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. 2015 Dec 30;594(3):567–593. doi: 10.1113/JP271282

Table 8.

Comparison of ECG measurements before and after treatment with flecainide, metoprolol and KN‐93

		Flecainide,
	Baseline	Metoprolol, KN‐93	P
Heart rate (beats min⁻¹)	461	378	0.14
PR (ms)	37	48	0.01
QRS (ms)	12	16	< 0.001
QTc (ms)	49	47	0.12