Tag: "rhythm" at medical news
Warfarin Continues To Be Underused As Stroke Preventive
...fCirculation. Atrial fibrillation is an abnormal rhythm
in the contraction of the upperchambers of the heart and is the strongest common risk factor for stroke. Byleading to the formation of blood clots that may travel to the brain, thecondition accounts for about 80,000 strokes annually. Achieving more...
"Happy Hour" Is Unhappy For Many Cardiac Arrest Victims
...ly be shocked, or defibrillated,back into a normal rhythm
and the other types of cardiac arrest that typicallyoccur in the morning usually can't be shocked effectively," Hallstrom says.Co-authors are Monika Peckova, M.S., Ph.D. and Carol E. Fahrenbruch, M.S.P.H....
Physicians Slow To Adopt Newer Drugs For Atrial Fibrillation
...cian education." Atrial fibrillation, an abnormal rhythm
in the contraction of the upper chambersof the hea...rrhythmicmedications, which directly address heart rhythm
problems, fall into twocategories: rate control medications, which slow the irregular heartbeat, an...
Discovery: Experiments Confirm Novel Eye Pigment Controls Circadian Rhythm
...adian rhythm. "Understanding how circadian rhythm
works has many practicalapplications," said Sancar, a member of the UNC Lineberger Comprehensive CancerCenter. "First, individuals with a disease called seasonal affective disorder,or SAD, suffer serious depression during the winter months with short...
Study Confirms Safety Of Common Heart Drug
...ng the drug risked toxic reactions,including heart rhythm
disturbances, nausea, vomiting, vision problems, andintestinal disorders. The researchers of one study pointed to a 41-percent deathrate among those who developed toxicity from the digitalis preparation. "Back in the old days, when we'd keep increas...
Radically New Type Of Surgery Tested On First Patient
...parts of the heart that have an abnormalelectrical rhythm
or to clean out arteries blocked with plaque. In the brain, itmight be able to guide instruments through a blood vessel to repair an aneurysmor venous malformation. The MSS also might be able to disseminate drugs directlyinto tumors through catheters...
Unlocking Secrets Of The Body's Inner Clock; Researchers Discover Key Control Mechanism For An Area Of The Brain That Regulates Sleep
...pinhead. The SCN isknown to regulate the circadian rhythm
-- the 24-hour cycle of sleep andwakefulness. When neurons in the SCN are damaged, the sleep cycle is disrupted. "The connection between these brain cells and the circadian cycle isclear," said Charles Allen, Ph.D., associate professor in OH...
Research Links Healthy Biological Clock To Longevity
...the day/night behaviour of an organism. When this rhythm
breaksdown, as it does in many aging humans, it leads to numerous health problemsincluding disrupted sleep patterns and poor body temperature control. Ralph saysthat while it is highly unlikely humans will ever receive new biological clocks,behaviour...
Cure For Abnormal Heart Rhythm Available To More People
...mediatelydangerous to most patients, this abnormal rhythm
imposes an extra burden on itthat eventually may damage the heart and lead to congestive heart failure, acondition in which the heart is unable to pump enough blood to meet the body'sdemands. The only way to control the condition of these patients i...
Heart Drug Finds New Use In Patients With Wolff-Parkinson-White Syndrome
...Normally, electrical impulses flow in a controlled rhythm
from the upperchambers of the heart (atria) to the...atrial fibrillation. If left untreated, the rapid rhythm
can lead to ventricular fibrillation anddeath. In addition to Glatter and Scheinman, co-authors of t...
Noninvasive test aims to prevent sudden cardiac death
...eat -- about 100,000 beats per day in near-perfect rhythm
-- for granted. But some people may suddenly develop a dangerous and irregular rhythm
that could make the heart beat wildly out of control. Identifying people with this electrical glitch...
Scientists at Children's Hospital and Brandeis use video games to unlock secrets of the brain's sense of direction
...at underpin variousbrain functions. One well-known rhythm
of about 10 cycles per second, the alphawave, is associated with relaxation, while a slower wave of 4 to 7 cycles persecond, the theta wave, seems to be important in spatial learning. In epilepsy's four million American sufferers, brain waves turn i...
Implanted defibrillators and anti-theft systems appear safe under normal circumstances
...defibrillators that shock the heartto regulate its rhythm
may safely walk through electronic anti-theft systems,but should not linger there, according to a study in today's Circulation:Journal of the American Heart Association. The anti-theft machines use an electronic beam to detect security-tagged...
Drug offers new hope for victims of cardiac arrest
... They found that resuscitation to a stable heart rhythm
was improved bynearly 30 percent in people treated with intravenous amiodarone by emergencymedical personnel at the scene of their collapse, compared to those who receivedother standard treatments for cardiac arrest. This benefit was seen eve...
Who should have heart bypass surgery? New guidelines will help doctors, patients decide together
...t ways to prevent problems such as infection,heart rhythm
problems and stroke, and suggest which medications and lifestylechanges bypass patients need. Finally, the authors call for more research onbypass in older people, minorities and diabetics - patient groups that have beenunderrepresented in past studi...
Misinterpretation of heart rhythm recordings may cause unnecessary treatments
..."that can take place during recording of the heart rhythm
as a result of bodymovement or poor skin-to-electr...ysician and one by anelectrophysiologist, or heart rhythm
specialist. Knight says artifact has many similarities to ventricular tachycardia, but thereare diff...
Northwestern researchers present findings at Neuroscience Meeting
...biological clock. Kolker, who works with circadian rhythm
expert Fred Turek, Charles E. and EmmaH. Morrison Professor of Biology at Northwestern, has repeated the study and iscurrently analyzing the data. Although no experiments have yet looked at therole that the Clock gene plays in the aging of human circ...
Stereotypes of aging may have significant effect on gaits of older persons
...een studying stride-to-strike fluctuations in gait rhythm
and the effects of aging and disease. He has found that healthy gaits fluctuate with a "fractal-like" pattern, documented a break down in the fractal nature of elderly gaits, and correlated gait dynamics with disease severity in people with neurodege...
UT Southwestern researchers find automated external defibrilators are safe and effective aboard airplanes
...sually due to ventricular fibrillation - a chaotic rhythm
of the ventricle. "Once it occurs, chances of surv...inister shock. "The victim must have the abnormal rhythm
called ventricular fibrillation to require a shock," Page explained. "Not everyone who loses conscio...
Annals of Internal Medicine tip sheet, December 5, 2000
... * * Procedure effective in treating heart rhythm
problem Radiofrequency ablation, a cardiac procedure, improves the quality of life for patients with frequent supraventricular tachycardia attacks, a cost-effectiveness study finds (Article, p. 864). Radiofrequency ablation destroys a small secti...
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