Abstract
INTRODUCTION
Aims of awake surgery are considered as maximum resection and functional preservation for postoperative quality of life (QOL). However, any studies have not been focused on the fundamental hypothesis that preservation of brain functions contributes to patient’s QOL. In this study, we investigated postoperative QOL and its related factors to reveal contribution of awake surgery for maintaining QOL.
METHODS
A total of 63 patients who underwent awake surgery were studied. Several kinds of neuropsychological/neurological tests and SF-36 to assess QOL were performed at 6-month postoperatively. In SF-36, 3-component scores, including physical, mental, and role/social component were calculated and they were compared with healthy volunteers. Additionally, their background factors were collected from medical records. Then, influenced background and functional factors to QOL were analyzed using multiple regression analysis. Moreover, voxel-based lesion symptom (VLSM) analyses were performed to investigate relationship between resected regions and QOL.
RESULTS
Though physical and mental QOL scores were almost equivalent to healthy volunteers, role and social component score (RCS) were significantly declined (36.7, < .0001). Using multiple regression analysis, RCS significantly related to reinstatement among several background factors (p=0.0038). Until postoperative 6 months, 71.6% returned to professional work. Moreover, RCS correlated significantly with working memory, language, and motor function among several brain functions (p=0.019, 0.0028, 0.010, respectively). In the VLSM analysis, patients who resected following regions showed significantly low RCS; the left inferior frontal and superior to middle temporal gyri which relate to language; and right supplementary motor area and cingulate cortex which are involved in motor control or working memory.
CONCLUSIONS
The important factors to maintain QOL are reinstatement and preserving brain functions including language, motor, and working memory. This suggests that awake surgery aiming for preserving these functions is a benefit for postoperative QOL.
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