However, fat, cholesterol and calcium can build plaques in the arteries, causing coronary artery disease. These plaques make it difficult for blood to flow and can put pressure on the heart.
Heart surgery Heart surgery is a life-saving operation—it can remove clots and help you get your life back. But, operating on the heart can change the way the heart works, including the way your heart beats. Heart surgery can increase your risk of arrhythmias, so your doctors will often monitor your heart after surgery.
This scar tissue can cause the heart to beat irregularly by restricting or changing the heart. After a heart attack , there is also risk of cardiomyopathy or an abnormality of the heart. With cardiomyopathy , your heart may swell and make it harder to pump blood. This can also lead to arrhythmia. If you have too many or too few electrolytes in your body, it can change the way your heart beats.
Back to Health A to Z. Atrial fibrillation is a heart condition that causes an irregular and often abnormally fast heart rate. A normal heart rate should be regular and between 60 and beats a minute when you're resting. You can measure your heart rate by checking your pulse in your wrist or neck. In atrial fibrillation, the heart rate is irregular and can sometimes be very fast. In some cases, it can be considerably higher than beats a minute.
This can cause problems including dizziness , shortness of breath and tiredness. You may be aware of noticeable heart palpitations , where your heart feels like it's pounding, fluttering or beating irregularly, often for a few seconds or, in some cases, a few minutes. Sometimes atrial fibrillation does not cause any symptoms and a person who has it is completely unaware that their heart rate is irregular.
It's important to get medical advice to make sure it's nothing serious. You could be having a heart attack.
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Declaration of interests. Blood pressure monitoring during arrhythmia: agreement between automated brachial cuff and intra-arterial measurements. Lakhal , K. Oxford Academic. Boulain T. Cite Cite K. Select Format Select format. Abstract Background. Open in new tab Download slide. Table 1 Patients' characteristics. Regular rhythm group. Arrhythmia group. P -value. Open in new tab.
Number of measurements. Lin concordance correlation coefficient Bland—Altman analysis. ISO standard. Mean bias sd mm Hg. Limits of agreement mm Hg. Mean bias ISO sd mm Hg.
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