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. 2016 Feb;8(Suppl 1):S55–S64. doi: 10.3978/j.issn.2072-1439.2015.11.19

Figure 2.

Figure 2

An integrated single unit based three-bottle system. The patient tubing connects the drainage unit directly to the chest tube. Any drainage from the chest flows into chamber D. The collection chamber is calibrated and has a write-on surface to allow for easy measurement and recording of the time, date, and amount of drainage. Chamber F is responsible for measuring the negative pressure within the pleural cavity.