ...
Li Huagui - - 2005
Patients who have pacemakers and sinus node dysfunction frequently have atrial fibrillation (AF). The need for continued pacemaker therapy after conversion to permanent AF remains uncertain. This study showed that, among 174 patients who received pacemaker implantation for sinus node dysfunction, 38% (n = 62) had the minimum intrinsic ventricular ...
Ogano Michio - - 2005
We report a patient with cardiac involvement associated with primary amyloidosis presenting marked left ventricular (LV) wall thickening, severely decreased systolic and diastolic function, and complete atrioventricular block (CAVB), who died suddenly of cardiac arrest caused by electro-mechanical uncoupling occurring immediately after permanent pacemaker implantation. Post mortem examination showed no ...
Padeletti Luigi - - 2005
Proper functioning of a pacemaker depends exclusively on the detection of intrinsic cardiac signals. Conventional devices merely establish the presence of an endocavitary potential, but do not evaluate it qualitatively. The recent incorporation of digital signal processing of sensed events in pacemaker permits diagnostic characterization heretofore impossible. METHODS: Digital processing ...
Dulcis Davide - - 2005
The heartbeat of adult Drosophila melanogaster displays two cardiac phases, the anterograde and retrograde beat, which occur in cyclic alternation. Previous work demonstrated that the abdominal heart becomes segmentally innervated during metamorphosis by peripheral neurons that express crustacean cardioactive peptide (CCAP). CCAP has a cardioacceleratory effect when it is applied ...
Seckin B - - 2005
A 21-y-old man applied to hospital with a complaint of erectile dysfunction, which started soon after a gunshot injury. The entry of the bullet was at the middle right gluteal region without any exit hole. A pelvic X-ray revealed the bullet and the scattered particles. On penile Doppler ultrasonography, the ...
Sperzel Johannes - - 2005
BACKGROUND: This study was conducted to evaluate the clinical performance of the ventricular automatic capture feature as implemented in the Insignia I Ultra pacemaker system (Guidant) utilizing a variety of ventricular leads. Currently, the optimal programming of the pacemaker output considers both pacemaker efficiency (prolonging battery longevity) and patient safety ...
Takenaka Sou - - 2005
A 69-year-old female suffering from third-degree atrioventricular block with syncope underwent permanent pacemaker implantation. However, she developed shortness of breath 2 months after the implantation. Blood tests revealed elevated levels of LDH, CRP, BNP, and SIL-2R. Transthoracic echocardiography showed thickened left and right atrial walls with mild pericardial effusion. A ...
Pokrovskii Vladimir M - - 2006
Along with the existence of an intracardiac pacemaker a generator of cardiac rhythm exists in the central nervous system - in the efferent structures of the cardiovascular center of the medullar oblongata. Neural signals originating there in the form of bursts of impulses conduct to the heart along the vagus ...
Fischer Russell J - - 2006
A new measure of heart rate variability is proposed to investigate the interaction of the sino-atrial (SA) and atrio-ventricular (AV) pacemakers. Using electrocardiogram (ECG) fiduciary markers corresponding to the depolarization time of the SA and AV pacemakers, the variability of SA and AV depolarization rate is jointly analyzed by spectral ...
Bonvini Robert F - - 2005
Pacemakers are used more and more in modern cardiology, because of the increasing age of patients and the increasing number of cases of congestive heart failure treated with biventricular stimulation. Twelve lead ECG traces of electro-stimulated patients normally can be interpreted correctly, but in emergency circumstances where only a three ...
Petrie Jean-Paul - - 2005
Transvenous cardiac pacing is a commonly employed treatment for symptomatic bradyarrhythmias in dogs. Medical management of these conditions has not proven to be successful leaving pacing as the only viable alternative. The technique of pacemaker implantation is not difficult, but successful pacemaker therapy requires an understanding of electrophysiology, cardiac fluoroscopic ...
Lassman Andrew B - - 2005
BACKGROUND: Central hypoventilation and paroxysmal hypertension are uncommon complications of medullary infarction. To our knowledge, the combination of these autonomic complications of medullary stroke has not previously been reported. OBJECTIVE: To describe a patient who experienced life-threatening paroxysmal attacks of central apnea and vasomotor instability 3 months after medullary infarction, ...
< 5 6 7 8 9 10 11 12 13 14 15 >