Multimodal mapping and monitoring is beneficial during awake craniotomy for intra-cranial tumours: results of a dual centre retrospective study.

BACKGROUND: The combination of awake craniotomy with multimodal neurophysiological mapping and monitoring in intra-axial tumour resection is not well described, but may have theoretical benefits which we sought to investigate. METHODS: All patients undergoing awake craniotomy for tumour resection with cortical and/or subcortical stimulation together with one or more of electrocorticography (ECoG/EEG), motor or somatosensory evoked potentials were identified from the operative records of two surgeons at two centres over a 5 year period. Patient, operative and outcome data were collated. Statistical analysis was performed to evaluate factors predictive of intra-operative seizures and surgical outcomes. RESULTS: 83 patients with a median age 50 years (18-80 years) were included. 80% had gliomas (37% low grade) and 13% metastases. Cortical mapping was negative in 35% (language areas) and 24% (motor areas). Complete or near total resection was achieved in 80% with 5% severe long-term neurological deficits. Negative cortical mapping was combined with positive subcortical mapping in 42% with no significant difference in extent of resection rates to patients undergoing positive cortical mapping (p = 0.95). Awake mapping could not be completed in 14%, but with no compromise to extent of resection (p = 0.55) or complication rates (p = 0.09). Intraoperative seizures occurred in 11% and were significantly associated with intra-operative EEG spikes (p = 0.003). CONCLUSIONS: Awake multi-modal monitoring is a safe and well tolerated technique. It provides preservation of extent of resection and clinical outcomes in cases of aborted awake craniotomy. Negative cortical mapping in combination with positive subcortical mapping was also shown to be safe, although not hitherto well described. Electrocorticography further enables the differentiation of seizure activity from true positive mapping, and the successful treatment of spikes prior to full clinical seizures occurring.

Patient experiences of awake craniotomy: An Interpretative Phenomenological Analysis.

Awake craniotomy with language mapping enables maximum resection of tumours in eloquent areas while preserving function. This study aims to understand the lived experiences of those undergoing an awake craniotomy. Six participants who underwent awake craniotomy were interviewed, and the data were analysed using Interpretative Phenomenological Analysis. Themes were identified as 'Unspeakable Fear', 'Dissociation' and 'Control and Responsibility'. Participants discussed how surgery was a threat to the sense of self. Dissociation during surgery operated as a protective mechanism, while the surgical team all had roles in maintaining this bubble of dissociation, such as being a support to the patient's emotional needs.

Health-related quality of life and psychological functioning in patients with primary malignant brain tumors: a systematic review of clinical, demographic and mental health factors.

BACKGROUND: The impact of primary malignant brain tumors on patient quality of life and psychological functioning is poorly understood, limiting the development of an evidence base for supportive interventions. We conducted a thorough systematic review and quality appraisal of the relevant literature to identify correlates of health-related quality of life (HRQoL) and psychological functioning (depression, anxiety and distress) in adults with primary malignant brain tumors. METHOD: Twenty-three articles met predefined inclusion criteria from a pool of peer-reviewed literature published between January 1984 and July 2015 (N = 2407). Methodological quality of included studies was assessed using an adapted version of the Newcastle-Ottawa Scale. RESULTS: The overall methodological quality of the literature was moderate. Factors relating consistently with HRQoL and/or psychological functioning were cognitive impairment, corticosteroid use, current or previous mental health difficulties, fatigue, functional impairment, performance status and motor impairment. CONCLUSIONS: Practitioners should remain alert to the presence of these factors as they may indicate patients at greater risk of poor HRQoL and psychological functioning. Attention should be directed towards improving patients' psychological functioning and maximizing functional independence to promote HRQoL. We outline several areas of future research with emphasis on improved methodological rigor.

Depression, anxiety and positive affect in people diagnosed with low-grade tumours: the role of illness perceptions.

OBJECTIVE: People with low-grade brain tumour experience a range of emotional, behavioural and psychosocial consequences. Using Leventhal's self-regulation model to explore biopsychosocial factors associated with distress, we examine the relationships between illness perceptions, coping and depression, anxiety and positive affect. METHODS: A cross-sectional, self-report study in which 74 people (54% women) diagnosed with a low-grade brain tumour completed the Illness Perceptions Questionnaire-Revised was conducted. Mean time since diagnosis was 27.69 months (SD = 19.79). Mean age was 38.30 years (SD = 10.67). The Illness Perceptions Questionnaire-Revised, in addition to clinical, demographic and coping variables previously associated with psychological distress, was used to predict three psychological outcomes: depression, anxiety and positive affect. RESULTS: Hierarchical multiple regression analyses demonstrated that a biopsychosocial causal attribution was a significant predictor of anxiety and depression. Illness identity also emerged as a significant predictor of depression scores. Coping through self-blame was the only coping variable to emerge as a significant predictor of anxiety scores. A combination of coping through venting, acceptance, positive reframing, denial, behavioural disengagement and self-blame contributed to the variance in all three psychological outcome scores. No illness perception variables significantly predicted positive affect. CONCLUSIONS: Illness perceptions play a significant role in emotional distress experienced by people with low-grade brain tumours. Illness perceptions did not play a significant role in positive affect. Coping variables were shown to significantly contribute to the scores on all three psychological outcomes. Results suggest interventions targeted at modifying illness perceptions and enhancing problem-focused coping strategies may reduce psychological distress.