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. 2021 Jul 27;35(12):3528–3546. doi: 10.1053/j.jvca.2021.07.027

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Fig 4 — Minimization of atmospheric contamination using antiviral filters during one-lung ventilation: (1) a filter connected to the Y-piece of the circuit, (2) a clamped connector for the nonventilated lumen of the double-lumen tube (DLT), (3) a filter connected to the end of the lumen corresponding to the ventilated lung, and (4) a filter connected to the end of the lumen corresponding to the nondependent lung. (Permission to reproduce was obtained from Professor Mert Senturk, Istanbul University, Turkey).