Table 1.
Hemodynamic range found in the Echo-PIV experiments reported as median (range).
| Parameter | Unsupported (n = 3) |
Partial support (n = 7) |
Full support (n = 5) |
p (ANOVA) |
|---|---|---|---|---|
| Mean arterial pressure (mmHg) | 55.8 (48.1–60.0) | 70.5* (63.0–83.1) | 70.4* (69.0–72.5) | 0.002 |
| Left atrial pressure (mmHg) | 29.9 (23.1–33.9) | 24.3 (20.6–31.0) | 19.3*+ (11.1–21.0) | 0.011 |
| Pump flow (L/min) | – | 3.90 (2.15–4.94) | 4.21 (3.70–4.94) | 0.23# |
| Coronary flow (L/min) | 0.70 (0.69–0.80) | 0.94 (0.70–1.10) | 1.00* (0.95–1.29) | 0.009 |
| Arterial flow (L/min) | 2.36 (0.83–2.37) | 3.13* (2.56–4.27) | 3.18 (2.59–3.34) | 0.025 |
| Aortic valve flow (L/min) | 3.05 (1.50–3.14) | 0.59* (0.21–1.35) | − 0.08* (–0.40–0.19) | < 0.001 |
| Pump speed (rpm) | – | 2400 (2100–2500) | 2500 (2400–2800) | 0.03# |
| Heart rate (bpm) | 83 (39–93) | 82 (42–93) | 74 (58–83) | 0.911 |
Bold values indicate statistical significance (p < 0.05)
*p < 0.05 compared to unsupported condition (Scheffé test)
+p < 0.05 compared to partial support condition (Scheffé test)
#Two-group comparison using 2-sided t-test