Table 2.
Comparison Between Patients Receiving Prolonged Mechanical Ventilation Treated With and Without Maintenance Dialysis Stratified by Clinical Factors
| Clinical factors | No. of patients (%) |
p* | |
|---|---|---|---|
| With MD | Without MD | ||
| Total | 1035 (3.4%) | 29,524 (96.6%) | |
| Survival rate | |||
| >30 Days | 67.6% | 75.3% | |
| >91 Days | 40.8% | 55.3% | |
| >182 Days | 24.1% | 44.5% | |
| >365 Days | 12.6% | 34.4% | |
| Censored | 12.1% | 26.8% | |
| Life expectancy (days, 95% CI) | 265 (249–281) | 723 (716–731) | <0.0001 |
| Gender female (%) | 545 (52.7) | 11,711 (39.7) | <0.0001 |
| Age (years) | <0.0001 | ||
| ≤60 | 218 (21.1%) | 5258 (17.8%) | |
| 60–70 | 278 (26.9%) | 4559 (15.4%) | |
| 70–80 | 392 (37.9%) | 10,101 (34.2%) | |
| >80 | 147 (14.2%) | 9606 (32.5%) | |
| Hospital size | |||
| Medical center, N (%) | 440 (42.5) | 11,013 (37.3) | 0.0007 |
| Chronic comorbidities, N (%) | |||
| DM | 355 (34.3) | 5779 (19.6) | <0.0001 |
| HTN | 318 (30.7) | 4008 (13.6) | <0.0001 |
| COPD | 36 (3.5) | 4907 (16.6) | <0.0001 |
| Cancer | 61 (5.9) | 3669 (12.4) | <0.0001 |
| Urological cancera | 15 (1.4) | 130 (0.4) | <0.0001 |
| Hydrocephalus | 26 (2.5) | 969 (3.3) | 0.1701 |
| Cirrhosis | 26 (2.5) | 800 (2.7) | 0.7000 |
| Acute comorbidities, N (%) | |||
| Pneumonia | 399 (38.6) | 14,155 (47.9) | <0.0001 |
| Septicemia | 319 (30.8) | 7091 (24.0) | <0.0001 |
| Shock | 190 (18.4) | 3662 (12.4) | <0.0001 |
| Gangrene | 11 (1.1) | 225 (0.8) | 0.2774 |
| Peritonitis | 32 (3.1) | 447 (1.5) | <0.0001 |
| Device complications | 64 (6.2) | 211 (0.7) | <0.0001 |
a
Urinary bladder or kidney cancer (ICD-9: 188 malignant neoplasm of bladder, 189 malignant neoplasm of kidney and other unspecified urinary organs).
*
p-Value refers to the comparison between patients receiving PMV treated with and without MD, using the chi-square test.
CI, confidence interval; MD, maintenance dialysis; PMV, prolonged mechanical ventilation.