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  2. Heart rate - Wikipedia

    en.wikipedia.org/wiki/Heart_rate

    A medical monitoring device displaying a normal human heart rate. Heart rate is the frequency of the heartbeat measured by the number of contractions of the heart per minute (beats per minute, or bpm). The heart rate varies according to the body's physical needs, including the need to absorb oxygen and excrete carbon dioxide.

  3. How many heartbeats do you have in a lifetime? Here's ... - AOL

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

    Is there an average amount of lifelong heartbeats? One way, I assume, to guesstimate total lifelong heartbeats would be to use a typical resting heart rate of 72 beats per minute for adult males.

  4. Your resting heart rate can tell you a lot about your health ...

    www.aol.com/finance/resting-heart-rate-tell-lot...

    On average, though, the AHA says a resting heart rate of 60 to 100 beats per minute (bpm) is “normal” for most adults.

  5. Vital signs - Wikipedia

    en.wikipedia.org/wiki/Vital_signs

    The pulse is the rate at which the heart beats while pumping blood through the arteries, recorded as beats per minute (bpm). [11] It may also be called "heart rate". In addition to providing the heart rate, the pulse should also be evaluated for strength and obvious rhythm abnormalities. [11] The pulse is commonly taken at the wrist (radial ...

  6. Cardiac pacemaker - Wikipedia

    en.wikipedia.org/wiki/Cardiac_pacemaker

    Cells in the SA node spontaneously depolarize, ultimately resulting in contraction, approximately 100 times per minute. This native rate is constantly modified by the activity of sympathetic and parasympathetic nerve fibers via the autonomic nervous system, so that the average resting heart rate in adult humans is about 70 beats per minute.

  7. Normal Heart Rate for Elderly: What You Need to Know - AOL

    www.aol.com/normal-heart-rate-elderly-know...

    In all adults, including seniors, a normal resting heart rate can be anywhere between 60 and 100 beats per minute. But note: the lower the number within this range, the better.

  8. 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 ...

  9. Sinus rhythm - Wikipedia

    en.wikipedia.org/wiki/Sinus_rhythm

    Normal heart rate (classically 60 to 100 beats per minute for an adult). Regular rhythm, with less than 0.16-second variation in the shortest and longest durations between successive P waves; The sinus node should pace the heart – therefore, P waves must be round, all the same shape, and present before every QRS complex in a ratio of 1:1.

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