Table 2.

Hemodynamic variable at different phases in responders and non-responders during the study (n = 34)

Hemodynamic variable	Category	Before PLR	During PLR	Before volume expansion	After volume expansion
Heart rate (mean ± SD, beats/min)	Responder	99 ± 25	95 ± 23a	98 ± 25	93 ± 23b
	Non-responder	98 ± 24	100 ± 23	98 ± 24	97 ± 23
Mean arterial pressure (mean ± SD, mmHg)	Responder	66 ± 10	78 ± 8a	67 ± 10	77 ± 8b
	Non-responder	83 ± 13c	87 ± 13a	83 ± 12c	85 ± 12b
Central venous pressure (mean ± SD, mmHg)	Responder	8 ± 4	11 ± 5a	9 ± 4	11 ± 5b
	Non-responder	9 ± 4	11 ± 5a	9 ± 4	11 ± 4b
Cardiac output (mean ± SD, L/min)	Responder	5.5 ± 2.6	6.5 ± 2.9a	5.6 ± 2.5	6.5 ± 3.0b
	Non-responder	6.0 ± 2.3	6.1 ± 2.4	5.8 ± 2.3	6.0 ± 2.4b
Cardiac index (mean ± SD, l/min m2)	Responder	3.4 ± 1.4	4.0 ± 1.5a	3.4 ± 1.3	4.0 ± 1.6b
	Non-responder	3.4 ± 1.2	3.5 ± 1.2	3.3 ± 1.2	3.4 ± 1.3b
Stroke volume (mean ± SD, ml)	Responder	57.4 ± 22.7	69.5 ± 26.5a	58.7 ± 22.3	71.7 ± 27.1b
	Non-responder	63.8 ± 27.6	64.4 ± 28.7	62.6 ± 27.6	65.3 ± 30.4b
Stroke volume index (mean ± SD, ml/m2)	Responder	35.7 ± 14.0	43.4 ± 16.8a	36.6 ± 13.9	44.8 ± 17.0b
	Non-responder	36.4 ± 15.6	36.7 ± 16.1	35.8 ± 15.7	37.3 ± 17.3b
PtcO2 (mean ± SD, mmHg)	Responder	90 ± 37	101 ± 38a	92 ± 33	108 ± 39b
	Non-responder	117 ± 37c	116 ± 35	118 ± 37	116 ± 38
PtcCO2 (mean ± SD, mmHg)	Responder	39 ± 7	39 ± 7a	39 ± 7	39 ± 7
	Non-responder	42 ± 13	41 ± 13	41 ± 13	41 ± 12

Responders refered to patients in whom volume expansion increased stroke volume ≥10% after 250 ml of rapid saline infusion in 10 min (n = 14). The remaining patients were defined as non-responders (n = 20)

PLR, passive leg raising; PtcO₂, transcutaneous partial pressure of oxygen; PtcCO₂, transcutaneous partial pressure of carbon dioxide

^a p < 0.05 versus before PLR; ^b p < 0.05 versus before volume expansion; ^c p < 0.05 versus responders