Ureteroscopic holmium laser to transect the greater omentum to remove an abdominal drain: Four case reports

Table 1 General characteristics of the four patients

Variable	Patients 1	Patients 2	Patients 3	Patients 4	Mean value
Age (yr)	73	60	62	55	62.5
Gender	Female	Male	Male	Female	—
Operation method	RR	RC	ATR	RC	—
Operation time (h)	4	6	1.8	4.9	4.2
Drain position	Left pelvic cavity	Left pelvic cavity	Left abdominal cavity	Right pelvic cavity	—
Drainage tube type	24-F rubber tube	24-F silicone tube	24-F silicone tube	24-F silicone tube	24-F
Number of side holes of the drainage tube	7	8	6	7	7.0
Diameter of side holes of drainage tube (mm)	8.0	8.0	8.0	8.0	8.0
Preoperative mean serum albumin (g/L)	37.9 (37.0-39.2)	36.1 (35.2-37.7)	45.5 (43.9-47.5)	40.8 (39.7-41.9)	40.1
Postoperative mean serum albumin (g/L)	30.9 (25.5-37.3)	30.9 (24.7-35.6)	33.6 (28.2-39.5)	32.5 (25.8-37.8)	32.0
Postoperative mean drain volume (mL/ d)	360 (110-1300)	420 (125-950)	150 (40-460)	285 (75-1100)	303.8
The celiac test of the drainage fluid	Positive	Negative	Positive	Negative	—
Creatinine value of drainage fluid (mmol/L)	56.3	73.2	—	62.6	64.0
Drainage culture of bacteria	Negative	Negative	MRSA	Negative	—
Adjustment times of drainage tube position	2	1	0	1	1
Drain indwelling time (d)	19	63	13	27	30.5

RR: Laparoscopic radical rectectomy; RC: Laparoscopic radical cystectomy; ATR: Laparoscopic left adrenal tumor resection; MRSA: Methicillin-resistant Staphylococcus aureus.