An EKG test records your heart rhythm and how fast your heart beats. It shows healthcare providers if you have heart block or have had a heart attack. Echocardiogram is a type of ultrasound. Sound waves are used to show the structure and function of your heart. This test may show if th...
When a person feels scared, his eyes are openHis heart beats fastFeet become warmWhat should we do when we feel scared?We should take a deep breathIt We should close our eyes.We should run and hide.What is the main(主要的) idea of this passage?
What is a heart attack?A heart attack happens when the blood vessels that supply blood to your heart are blocked. This can damage your heart or lead to an abnormal heart rhythm or heart failure. A heart attack is also called a myocardial infarction.What are the signs and symptoms of a ...
When a person feels scared, his eyes are openHis heart beats fastFeet become warmWhat should we do when we feel scared?We should take a deep breathIt We should close our eyes.We should run and hide.What is the main(主要的) idea of this passage?
Atrial flutter is another type of abnormal heart rhythm. It happens when a short circuit causes the upper chambers of your heart (atria) to pump too fast. In atrial fibrillation, the heart's electrical impulses come from multiple areas, causing the atrial walls to contract instead of contractin...
If you notice your resting heart rate increasing, it is a sign worth watching. A fast resting heart rate can indicate the start and progression of heart disease. When your heart beats too slow On the other hand, when your resting heart beats very slowly, doctors call thisbradycardia. For ...
When we exercise, what happens to our heart? A. Beats slower. B. Stops beating. C. Beats faster. D. Beats irregularly. 相关知识点: 试题来源: 解析 C。原因:文中提到 When we exercise, our heart beats faster and our blood circulates better....
When your heart beats too fast, too slow, or erratically, you have what’s called an arrhythmia.Atrial fibrillation(Afib) is the most common type of arrhythmia, and it’s one of the leading causes of stroke. Why? It prevents your heart from pumping out as much blood as it should. The...
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Elevated Heart Rate (Tachycardia) A resting heart rate higher than 100 beats per minute happens most often in kids. It's also more common in women. The primary causes of a fast heart rate include stress, smoking, or drinking too much alcohol, coffee, or other caffeinated drinks. ...