Case Report
Dementia after DBS Surgery: A Case Report and Literature Review
Table 1
Neuropsychological test battery results.
| Psychological test | Examination date | 10/2005 | 1/2006* | 3/2006** | 6/2006 | 11/2006 | 3/2007 | 7/2008 |
| WAIS-R (IQ) | 129 | 14 MMSE only | 102 | 27 MMSE only | 97 | 90 | |
| Mattis DRS (raw/maximum score) | | | | | | | | Total score | 144/144 | | | | | 116/144 | 84/144 | Attention | 37/37 | | | | | 35/37 | 31/37 | Initiation | 37/37 | | | | | 29/37 | 14/37 | Construction | 6/6 | | | | | 5/6 | 2/6 | Conceptualization | 39/39 | | | | | 30/39 | 26/39 | Memory | 25/25 | | | | | 17/25 | 11/25 |
| WORD-LIST WMS III (raw/scaled score) | | | | | | | | 1st trial | 5/12 | | 3/7 | | | 2/6 | 2/6 | Immediate recall | 29/11 | | 22/7 | | | 13/4 | 15/4 | Delayed recall | 4/11 | | 4/11 | | | 1/8 | 0/6 | Recognition | 22/10 | | 23/11 | | | 18/7 | 15/4 |
| Verbal fluency tests (raw score) | | | | | | | | Category (animal) | 20 | | 1 | 14 | 7 | 4 | 6 | letter (N, K, P) | 45 | | 19 | 6 | 10 | 7 | 5 |
| Rey-Osterrieth CFT (raw/T score) | | | | | | | | Copy (raw) | 36 | | 33 | | 32.5 | 28 | 4.5 | Immediate recall | 21/67 | | 10/43 | | 15/57 | 12.5/52 | 1.5/25 | Delayed recall | 18.5/62 | | 13/49 | | 13.5/54 | 9/43 | failed | Recognition | 29/49 | | 20/49 | | 21/56 | 20/50 | 14/20 |
| Stroop test (raw/T score) | | | | | | | | Word | 98/45 | | | 97/45 | 103/47 | 93/43 | 56/24 | Color | 73/45 | | | 61/37 | 65/40 | 34/20 | 31/20 | Word/color | 49/54 | | | 33/38 | 39/44 | 25/30 | failed | Interference (T score) | 57 | | | 50 | 49 | 55 | — |
| Tower of London (raw/maximum score) | 33/36 | | | | | 8/36 | failed |
| MADRS | 4 | 24 | | 9 | 5 | 3 | 8 |
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*1/2006: very poor compliance—only screening; **3/2006: still poor compliance, but much better than during the previous examination in 1/2006; WAIS-R: Wechsler Adult Intelligence Scale—Revised; Mattis DRS: Mattis Dementia Rating Scale; WMS III: Wechsler Memory Scale III; Rey-Osterrieth CFT: Rey-Osterrieth Complex Figure Test; MADRS: Montgomery-Asberg Depression Rating Scale.
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