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  2. QT interval - Wikipedia

    en.wikipedia.org/wiki/QT_interval

    The dimensionally correct form of Bazett's formula is: = where QTc B is the QT interval corrected for heart rate, and RR is the interval from the onset of one QRS complex to the onset of the next QRS complex. This dimensionally correct formula returns the QTc in the same units as QT, generally milliseconds.

  3. Drug-induced QT prolongation - Wikipedia

    en.wikipedia.org/wiki/Drug-induced_QT_prolongation

    The value for a normal QT interval is similar in males and females from birth up to adolescence. During infancy, a normal QTc is defined as 400 ± 20 milliseconds. Before puberty, the 99th percentile of QTc values is 460 milliseconds. After puberty, this value increases to 470 milliseconds in males and 480 milliseconds in females. [citation needed]

  4. Wikipedia : Osmosis/Long QT syndrome

    en.wikipedia.org/wiki/Wikipedia:Osmosis/Long_QT...

    So what we have to do is find the corrected QT interval, or QTc, at the different rate so that you can compare it to the QT interval at 60 beats per minute. Even though there are several formulas you can use, the Bazett’s formula’s probably the simplest, where the corrected QT interval equals the QT interval in milliseconds divided by the ...

  5. Long QT syndrome - Wikipedia

    en.wikipedia.org/wiki/Long_QT_syndrome

    Long QT syndrome (LQTS) is a condition affecting repolarization (relaxing) of the heart after a heartbeat, giving rise to an abnormally lengthy QT interval. [7] It results in an increased risk of an irregular heartbeat which can result in fainting, drowning, seizures, or sudden death. [1]

  6. Short QT syndrome - Wikipedia

    en.wikipedia.org/wiki/Short_QT_syndrome

    Encodes the potassium channel responsible for the delayed rectifier potassium current I Ks [1] SQT3 609622: KCNJ2: K ir 2.1 Encodes the potassium channel K ir 2.1 responsible for the inward rectifying potassium current I K1 [1] SQT4 114205: CACNA1C: Ca v 1.2 Encodes the alpha subunit of the L-type calcium channel carrying I Ca(L) [1] SQT5 ...

  7. UsefulCharts - Wikipedia

    en.wikipedia.org/wiki/UsefulCharts

    The company has an associated YouTube channel where Baker narrates over videos presenting educational charts. Baker has said the revenue between physical chart sales and the channel is "about 50/50." In a Global News segment covering UsefulCharts, a video detailing the history of Vancouver was highlighted. [7]

  8. List of most-subscribed YouTube channels - Wikipedia

    en.wikipedia.org/wiki/List_of_most-subscribed...

    American YouTube personality MrBeast is the most-subscribed channel on YouTube, with 348 million subscribers as of January 2025.. A subscriber to a channel on the American video-sharing platform YouTube is a user who has chosen to receive the channel's content by clicking on that channel's "Subscribe" button, and each user's subscription feed consists of videos published by channels to which ...

  9. hERG - Wikipedia

    en.wikipedia.org/wiki/HERG

    hERG (the human Ether-à-go-go-Related Gene) is a gene that codes for a protein known as K v 11.1, the alpha subunit of a potassium ion channel.This ion channel (sometimes simply denoted as 'hERG') is best known for its contribution to the electrical activity of the heart: the hERG channel mediates the repolarizing I Kr current in the cardiac action potential, which helps coordinate the heart ...