Table 4. Hemodynamic Changes.

Group	TLVbaseline	OLV15	OLV30	TLVend
Heart rate (beats/min)
Control	67±14	71±14	69±10	69±12
PEEP	67±15	70±13	68±12	69±11
AR	68±13	70±12	72±9	68±10
MAP (mm Hg)
Control	83±13	90±12	86±11	79±11*
PEEP	89±18	90±13	87±11	81±14
AR	89±13	91±15	88±11	79±10*
CVP (mm Hg)
Control	10±4	16±3*	16±4*	11±3
PEEP	10±3	17±4*	16±4*	11±4
AR	10±3	17±3*	18±4*	12±3

MAP, mean arterial pressure; CVP, central venous pressure; TLV_baseline, 15 min into TLV; OLV₁₅ and OLV₃₀, 15 min and 30 min after OLV; TLV_end, 10 min after TLV was re-initiated; PEEP, positive end-expiratory pressure; AR, alveolar recruitment.

Values are mean±SD.

^*p<0.05 vs. TLV_baseline in each group.