Predictors and prognostic impact of post-operative atrial fibrillation in patients with hip fracture surgery

Table 1 Baseline characteristics of study patients according to occurrence of post-operative atrial fibrillation

Variables	Sinus rhythm (n = 225)	POAF (n = 20)	P value
Age (yr)	75.3 ± 13.3	84.3 ± 5.7	< 0.001
Male	79 (35.1)	7 (35.0)	0.992
Medical history
Hypertension	153 (68.0)	14 (70.0)	0.854
Diabetes	68 (30.2)	5 (25.0)	0.625
Chronic kidney disease	30 (13.3)	5 (25.0)	0.153
Coronary artery disease	15 (6.7)	3 (15.0)	0.171
Previous MI	6 (2.7)	3 (15.0)	0.005
Previous CHF	9 (4.0)	3 (15.0)	0.029
Previous stroke	27 (12.0)	1 (5.0)	0.346
COPD	14 (6.2)	6 (30.0)	< 0.001
Echocardiographic parameter
LVEF, %	59.1 ± 6.9	56.3 ± 9.2	0.096
LVEF < 50%	18 (8.0)	2 (10.0)	0.754
E/e’	10.9 ± 3.2	12.6 ± 2.8	0.047
Laboratory parameter
Hemoglobin, g/dL	11.8 ± 2.0	11.2 ± 2.1	0.227
Creatinine, mg/dL	1.0 ± 1.1	1.2 ± 0.8	0.634
CK-MB, ng/mL	2.9 ± 3.9	2.8 ± 4.3	0.863
hsTn-I, ng/L	30.3 ± 155.2	24.1 ± 29.1	0.858
NT-proBNP, pg/dL	598.8 ± 1923.4	1172.7 ± 1844.5	0.251

Data are expressed as the mean ± standard deviation, or as a number (percentage). CHF: Congestive heart failure; CK-MB: Creatine kinase-myocardial band; COPD: Chronic obstructive pulmonary disease; hsTn-I: High-sensitivity troponin I; LVEF: Left ventricular ejection fraction; MI: Myocardial infarction; NT-proBNP: N-terminal pro-brain natriuretic peptide; and POAF: Post-operative atrial fibrillation.