Table 7. Surgical CM-1 patient complications over time.
| Complication | 2003 (N=886) | 2006 (N=1,133) | 2009 (N=1,478) | 2012 (N=1,941) | P value |
|---|---|---|---|---|---|
| Mortality rate, n (%) | 1 (0.1) | 0 | 1 (0.1) | 3 (0.2) | 0.582 |
| Dysphagia, n (%) | 13 (1.5) | 17 (1.5) | 4 (0.3) | 3 (0.2) | <0.001* |
| Nervous system, n (%) | 11 (1.2) | 13 (1.1) | 18 (1.2) | 22 (1.1) | 0.981 |
| Cardiac, n (%) | 1 (0.1) | 1 (0.1) | 6 (0.4) | 4 (0.2) | 0.293 |
| PVD | − | − | − | − | − |
| Respiratory, n (%) | 8 (0.9) | 6 (0.5) | 6 (0.4) | 5 (0.3) | 0.103 |
| Digestive, n (%) | 8 (0.9) | 6 (0.5) | 12 (0.8) | 0 | 0.001* |
| Urinary, n (%) | 3 (0.3) | 4 (0.4) | 4 (0.3) | 2 (0.1) | 0.440 |
| Device-related, n (%) | 0 | 0 | 1 (0.1) | 1 (0.1) | 0.746 |
| Shock, n (%) | 0 | 0 | 1 (0.1) | 0 | 0.439 |
| Hematoma, n (%) | 1 (0.1) | 0 | 2 (0.1) | 0 | 0.257 |
| Puncture, n (%) | 1 (0.1) | 7 (0.6) | 2 (0.1) | 2 (0.1) | 0.016* |
| Infection, n (%) | 1 (0.1) | 7 (0.6) | 2 (0.1) | 0 | 0.257 |
| Anemia, n (%) | 1 (0.1) | 2 (0.2) | 8 (0.5) | 7 (0.4) | 0.251 |
| ARDS, n (%) | 4 (0.5) | 6 (0.5) | 15 (1.0) | 0 | <0.001* |
| Wound, n (%) | 0 | 0 | 0 | 1 (0.1) | 0.626 |
| Dural tear, n (%) | 0 | 0 | 6 (0.4) | 14 (0.7) | 0.003* |
| PE, n (%) | 0 | 0 | 0 | 1 (0.1) | 0.626 |
| DVT, n (%) | 0 | 1 (0.1) | 1 (0.1) | 1 (0.1) | 0.860 |
| Any complication, n (%) | 47 (5.3) | 54 (4.8) | 72 (4.9) | 50 (2.6) | <0.001* |
*, significance of P<0.05. CM-1, Chiari malformations type 1; PVD, peripheral vascular disease; ARDS, acute respiratory distress syndrome; PE, pulmonary embolism; DVT, deep vein thrombosis.