日本地方病院における消化器内視鏡部門の運用カーボンフットプリント
Operational Carbon Footprint of a Gastrointestinal Endoscopy Unit at a Regional Hospital in Japan (原題)
Shintaro Fujihara, Hideki Kobara, Atsushi Imagawa, Noriko Nishiyama, Haruo Oba, Team Green K (Green Endoscopy for Earth Neo‐Kagawa)
🤖 gxceed AI 要約
日本語
日本の150床地方公立病院の内視鏡部門で5か月間794件の検査を対象に、GHGプロトコルに基づき運用排出量を算定した初の国内報告。電力が最大排出源（38.8%）で、その69.3%を空調が占め、部門レベルで直接削減可能と示した。患者移動は35.3%と同等規模だが、これは医療アクセスの地理的要因を反映する。
English
First Japanese facility-level carbon footprint of a GI endoscopy unit, covering 794 procedures over 5 months at a 150-bed regional hospital using GHG Protocol and national emission factors. Electricity was the largest source (38.8%), 69.3% from air conditioning and directly modifiable at unit level. Patient travel (35.3%) was comparable but reflects healthcare access geography rather than endoscopic practice.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
医療機関のScope1・2排出把握はSSBJや有報での気候関連開示が病院・医療法人にも波及しつつある中で実務的価値が高い。空調由来電力という部門単位の削減レバーを示した点は、国内医療機関の脱炭素計画立案に直接資する。
In the global GX context
Adds rare facility-level, procedure-granular evidence to healthcare decarbonization literature, where system boundaries vary widely. Demonstrates a replicable GHG Protocol method for Scope 1/2 in a clinical setting, relevant to ISSB-aligned disclosure expectations spreading to healthcare providers globally.
👥 読者別の含意
🔬研究者:医療部門のカーボンフットプリント算定におけるシステム境界設定と患者移動集計の感度分析手法が参考になる。
🏢実務担当者:空調負荷と廃棄物（吸引液バッグ）が部門単位の削減優先項目であることを示す実務的ベンチマーク。
🏛政策担当者:医療機関の脱炭素政策において、施設運用（空調）と患者アクセス地理を区別して扱う必要性を示唆。
📄 Abstract（原文）
BACKGROUND AND AIM: Gastrointestinal endoscopy is resource-intensive, but no carbon footprint data have been reported from a Japanese facility, and published estimates differ widely in system boundary. We quantified the operational carbon footprint of an endoscopy unit at a Japanese regional hospital and identified which emission sources are amenable to unit-level intervention. METHODS: In this retrospective single-center study, we analyzed 794 consecutive procedures performed over 5 months at a 150-bed regional public hospital. Emissions from electricity, patient travel, medical waste, consumables, reprocessing chemicals, medical gas, and water were estimated according to the Greenhouse Gas Protocol using Japanese national emission factors and published life-cycle data. Patient travel was aggregated at the procedure level under two scenarios: procedure-day travel only (Scenario A) and visit-count-corrected travel (Scenario B). Sensitivity analyses addressed transport mode, air-conditioning load factor, and waste composition. RESULTS: e per procedure) in Scenario B. In Scenario B, electricity was the largest source (38.8%), followed by patient travel (35.3%) and medical waste (13.5%). Air conditioning accounted for 69.3% of electricity use. Waste generation was 0.80 kg per procedure, of which suction fluid bags represented 36.7%. CONCLUSIONS: Electricity, dominated by air conditioning, was the largest operational emission source and is directly modifiable by the unit. Patient travel was of comparable magnitude but reflects healthcare access geography rather than endoscopic practice.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1111/jgh.70827first seen 2026-10-19 05:02:02
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