Table 5 Complications after thyroid surgery over years 1996–2020.
Complications | I (1996–2003) | II (2011–2015, 2018–2020) | Statistic | ||||
|---|---|---|---|---|---|---|---|
Total number, n | % | Total number, n | % | chi2, df = 1 | p level | ||
Thyroid operation | 2707 | 100% | 1041 | 100% | |||
Primary | 2575 | 962 | |||||
Secondary | 132 | 79 | |||||
Bleeding | 25 | 0.92% | 9 | 0.86% | 0.03 | p = 0.8646 | |
Primary operation | 25 | 0.97% | 8 | 0.83% | 0.15 | p = 0.7014 | |
Secondary operation | 0 | 0% | 1 | 1.27% | 1.68 | p = 0.1951 | |
Hypoparathyroidism/clinical | 131 | 4.84% | 93 | 8.93% | 22.43 | p < 0.00001 | |
Primary operation | 120 | 4.66% | 81 | 8.42% | 18.47 | p < 0.00001 | |
Secondary operation | 11 | 8.33% | 12 | 15.19% | 2.39 | p = 0.1219 | |
Hypoparathyroidism/biochemical | 0 | 0 | 133 | 12.78% | 358.58 | p < 0.00001 | |
Primary operation | 0 | 0 | 110 | 11.43% | 303.89 | p < 0.00001 | |
Secondar operationy | 0 | 0 | 23 | 29.11% | 43.13 | p < 0.00001 | |
Unilateral vocal fold paresis | Total | 224 | 8.27% | 68 | 6.53% | 3.18 | p = 0.0746 |
Primary operation | 204 | 7.92% | 60 | 6.24% | 2.88 | p = 0.0897 | |
Secondary operation | 20 | 15.15% | 8 | 10.13% | 1.08 | p = 0.2978 | |
Transient: | 21 | 0.78% | 22 | 2.11% | 11.86 | p = 0.0006 | |
Primary operation | 16 | 0.62% | 20 | 2.08% | 14.77 | p = 0.0001 | |
Secondary operation | 5 | 3.79% | 2 | 2.53% | 0.24 | p = 0.6219 | |
Permanent | 203 | 7.5% | 46 | 4.42% | 11.5 | p = 0.0007 | |
Primary operation | 188 | 7.3% | 40 | 4.16% | 11.47 | p = 0.0007 | |
Secondary operation | 15 | 11.36% | 6 | 7.59% | 0.78 | p = 0.3762 | |
Bilateral vocal Fold paresis | Total | 28 | 1.03% | 7 | 0.67% | 1.06 | p = 0.3022 |
Primary operation | 23 | 0.89% | 5 | 0.52% | 1.24 | p = 0.2648 | |
Secondary operation | 5 | 3.79% | 2 | 2.53% | 0.24 | p = 0.6219 | |
Transient | 1 | 0.04% | 3 | 0.29% | 4.45 | p = 0.0349 | |
Primary operation | 0 | 0% | 1 | 0.10% | 2.68 | p = 0.1018 | |
Secondary operation | 1 | 0.76% | 2 | 2.53% | 1.11 | p = 0.2921 | |
Permanent | 27 | 1.0% | 4 | 0.38% | 3.45 | p = 0.0634 | |
Primary operation | 23 | 0.89% | 4 | 0.42% | 2.11 | p = 0.1466 | |
Secondary operation | 4 | 3.03% | 0 | 0% | 2.44 | p = 0.1183 | |
RLN at risk, n (100%) | 5414 5150 264 | 100% | 1871 1736 135 | 100% | |||
RLN injury | Total | 280 | 5.17% | 82 | 4.38% | 1.81 | p = 0.1785 |
Primary operation | 250 | 4.85% | 72 | 4.15% | 1.46 | p = 0.2277 | |
Secondary operation | 30 | 11.36% | 10 | 7.41% | 1.55 | p = 0.2132 | |
Transient | 22 | 0.41% | 25 | 1.34% | 18.75 | p < 0.00001 | |
Primary operation | 16 | 0.32% | 23 | 1.32% | 23.71 | p < 0.00001 | |
Secondary operation | 6 | 2.27% | 2 | 1.48% | 0.28 | p = 0.5937 | |
Permanent | 258 | 4.77% | 57 | 3.05% | 9.93 | p = 0.0016 | |
Primary operation | 234 | 4.54% | 49 | 2.82% | 9.76 | p = 0.0018 | |
Secondary operation | 24 | 9.09% | 8 | 5.93% | 1.21 | p = 0.2708 | |
