Table 1.
Haemodynamic and respiratory variables at different time points
| Pre - Bypass | Post - Bypass | ||||||
|---|---|---|---|---|---|---|---|
| Variables | Time points Data pairs | T1 n = 84 | T2 n = 164 | P | T3 n = 123 | T4 n = 59 | P |
| HR (minute -1 ) | 55 ± 2 | 56 ± 3 | P P = 0.45 | 80 ± 3§ | 82 ± 2§ | P P = 0.33 | |
| MAP (mmHg) | 83 ± 17 | 76 ± 12 | P <0.05 | 68 ± 7§ | 67 ± 5§ | P = 0.98 | |
| CVP (mmHg) | 10 ± 2 | 11 ± 2 | P = 0.54 | 9 ± 1 | 11 ± 1 | P 0 = 0.10 | |
| Lung compliance (mL/cmH 2 O) | 51 ± 2 | 53 ± 1 | P = 0.22 | 50 ± 2 | 49 ± 2 | P = 0.67 | |
| Tidal volume (mL) | 675 ± 75 | 686 ± 69 | P = 0.15 | 700 ± 72 | 695 ± 70 | P = 0.39 | |
| SVRI (dynes∙s/cm5/m2) | 2,712 ± 68 | 2,096 ± 327 | P <0.05 | 1,659 ± 141§ | 1 729 ± 138§ | P = 0.11 | |
| CI PPnon-cal. (L/minute/m 2 ) | 2.5 ± 0.7 | 3.4 ± 0.2 * | |||||
| CI PPcal. (L/minute/m 2 ) | 2.6 ± 0.2 | 3.2 ± 0.1# | |||||
| CI TPTD (L/minute/m 2 ) | 2.3 ± 0.1 | 2.4 ± 0.1 | P = 0.17 | 3.3 ± 0.2§ | 3.3 ± 0.2§ | P = 0.55 | |
HR, heart rate; MAP, mean arterial HR, heart.
CIPPnon-cal., cardiac index by uncalibrated pulse power analysis; CIPPcal., cardiac index by calibrated pulse power analysis; CITPTD, cardiac index by transpulmonary thermodilution; CVP, central venous pressure; HR, heart rate; MAP, mean arterial pressure;, stroke volume index by transpulmonary thermodilution; SVRI, systemic vascular resistance index; SVITPTD. Values are given as mean ± SD.
§P < 0.05 (vs. T1, T2), *P < 0.05 (vs. T1), # P < 0.05 (vs. T2).