Using clinical parameters to guide fluid therapy in high-risk thoracic surgery. A retrospective, observational study

Table 1 Basic characteristics

	Before group (n = 18)		After group (n = 12)		p value
Age (years) ^a	62 (47; 68)		58 (43; 67)		0.19
Gender ^c					1.00
Female	5 (28)		3 (25)
Male	13 (72)		9 (75)
Weight (kg) ^b	82 (74; 89)		83 (72; 94)		0.83
Height (cm) ^b	176 (172; 180)		178 (172; 184)		0.48
BMI > 30 ^c	2 (11)		2 (17)		1.0
Smoking status ^c					1.0
Current	4 (22)		2 (17)
Former	7 (39)		5 (41)
Never	6 (33)		5 (42)
Data missing	1 (6)		0
ASA-classification ^c					1.0
ASA I	1 (6)		0
ASA II	12 (67)		8 (67)
ASA III	5 (28)		4 (33)
Comorbidity ^c
COPD	0		0
Hypertension	4 (22)		3 (25)
IHD	1 (6)		0
DM	1 (6)		2 (17)
Resection side^c					0.71
Right	8 (44)		7 (58)
Left	10 (56)		5 (42)
TNM-classification^c	Pre-operative	Postoperative	Pre-operative	Postoperative
T1N0M0	2 (6)	0	0	0
T2N0M0	12 (67)	3 (17)	9 (75)	1 (8)
T3N0M0	4 (22)	12 (67)	1 (8)	3 (25)
T3N1M0	0	0	0	2 (17)
T3N2M0	0	1 (6)	1 (8)	5 (42)
T4N0M0	0	1 (6)	1 (8)	1 (8)
T4N1M0	0	1 (6)	0	0
Preoperative FEV1^b (% of expected)	87 [80; 94]		77 [68; 85]		0.07
Preoperative DLCO^b (% of expected)	71 [66; 76]		71 [63; 78]		0.93

ASA American Society of Anesthesiologists; BMI Body Mass Index; cm centimetres; COPD Chronic Obstructive Pulmonary Disease; DLCO Diffusing Capacity for Carbon Monoxide; DM Diabetes Mellitus; FEV1 Forced Expiratory Volume in one second; IHD Ischemic Heart Disease; kg kilograms; TNM Tumour, Node, Metastasis International Staging System for Lung Cancer
^aMedian (range), ^bMean (95 % confidence interval), ^cNumber of patients (group percentage)

ISSN: 1471-2253