ЭКГ: залруулсан QT интервал, QTc (ECG: Corrected QT)
ЭКГ-ийн QT интервалыг зүрхний цохилтын тоонд тохируулан залруулж (QTc), Bazett, Fridericia, Framingham, Hodges-ийн томьёогоор тус тусад нь тооцно.
Bazett-ийн томьёогоор QTc
Үр дүнг харахын тулд бүх талбарыг бөглөнө үү.
Эх сурвалж
- Bazett HC. An analysis of the time-relations of electrocardiograms. Heart. 1920;7:353–370. Reprinted in: Ann Noninvasive Electrocardiol. 1997;2(2):177–194.
- Fridericia LS. Die Systolendauer im Elektrokardiogramm bei normalen Menschen und bei Herzkranken. Acta Med Scand. 1920;53:469–486. English translation in: Ann Noninvasive Electrocardiol. 2003;8(4):343–351.
- Sagie A et al. An improved method for adjusting the QT interval for heart rate (the Framingham Heart Study). Am J Cardiol. 1992;70(7):797–801.
- Hodges M, Salerno D, Erlien D. Bazett's QT correction reviewed: evidence that a linear QT correction for heart rate is better. J Am Coll Cardiol. 1983;1(2):694.
- Luo S et al. A comparison of commonly used QT correction formulae: the effect of heart rate on the QTc of normal ECGs. J Electrocardiol. 2004;37 Suppl:81–90.
- Rautaharju PM et al. AHA/ACCF/HRS recommendations for the standardization and interpretation of the electrocardiogram: part IV: the ST segment, T and U waves, and the QT interval. Circulation. 2009;119(10):e241–e250.
- Drew BJ et al. Prevention of torsade de pointes in hospital settings: a scientific statement from the American Heart Association and the American College of Cardiology Foundation. Circulation. 2010;121(8):1047–1060.