IABP implantation
The patients were punctured in the right or left femoral artery, which
were placed a 40mL IABP catheter through the 8F sheath with air drained
in the 2cm below the opening of the left subclavian artery. At the same
time, the catheter was connected to the IABP (IABP System 98; Datascope;
Fairfield, NJ) machine. The ratio of counter pulsation frequency and
heart rate ranged from 1:1 to 1:2. The IABP might be removed for those
with urine volume> 30 mL/h, heart rate < 100
times /min, ventricular prephase contraction < 6 times /min.