見えざる排出：膝関節鏡手術のカーボンフットプリント
Unseen Emissions: The Carbon Footprint of Knee Arthroscopy (原題)
Shannon Tse, Frank Sierra, Preston Lee, Kangwen Guo, Lydia J. McKeithan, Robin Aldwinckle, Cassandra Alda Lee, Zachary Christopher Lum
🤖 gxceed AI 要約
日本語
米国の外来手術センターで膝関節鏡下部分半月板切除術10例の炭素排出量を前向きに算定した研究。1例あたり平均34.9kgCO2eで、最大の排出源は術中廃棄物（71.6%）だった。年間50万件超の実施を踏まえると約17,452トンCO2に相当し、廃棄物削減や再利用器具、麻酔管理の最適化が有効な緩和策と結論づける。
English
This study quantified the carbon footprint of knee arthroscopy across 10 outpatient cases, finding a mean of 34.9 kgCO2e per procedure. Procedural waste dominated at 71.6% of emissions, followed by anesthesia, HVAC, equipment, lighting, and sterilization. Scaled to 500,000+ annual US procedures, this equals ~17,452 tCO2, pointing to waste reduction, reusable instruments, and anesthetic stewardship as key mitigation levers.
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Scope 3排出（廃棄物・調達）算定はSSBJ開示や病院の脱炭素計画で重要性が増しており、高頻度処置の排出原単位データとして日本国内の医療機関の算定に応用可能。
In the global GX context
Adds granular Scope 3 (waste, procurement) emissions data for the healthcare sector, a category increasingly scrutinized under CSRD and ISSB disclosure as hospitals and health systems set net-zero targets.
👥 読者別の含意
🔬研究者:医療分野のScope 3算定手法と排出ホットスポット特定の実証例として参照できる。
🏢実務担当者:病院・手術部門の脱炭素計画で廃棄物分別や再利用器具導入の優先順位づけに活用できる。
🏛政策担当者:医療セクターの排出削減政策や廃棄物規制の設計に排出原単位データを提供する。
📄 Abstract（原文）
Background: The United States health care sector contributes 8.5% to 10% of the nation's carbon emissions. Reducing the carbon footprint of resource-intensive environments such as operating rooms (ORs) is essential for lowering carbon emissions in health care. Arthroscopic partial meniscectomy (APM) is one of the most performed orthopaedic procedures in the United States. Purpose: To quantify the carbon dioxide–equivalent emissions associated with a standard knee arthroscopy procedure. Study Design: Case series; Level of evidence, 4. Methods: The carbon footprint, measured in kilograms of carbon dioxide equivalent (kgCO 2 e), was used to estimate the environmental impact. Data were prospectively collected from 10 isolated APM cases performed at an outpatient ambulatory surgery center. The carbon footprint was calculated based on a mean surgery time of 73.4 minutes in an OR measuring 528 sq ft. The calculation of OR energy usage accounted for lighting, HVAC (heating, ventilation, and air conditioning) systems, anesthesia gases and equipment, arthroscopy equipment, and sterilization (assuming 1.5 hours of processing time and 3 specialty trays per case). Waste per case was weighed and averaged. Standard conversions outlined by the US Environmental Protection Agency were used: 0.238 kgCO 2 e per kilowatt-hour (kWh) and 3.5 kgCO 2 e per 1 kg of US landfill waste. Results: The carbon footprint, on average, of 1 APM procedure was 34.9 kgCO 2 e. The largest contributor, accounting for 71.6% (25.0 kgCO 2 e) of the carbon footprint, was waste generated during the procedure, followed by anesthesia, HVAC, arthroscopy tower, lighting, and sterilization. With over 500,000 APM procedures performed annually in the US, this amounts to 17,452 metric tons of CO 2 emissions, equivalent to the annual electricity use of 3637 homes. Conclusion: A standard APM procedure generates a substantial carbon footprint, predominantly from procedural waste. Prioritizing material reduction through lean draping protocols, optimizing waste segregation, transitioning to reusable instruments, and anesthetic stewardship, such as adopting total intravenous anesthesia protocols, represent the most critical and direct strategies for mitigating the environmental impact of this high-volume procedure.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1177/23259671261488224first seen 2026-11-08 05:05:26 · last seen 2026-11-13 05:17:36
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