The walls of the human heart are a disorganised jumble of tissue until relatively late in pregnancy despite having the shape of a fully functioning heart, according to a pioneering study.
Medical research Feb 20, 2013 | 5 / 5 (1) | 0 |
(Medical Xpress)—Some infants raised in poverty exhibit physical traits that make them more vulnerable to poor caregiving, according to new research published in Psychological Science, a journal of the Association for Ps ...
Psychology & Psychiatry Feb 19, 2013 | 5 / 5 (1) | 0
New research at Saint Louis University shows physicians do not talk to patients about the psychosocial impact and long-term risks of implanting cardioverter defibrillators (ICDs) to treat irregular heart rhythms, leaving ...
Cardiology Feb 19, 2013 | not rated yet | 0
Using powerful X-rays, University of British Columbia researchers have reconstructed a crime scene too small for any microscope to observe – and caught the culprit of arrhythmia in action.
Medical research Feb 17, 2013 | 4.7 / 5 (3) | 0
(Medical Xpress)—At first, Marc Laderriere thought that his decreasing energy was just age catching up to him—he was about to be 50. But something about that explanation didn't sit right.
Neuroscience Feb 11, 2013 | 5 / 5 (2) | 0
Using two different compounds they developed, scientists from the Florida campus of The Scripps Research Institute (TSRI) have been able to show in animal models that inhibiting a specific enzyme protects heart cells and ...
Cardiology Feb 07, 2013 | 4 / 5 (1) | 0 |
A team led by Vanderbilt University investigators has discovered two new genes – both coding for the signaling protein calmodulin – associated with severe early-onset disorders of heart rhythm. The findings, reported ...
Cardiology Feb 06, 2013 | 5 / 5 (1) | 0 |
(HealthDay)—Most heart patients with implantable cardioverter-defibrillators (ICDs) would prefer to switch off the device if they had an advanced illness, new research suggests.
Cardiology Jan 30, 2013 | not rated yet | 0
A 2011 warning from the U.S. Food and Drug Administration about the popular antidepressant citalopram (Celexa) left many patients and physicians with more questions than answers. Now an analysis of the medical records of ...
Medications Jan 29, 2013 | not rated yet | 0 |
Healthy men and women show little difference in their hearts, except for small electrocardiographic disparities. But new genetic differences found by Washington University in St. Louis researchers in hearts with disease could ...
Cardiology Jan 24, 2013 | not rated yet | 0 |
Regularly consuming sucrose—the type of sugar found in many sweetened beverages—increases a person's risk of heart disease. In a study published January 10 in the journal PLOS Genetics, researchers at San ...
Genetics Jan 17, 2013 | 4 / 5 (3) | 0 |
A new finding in neuroscience for the first time points to a developmental mechanism linking the disease-causing mutation in an autism-related disorder, Timothy syndrome, and observed defects in brain wiring, according to ...
Neuroscience Jan 14, 2013 | 4 / 5 (2) | 1 |
Researchers used induced pluripotent stem cells (iPSCs) derived from a young patient with Long QT syndrome (LQTS), a congenital heart disorder, to determine a course of treatment that helped manage the patient's ...
Cardiology Jan 11, 2013 | not rated yet | 0
Researchers have found new evidence that metabolic stress can increase the onset of atrial arrhythmias, such as atrial fibrillation (AF), a common heart condition that causes an irregular and often abnormally fast heart rate. ...
Cardiology Jan 08, 2013 | 5 / 5 (2) | 0 |
When a young athlete dies unexpectedly on the basketball court or the football field, it's both shocking and tragic. Now Stanford University School of Medicine researchers have, for the first time, identified the molecular ...
Medical research Jan 03, 2013 | 5 / 5 (1) | 0 |
Cardiac dysrhythmia (also known as arrhythmia and irregular heartbeat) is any of a large and heterogeneous group of conditions in which there is abnormal electrical activity in the heart. The heart beat may be too fast or too slow, and may be regular or irregular.
Some arrhythmias are life-threatening medical emergencies that can result in cardiac arrest. Others cause symptoms such as an abnormal awareness of heart beat (palpitations), and may be merely annoying. These palpitations have also been known to be caused by atrial/ventricular fibrillation, wire faults, and other technical or mechanical issues in cardiac pacemakers/defibrillators. Still others may not be associated with any symptoms at all, but may predispose the patient to potentially life threatening stroke or embolism.
Some arrhythmias are very minor and can be regarded as normal variants. In fact, most people will on occasion feel their heart skip a beat, or give an occasional extra strong beat; neither of these is usually a cause for alarm.
Proarrhythmia is a new or more frequent occurrence of pre-existing arrhythmias, paradoxically precipitated by antiarrhythmic therapy, which means it is a side effect associated with the administration of some existing antiarrhythmic drugs, as well as drugs for other indications. In other words, it is a tendency of antiarrhythmic drugs to facilitate emergence of new arrhythmias.
The term sinus arrhythmia refers to a normal phenomenon of mild acceleration and slowing of the heart rate that occurs with breathing in and out. It is usually quite pronounced in children, and steadily decreases with age. This can also be present during meditation breathing exercises that involve deep inhaling and breath holding patterns.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
Latest Spotlight News
(Medical Xpress)—A new study by researchers in the US has shown that an ancient virus can be modified to help in the fight against the simian immunodeficiency virus SIV, which is the equivalent in monkeys ...
16 hours ago | 5 / 5 (3) | 0 |
Two mutations central to the development of infantile myofibromatosis (IM)—a disorder characterized by multiple tumors involving the skin, bone, and soft tissue—may provide new therapeutic targets, according to researchers ...
11 hours ago | 3 / 5 (2) | 0 |
Women at a particular stage in their monthly menstrual cycle may be more vulnerable to some of the psychological side-effects associated with stressful experiences, according to a study from UCL.
13 hours ago | 3.7 / 5 (3) | 0 |
Biological processes are generally based on events at the molecular and cellular level. To understand what happens in the course of infections, diseases or normal bodily functions, scientists would need to ...
14 hours ago | 5 / 5 (4) | 0 |
(Medical Xpress)—Patients with diabetes who are depressed are much more likely to develop episodes of dangerously low blood sugars, or hypoglycemia, than are those who are not depressed, a new study has ...
17 hours ago | not rated yet | 0 |
(Medical Xpress)—Regulating the distribution of power in neurons is done by a system that makes the national electric grid look simple by comparison. Each neuron has several thousand mitochondria confined ...
May 23, 2013 | 4.9 / 5 (9) | 0 |
(Medical Xpress)—A research team, led by Jeremy Barr, a biology post-doctoral fellow, unveils a new immune system that protects humans and animals from infection.
May 20, 2013 | 4.8 / 5 (29) | 8 |
Until now, little was scientifically known about the human potential to cultivate compassion—the emotional state of caring for people who are suffering in a way that motivates altruistic behavior.
May 22, 2013 | 5 / 5 (4) | 6 |
A brief visual task can predict IQ, according to a new study. This surprisingly simple exercise measures the brain's unconscious ability to filter out visual movement. The study shows that individuals whose ...
May 23, 2013 | 4.6 / 5 (13) | 2 |
Teams of highly respected Alzheimer's researchers failed to replicate what appeared to be breakthrough results for the treatment of this brain disease when they were published last year in the journal Science.
May 23, 2013 | 3 / 5 (2) | 3 |