To establish the correlation between echocardiographic parameters of the RV, measured with TEE and the right ventricular ejection fraction (thermodilution). To identify a time in the perioperative process when RV dysfunction occurs.

Measurements with echocardiography were done during cardiac surgery to observe the right ventricular dysfunction in the perioperative process

Inclusion Criteria:

• cardiac surgery patients
• elective, isolated aortic valve replacement or coronary artery bypass grafting in combination with aortic valve replacement

Exclusion Criteria:

• age < 18

15 cardiac surgery patients (elective, isolated aortic valve replacement or coronary artery bypass grafting in combination with aortic valve replacement) with a significant preoperative aortic valve stenosis (gradient>40mmHg and/or aortic valve area <1cm2)

not available, patient data is anonym