Diagnosis Accuracy of Mean Arterial Pressure Variation during a Lung Recruitment Maneuver to Predict Fluid Responsiveness in Thoracic Surgery with One-Lung Ventilation

Table 4

Comparison of changes in haemodynamic parameters before () and after () the lung recruitment maneuver in responders and nonresponders.

	Group R	Group N	value
MAP	11.7 ± 3.4	6.4 ± 4.3	<0.01
HR	2.7 ± 5.0	3.2 ± 5.1	0.70
CVP	2.0 (1.0–4.5)	0.0 (0.0–1.0)	0.02
CO	1.1 (0.6–1.5)	0.7 (0.4–1.0)	0.07
CI	0.6 (0.3–1.0)	0.5 (0.3–0.7)	0.16
SVV	6.0 (2.0–9.0)	2.0 (0.0–5.0)	<0.01
SVI	9.3 ± 6.9	6.7 ± 8.0	0.133

Values are expressed as means ± SD or median values (25%–75%).
compared with group N.
Group R, responder group; group N, nonresponder group; MAP, mean arterial blood pressure; HR, heart rate; CVP, central venous pressure; CO, cardiac output; CI, cardiac index; SVV, stroke volume variation; SVI, stroke volume index.