• Masahito Katsuki, Yasuhiro Suzuki, Keiko Kunitoki, Yoshimichi Sato, Keisuke Sasaki, Shoji Mashiyama, Ryo Matsuoka, Elissa Allen, Hibiki Saimaru, Ryota Sugawara, Akinori Hotta, and Teiji Tominaga.
• Department of Neurosurgery, Iwaki City Medical Center, Mimayamachi, Uchigo, Iwaki, Fukushima, Japan; Department of Neurosurgery, Tohoku University Graduate School of Medicine, Aobaku, Sendai, Miyagi, Japan. Electronic address: ktk1122nigt@gmail.com.
• World Neurosurg. 2020 May 1; 137: e526-e534.

ObjectiveSarcopenia is defined as the loss of skeletal muscle mass and is considered an important factor for clinical outcomes in various diseases. Recent studies have shown that temporal muscle thickness (TMT) and area (TMA) can be novel indicators of sarcopenia. We examined clinical characteristics, including TMT and TMA, of patients with subarachnoid hemorrhage (SAH) treated by endovascular coiling.MethodsA retrospective analysis of 298 patients with SAH who were treated with endovascular coiling from 2009 to 2019 was conducted. Their premorbid modified Rankin Scale (mRS) score was 0-2. The association between the factors and Hunt and Kosnik (H-K) grades on admission and that between the clinical variables and mRS scores 6 months after the operation were analyzed.ResultsIn all 298 patients with SAH, Fisher group 4 and TMA <200 mm2 were independently associated with H-K grade III-V on admission in the multivariate analysis. In 254 patients with H-K grades I-III on admission, age, H-K grade III, presence of ventriculoperitoneal shunt, presence of postoperative complications, and TMA <200 mm2 were independent factors related to poor outcomes in the multivariate analysis.ConclusionsThe H-K grade on admission was independently associated with TMA. The mRS score 6 months after aneurysm treatment in patients with H-K grades I-III was also independently associated with TMA. Sarcopenia could be one of a few modifiable factors that prevent severe symptoms of SAH and improve outcomes after coiling by strengthened nutrition and physical activity.Copyright © 2020 Elsevier Inc. All rights reserved.

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