Tag: "sympathetic" at medical news
Short-term effects of spit tobacco suggest long-term health risks
...otective Mechanism By placing electrodes into the sympathetic
nerves of the participants, the researchers also o...blood vessels. It does this by "shutting down" the sympathetic
nervous system, so that heart rate is slower, and the widening of blood vessels starts to bring bloo...
News briefs from the journal Chest, January 2005
...Researchers speculate that sleep fragmentation and sympathetic
tone in OSAHS patients may be partially responsible for the ST-segment depression episodes, while many heart rhythm irregularities are associated with sleep fragmentation, nocturnal hypoxemia, and urinary catecholamine excretion. The study appears i...
Anger, negative emotions may trigger stroke
... blood circulation or an excessive response by the sympathetic
nervous system, which regulates body functions such as heart rate or blood pressure. The study also examined whether other factors such as positive emotions, heavy physical exertion, and heavy meals were triggers for stroke, and no significan...
Pain relief could be easy with a simple injection
...essary risk and procedural costs. While the use of sympathetic
blocks (injections) is controversial, in this stud...s. This treatment consists of injections into the sympathetic
nerves that run along the front side of the spinal column. Those who showed at least a 50% improv...
Can we learn new tricks from an old drug in treating heart attacks?
..." hormone adrenaline, preventing activation of the sympathetic
nervous system. Given intravenously, bretylium was...ttack. A clue to the importance of blocking the sympathetic
nervous system was that bretylium-treated patients remained warm and dry, with normal skin color. In...
News tips for Tuesday, November 9, 2004
... say a potential pathway may be the effects of the sympathetic
nervous system on coronary circulation. 2 p.m. Abstract 3035 Can parents' perspective offer clues to quality of life in children with heart disease? Prolonged life expectancy in children with heart disease prompts increased focus on their hea...
Laughter helps patients communicate emotion in therapy sessions
... is a commonly used measure of the activity of the sympathetic
nervous system, which controls physiologic arousal and increases such parameters as blood pressure and heart rate. Earlier studies have shown that laughter increases arousal and that elevated skin conductance is associated with increased empathy betw...
Ephedrine and unheralded sudden cardiac death
...nd lead author of the study. "Ephedrine mimics the sympathetic
nervous system, the part of the nervous system tha...dea what they did." "We have been studying how the sympathetic
nervous system destabilizes the heart's electrical system and increases the risk of arrhythmia for s...
Clerks control healthcare access for uninsured patients, study finds
...These individuals also tended to be those who were sympathetic
with the patients' plight -- some of them having previously been uninsured themselves. By contrast, 39 percent of the more senior admitting staff (supervisors who are responsible for controlling costs and ensuring payment and who have less patient c...
Successful therapy for head and neck cancer may lead to long-term circulatory problems
...bility during slow, deep respiration. To test the sympathetic
noradrenergic limb, the researchers observed blood...ostasis, and large cold pressor responses excluded sympathetic
neurocirculatory failure. Taken together, the results therefore pointed to baroreflex failure from d...
Surgery cuts cardiac arrests among those with rare heart disorder
... 40-minute surgical procedure, called left cardiac sympathetic
denervation (LCSD), reduces the heart's control from the sympathetic
nervous system, which is the part of the nervous system responsible for involuntary biological activ...
Studies highlight impact of Sept. 11, Iraq war on adolescents
...n reducing stress levels and associated indices of sympathetic
nervous system arousal in youth of military personnel," he and colleagues wrote in the abstract. "Behavioral stress reduction, such as meditation and coping skills training, might help decrease levels of anxiety so that they are not in a constant sta...
American Thoracic Society Journal news tips for February 2004 (first issue)
...ion, reduce oxygen deficiency in the blood, lessen sympathetic
nerve activity, and enhance the quality of life. The Australian investigators showed significant improvements over 3 months in 19 patients in the CPAP-treated group, as contrasted with 21 control patients who did not receive the treatment. (Congest...
EUROCARE3 publishes new childhood cancer survival figures
...ts of as much as 10% in neuroblastoma (a tumour of sympathetic
nervous system) and Ewing's sarcoma (a tumour of the bones)." The investigators also compared survival figures in Europe and the USA and found that, except for eastern Europe, survival was generally similar between the two continents although Europe ...
Overweight boys outweigh girls in stress response, study finds
...produced leptin also stimulates the stress-trigged sympathetic
nervous system. Fat also secretes angiotensinogen,... he said. The second thing estrogen does is reduce sympathetic
nervous system tone so you dont have as much vasoconstriction to begin with. Conversely, male sex ho...
NHLBI study finds hostility, impatience increase hypertension risk
...instance, they note that stress could activate the sympathetic
nervous system, causing a series of heart and blood vessel repercussions, including narrowing of the blood vessels and an increase in blood pressure. "This long-term study has given us much-needed information about the effects of psychological and s...
Other highlights in the September 17 issue of JNCI
... new study. Neuroblastomas are childhood tumors of sympathetic
nervous tissue. Catherine A. Burkhart, and Michelle Haber, Ph.D., of the Children's Cancer Institute Australia for Medical Research, and colleagues used antisense oligonucleotides to inhibit hMYCN expression in mouse models of neuroblastoma. Mice tre...
Study shows melatonin supplements may make standing a hazard for the cardiovascular-challenged
... said. The study titled, "Melatonin attenuates the sympathetic
nerve responses to orthostatic stress in humans," ...anding up. Ray used microneurography to record the sympathetic
nerve activity to the blood vessels of the muscles. Sympathetic nerve activity starts a chain reacti...
Finding the link between fat and high blood pressure
... catecholamine which gears up the stress-triggered sympathetic
nervous system. Catecholamine, in turn, is supposed to shut down leptin production, but, inexplicably, that doesn't happen either, says Dr. Harshfield. The researchers say that stress increases angiotensin II levels and therefore blood pressure. Fu...
Finding of heart drug interaction suggests path to more effective treatment
...lk to each other at the systemic level through the sympathetic
nervous system," said Liza Barki-Harrington, Ph.D., a research associate in cardiology at Duke and lead author of the study. "We wanted to know if they also talk to each other at the cellular level through direct receptor-receptor interaction." When ...
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