Patient perceptions of "awake" brain tumour surgery

BACKGROUND

Awake brain tumour surgery allows intraoperative patient assessment and is done to optimise safe tumour removal. It is an established technique but little is known about patient perceptions of the procedure.

METHOD

Fifteen adult patients filled out a dedicated questionnaire to assess 10 aspects of patient perceptions of the procedure.

FINDINGS

All patients, who were awake for a median of 45 minutes (range 10-105), stated they were adequately prepared for the operation. Most recollected various aspects of the procedure, although 3 patients (20%) had little memory of actually being awake during the surgery despite being cooperative. A minority reported more than minor discomfort (20%), fear (15%) or anxiety (29%), and most felt they coped with the cortical stimulations and functional testing well. Sources of discomfort and pain were the cranial pin holding device, operative position, inadequate infiltration of the cranial wound with local anesthetic, a full bladder causing a desire to micturate and a hard and uncomfortable operating table.

CONCLUSIONS

These results, are very similar to a previous American report using a different anesthetic technique, in that most patients tolerate awake craniotomy remarkably well if the procedure is explained to them and some simple precautions are taken. Additionally between 8%-37% of patients (95% Confidence Interval, summing data from the two studies, n = 35) will have no recollection of being awake. Ways of minimising discomfort and problems of anxiety in this patient cohort are discussed.

Anxiety and depression in patients with an intracranial neoplasm before and after tumour surgery

The aims of this prospective study were to investigate levels of anxiety and depression in patients with a solitary intracranial neoplasm before and after surgery, and to determine if relationships exist between high levels of anxiety or depression and the hemispheric location of the tumour, the tumour type or patient gender. Patients aged between 17 and 79 years with a solitary intracranial neoplasm completed the Hospital Anxiety and Depression Scale (HAD) before and after biopsy or resective tumour surgery. A control group of non-brain-damaged subjects also completed the HAD before and after lumbar spinal surgery. Of the 109 patients with a brain tumour 30 and 16% demonstrated the likely presence of anxiety and depression, respectively, according to HAD scoring criteria. A greater proportion of females with a left hemisphere tumour reported higher levels of emotional disturbance than any other group of patients; relationships between dysphasia and levels of anxiety or depression were not significant. Patients with a meningioma had higher levels of anxiety and depression as measured by the HAD than those with any other tumour types. Levels of both anxiety and depression were significantly lower after tumour surgery according to the HAD. There were no significant differences in HAD scores between (a) left and right hemispheric tumour groups, and (b) the tumour and control (n = 20) groups. This study has found that anxiety and depression as measured by the HAD are relatively uncommon in patients with an intracranial neoplasm, and that levels of mood disturbance do not differ significantly from those in patients undergoing lumbar spinal surgery. Levels of anxiety and depression become lower after surgery in patients with a brain tumour. Patterns of anxiety and depression in patients with a brain tumour appear to differ from those reported in stroke.

Effects of resective surgery for left-sided intracranial tumours on language function: a prospective study

BACKGROUND

Although language disorders occur in about 50% of patients with a left hemispheric tumour and are a significant cause of morbidity, the effects of resective neurosurgery and their relation to tumour pathology are unclear. We report the immediate effects of resective surgery on language functions in a heterogeneous group of patients with left-sided intracranial tumours.

METHODS

40 patients were studied. The Western Aphasia Battery (WAB) and Boston Naming Test (BNT) were administered preoperatively and before discharge following resective neurosurgery. Dexamethasone dose at time of testing was recorded, as was time taken to complete the tests, and tumour neuropathology.

FINDINGS

15 patients with normal aphasia quotients and language quotients before resective surgery all had normal quotients postoperatively. 25 who were dysphasic (ie, aphasia quotient <93.8) preoperatively showed significant postoperative improvements in both their mean aphasia quotient (from 81.8 to 89.1, p=0.004) and their mean language quotient (from 73.4 to 85.4, p=0.001), though 13 remained dysphasic. Two of the 25 dysphasic patients had their WAB scores lowered by tumour resection. The findings and postoperative changes in BNT scores were almost identical to the pattern of those in WAB scores. At second assessment, dexamethasone therapy was significantly (p<0.01) lower than preoperative dose (reduction from mean 10.3 mg/day to 0.7 mg/day in the dysphasic group). Patients with glioblastoma were more likely to have lower aphasia quotients, language quotients, and BNT scores than patients with anaplastic glioma, metastasis, or meningioma. Although the glioblastoma group had the greatest improvements in WAB operative scores, 57% remained dysphasic after resective surgery. Two additional patients declined postoperative assessment.

INTERPRETATION

Resective surgery for left-sided intracranial tumours significantly improves language function in dysphasic patients, and is unlikely to impair language functions in non-dysphasic patients. Dysphasia and its response to resective surgery are related to the tumour neuropathology.