![]() Atrial fibrillation does not cause symptoms in some people, while others may have strong symptoms, such as chest pain, shortness of breath, dizziness and nausea. The heart rate usually accelerates and becomes irregular during atrial fibrillation. Atrial fibrillation typically involves rapid, unorganised electrical and mechanical functions (“the ventricles fibrillate”). Other heart diseases, particularly heart failure, increase the prevalence of atrial fibrillation, but approximately one-third of all cases of atrial fibrillation are ‘autonomic’ atrial fibrillation, for which no cause has been found. The condition is rare in people under 60 years of age, while over 10% of the population over 75 years of age have atrial fibrillation. The most common form of long‑term arrhythmia is atrial fibrillation. ![]() The palpitations usually continue for a few minutes, but may last up to several hours.Īrrhythmia symptom – when to seek treatment? The palpitations begin and end quickly and the heart rate is even and fast, often 150–200/min and sometimes faster. In young people and the working‑age population, a bout of heart palpitations often results from a congenital abnormality in the electrical conduction system of the heart. If the heart is racing for no reason, you may have arrhythmia. ![]() High fever, dehydration, anxiety, fright or medication (such as asthma medications which open airways, specific cough medicines and nose drops) can increase the heart rate. An accelerated heart rate usually results from the normal acceleration of the heart rate as a result of physical exertion. In tachycardia, the heart rate exceeds 100/min and usually causes a sensation of palpitations. Age, physical fitness and many other factors affect the resting heart rate. ![]() A normal resting heart rate can vary between 40–100/min. The normal rhythm of the heart begins in the sinus node located in the upper section of the right heart ventricle and is called sinus rhythm. What is arrhythmia and how to identify it? ![]()
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