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  2. Heart rate - Wikipedia

    en.wikipedia.org/wiki/Heart_rate

    The maximum heart rate (HR max) is the age-related highest number of beats per minute of the heart when reaching a point of exhaustion [28] [29] without severe problems through exercise stress. [30] In general it is loosely estimated as 220 minus one's age. [ 31 ]

  3. Cardiac cycle - Wikipedia

    en.wikipedia.org/wiki/Cardiac_cycle

    Assuming a healthy heart and a typical rate of 70 to 75 beats per minute, each cardiac cycle, or heartbeat, takes about 0.8 second to complete the cycle. [ 2 ] [ 3 ] Duration of the cardiac cycle is inversely proportional to the heart rate.

  4. How many heartbeats do you have in a lifetime? Here's what to ...

    www.aol.com/many-heartbeats-lifetime-heres-know...

    For example, in someone 20 years of age, 200 beats per minute (bpm) is typical, with a range of 190 to 220, although 220 would be quite high and rare. For someone 60 years of age, the HRmax would ...

  5. Cardiac physiology - Wikipedia

    en.wikipedia.org/wiki/Cardiac_physiology

    The resting heart rate of a newborn can be 120 beats per minute (bpm) and this gradually decreases until maturity and then gradually increases again with age. The adult resting heart rate ranges from 60 to 100 bpm. Exercise and fitness levels, age and basal metabolic rate can all affect the heart rate. An athlete's heart rate can be lower than ...

  6. Cardiac output - Wikipedia

    en.wikipedia.org/wiki/Cardiac_output

    Major factors influencing cardiac output – heart rate and stroke volume, both of which are variable. [1]In cardiac physiology, cardiac output (CO), also known as heart output and often denoted by the symbols , ˙, or ˙, [2] is the volumetric flow rate of the heart's pumping output: that is, the volume of blood being pumped by a single ventricle of the heart, per unit time (usually measured ...

  7. Here Are Cardiologist-Approved Ways to Lower Your Resting ...

    www.aol.com/cardiologist-approved-ways-lower...

    Use the tips of your first two fingers (not your thumb) and press lightly over the artery. Count your pulse for 15 seconds and multiply by 4 to find your beats per minute. Some drugs and ...

  8. What You Need to Know About Abnormal Heart Rhythm - AOL

    www.aol.com/know-abnormal-heart-rhythm-145227534...

    An abnormal heart rhythm, or arrhythmia (also referred to as an irregular heartbeat), is a condition in which your heart beats too fast (at more than 100 beats per minute, or BPM), too slowly (at ...

  9. Atrial fibrillation - Wikipedia

    en.wikipedia.org/wiki/Atrial_fibrillation

    315,000 with atrial flutter (2019) [ 10 ] Atrial fibrillation (AF, AFib or A-fib) is an abnormal heart rhythm (arrhythmia) characterized by rapid and irregular beating of the atrial chambers of the heart. [ 11 ][ 12 ] It often begins as short periods of abnormal beating, which become longer or continuous over time. [ 4 ]

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