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. 2021 Jul 6;11(7):e042857. doi: 10.1136/bmjopen-2020-042857

Figure 1.

Figure 1

Timeline of measurements of BChE and AChE: blood samples were taken 1 day preoperative (D O), shortly before anaesthetic induction (D 1), on admission to ICU (POD 0), 1 day after surgery (POD 1) and 2 days after surgery (POD 2). If the measuremnets could not be conducted immediatley, the samples have been cooled in a refrigerator and the measurement was performed up to 2 hours later. AChE, acetylcholinesterase; BChE, butyrylcholinesterase; ICU, intensive care unit, POD, Postoperative Day.