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Arrhythmia

byCardiac Rhythm Disorders
November 18, 2019
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Heart rhythm problems, also called arrhythmias, mean that your heartbeat is too fast, too slow, or irregular.

Your heart has a built-in electrical system that organizes and times your heartbeat. A network of very special cells in your heart muscle conducts electricity — and that electrical signal makes your heart muscle contract.

In a healthy heart, the heartbeat starts at a bundle of cells called the sino-atrial (SA) node. The SA node sends an electrical impulse to the upper chambers of your heart, the atria, causing them to contract. Then the signal arrives at another bundle of cells called the atrio-ventricular (AV) node.

The AV node passes the signal to the lower chambers of your heart, called the ventricles, causing them to contract as well. The process repeats with every heartbeat and is highlighted in the image below in yellow.

Problems happen when the SA node, also called the heart’s natural pacemaker, is no longer in control of the electrical impulses in your heart muscle. This disrupts your heart’s normal rhythm and makes it work less efficiently.

 

 

Title

Risk Factors for Intrauterine Deaths in The Third Trimester of Pregnancy. A holistic approach of case series and literature review

Authors

Jimakos

Abstract

Atrial fibrillation (AF) is the most common sustained arrhythmia, causing a 2-fold increase in mortality and a 5-fold increase in stroke. The Asian population is rapidly aging, and in 2050, the estimated population with AF will reach 72 million, of whom 2.9 million may suffer from AF-associated stroke. Therefore, stroke prevention in AF is an urgent issue in Asia. Many innovative advances in the management of AF-associated stroke have emerged recently, including new scoring systems for predicting stroke and bleeding risks, the development of non-vitamin K antagonist oral anticoagulants (NOACs), knowledge of their special benefits in Asians, and new techniques. The Asia Pacific Heart Rhythm Society (APHRS) aimed to update the available information, and appointed the Practice Guideline sub-committee to write a consensus statement regarding stroke prevention in AF. The Practice Guidelines sub-committee members comprehensively reviewed updated information on stroke prevention in AF, emphasizing data on NOACs from the Asia Pacific region, and summarized them in this 2017 Consensus of the Asia Pacific Heart Rhythm Society on Stroke Prevention in AF. This consensus includes details of the updated recommendations, along with their background and rationale, focusing on data from the Asia Pacific region. We hope this consensus can be a practical tool for cardiologists, neurologists, geriatricians, and general practitioners in this region. We fully realize that there are gaps, unaddressed questions, and many areas of uncertainty and debate in the current knowledge of AF, and the physician׳s decision remains the most important factor in the management of AF.

References

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