Sep 20, 2023 · A heart rate that’s excessively fast and irregular (RVR) in AFib can be dangerous, potentially leading to hemodynamic instability and symptoms such as chest pain, shortness of …

Oct 3, 2025 · A fast, pounding heartbeat could be due to AFib, a type of heart rhythm disorder. Know the warning signs and when treatment is needed.

AFib causes a fast, chaotic heartbeat. An electrocardiogram (ECG/EKG) test can show this irregular rhythm in graph form. AFib (atrial fibrillation) is an irregular heart rhythm that begins in the upper …

Mar 30, 2025 · “A sustained heart rate of greater than 120 beats per minute while in atrial fibrillation is considered dangerous,” says Hosam Hmoud, M.D., a cardiology fellow at Northwell Lenox Hill...

Jun 3, 2025 · What is considered a dangerous heart rate for someone with atrial fibrillation? A heart rate consistently over 100 beats per minute (bpm) at rest is considered dangerous for someone with atrial …

Afib is caused by extremely fast and irregular beats from the upper chambers of the heart (usually more than 400 beats per minute). A normal, healthy heartbeat involves a regular contraction of the heart …

Jul 31, 2024 · For people with AFib but not acute heart failure, the target is unclear, but it’s reasonable to stick to below 110 bpm, with a lower target if you have other symptoms. The AHA recommends a …

Sep 24, 2024 · When someone has AFib, it means they have an irregular heart rate. Some people with AFib experience no symptoms, while others often report having a fast heart rate. In AFib, unusual …

Sep 14, 2025 · Symptoms of atrial fibrillation include a rapid and irregular heartbeat, shortness of breath, and dizziness. Treatment with medication, devices, or surgery can help control your heart rate and …

Atrial fibrillation, also called afib or af, is an irregular heartbeat that can lead to stroke, blood clots, heart failure and other heart-related complications.