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The QT interval is a measurement made on an electrocardiogram used to assess some of the electrical properties of the heart.It is calculated as the time from the start of the Q wave to the end of the T wave, and approximates to the time taken from when the cardiac ventricles start to contract to when they finish relaxing.
A child aged 1–3 years old can have a heart rate of 80–130 bpm, a child aged 3–5 years old a heart rate of 80–120 bpm, an older child (age of 6–10) a heart rate of 70–110 bpm, and an adolescent (age 11–14) a heart rate of 60–105 bpm. [12] An adult (age 15+) can have a heart rate of 60–100 bpm. [12]
Feb. 23—Detecting a heart murmur on your own can be tricky. A murmur is an extra heart sound that can be heard by a stethoscope. Sometimes, a murmur sounds like a humming sound, which can be ...
Normal ear anatomy Earlobe creases seen in a Japanese angina patient. Frank's sign is a diagonal crease in the ear lobe extending from the tragus across the lobule to the rear edge of the auricle. [1] The sign is named after Sanders T. Frank. [1] It has been hypothesised that Frank's sign is indicative of cardiovascular disease [2] [3] and/or ...
Feb. 13—Sweating, nausea, dizziness and unusual fatigue may not sound like typical heart attack symptoms. However, they are common for women and may occur more often when resting or asleep.
A heart rate that is too slow – below 60 beats per minute – is called bradycardia. [43] Many types of arrhythmia present no symptoms. When symptoms are present, they may include palpitations, or feeling a pause between heartbeats. More serious symptoms may include lightheadedness, passing out, shortness of breath, or chest pain. [44]
The main symptoms are severe vertigo and nystagmus. The most common symptom of vestibular neuritis is the onset of vertigo that has formed from an ongoing infection or trauma. [ 9 ] The dizziness sensation that is associated with vertigo is thought to be from the inner ear labyrinth. [ 10 ]
Secondary ear pain is a type of referred pain, meaning that the source of the pain differs from the location where the pain is felt. Primary ear pain is more common in children, whereas secondary (referred) pain is more common in adults. [13] Primary ear pain is most commonly caused by infection or injury to one of the parts of the ear. [3]