Incidence and Predictors of New-Onset Silent Atrial Fibrillation after Coronary Artery Bypass Graft Surgery
Table 3
Rhythm Characteristics According To The Occurrence of Atrial Fibrillation.
(%), median (interquartile range),
SR group
Silent AF group
Clinical AF group
mean ± SD
()
()
()
Holter ECG monitoring
Mean Heart Rate, bpm
74 ± 9
74 ± 8
79 ± 10
0.12
Mean HRV
52 (39–65)
51 (29–66)
56 (38–75)
0.50
Heart Rate D1, bpm
78 ± 10
77 ± 10
82 ± 11
0.31
HRV D1
74 (50–98)
73 (49–92)
86 (46–117)
0.70
Heart Rate D7, bpm
70 (64–78)
70 (65–83)
71 (62–82)
0.77
HRV D7
83 (66–114)
131 (79–178)
87 (56–147)
0.31
NSVT
9 (14)
3 (23)
4 (19)
0.78
AF
Time between admission and first AF record (hours)
—
2 (1–5)
1 (1-2)
0.19
First AF onset within the 4 first days of monitoring
—
7 (54%)
21 (100%)
0.001
Total duration of AF during Holter ECG monitoring (min)
—
35 (3–120)
869 (161–2366)
0.001
Number of AF episodes during Holter ECG monitoring
—
1 (1-2)
2 (1–5)
0.29
Heart rate preceding first AF episode
—
77 (71–84)
81 (69–93)
0.62
Heart rate of first AF episode
—
129 (117–144)
131 (118–151)
0.41
Night AF
—
5 (39)
10 (48)
0.52
AF indicates atrial fibrillation; bpm: beats per minute; HRV: heart rate variability; NSVT: non-sustained ventricular tachycardia; SD: standard deviation; SR: sinus rhythm. compared to SR group; compared to clinical AF group.
