Differences in cardiac output of patients undergoing trans-catheter aortic valve implantation according to their underlying rhythm

Table 1 Clinical characteristics of included patients stratified according to the presence of atrial fibrillation, mean ± SD/n (%)/median (interquartile range)

Variable	Whole cohort (n = 138)	Non-atrial fibrillation (n = 107)	Atrial fibrillation (n = 31)	P value
Age	82 ± 6	82 ± 6	82 ± 6	0.77
Male gender	30 (22)	26 (24)	4 (13)	0.18
Body surface area	1.8 ± 0.2	1.8 ± 0.2	1.8 ± 0.2	0.64
Diabetes	37 (27)	25 (23)	12 (39)	0.089
Smoker	10 (7)	10 (9)	0 (0)	0.077
Hemoglobin	121 ± 17	121 ± 17	121 ± 18	0.72
Previous MI	14 (10)	10 (9)	4 (13)	0.56
Chronic lung disease	36 (26)	27 (25)	9 (29)	0.67
Previous CVA/TIA	20 (15)	14 (13)	6 (19)	0.38
Previous cardiac surgery	17 (12)	10 (9)	7 (23)	0.048
Valve size	23 (23-26)	23 (23-26)	23 (23-26)	0.50
Peak gradient	79 ± 25	77 ± 26	85 ± 22	0.17
Mean gradient	47 ± 18	46 ± 18	51 ± 15	0.25
Valve area	0.66 ± 0.16	0.68 ± 0.16	0.59 ± 0.15	0.005
Low flow low gradient	27 (20)	23 (22)	4 (13)	0.29
Preserved LV function	112 (81)	88 (82)	21 (68)	0.081
Annulus area	378 ± 39	377 ± 40	384 ± 38	0.37

MI: Myocardial infarction; CVA: Cerebrovascular event; TIA: Transient ischemic attack; LV: Left ventricle.