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  • Medical Science Notes – On – Atrial Fibrillation – For W.B.C.S. Examination.
    Posted on November 1st, 2019 in Medical Science
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    Medical Science Notes – On – Atrial Fibrillation – For W.B.C.S. Examination.

    মেডিকেল সায়েন্স নোট – অ্যাট্রিয়েল ফাইব্রিলেশন – WBCS পরীক্ষা।

    Atrial fibrillation is an irregular and often rapid heart rate that can increase your risk of strokes, heart failure and other heart-related complications.Continue Reading Medical Science Notes – On – Atrial Fibrillation – For W.B.C.S. Examination.

    During atrial fibrillation, the heart’s two upper chambers (the atria) beat chaotically and irregularly — out of coordination with the two lower chambers (the ventricles) of the heart. Atrial fibrillation symptoms often include heart palpitations, shortness of breath and weakness.

    Episodes of atrial fibrillation may come and go, or you may develop atrial fibrillation that doesn’t go away and may require treatment. Although atrial fibrillation itself usually isn’t life-threatening, it is a serious medical condition that sometimes requires emergency treatment.

    A major concern with atrial fibrillation is the potential to develop blood clots within the upper chambers of the heart. These blood clots forming in the heart may circulate to other organs and lead to blocked blood flow (ischemia).

    Treatments for atrial fibrillation may include medications and other interventions to try to alter the heart’s electrical system.Atrial fibrillation (AF), not to be confused with atrial flutter, is the term used to describe an irregular or abnormal heart rate.1 While AF and atrial flutter are similar,2 AF has more serious health implications such as an increased risk of having a stroke or a blood clot (thrombosis).Atrial fibrillation is an irregular heartbeat that increases the risk of stroke and heart disease. Signs include dizziness, weakness, and fatigue. Treatment involves medication and lifestyle changes, and sometimes procedures such as cardioversion, ablation, pacemakers, or surgery.

    The resting heart rate of someone without AF is usually between 60 and 100 beats per minute1 but this number is usually over 100 beats per minute in AF.It is usually the result of an underlying condition such as hypertension (high blood pressure) or having an overactive thyroid3 but may develop for no known reason. In this circumstance, the person is said to have ‘lone atrial fibrillation’.3 AF can affect people at any age but is rare in children and is more common in the elderly population.

    Symptoms

    Some people with atrial fibrillation have no symptoms and are unaware of their condition until it’s discovered during a physical examination. Those who do have atrial fibrillation symptoms may experience signs and symptoms such as:

    • Palpitations, which are sensations of a racing, uncomfortable, irregular heartbeat or a flip-flopping in your chest
    • Weakness
    • Reduced ability to exercise
    • Fatigue
    • Lightheadedness
    • Dizziness
    • Shortness of breath
    • Chest pain

    Atrial fibrillation may be:

    • Occasional. In this case it’s called paroxysmal (par-ok-SIZ-mul) atrial fibrillation. You may have symptoms that come and go, usually lasting for a few minutes to hours. Sometimes symptoms occur for as long as a week and episodes can happen repeatedly. Your symptoms might go away on their own or you may need treatment.
    • Persistent. With this type of atrial fibrillation, your heart rhythm doesn’t go back to normal on its own. If you have persistent atrial fibrillation, you’ll need treatment such as an electrical shock or medications in order to restore your heart rhythm.
    • Long-standing persistent. This type of atrial fibrillation is continuous and lasts longer than 12 months.
    • Permanent. In this type of atrial fibrillation, the abnormal heart rhythm can’t be restored. You’ll have atrial fibrillation permanently, and you’ll often require medications to control your heart rate and to prevent blood clots.

    When to see a doctor

    If you have any symptoms of atrial fibrillation, make an appointment with your doctor. Your doctor may order an electrocardiogram to determine if your symptoms are related to atrial fibrillation or another heart rhythm disorder (arrhythmia).

    If you have chest pain, seek emergency medical assistance immediately. Chest pain could signal that you’re having a heart attack.

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