The relationship between the low HRV preop with major postoperative cardiovascular events preop cardiovascular events Low HRV (n=119) OR 95% (CI) p Yes No 3 months postop (n,%) Yes 6 (54, 50) 5 (45, 50) 3, 40 0, 97 - 12, 11 >0, 05 No 28 (25, 90) 80 (74, 10) 6 months postop (n,%) Yes 7 (53, 80) 6 (46, 20) 3, 41 1, 05 - 11, 05 <0, 05 No 27 (25, 50) 79 (74, 50) 3.3.2.2.