Article Figures & Data
Figures
- Figure 1
Plot displaying the odds ratios for postoperative complications when comparing dehydrated and not dehydrated patients. Age, sex, ethnicity, race, and body mass index were adjusted for.
- Figure 2
Plot displaying bar graph representation of 30-day mortality, postoperative complications, modified comprehensive complication index 50+, and Clavien-Dindo grade IV when comparing dehydrated and not dehydrated patients.
- Figure 3
Plot displaying bar graph representation of complications, reoperation, readmission, and hospital length of stay when comparing dehydrated and not dehydrated patients.
Tables
- Table 1
Patient demographics, operative time, length of hospital stay, and probability of morbidity and mortality for the dehydrated and not dehydrated groups.
Patient Demographic Dehydration (Blood Urea Nitrogen/Creatinine >20) P Not Dehydrated Dehydrated Mean SD Mean SD Age, y 54.65 11.40 59.52 11.22 <0.001 Body mass index 30.66 6.42 30.53 6.79 0.272 Estimated probability of morbidity 2.26% 1.22% 2.60% 1.56% <0.001 Estimated probability of mortality 0.18% 0.83% 0.30% 1.07% <0.001 Length of total hospital stay, d 1.83 3.07 2.39 4.21 <0.001 Total operation time, min 130.02 71.23 135.34 75.71 <0.001 N % N % Sex Women 4824 45.0% 2573 61.2% <0.001 Men 5901 55.0% 1633 38.8% Race Not Black 9125 85.1% 3910 93.0% <0.001 Black 1601 14.9% 296 7.0% Ethnicity Not Hispanic 10,062 93.8% 3924 93.3% <0.001 Hispanic 664 6.2% 282 6.7% Variables Dehydration (Blood Urea Nitrogen/Creatinine >20) P Not Dehydrated Dehydrated N % N % ASA Classification 1 317 3.0% 98 2.3% <0.001 2 5637 52.6% 1967 46.8% 3 4517 42.1% 1993 47.4% 4 247 2.3% 143 3.4% 5 1 0.0% 2 0.0% None assigned 7 0.1% 3 0.1% Osteoporosis Diagnosis No 10,713 99.9% 4199 99.8% Yes 13 0.1% 7 0.2% History of Congestive Heart Failure No 10,689 99.7% 4188 99.6% Yes 37 0.3% 18 0.4% History of Hypertension No 5673 52.9% 2007 47.7% Yes 5053 47.1% 2199 52.3% History of Severe COPD No 10,280 95.8% 4003 95.2% Yes 446 4.2% 203 4.8% Diabetes No 8951 83.5% 3314 78.8% Yes 1775 16.5% 892 21.2% MCCI Score by Increments 0 10,349 96.5% 3981 94.7% <0.001 0–25 124 1.2% 72 1.7% 25–42 178 1.7% 85 2.0% 42–50 41 0.4% 32 0.8% 50+ 34 0.3% 36 0.9% Abbreviations: ASA, American Society of Anesthesiologists; COPD, chronic obstructive pulmonary disease; MCCI, modified comprehensive complication index.
Note: P values are provided where applicable.
- Table 3
30-day complications, Clavien-Dindo grade IV, and mortality for the dehydrated and not dehydrated groups.
Complication Dehydration (Blood Urea Nitrogen/Creatinine >20) P Not Dehydrated Dehydrated N % N % Any No 10,328 96.3% 3966 94.3% <0.001 Yes 398 3.7% 240 5.7% Pulmonary (combined) No 10,593 98.8% 4103 97.6% <0.001 Yes 133 1.2% 103 2.4% Cardiac (combined) No 10,698 99.7% 4183 99.5% 0.006 Yes 28 0.3% 23 0.5% Wound (combined) No 10,603 98.9% 4132 98.2% 0.002 Yes 123 1.1% 74 1.8% Hematological (combined) No 10,651 99.3% 4150 98.7% <0.001 Yes 75 0.7% 56 1.3% Renal (combined) No 10,708 99.8% 4202 99.9% 0.214 Yes 18 0.2% 4 0.1% Clavien-Dindo Grade IV No 10,664 99.4% 4148 98.6% <0.001 Yes 62 0.6% 58 1.4% 30-d Mortality Lived 10,705 99.8% 4186 99.5% 0.003 Death in 30 days 21 0.2% 20 0.5% - Table 4
Readmission, reoperation, discharge destination, and delayed hospital lengths of the stays ( >5, >7, >10, and >15 d) for the dehydrated and not dehydrated groups.
Variables Dehydration (Blood Urea Nitrogen/Creatinine >20) P Not Dehydrated Dehydrated N % N % Readmission No 10,401 97.0% 4045 96.2% 0.008 Yes 325 3.0% 161 3.8% Reoperation No 10,535 98.2% 4105 97.6% 0.008 Yes 191 1.8% 101 2.4% Discharge Destination Home 10,228 95.4% 3788 90.1% <0.001 Not home 498 4.6% 418 9.9% Delayed Hospital Stay (>5 d) No 10,047 93.7% 3755 89.3% <0.001 Yes 679 6.3% 451 10.7% Delayed Hospital Stay (>7 d) No 10,330 96.3% 3909 92.9% <0.001 Yes 396 3.7% 297 7.1% Delayed Hospital Stay (>10 d) No 10,525 98.1% 4027 95.7% <0.001 Yes 201 1.9% 179 4.3% Delayed Hospital Stay (>15 d) No 10,627 99.1% 4117 97.9% <0.001 Yes 99 0.9% 89 2.1%
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