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胃切除後骨代謝障害は自覚症状に乏しく,発症した場合著しくQOLを障害する合併症である。しかしながら実臨床における認知度は高くないのが実情である。胃手術の骨代謝に対する影響を,臨床症例の調査とラット手術モデルを用いた実験から検討した。胃切除症例の約30%に骨代謝障害が認められ,残胃温存症例や食物通過経路温存症例で骨密度は比較的高かった。ラット手術モデルでも同様の結果が得られ,胃切除量と再建経路の両因子が術後骨代謝障害に影響することが推察された。
Bone metabolic disorder after gastrectomy is a silent complication, and has potential of severely disturbing quality of life. However, the awareness of this complication is not enough in clinicians. We examined the influence of gastrectomy on bone metabolism using the investigation of clinical cases and experiments with rat surgical models. We discussed the influence of the volume of resected stomach and the reconstructed route of food passage. Bone metabolic disorders were observed in 30% of patients after gastrectomy. They were milder in cases after proximal gastrectomy compared with total gastrectomy(p=0.110), and segmental/local gastrectomy compared with distal gastrectomy(p=0.080), in cases with physiological route of foods passing compared with non- physiological route(p=0.091). Similar results were observed in the experiments with rat surgical models. Both of the volume of the remnant stomach and the reconstructed food passing route are correlated with bone metabolic disorders after gastrectomy.