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.
Researchers from Amsterdam UMC have overturned a key assumption in the biological
pacemaker field.
People with rheumatic and musculoskeletal diseases (RMD) are at risk of a number of comorbidities, from cardiovascular diseases to cognitive impairment and fractures.
Smartphone-based heart rhythm monitoring from home can reduce same-day cancellations and help save significant healthcare resources ahead of planned electrical cardioversion in patients with atrial fibrillation. This is shown in a new study published in JAMA Cardiology by researchers at Karolinska Institutet and Danderyd Hospital.
Healthy lifestyle habits are crucial for childhood cancer survivors, reducing risks of chronic conditions and improving quality of life more than treatments.
Millions of people worldwide are living with undiagnosed heart rhythm disorders that can lead to stroke, heart failure or sudden cardiac death – often with little or no warning.
A study led by scientists at the Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC) provides new insights into ventricular fibrillation (VF), the most dangerous type of cardiac arrhythmia.
An 8-month low-calorie diet plus behavioral support helped older adults with overweight or obesity and persistent atrial fibrillation lose weight safely, with no intervention-related serious adverse events. However, the LOSE-AF trial found no meaningful improvement in AF symptoms, rhythm control, AF burden, cardiac remodeling, or further AF procedure rates compared with usual care.
A smart-technology wearable wristband device may be able to automatically detect cardiac arrest, which could lead to faster medical assistance and increased survival odds when cardiac arrest occurs outside of a hospital, according to new research published today in Circulation: Arrhythmia and Electrophysiology, a peer-reviewed scientific journal of the American Heart Association.
New data from the CDC WONDER database finds deaths from heart attack-related cardiogenic shock (CS) decreased between 1999 and 2020, but deaths linked to heart failure (HF) and abnormal heart rhythms have risen sharply since 2010, particularly among men.
Two new studies show that tirzepatide, a glucose-dependent insulinotropic polypeptide (GIP) receptor and glucagon-like peptide-1 (GLP-1) receptor agonist (RA), significantly reduces cardiovascular risk in high-risk patients, including those undergoing percutaneous coronary intervention (PCI) and those with obesity undergoing transcatheter aortic valve replacement (TAVR).
Physical activity in children and teenagers with cardiomyopathy (conditions that affect the heart muscle's structure and function, impairing its ability to pump or fill effectively), as well as children with implantable cardioverter-defibrillators (ICDs) may be safer than previous research suggested, according to a new scientific statement from the American Heart Association, published today in the Association's flagship peer-reviewed journal Circulation.
Working with "digital twins" of patients' hearts, doctors improved cardiac ablation outcomes for patients with life-threatening arrythmias.
The global community of heart rhythm specialists will unite in Paris from 12 to 14 April 2026 for EHRA 2026, the annual congress of the European Heart Rhythm Association (EHRA), a branch of the European Society of Cardiology (ESC).
Researchers found that people with atrial fibrillation had lower MRI-based glymphatic activity and poorer cognitive performance than healthy controls, with the greatest impairment seen in non-paroxysmal AF. In patients who underwent catheter ablation, glymphatic activity improved after sinus rhythm was restored, suggesting a possible link between heart rhythm, brain waste clearance, and cognition.
New research published in Nature Cardiovascular Research reveals that heart failure and atrial fibrillation share underlying genetic and molecular mechanisms, suggesting that the two cardiovascular conditions may be less distinct than previously thought.
A made-in-Calgary 4D heart model is transforming treatment for heart failure patients having a specialized pacemaker inserted, called cardiac resynchronization therapy (CRT).
The study reveals COVID-19 vaccines do not increase sudden cardiac death risk in youth, highlighting the importance of accurate health messaging.
Researchers analyzed gut microbiome profiles from 4,792 adults in the HELIUS cohort and tracked cardiometabolic outcomes over time to determine whether specific microbes predict disease risk. Certain microbes were linked to higher or lower cardiovascular risk, while plant-derived microbial metabolites suggested potential diet–microbiome interactions influencing heart health.
People who use drugs with anticholinergic effects, including certain antidepressants, drugs for urinary incontinence and common antihistamines, are at higher risk of developing cardiovascular disease.
Current models of mortality risk after heart failure (HF) rely primarily on cardiac-specific clinical variables and may underestimate risk in elderly East Asian patients.
Terms
While we only use edited and approved content for Azthena
answers, it may on occasions provide incorrect responses.
Please confirm any data provided with the related suppliers or
authors. We do not provide medical advice, if you search for
medical information you must always consult a medical
professional before acting on any information provided.
Your questions, but not your email details will be shared with
OpenAI and retained for 30 days in accordance with their
privacy principles.
Please do not ask questions that use sensitive or confidential
information.
Read the full Terms & Conditions.