. 2012 Jul 23;17(3):186–194. doi: 10.1111/j.1542-474X.2012.00523.x

Table 1.

Characteristics of Measured His Bundle Feature

Subject Details	H‐V Duration (ms)	H Duration (ms)	Mean PR Segment (ms)	Mean PR Interval (ms)
#1, M61^a	42^b	24	58	132
#2, F25^a	49^b	24	81	188
#3, M43^a	33^c	10	70	161
#4, M29^a	51^d	13	62	167
#5A, M29^a	42^e	12	60	177
#5B, M29^a	39^b	12	43	135
#5C, M29^a	42^b	18	44	158
#5D, M29^a	42^d	18	52	145
#6, M25	43	15	61	143
#7, M27	39	8	65	144
#8, M63	42	13	115	214^f
#9, M27	30^c	11	46	143
#10, M28	26^c	8	47	115
#11, M28	42	16	52	135
#12, M29	35	9	48	140
#13, M27	38	12	44	134
#14, M28	46	11	52	164
#15, M28	39	11	44	136

^aSubject IDs constituting HRV studies described in the text.

^bH feature seen but observed more resolved in QRS‐onset based averaging.

^cH‐V durations are much lower than the average; H designation may not be unambiguous, because of the possible contribution from bundle branch activity. ⁸

^dBoth the averaging methodologies resolve H feature with relatively equal clarity.

^eH feature seen only in the QRS‐onset based averaging.

^fDiagnosed previously with a first degree A‐V block.