Table 5.

Results of multivariate analysis

Determinants of postoperative EF reduction ⩾10%	β Coefficients	p Value
First model
Sm velocity	−0.46	0.001
PCTm:CTm	0.26	0.063
Heart rate	0.16	0.87
Age	0.12	0.35
Second model
PCTm:CTm and Sm velocity	0.57	0.0001
Heart rate	0.10	0.33
Age	0.15	0.15