healthmedicinet

After ethics committee approval and patients’ written consent, we prospectively analyzed
20 CABG surgery patients. After initiation of mechanical ventilation and before sternotomy,
5, 10, and 20 cmH₂O PEEP were applied in 5-minute intervals consequently. After stabilization at each
PEEP level, four-chamber and two-chamber images of the right ventricle were recorded
using TEE. The right ventricle diameter, velocity, longitudinal strain, SR, and fractional
area change (RVFAC) were calculated and evaluated from the recorded images.