Table 3 Oxygen consumption variables
Baseline | 30 minutes | 60 minutes | 90 minutes | 120 minutes | 150 minutes | 180 minutes | 210 minutes | 240 minutes | 270 minutes | 300 minutes | |
|---|---|---|---|---|---|---|---|---|---|---|---|
Oxygen delivery (ml O2/minute) | |||||||||||
Control | 556 (492 to 629) | 436 (386 to 493) | 607 (537 to 686) | 692 (612 to 782) | 696 (616 to 787) | 592 (523 to 669) | 533 (472 to 603) | 438 (388 to 495) | 423 (374 to 478) | 410 (363 to 463) | 441 (390 to 498) |
ALMa | 527 (466 to 595) | 569 (504 to 644) | 571 (505 to 645) | 686 (607 to 776) | 742 (656 to 838) | 740 (655 to 837) | 710 (628 to 803) | 670 (592 to 757) | 602 (533 to 681) | 619 (548 to 700) | 648b (574 to 733) |
Arterial–venous difference (ml O2/l blood) | |||||||||||
Control | 50 (46 to 55) | 69 (63 to 75) | 48 (44 to 52) | 48 (44 to 52) | 52 (47 to 57) | 57 (52 to 63) | 68 (62 to 74) | 73 (67 to 80) | 78 (71 to 85) | 78 (72 to 86) | 74 (68 to 81) |
ALMa | 48 (44 to 53) | 51 (47 to 56) | 44 (40 to 48) | 42 (39 to 46) | 41 (38 to 45) | 40 (37 to 44) | 42 (38 to 45) | 46 (42 to 51) | 46 (42 to 50) | 51 (46 to 56) | 50b (45 to 54) |
Respiratory rate (min–1) | |||||||||||
Control | 12 (11 to 13) | 12 (11 to 12) | 13 (12 to 13) | 13 (12 to 14) | 13 (13 to 14) | 13 (13 to 14) | 14 (13 to 14) | 14 (13 to 15) | 14 (13 to 15) | 14 (14 to 15) | 14 (14 to 15) |
ALM | 13 (13 to 14) | 13 (12 to 13) | 13 (12 to 13) | 13 (12 to 14) | 13 (12 to 14) | 14 (13 to 14) | 13 (13 to 14) | 14 (13 to 14) | 14 (13 to 14) | 14 (13 to 15) | 14 (14 to 15) |
Airway peak pressure (cmH2O) | |||||||||||
Control | 19 (18 to 20) | 21 (20 to 22) | 21 (20 to 22) | 21 (20 to 22) | 22 (21 to 23) | 23 (22 to 24) | 24 (23 to 25) | 24 (23 to 25) | 25 (24 to 26) | 25 (24 to 26) | 25 (24 to 26) |
ALM | 19 (18 to 20) | 21 (20 to 22) | 21 (20 to 22) | 22 (21 to 23) | 22 (21 to 23) | 23 (22 to 24) | 24 (22 to 25) | 24 (23 to 25) | 24 (23 to 25) | 24 (23 to 25) | 24 (23 to 25) |