Table 2.
Hemodynamic variables during the first minute of cardiac arrest
| Variable | Time period (sec) |
||||||
|---|---|---|---|---|---|---|---|
| 5–7.5 | 15–17.5 | 25–27.5 | 35–37.5 | 45–47.5 | 55–57.5 | P-value | |
| HR (beats/min) | 135.8±8.42 | 132.32±6.33 | 133.6±5.35 | 133.51±5.15 | 132.64±4.28 | 130.62±2.88 | 0.102 |
| SAP (mm Hg) | 36.91±1.20 | 35.02±1.91 | 34.33±0.82 | 32.25±0.90 | 31.07±0.55 | 30.29±0.81 | 0.048 |
| DAP (mm Hg) | 23.52±0.90 | 22.67±1.15 | 23.55±2.52 | 23.13±1.70 | 23.11±1.61 | 23.04±1.30 | 0.223 |
| MAP (mm Hg) | 27.98±2.10 | 26.82±1.42 | 27.13±1.95 | 26.17±1.40 | 25.80±1.23 | 25.50±1.14 | 0.046 |
| SVR (dyn·s/cm5) | 575.5±36.64 | 534.8±22.1 | 489.5±23.62 | 469.3±21.8 | 429.4±18.6 | 401.5±16.7 | 0.016 |
| CPP (mm Hg) | 19.32±0.73 | 18.33±0.55 | 18.02±0.57 | 17.82±1.13 | 17.70±0.92 | 17.62±0.66 | 0.046 |
| PP (mm Hg) | 13.38±0.35 | 12.35±0.88 | 10.78±1.15 | 9.12±1.14 | 7.96±1.42 | 7.25±0.48 | 0.040 |
| SI | 3.72±0.02 | 3.77±0.05 | 3.92±0.05 | 4.14±0.06 | 4.27±0.04 | 4.31±0.05 | 0.048 |
| MSI | 4.95±0.04 | 4.92±0.05 | 4.90±0.07 | 5.12±0.03 | 5.15±0.05 | 5.13±0.12 | 0.088 |
| Pmsf | 4.20±0.22 | 4.11±0.23 | 4.12±0.12 | 3.94±0.22 | 3.93±0.21 | 3.72±0.23 | 0.102 |
| ETCO2 (mm Hg) | 12.84±2.13 | 11.44±1.55 | 10.75±0.37 | 10.11±0.35 | 9.96±0.35 | 9.23±0.45 | 0.036 |
Values are presented as mean±standard deviation.
HR: heart rate; SAP: systolic arterial pressure; DAP: diastolic arterial pressure; MAP: mean arterial pressure; SVR: systemic vascular resistance; CPP: coronary perfusion pressure; PP: pulse pressure; SI: shock index; MSI: modified shock index; Pmsf: mean systemic filling pressure; ETCO2: end-tidal carbon dioxide.