Comparison of robot-assisted retroperitoneal laparoscopic adrenalectomy versus retroperitoneal laparoscopic adrenalectomy for large pheochromocytoma: a single-centre retrospective study

Table 2 Perioperative and prognosis data of patients in this study

Variable	RLA (n = 32)	RALA (n = 19)	p value
Intraoperative parameters
HI	18(56.2)	5(26.3)	0.038
Operating time (min)	165.0 ± 69.5	166.3 ± 54.0	0.944&
EBL (mL)	200(80,300)	100(50,200)	0.042§
Transfusion [n (%)]	7(21.9)	1(5.3)	0.238
Postoperative data
Overall morbidity [n (%)]	9(28.1)	6(31.6)	0.794
Severe morbidity [n (%)](Clavien III/IV)	2(6.25)	1(5.3)	0.6379
CVD morbidity	6(18.8)	2(10.5)	0.702
Duration of anesthetic use(days)	3.78 ± 1.601	2.95 ± 1.682	0.084 &
Time to oral food(days)	2(1.25, 3)	1(1, 2)	0.027§
Time to ambulation(days)	2(1.25, 2)	1(1, 2)	0.034§
Time to removal of drainage(days)	5(4, 5)	4(3, 5)	0.002§
Postoperative hospitalization days	6(5, 7)	5(5, 6)	0.02§
Follow-up data
Duration of follow-up	31.2(20, 41)	26.6(19, 34)
BP improvement ratio (n%)	27(90.0)	16(88.9)	0.7144

Continuous normally distributed variables were expressed as the mean ± standard deviation (SD); Continuous non-normally distributed variables were expressed as the median (interquartile range); categorical variables are expressed as the number (percentage). Independent sample t-test was used to compare the differences between the means of two continuous normally distributed variables and Mann-Whitney U test was used to compare the differences between the means of two continuous non-normal distribution variables. Chi-square test was used to compare the differences between the categorical variables
& Independent sample t-test, § Mann-Whitney U test, BP Blood pressure, CVD Cardiovascular disease, EBL Estimated blood loss, HI Hemodynamic instability, RLA Retroperitoneal laparoscopic adrenalectomy, RARLA Robotic assisted retroperitoneal laparoscopic adrenalectomy

ISSN: 1471-2482