COVID-19 is a possible trigger for arrhythmias, transient bradycardia, and other cardiac condition.But a 2016 study suggests there is still much to learn about inherited bradyarrhythmia and other causes of the condition.Īnother more recent factor that may be causing bradyarrhythmia in some people is infection of the SARS-CoV-2 coronavirus that leads to COVID-19. It’s also possible to inherit genes that raise your risk of bradyarrhythmia. side effects from medications to treat high blood pressure or other arrhythmias.infections or other inflammatory conditions of the heart.Some other major risk factors for bradyarrhythmia include: Advancing age and the toll the years can put on the heart’s electrical system are also major contributors. Heart disease, especially if it leads to a heart attack, is a common cause of AV blocks and sick sinus syndrome. Second and third degree heart blocks typically require a pacemaker, an electrically charged device that is implanted under the chest skin to help manage heartbeats. The impulses from the atria become completely blocked so that the ventricles beat on their own, resulting in a slower, irregular heartbeat that can jeopardize the heart’s ability to pump enough blood to meet the body’s demands. Either the impulses slow so much that the heart skips a beat (Type I), or some impulses never get to the ventricles and an arrhythmia develops (Type II). The mildest type of heart block, in which electrical impulses move slower than normal from the atria through the AV node to the ventricles. The AV node can become blocked in a few different ways: This is known as an AV block or a heart block. When the electrical signal that controls the heart rate is partially or completely blocked, your heart rate can slow down or your heart can begin to beat in an irregular rhythm. The AV node is a group of cells that serve as an electrical relay station between the heart’s upper and lower chambers, controlling your heart rate. Several disorders that fall under the category of sick sinus syndrome can cause the sinus node to fail, potentially leading to a slower heart rate and an irregular heart rhythm. It acts as the heart’s natural pacemaker and controls the heart’s electrical system to ensure a steady rhythm. The sinus node is a cluster of cells the upper right chamber of the heart (right atria). There are two main types of bradyarrhythmia: sinus node dysfunction and atrioventricular (AV) blocks.
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