Skip to main content

Table 3 Systemic and cerebral hemodynamic parameters

From: Intra-aortic balloon pump does not influence cerebral hemodynamics and neurological outcomes in high-risk cardiac patients undergoing cardiac surgery: an analysis of the IABCS trial

VariableIABP group
(N = 34)
Control group
(N = 33)
p-value effect IABPp-value effect
T1T2T3T1T2T3T1–T3
EtCO2 (mmHg)33.1 ± 3,633.1 ± 3.231.1 ± 3.4*34.7 ± 4.934.2 ± 4.033.0 ± 3.1*0.8090.004
Mean BP (mmHg)91.1 ± 13.383.2 ± 13.4*89.0 ± 9.193.5 ± 13.680.4 ± 12.1*90.3 ± 8.30.853< 0.001
Systolic (BP mmHg)132.9 ± 20.3127.0 ± 23.6*127.3 ± 18.3*138.1 ± 22.7128.2 ± 17.2*125.8 ± 16.8*0.6290.007
Diastolic BP (mmHg)67.9 ± 10.946.2 ± 13.9*#67.9 ± 8.7*69.4 ± 10.758.6 ± 11.7*70.7 ± 8.6*0.003< 0.001
HR (bpm)68.4 ± 11.4103.8 ± 17.0*89.2 ± 15.9*61.9 ± 9.1101.9 ± 13.0*90.5 ± 12.5*0.304< 0.001
ARI5.5 ± 1,94.0 ± 1.9*5.7 ± 2.05.7 ± 1.74.1 ± 1.6*5.7 ± 1.60.978< 0.001
ARI < 4 (n, %)7 (20.6%)18 (52.9%)*7 (20.5%)5 (15.1%)17 (51.5%)*4 (12.1%)0.138< 0.001
CBFV MCA (cm/s)57.3 ± 19.474.0 ± 21.6*71.1 ± 21.3*59.3 ± 11.874.7 ± 17.5*68.1 ± 15.1*0.952< 0.001
Systolic CBFV (cm/s)89.1 ± 28.5107.6 ± 32.5*109.6 ± 30.2*90.6 ± 20.5113.3 ± 24.7*101.1 ± 22.2*0.942< 0.001
Diastolic CBFV (cm/s)39.9 ± 11.433.2 ± 14.4*#49.0 ± 21.439.7 ± 8.251.5 ± 13.848.8 1 ± 0.80.001< 0.001
PI0.82 ± 0.151.03 ± 0.26*#0.85 ± 0.160.85 ± 0.170.84 ± 0.170.80 ± 0.180.001< 0.001
  1. Values are population mean ± SD. IABP intra-aortic balloon pump, EtCO2 end-tidal CO2, BP blood pressure, HR heart rate, CBFV cerebral blood flow velocity, MCA middle cerebral artery, PI pulsatility index, T1 assessment before surgery, T2 assessment 24 h after surgery, T3 assessment 7 days after surgery
  2. #p < 0.05 vs. controls; *p < 0.05 vs. time (repeated measures ANOVA)