The effect of unilateral chest drainage for transpulmonary pressure during mechanical ventilation

JA Clinical Reports

Table 1 LTVs, the RTVs, the TTVs, and the Ppls in settings 1–4

Settings	PEEP (cmH₂O)	Left chest drainage (cmH₂O)	TTV (mL) ± SD	LTV (mL) ± SD	RTV (mL) ± SD	Ppl (cmH₂O) ± SD
Setting 1	0	0	287 ± 0.9	128 ± 2.5	150 ± 0.0	19 ± 0
	0	10	305 ± 0.6	185 ± 1.5	110 ± 0.0	17 ± 0
	0	20	304 ± 0.7	81 ± 1.5	210 ± 1.5	23 ± 0
Setting 2	10	0	298 ± 1.5	142 ± 3.4	151 ± 1.5	25 ± 0
	10	10	295 ± 1.0	110 ± 1.5	176 ± 3.7	26 ± 0
	10	20	304 ± 0.9	50 ± 1.5	246 ± 2.0	29 ± 0
Setting 3	0	0	264 ± 0.5	122 ± 2.3	125 ± 0.0	19 ± 0
	0	10	272 ± 0.9	150 ± 0.0	105 ± 0.0	18 ± 0
	0	20	269 ± 0.5	83 ± 2.4	163 ± 2.4	22 ± 0
Setting 4	10	0	256 ± 0.3	125 ± 2.7	105 ± 0.0	22 ± 0
	10	10	262 ± 0.4	130 ± 0	110 ± 0.0	23 ± 0
	10	20	262 ± 0.6	52 ± 2.4	195 ± 0.0	28 ± 0

Positive end-expiratory pressure (PEEP) of the ventilator, left side chest tube drain aspiration pressure, total tidal volume (TTV), left tidal volume (LTV), right tidal volume (RTV), and plateau pressure (Ppl) for each setting are shown. PEEP and left chest tube drainage are equal to the set values; TTV, LTV, RTV, and Ppl are the mean and standard deviation of the measurements. In all settings, the target value for tidal volume was 300 mL. Pressure-controlled ventilation was used in settings 1 and 2, and volume-controlled ventilation was used in settings 3 and 4