An arrhythmia is a problem with the speed or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm. A heartbeat that is too fast is called tachycardia. A heartbeat that is too slow is called bradycardia. Most arrhythmias are harmless, but some can be serious or even life threatening. When the heart rate is too slow, too fast, or irregular, the heart may not be able to pump enough blood to the body. Lack of blood flow can damage the brain, heart, and other organs.
For childhood cancer survivors, risk factors associated with lifestyle, particularly hypertension, dramatically increase the likelihood of developing serious heart problems as adults, according to a national study led by St. Jude Children's Research Hospital. The findings appear in the current issue of the Journal of Clinical Oncology.
Atrial fibrillation (AF), characterized by a rapid and irregular heartbeat, is the most common chronic arrhythmia in adults, but is rare in children. In one of the first studies of pediatric "lone AF" (AF without associated heart disease), researchers found a nearly 40% recurrence rate and that AF in the young is accompanied by substantial symptoms.
BIOTRONIK, a leading manufacturer of cardiovascular medical technology, announced it has received approval from the Food and Drug Administration (FDA) for its Ilesto family of implantable cardioverter-defibrillator/cardiac resynchronization therapy defibrillators (ICD/CRT-D devices). BIOTRONIK follows this milestone with the launch of its next generation unique technology platform Ilesto DX.
UC Davis Health System researchers have identified for the first time a biological pathway that is activated when blood sugar levels are abnormally high and causes irregular heartbeats, a condition known as cardiac arrhythmia that is linked with heart failure and sudden cardiac death.
A new study of patients who died of sudden cardiac arrest, a usually fatal condition that causes the heart to stop beating, shows the majority who qualified to receive potentially lifesaving treatment did not receive it.
Candida albicans is a double agent: In most of us, it lives peacefully, but for people whose immune systems are compromised by HIV or other severe illnesses, it is frequently deadly. Now a new study from Johns Hopkins and Harvard Medical School shows how targeting a specific fungal component might turn the fungus from a lion back into a kitten.
Respicardia, a developer of implantable therapies to improve respiratory and cardiovascular health, announced results from the remede System Pilot Study during the Heart Failure Society of America Late Breaking Scientific Session in Orlando. Dr. William T. Abraham of The Ohio State University Wexner Medical Center in Columbus presented the results for the first and only implantable device for respiratory rhythm management to treat central sleep apnea.
An estimated 80 percent of patients who have obstructive sleep apnea (OSA) go undiagnosed, including Deanna G. McNeil, a 72-year-old nurse from Toronto. Before hip replacement surgery in 2010, Deanna completed the STOP-Bang questionnaire, created by Frances Chung, M.B.B.S., professor, Department of Anesthesia, University of Toronto, Ontario. Based on the questionnaire, Deanna was suspected to have OSA.
Cardiac safety assessment is a vital part of drug development since late withdrawals of compound candidates, due to heart liability issues such as ventricular arrhythmia, are very costly. In-vivo methods give highly relevant information but are extremely low throughput allowing the analysis of only a handful of compounds.
University of Alabama at Birmingham cardiovascular physician Tom McElderry, M.D., has become the first surgeon in the United States to use the new IntellaTip MiFi™ XP catheter in a patient.
Evidence from people with heart disease strongly supports the existence of the molecular link first discovered in laboratory mice between the body's natural circadian rhythms and cardiac arrest or sudden cardiac death (SCD) - the No. 1 cause of death in heart attacks, a scientist said here today.
Parents beware. If your tots and teens get their hands on your energy drinks, they could experience seizures, heart palpitations or other problems that drive them to the hospital emergency room.
In patients with atrial fibrillation, delayed enhancement magnetic resonance imaging (DE-MRI) performed before ablative treatment can stage the degree of damaged heart tissue (atrial fibrosis) and help predict whether treatment will be successful or not, according to results of Delayed Enhancement - MRI determinant of successful Catheter Ablation of Atrial Fibrillation (DECAAF) trial.
Stroke is the second cause of death worldwide. Atrial fibrillation is the most common clinically relevant cardiac arrhythmia in Europe, affecting approximately 1.5-2% of the general population.1 Prevalence is estimated to double in the next 50 years as the population ages.
When a beating heart slips into an irregular, life-threatening rhythm, the treatment is well known: deliver a burst of electric current from a pacemaker or defibrillator. But because the electricity itself can cause pain, tissue damage and other serious side-effects, a Johns Hopkins-led research team wants to replace these jolts with a kinder, gentler remedy: light.
Respicardia, a developer of implantable therapies to improve respiratory and cardiovascular health, announced the successful implant of the first commercially-available remede system for patients with Central Sleep Apnea.
The small size and abnormal anatomy of children born with heart defects often force doctors to place lifesaving defibrillators entirely outside the heart, rather than partly inside — a less-than-ideal solution to dangerous heart rhythms that involves a degree of guesstimating and can compromise therapy.
D-Pharm Ltd., announced today on-line publication of promising results with its drug candidates, DP-460 and DP-b99, in models of human African trypanosomiasis (HAT) and malaria.
Diabetic patients taking oral fluoroquinolones, a frequently prescribed class of antibiotics, were found to have a higher risk of severe blood sugar-related problems than diabetic patients taking other kinds of antibiotics, according to a recent study from Taiwan published in Clinical Infectious Diseases.
A special iPhone case and app can be used to quickly and cheaply detect heart rhythm problems and prevent strokes, according to University of Sydney research presented at the Australia and New Zealand Cardiac Society conference today on the Gold Coast.
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