Perioperative goal-directed hemodynamic therapy based on radial arterial pulse pressure variation and continuous cardiac index trending reduces postoperative complications after major abdominal surgery: a multi-center, prospective, randomized study

Table 1 Demographic data

	Control group (n = 81)	Study group (n = 79)	P- value
Age^a (years)	65 (18.25)	63 (17)	0.765
Male: female	50: 31	47: 32	0.899
Height^b (m)	171.7 ± 9.4	170 ± 9.2	0.241
ABW^b (kg)	79.2 ± 18.1	77.4 ± 20.4	0.557
PBW^b (kg)	66.0 ± 10.1	64.3 ± 10.1	0.269
ASA III	33	33	0.978
POSSUM physiological^a	17 (7)	16 (5)	0.921
POSSUM operative^a	17 (9)	15 (8.75)	0.067
Type of surgery (number of patients)
Bowel	41	47	0.332
Non-bowel	40	32	0.332
Duration of surgery (minutes)	237.5 ± 109.8	221.9 ± 86.4	0.321

Data are median (IQR)^a or mean ± SD^b. Data were compared using Student’s t-test, Mann–Whitney U-test, χ²-test or Fisher’s exact test as appropriate to detect potential preoperative differences between the two groups. ABW, actual body weight; ASA, physical status classification system by the American Society of Anesthesiologists; PBW, predicted body weight: PBW_male = 45.5 + 0.91*(height(cm)-152.4), PBW_female = 50 + 0.91*(height(cm)-152.4); POSSUM, Physiological and Operative Severity Score for the Enumeration of Mortality and Morbidity.

ISSN: 1364-8535