Change in LVEF (A) and change in RVSF (B) by crossclamp time in aortic surgery patients that using the described del Nido dosing strategy based on TEE data. On multivariable analysis, cross clamp time was not found to be a predictor for change in LVEF (coefficient estimate = –0.017; 95% CI, 0.999-1.001; P = .951) but or change in RVSF (coefficient estimate = 0.000; 95% CI, 0.999-1.000; P = .745). LVEF, Left ventricular ejection fraction; RVSF, right ventricular systolic function; CI, confidence interval.