Table 4 Number of microemboli on transesophageal echocardiographic evaluation of the left atrium and ventricle and the proximal ascending aorta
Time period/area of interest | No. of microemboli | P-value | |
|---|---|---|---|
Continuous CO 2 (n = 50) | One-shot CO 2 (n = 50) | ||
From release of cross-clamp until 20 min after end of CPB | |||
LA | 59 (43–79) | 98 (39–129) | < 0.001 |
LV | 49 (45–74) | 87 (59–112) | < 0.001 |
Ao | 42 (34–58) | 76 (32–88) | < 0.001 |
LA + LV + Ao | 154 (84–195) | 261(146–299) | < 0.001 |
First 15 min after release of cross-clamp | |||
LA | 46 (38–96) | 139 (99–159) | < 0.01 |
LV | 65 (58–93) | 96 (81–109) | < 0.001 |
Ao | 25 (19–39) | 75 (42–89) | < 0.001 |
LA + LV + Ao | 113 (86–157) | 310(290–343) | < 0.001 |
Last 10 min of CPB | |||
LA | 17 (11–43) | 27 (9–41) | < 0.01 |
LV | 19 (11–29) | 48 (9–59) | < 0.001 |
Ao | 16 (12–37) | 36 (25–56) | < 0.01 |
LA + LV + Ao | 52 (42–87) | 141(122–156) | < 0.001 |
First 20 min after end of CPB | |||
LA | 8 (4–21) | 48 (19–54) | < 0.01 |
LV | 13 (5–25) | 34 (15–41) | 0.01 |
Ao | 16 (8–28) | 83 (68–98) | < 0.01 |
LA + LV + Ao | 37 (27–58) | 165(120–197) | < 0.01 |