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...
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Heart rate variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. It is measured by the variation in the...
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Tachycardia (redirect from Elevated heart rate)
also called tachyarrhythmia, is a heart rate that exceeds the normal resting rate. In general, a resting heart rate over 100 beats per minute is accepted...
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audio sample of heart rate monitor Problems playing this file? See media help. A heart rate monitor (HRM) is a personal monitoring device that allows...
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Bradycardia (redirect from Slow heart rate)
Bradycardia, also called bradyarrhythmia, is a resting heart rate under 60 beats per minute (BPM). While bradycardia can result from various pathologic...
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Cardiotocography (redirect from Heart rate, fetal)
fetal heart rate and the activity of the uterine muscle are detected by two transducers placed on the mother's abdomen, with one above the fetal heart to...
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Arrhythmia (redirect from Irregular heart rate)
slow. A resting heart rate that is too fast – above 100 beats per minute in adults – is called tachycardia, and a resting heart rate that is too slow...
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QT interval (redirect from Correction for heart rate)
increase in heart rate. For example, taking normal QTc ≤ 0.42 s, QT would be expected to be 0.42 s or less at a heart rate of 60 bpm. For a heart rate of 70 bpm...
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to the heart through venules and veins. The heart beats at a resting rate close to 72 beats per minute. Exercise temporarily increases the rate, but lowers...
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Atrial fibrillation (section Rapid heart rate)
by symptoms related to a rapid heart rate. Rapid and irregular heart rates may be perceived as the sensation of the heart beating too fast, irregularly...
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Cardiac monitoring (section Heart rate monitoring)
Wearable optical heart rate monitors are less reliable than electrode-based heart rate monitors. The accuracy of the wearable optical heart rate monitors varies...
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rhythm of the heart, with an increased rate of electrical discharge from the sinoatrial node, resulting in a tachycardia, a heart rate that is higher...
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(POTS) is a condition characterized by an abnormally large increase in heart rate upon sitting up or standing. POTS is a disorder of the autonomic nervous...
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circulatory system. Initial symptoms of shock may include weakness, fast heart rate, fast breathing, sweating, anxiety, and increased thirst. This may be...
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VO2 max (section The heart rate ratio method)
{\text{minute}})} This equation uses the ratio of maximum heart rate (HRmax) to resting heart rate (HRrest) to predict V̇O2 max. The researchers cautioned...
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Cardiac conduction system (redirect from Heart conduction system)
rhythm of the heartbeat. A slow heart rate of 60 or less beats per minute is defined as bradycardia. A fast heart rate of more than 100 beats per minute...
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Electrocardiography (redirect from Heart axis)
normal heart, the heart rate is the rate at which the sinoatrial node depolarizes since it is the source of depolarization of the heart. Heart rate, like...
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Baroreflex (section Effect on heart rate variability)
blood pressure causes the heart rate to decrease. Decreased blood pressure decreases baroreflex activation and causes heart rate to increase and to restore...
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are traditionally studied via peripheral indices of arousal such as heart rate, cortisol level and skin conductance. Polyvagal theory champions the measurement...
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respect to time Temporal rate is a common type of rate ("per unit of time"), such as speed, heart rate, and flux. In fact, often rate is a synonym of rhythm...
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Pulse (redirect from Pulse rate)
measurements of heart rate variability and pulse rate variability differ. In healthy people, the pulse rate is close to the heart rate, as measured by...
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computers, particularly known for developing the world's first wireless heart rate monitor. The company is based in Kempele, Finland and was founded in 1977...
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Acting (section Heart rate)
Measuring a public speaker's heart rate is perhaps one of the easiest ways to assess changes in stress, as heart rate increases with anxiety. As actors...
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Doppler fetal monitor (redirect from Doppler fetal heart rate monitor)
Doppler effect to provide an audible simulation of the heart beat. Some models also display the heart rate in beats per minute (BPM). Use of this monitor is...
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Emily's racing heartbeat Heart sounds of a 16 year old girl immediately after running, with a heart rate of 186 BPM. The S1 heart sound is intensified due...
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the human heart is enlarged, and the resting heart rate is lower than normal. The athlete's heart is associated with physiological cardiac remodeling...
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triathletes. Forerunner series watches are designed to measure distance, speed, heart rate (optional), time, altitude, steps, and pace. The Forerunner series consists...
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system. Common signs and symptoms include fever, increased heart rate, increased breathing rate, and confusion. There may also be symptoms related to a specific...
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Bruce protocol (section Underlying Heart Rate Formulas)
Manual Maximum heart rate (MHR) is often calculated with the formula 220-age, which is quite inaccurate.[citation needed] The heart rate formula most often...
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sinus rhythm with a reduced rate of electrical discharge from the sinoatrial node, resulting in a bradycardia, a heart rate that is lower than the normal...
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