Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"bradycardia"”.
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AMPK-MEDIATED LONG-TERM REGULATION OF HCN4CONTRIBUTES TO AGE-RELATED SINUS BRADYCARDIA
… induce a cardiac remodeling that leads to sinus bradycardia. In this context, this work highlights a possible mechanism through which AMPK regulates HCN4 channels and explores how this mechanism may be linked to the intrinsic bradycardia typical of aging.
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Evaluation of the diving reflex in response to water-based foam vs. carbon dioxide gas depopulation in White Pekin ducks
… altered terminal cardiac activity, duration of bradycardia, and onset of bradycardia to onset of unconsciousness between foam and CO2 gas for ducks aged 5-9 weeks. Experiment 2 evaluated the effects of non-terminal submersion in both flowing and standing water and water-based foam on heart rate …
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Cardiovascular effects of a low and a high dose of fentanyl in the isoflurane anesthetized dog: the influence of the anesthetic-sparing effect and the correction of bradycardia
… anesthetized dogs only following correction of bradycardia associated with its use. The objective of this study was to evaluate the effect of two doses of fentanyl on isoflurane requirement in the dog, followed by an evaluation of cardiovascular function in the isoflurane-anesthetized dog at …
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Erhöhung des hochsensitiven kardialen Troponin T bei Erkrankungen mit nicht-atherothrombotischer Myokardischämie
… occlusion can cause an elevated hsTnT, such as bradycardia, atrial fibrillation (AF), cerebral ischemia (CI), pulmonary embolism (PE), heart failure (HF), impaired kidney function and other disease states. This raises the question whether a hsTnT threshold level can be determined, above which an …
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ΚΑΡΔΙΑΓΓΕΙΑΚΕΣ ΜΕΤΑΒΟΛΕΣ ΑΠΟ ΤΗΝ ΕΝΑΠΟΘΕΣΗ ΝΟΡΕΠΙΝΕΦΡΙΝΗΣ ΚΑΙ ΚΛΟΝΙΔΙΝΗΣ ΣΤΟΝ ΠΥΡΗΝΑ ΤΗΣ ΜΟΝΗΡΟΥΣ ΔΕΣΜΙΔΑΣ ΤΟΥ ΠΡΟΜΗΚΗ ΜΥΕΛΟΥ ΜΗ ΑΝΑΙΣΘΗΤΟΠΟΙΗΜΕΝΩΝ ΕΠΙΜΥΩΝ ΚΑΙ Η ΕΠΙΔΡΑΣΗ ΤΗΣ ΓΕΝΙΚΗΣ ΑΝΑΙΣΘΗΣΙΑΣ ΣΤΙΣ ΜΕΤΑΒΟΛΕΣ ΑΥΤΕΣ
… AGONISTS INTO THE NTS RESULTS IN HYPOTENSION AND BRADYCARDIA. HOWEVER, OUR STUDIES BASED UPON NON- ANESTHETIZED RATS, SHOWED THAT NOREPINEPHRIN LOCALLY APPLIED INTO THE NTS RESULT IN HYPERTENSION AND BRADYCARDIA. BYREPEATING THE LOCAL APPLICATION OF NOREPINEPHINE AND CLONIDINE TO RATS ANESTHETIZED …
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Cocaine- and Amphetamine-Regulated Transcript Peptide Attenuates Baroreflex in the Rat.
… consistently attenuated the phenylephrineinduced bradycardia. In contrast, CARTp antibody potentiated the bradycardia produced from phenylephrine. Microinjection of saline, normal rabbit serum, or concomitant injection of CARTp and CART antibody into the NTS caused no significant change of …
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Cardiac, ventilatory and metabolic responses of two ecologically distinct species of fish to waterborne cyanide
… developed an immediate and gradually increasing bradycardia throughout the exposure period. Cyanide produced tachycardia in the bullhead followed by a gradual onset of bradycardia as the concentration of cyanide was raised. Pericardial injection of atropine (a muscarinic cholinergic antagonist) …
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Cardiac Na+, K+, Mg+2 and Ca+2 Concentrations in Chronically Exercised Rats
Bradycardia as a result of chronic exercise was induced in a group of male Sprague-Dawley rats. These experimental animals ran two hours daily, 6 days a week for 6 weeks, at a speed of 12.9 meters per minute, in a motorized running cage. Previous studies have indicated that this regimen adequately …
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Cardioregulatory Role of the Abdominal Ganglion of APLYSIA CALIFORNICA
… <li>A high frequency spike burst in L7 precedes bradycardia, a coincidental but not deterministic relationship obtained from one subject.</li> <li>Preliminary evidence indicates the presence of a nondeterministic inhibition of long duration in cell L10 associated with bradycardia.</li> <li>There …
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Magnesium sulphate reversal of established bupivacaine electrophysiological cardiotoxicity
… effects of bupivacaine toxicity. Whilst the bradycardia remains a problem it is potentially more amenable to therapy than the changes in rhythm and conduction which magnesium sulphate reversed. The opportunity therefore exists to explore the possibility of combining magnesium with a positive …
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Advanced intelligent control and optimization for cardiac pacemaker systems
… thresholds of poles and zeros to diagnose deadly bradycardia and tachycardia are derived, respectively, for the first time. For bradycardia under different states, a fuzzy proportional-integral-derivative (FPID) controller for dual- sensor cardiac pacemaker systems is designed. It can …
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The linking of angiogenesis to contractile performance and substrate metabolism in the hypertrophied and failing heart
… at inducing new capillary growth (e.g. chronic bradycardia and exposure to cold environments) and those aimed at reducing ventricular capillarity (e.g. hypertension and beta-adrenoceptor stimulation). In contrast to previous reports, capillary growth within the ventricle was very limited in …
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The Invisible Force: Optimizing Novel Approaches in Anesthesiology and Infectious Diseases
… neostigmine including autonomic dysfunction like bradycardia and post-operative nausea & vomiting (PONV), and the necessity to administer the drug at the correct time due to its lag time in effect. Sugammadex appears to circumnavigate these problems, but the literature is still not definitive. We …
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Investigating Central Chemoreception-based Biomarkers of Sudden Unexpected Death in Epilepsy (SUDEP)
… a final GTC seizure, transient apneas and bradycardia, culminating in terminal apnea and asystole. Failure to recover from postictal hypercapnia and hypoxia (HH) is a critical risk factor for SUDEP. Central chemoreception initiates adaptive cardio-respiratory and autoresuscitation responses …
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Cardiotoxicity In Hematologic Stem Cell Transplant: Keeping The Beat
… hypertension (N = 9), with a few instances of bradycardia, ventricular arrhythmia, pericardial effusion, and pericarditis. Our multivariable regression analysis identified age (older), creatinine (higher) and history of coronary artery disease to significantly correlate with risk of cardiac …
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Aspects of the sensitivity of juvenile Jasus lalandii and decapod excitable tissue to the water soluble fraction of crude oil
… WSF of crude oil on Jasus heart beat rate was bradycardia. Furthermore, the greater the initial exposure concentration the sooner the heart beat frequency decreased. 5. Exposure of Jasus muscle fibres to the WSF of crude oil resulted in a shift of the resting membrane potential of those fibres …
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The development of a neonatal vital signs database
… Clinical events recorded include apnoea, bradycardia, periodic breathing tachycardia, tachypnoea and normal traces. These events were recorded against a variety of signal quality conditions that have been characterized in Appendix C. A prototype rate detection algorithm was checked using …
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The role of propranolol in the treatment of infantile haemangioma
… indications. The main adverse effects include bradycardia, hypotension and bronchospasms. For the purposes of this study, all subjects were routinely examined, especially with regard to the cardiopulmonary systems. Any perceived anomaly was referred to the cardiorespiratory physicians at RCWMCH …
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Folate Receptor-Targeted Transplacental Delivery of Digoxin for the Treatment of Fetal Arrhythmia
… with nausea, vomiting, heart block and sinus bradycardia. Additionally, placental efflux mechanisms limit the transfer of digoxin to the fetus. When transplacental digoxin therapy fails, direct fetal injection of digoxin is performed. This can result in fetal injury, infection, and in severe …
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