QT Measurement and Heart Rate Correction during Hypoglycemia: Is There a Bias?

Table 3

Differences at 𝑡_base and 𝑡_hypo between the two methods for QT measurement (semi-automatic slope-intersect (SI) and manual annotation (MA)) and heart rate correction (Bazett’s (QTcB) and Fridericia’s (QTcF)).

		𝑡base	𝑡hypo	t-test (𝑡hypo−𝑡base)
Difference	Method	Mean ± SD	Mean ± SD	Mean 95% CI	P-value
QTcB-QTcF	MA	6 ± 11	13 ± 10	7 [5;8]	<.001
	SI	6 ± 11	13 ± 11	8 [5;10]	<.001
SI – MA	QTcB	−13 ± 12	22 ± 51	35 [20;51]	<.001
	QTcF	−13 ± 12	21 ± 50	34 [19;49]	<.001