Table 1.
Major preoperative and postoperative symptoms and neurological dysfunction
| Symptoms | Preoperativea (%) | Postoperativeb (%) (1 month) | Recentc | ||
|---|---|---|---|---|---|
| Improved (%) | Worsened (%) | New onset (%) | (%) | ||
| Dizziness | 49/176(27.8) | 34/49(69.4) | 2/49(4.1) | 4/127(3.1) | 1/163(0.6) |
| Epilepsy | 7/176(4.0) | 2/7(28.6) | 1/7(14.3) | 6/169(3.6) | 1/163(0.6) |
| Ataxia | 46/176 (26.1) | 5/46(3.1) | 0 | 6/130(4.6) | 36/163(22.1) |
| M/H | 27/176 (15.3) | 11/27(40.7) | 7/27(25.9) | 33/149(22.1) | 40/163(24.5) |
| CN II | 30/176(17.0) | 4/30(13.3) | 1/30(3.3) | 7/146(4.8) | 36/163(22.1) |
| III | 35/176(19.9) | 3/35(8.6) | 21/35(60.0) | 59/141(41.8) | 75/163(46.0) |
| IV | 22/176(12.5) | 0 | 1/22(4.5) | 24/154(15.6) | 39/163(23.9) |
| V | 94/176(53.4) | 22/94(23.4) | 4/94(4.3) | 19/82(23.2) | 106/163(65.0) |
| VI | 11/176(6.3) | 1/11(9.1) | 0 | 43/165(26.1) | 40/163(24.5) |
| VII | 36/176(20.5) | 3/36(8.3) | 15/36(41.7) | 43/140(30.7) | 61/163(37.4) |
| VIII | 83/176(47.2) | 16/83(19.3) | 3/83(3.6) | 5/93(5.4) | 78/163(47.9) |
| IX/X | 66/176(37.5) | 21/66(31.8) | 20/66(30.3) | 25/110(22.7) | 57/163(35.0) |
| XII | 16/176(9.1) | 1/16(6.3) | 0 | 13/160 (8.1) | 30/163(18.4) |
| Dysarthria | 7/176(4.0) | 2/7(28.6) | 0 | 23/169(13.6) | 19/163(11.7) |
| Gait | 48/176(27.3) | 19/48(39.6) | 3/48(6.3) | 3/128(2.3) | 34/163(20.9) |
Notes: aNumbers of patients with neurological dysfunction before surgery. bNumbers of patients showing improved or worsened or new onset after surgery. cNumbers of patients having neurological dysfunction at follow-up.
Abbreviations: M/H, monoplegia or hemiplegia; CN, cranial nerve.