Predictors of postoperative atrial fibrillation after coronary artery bypass grafting: a prospective observational cohort study

Ain-Shams Journal of Anesthesiology

Table 1 The association between postoperative atrial fibrillation and patients’ characteristics

Variables		Negative (N = 82)	Positive (N = 41)	t/X²	P
Age (years), mean ± SD		56.3 ± 8.8	59.7 ± 7.9	− 2.187	0.031*
Gender, n (%)	Female	11 (13.4%)	18 (43.9%)	14.100	< 0.001*
Gender, n (%)	Male	71 (86.6%)	23 (56.1%)	14.100	< 0.001*
Smoking, n (%)	Yes	50 (61.0%)	19 (46.3%)	2.377	0.123
Smoking, n (%)	No	32 (39.0%)	22 (53.7%)	2.377	0.123
Valve replacement, n (%)	Yes	10 (12.2%)	17 (41.5%)	13.667	< 0.001*
Valve replacement, n (%)	No	72 (87.8%)	24 (58.5%)	13.667	< 0.001*
Postoperative inotropic support, n (%)	Yes	38 (46.3%)	30 (73.2%)	7.959	0.005*
Postoperative inotropic support, n (%)	No	44 (53.7%)	11 (26.8%)	7.959	0.005*
LA diameter (cm), mean ± SD		3.9 ± 0.4	4.6 ± 0.5	− 7.914	< 0.001*
CHA₂DS₂-VASc score, mean ± SD		3 ± 1	4 ± 1	4.663	< 0.001*

LA left atrium, SD standard deviation, t statistic of independent samples t test, X² statistic of Pearson’s chi-squared test
*Significant at P ≤ 0.05