How does heart rate affect blood pressure?

A high heart rate normally affects blood pressure, causing it to rise.

1. When the heart rate is too fast, the cardiac ejection volume increases, the oxygen consumption of the heart increases, and the myocardial contractility is strengthened. At this time, the patient will experience excessive sympathetic nerve excitation, and the sympathetic nerve excitation will increase blood pressure.

2. Excessive heart rate will also activate the nerves, body fluids, and endocrine systems in the body, which will make the renin angiotensin and aldosterone system secrete hypersecretion in the body, and will also lead to further increase in blood pressure.

3. When the heart rate is too fast, the preload and afterload of the heart will increase accordingly, and the blood pressure will also increase. Therefore, under normal circumstances, if the heart rate is maintained at 60-100 beats per minute, it will not significantly affect blood pressure, but long-term heart rate more than 100 beats per minute will significantly increase blood pressure.

In short, there is a parabolic relationship between blood pressure and heart rate, as the heart rate increases, blood pressure increases, and the heart rate decreases again after reaching a certain level. Therefore, while paying attention to blood pressure, you also need to pay attention to changes in heart rate.

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