Department of Physiology, All India Institute of Medical Sciences, Deoghar, Jharkhand, India.
Department of Physiology, Raiganj Government Medical College and Hospital, Raiganj, West Bengal, India.
Indian Heart J. 2024 Jul-Aug;76(4):303-305. doi: 10.1016/j.ihj.2024.07.006. Epub 2024 Jul 14.
QT interval in an electrocardiogram (ECG) is interpreted after correction (QTc) by various formulas. This study aimed to compare the QTcs calculated by nine formulas. Sinus rhythm ECG reports of 1140 anonymous subjects showed uncorrected QT interval of 388.49 ± 42.74 ms. The QTc calculated by Bazett (443.96 ± 57.58 ms), Fridericia (424.37 ± 50.1 ms), Dmitrienko (433.59 ± 53.37 ms), Framingham (422.59 ± 45.55 ms), Schlamowitz (433.89 ± 48.05 ms), Hodges (421.6 ± 46.4 ms), Ashman (434.33 ± 54.05 ms), Rautaharju (427.75 ± 47.4 ms), and Sarma (429.22 ± 48.67 ms) showed a significant difference F (8, 10251) = 22.78 p < 0.0001. Hence, ECG should contain the formula for proper reporting and ease of interpretation by clinicians.
心电图（ECG）中的 QT 间期在经过各种公式校正（QTc）后进行解读。本研究旨在比较 9 种公式计算得出的 QTcs。1140 名匿名受试者的窦性心律心电图报告显示未经校正的 QT 间期为 388.49 ± 42.74 ms。Bazett（443.96 ± 57.58 ms）、Fridericia（424.37 ± 50.1 ms）、Dmitrienko（433.59 ± 53.37 ms）、Framingham（422.59 ± 45.55 ms）、Schlamowitz（433.89 ± 48.05 ms）、Hodges（421.6 ± 46.4 ms）、Ashman（434.33 ± 54.05 ms）、Rautaharju（427.75 ± 47.4 ms）和 Sarma（429.22 ± 48.67 ms）计算的 QTc 存在显著差异 F（8, 10251）= 22.78，p < 0.0001。因此，心电图应该包含适当的报告公式，以便临床医生进行解释。
