Limitations
The present study has some limitations. This is because we only studied the perioperative time up until surgery and during the patients’ stay in the ICU.
We did not need to use the transesophageal echo Doppler echocardiography (TEDE), nevertheless the echocardiography continues to be limited by the need of full-volume data sets to capture the entire region of interest, which may not be possible in patients with irregular rhythms.
By analyzing the data with FloTrac/Vigileoď›› the additional information related to cardiac function and peripheral oxygen supply can be obtained during cardiac surgery.