Qtc Vzorec. When you enter qt or rr in millimeters, it is assumed that the ecg is recorded at a speed of 25mm/sec. In the text below the tool you can read more about the four qtc equations that are used.
The corrected qt interval (qtc) adjusts the qt interval correctly for heart rate extremes.
Lqts is suggested if the qtc is longer than these cutoffs. Klinicky důležité je prodloužení qtc (zejména důsledkem některých léků), které zvyšuje pravděpodobnost výskytu závažné komorové. When you enter qt or rr in millimeters, it is assumed that the ecg is recorded at a speed of 25mm/sec. Ako základ je určená srdcová f:
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