RT Journal Article SR Electronic T1 The Green Surgical Block 4.0: Automation of the operating theatre's climate conditions through a real-time patient-flow solution JF Future Healthcare Journal JO Future Healthc J FD Royal College of Physicians SP 46 OP 49 DO 10.7861/fhj.2022-0142 VO 10 IS 1 A1 Jordi Rovira-Simon A1 Marc Sales-i-Coll A1 Patricia Pozo-Rosich A1 Juan Antonio Hueto-Madrid A1 Raquel Cánovas Paradell A1 Anna Ochoa de Echagüen Aguilar A1 Marta Carbonell-Cobo A1 Rodolfo de Castro A1 Genevieve Shaw YR 2023 UL http://www.rcpjournals.org/content/10/1/46.abstract AB The energy consumed by surgery units constitutes a staggering part of the overall healthcare carbon footprint. Partly due to the demanding climate conditions necessitated by operating theatres (OTs), energy is also wasted because of poorly managed heating, ventilation and air-conditioning systems (HVACs) that consume up to 57% of the total energy used in a hospital. With their goal of optimising OTs' performance and reducing patient waiting lists, heads of surgery units worldwide do not dare to risk cancelling scheduled surgery because of problems with the OT environment conditions (ie temperature, humidity, pressure). Current solutions are monolithic, complex and completely disconnected from healthcare logic, failing to take into account the idiosyncrasy of hospitals. This article presents an innovation that uses real-time patient flow data to automate and optimise the OT's climate conditions.