Analysis of a Family with Brugada Syndrome and Sudden Cardiac Death Caused by a Novel Mutation of SCN5A

Table 2

ECG characteristics of five patients with Brugada syndrome.

Features	R-R interval (s)	P wave (mV, s)	P-R interval (s)	QRS complex (mV, s)	ST segment (s)	T wave (mV)	U wave	QT interval (s)	RV5/SV1 (mV)	RV5 + SV1 (mV)
Normal amplitude	—	0.25	—	1.60 for R peak	—	0.1–0.8	May not be observed because of its small size	—	＜2.50/1.00	＜3.50
Normal duration	0.6–1.2	0.08–0.11	0.12–0.20	0.06–0.10	0.05–0.155	0.05–0.25	Unknown	0.35–0.44	—	—
I1	0.72	0.102	0.198	0.120	0.082 s	0.139 s	No	0.338	2.12/0.93	3.05
II2	0.72	0.094	0.174	0.104	0.082 s	0.149 s	No	0.354	1.28/0.05	1.33
II3	0.85	0.098	0.152	0.116	0.036 s	0.106 s	No	0.334	1.37/0.00	1.37
III2	0.88	0.114	0.186	0.138	0.152 s	0.157 s	No	0.396	1.25/0.00	1.25
III4	1.1	0.098	0.154	0.100	0.154 s	0.164 s	No	0.394	1.49/0.76	2.25