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.
In the largest study of its kind, an investigation by UC San Francisco has found no evidence that moderate coffee consumption can cause cardiac arrhythmia.
New research will help doctors identify, treat and prevent potentially dangerous irregular heartbeats in patients with hypertrophic cardiomyopathy (HCM), a common heart condition in which the heart thickens and strains to pump blood.
A team led by researchers from Cleveland Clinic and Case Western Reserve University have received a $2.95 million grant over four years from the National Institutes of Health to explore how imaging can be used to predict the risk of atrial fibrillation recurrence.
Researchers at Johns Hopkins Medicine have shown that a type of echocardiogram, a common test to evaluate whether a person's heart is pumping properly, may be useful in predicting which patients with COVID-19 are most at risk of developing atrial fibrillation - an irregular heartbeat that can increase a person's risk for heart failure and stroke, among other heart issues.
A new article has been published in Cellular and Molecular Lifesciences, which focuses on the connection between host factors and the worsening of the COVID-19. Further, the impact of the virus on the host’s microbiome and secondary infection has also been studied.
Myocarditis in children is a rare yet challenging condition to treat. Diagnosis and treatment includes multiple options, and many cases of myocarditis resolve on their own, according to a new scientific statement from the American Heart Association, "Diagnosis and Management of Myocarditis in Children," published today in Circulation, the Association's flagship journal.
A relative decline in wealth during midlife increases the likelihood of a cardiac event or heart disease after age 65 while an increase in wealth between ages 50 and 64 is associated with lower cardiovascular risk, according to a new study in JAMA Cardiology.
A global leading cause of death today is a class of dreaded disorders called cardiovascular diseases (CVD), which are ailments of the heart and blood vessels, such as arrhythmia, stroke, coronary artery diseases, cardiac arrest, and so on.
The American College of Cardiology and Heart Rhythm Society, in collaboration with the Bristol Myers Squibb-Pfizer Alliance, are launching an innovative project to improve management of atrial fibrillation in underserved communities.
Since 2005, the guidelines for the care of unconscious cardiac arrest patients have been to cool the body temperature down to 33 degrees Celsius. A large, randomized clinical trial led by Lund University and Region Skåne in Sweden has shown that this treatment does not improve survival. The study is published in the New England Journal of Medicine.
Bay Area scientists have captured the real-time electrical activity of a beating heart, using a sheet of graphene to record an optical image -- almost like a video camera -- of the faint electric fields generated by the rhythmic firing of the heart's muscle cells.
As many as 450,000 Americans die every year from a sudden, fatal heart condition, and in slightly more than one in ten cases the cause remains unexplained even after an autopsy.
Microgravity in space perturbs human physiology and is detrimental for astronaut health, a fact first realized during early Apollo missions when astronauts experienced inner ear disturbances, heart arrhythmia, low blood pressure, dehydration, and loss of calcium from their bones after their mission.
It is estimated that during a heart attack, one billion cells in the heart are lost. In the wake of the heart attack, the lost tissue is replaced by scar tissue, which can lead to heart failure, arrhythmia and death. In a new study, researchers from the University of Tsukuba have shown how cells in the scar tissue can be converted to heart muscle cells, effectively regenerating the injured heart.
For patients who have experienced certain common types of stroke, a small chip inserted under the skin may help physicians predict their likelihood of experiencing a second stroke, and therefore their likelihood of benefiting from preventive therapy.
Researchers analyzed data from a large insurance company in the United States. They found an increased risk of other medical conditions after recovering from COVID-19 irrespective of pre-existing conditions or age.
A simple surgery saves patients with heart arrhythmia from often-lethal strokes, says a large international study led by McMaster University.
Dozens of commonly used drugs, including antibiotics, antinausea and anticancer medications, have a potential side effect of lengthening the electrical event that triggers contraction, creating an irregular heartbeat, or cardiac arrhythmia called acquired Long QT syndrome.
An article published in International Journal of Hyperthermia proposes a more effective protocol for the treatment of cardiac arrhythmias when applying radiofrequency energy at the site of the arrhythmia by catheterization.
Earlier in the pandemic it was vital to see doctors over platforms like Zoom or FaceTime when in-person appointments posed risks of coronavirus exposure. Insurers were forced — often for the first time — to reimburse for all sorts of virtual medical visits and generally at the same price as in-person consultations.