Table 4.
Comparison between measured, estimated, prescribed and delivered calories and proteins.
| All Patients (n IC = 130; n PCR = 123) | On MV (n IC = 113) | All on RRT (n IC = 38; n PCR = 39) | RRT-MV (n IC = 31) | No RRT (n IC = 92; n PCR = 84) | No RRT+ MV (n IC = 83) | |
|---|---|---|---|---|---|---|
| IC | 1724 (431) | 1771 (431) | 1730 (445) | 1798 (469) | 1722 (428) | 1762 (420) |
| Equations | ||||||
| - Harris-Benedict with stress factor | 2057 (436) a | NA | 2002 (277) a | NA | 2079 (286) c | NA |
| - Harris-Benedict | 1582 (335) a | NA | 1540 (213) c | NA | 1599 (374) a | NA |
| - 25 kcal/kg | 2116 (560) a | NA | 2174 (463) a | NA | 2092 (596) a | NA |
| - Faisy-Fagon | NA | 2089 (280) a | NA | 2119 (180) a | NA | 2079 (307) a |
| - Penn State | NA | 1793 (392) | NA | 1866 (271) | NA | 1796 (427) |
| Prescribed | 1575 (672) a | 1618 (682) b | 1593 (561) | 1659 (552) | 1568 (716) b | 1603 (724) b |
| Received | 1439 (680) b | 1475 (690) a | 1443 (568) c | 1470 (580) c | 1438 (724) c | 1476 (727) c |
| ANOVA | <0.0001 | <0.0001 | <0.0001 | <0.0001 | <0.0001 | <0.0001 |
| PCR g/24 h | 102.1 (38.7) | NA | 89.5 (29.3) | NA | 107.9 (41.1) | NA |
| nPCR (g/kg) * | 1.2 (1.09, 0.4–2.7) | NA | 1.0 (0.8, 0.4–2.3) | NA | 1.3 (1.2, 0.6–2.7) | NA |
| Calculated protein need * | 108.3 (46.2) | NA | 154.0 (51.8) d | NA | 87.1 (25.7) d | NA |
| Prescribed protein * | 76.5 (37.3) d | NA | 83.7 (30.1) | NA | 73.2 (40.0) d | NA |
| Received protein * | 69.2 (35.3) d | NA | 76.7 (31.0) e | NA | 66.2 (37.0) d | NA |
| ANOVA | <0.0001 | NA | <0.0001 | NA | <0.0001 | NA |
a p < 0.0001 vs. IC; b p < 0.05 vs. IC; c p < 0.01 vs. IC; d p < 0.0001 vs. PCR; e p = 0.0222 vs. PCR RRT; * G of protein/24 h. Data expressed as mean ± SD or mean (median, range) in the case of nPCR. IC, indirect calorimetry; MV, mechanical ventilation; NA, non applicable; RRT, renal replacement therapy. nPCR, normalized protein catabolic rate; PCR, protein catabolic rate.