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  2. Heart rate - Wikipedia

    en.wikipedia.org/wiki/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. Vital signs - Wikipedia

    en.wikipedia.org/wiki/Vital_signs

    The pulse may vary due to exercise, fitness level, disease, emotions, and medications. [11] The pulse also varies with age. A newborn can have a heart rate of 100–⁠160 bpm, an infant (0–⁠5 months old) a heart rate of 90–⁠150 bpm, and a toddler (6–⁠12 months old) a heart rate of 80–140 bpm. [12]

  4. 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]

  5. Myocardial infarction - Wikipedia

    en.wikipedia.org/wiki/Myocardial_infarction

    The level of the troponin, as well as a change over time, are useful in measuring and diagnosing or excluding myocardial infarctions, and the diagnostic accuracy of troponin testing is improving over time. [72] One high-sensitivity cardiac troponin can rule out a heart attack as long as the ECG is normal. [83] [84]

  6. 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 ...

  7. What are cardiac arrest, heart attack and heart failure? - AOL

    www.aol.com/cardiac-arrest-heart-attack-heart...

    Heart disease is a leading killer around the world and the top cause of death in the United States. It killed an estimated 17.9 million people in 2019, representing 32% of all deaths globally ...

  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. Scientists Find This Type of Exercise Cuts Heart Disease Risk ...

    www.aol.com/scientists-type-exercise-cuts-heart...

    When exercising between 1.5 and four minutes a day (with bursts lasting up to one minute), researchers saw an association of a 51% reduced risk for heart attack and a 67% reduced risk for heart ...

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