Table 4.

Complications

Authors	N	FU	Complication										Total	Intervention									Total
			Death	Perioperative complications	Surgical site infection	Late complications	Hiatal hernia	Band-specific	Gastrointestinal complaints	Nutritional deficiency / dehydration	DVT	Pulmonary system (pneumonia, pulmonary embolism)		Conversion to malabsorptive anatomy	Band, removal	Band replacement/repositioning	Band, port revision	Gastrointestinal obstruction	Leak/fistula repair	Cholecystectomy	Abdominal hernia repair	EGD
LAGB
Perigastric
Abu-Abeid et al.	11	6–36 months	*	0	*	0	*	0	0	*	*	*	0	*	*	*	*	*	*	*	*	*	0
Angrisani et al.	58	0–7 years	0	1	*	*	*	6	*	*	*	*	7	3	5	3	*	*	*	*	*	*	11
Holterman et al.	20	15–42 months	*	*	*	*	1	4	*	*	*	*	5	*	*	1	3	*	*	*	1	*	5
Pars flaccida
Alqahtani	50	NR–5 years	*	0	*	*	*	2	9	1	*	*	12	*	2	*	*	*	*	*	0	*	2
Fielding et al.	41	1–70 months	0	0	*	*	*	2	*	*	*	*	2	*	*	1	1	*	*	*	*	*	2
Lee et al.	23	1–24 months	*	*	*	*	*	2	*	*	*	*	2	*	1	1	*	*	*	*	*	*	2
Nadler et al.	73	12–24 months	0	*	1	1	3	7	5	*	*	*	17	*	2	5	1	*	*	1	3	*	12
O’Brien et al.	24	24 months	*	0	*	*	*	8	1	*	*	*	9	*	*	6	2	*	*	1	*	*	9
Silberhumer et al.	50	63–138 months	*	*	*	*	*	6	*	*	*	*	6	8	*	2	2	*	*	*	*	*	12
Silva et al.	14	12–36 months	0	0	*	*	*	2	2	*	*	*	4	*	*	*	2	*	*	1	*	*	3
Yitzhak et al.	60	25–65 months	0	0	*	*	*	10	*	*	*	*	10	*	2	6	2	*	*	*	*	*	10
Zitsman et al.	100	12 months	0	1	*	1	1	6	*	*	*	*	9	*	*	3	3	2	*	*	1	*	9
Inge et al.	14	30 days	0†	1	0†	0†	*†	*†	1†	*†	0†	1†	3†	*	*	*	*	0	*	*	0	*	0†
TOTAL	538		0 % (0/346)	0.8 % (3/372)	1.4 % (1/73)	1.1 % (2/184)	2.6 % (5/193)	10.5 % (55/524)	9.9 % (17/172)	2 % (1/50)	*	*	83	11	12	28	16	2	0	3	5	0	14.7 % (77/524)
Short-term perioperative outcome
Varela et al.	90	30 days	0	*	*	*	*	*	*	*	*	*	0	*	*	*	*	*	*	*	*	*	0
RYGB
De la Cruz-Munoz et al.	71	9–1 months	*	0	*	*	*	*	2	*	*	*	2	*	*	*	*	*	*	*	*	*	0
Inge et al.	10	1 month–2 years	*	1	*	3	*	*	1	1	1	*	7	*	*	*	*	*	1	*	*	1	2
Lee et al.	32	1–24 months	*	*	*	1	*	*	*	1	*	*	2	*	*	*	*	*	1	*	*	*	1
Miyano et al.	77	90 days	0	2	2	24	*	*	*	5	1	0	34	*	*	*	*	4	4	*	2	13	23
Nijhawan et al.	20	60–120 months	0	0	1	3	*	*	*	*	*	1	5	*	*	*	*	2	0	*	*	1	3
Olbers et al.	81	24 months	0	2	*	6	*	*	11	*	*	*	19	*	*	*	*	5	0	5	2	*	12
Strauss et al.	10	8–156 months	*	0	*	2	*	*	2	1	*	*	5	*	*	*	*	1	*	2	1	*	4
Sugerman et al.	33	1–14 years	2	*	5	14	*	*	*	1	*	1	22	2	*	*	*	1	*	*	6	3	12
Inge et al.	161	30 days	0†	17	3†	9†	*†	*†	*†	*†	1†	2†	17†	*	*	*	*	3	4	*	*	3	10†
TOTAL	495		0.9 % (2/211)	5.1 % (22/430)	6.2 % (8/130)	20.2 % (53/263)	*	*	9.3 % (16/172)	5.6 % (9/162)	2.3 % (2/87)	1.5 % (2/130)	96	2	0	0	0	13	6	7	11	18	17.1 % (57/334)
Short-term perioperative outcome
Varela et al.	191	30 days	0	*	*	*	*	*	*	*	*	*	4.3–7.6 %	*	*	*	*	*	*	*	*	*	0
LSG
Aldaqal et al.	32	12 months	*	0	*	*	*	*	*	*	*	*	0	*	*	*	*	*	*	*	*	*	0
Alqahtani et al.	99	6–24 months	0	0	2	1	*	*	3	*	*	*	6	*	*	*	*	*	*	*	*	*	0
Boza et al.	51	6–24 months	0	0	*	1	*	*	*	*	*	*	1	*	*	*	*	*	1	*	*	1	2
Nadler et al.	23	9–15 months	*	0	*	0	*	*	3	*	*	*	3	*	*	*	*	*	*	*	*	*	0
Inge et al.	67	30 days	0†	2	2†	3†	*†	*†	2†	1†	0†	1†	11†	*	*	*	*	0	2	*	0	*	2†
TOTAL	272		0 % (0/150)	0.7 % (2/272)	2.0 % (2/99)	1.2 % (2/173)	*	*	4.9 % (6/122)	*	*	*	10	0	0	0	0	0	1	0	0	1	1.0 % (2/205)
Short-term perioperative outcome
Varela et al.	28	30 days	0	*	*	*	*	*	*	*	*	*	0	*	*	*	*	*	*	*	*	*	0

Complications: death (all cause), perioperative (conversion, bleeding, or organ laceration), surgical site infection, late complications (obstruction, abscess, internal hernia, leak, or incisional hernia), hiatal hernia, band-specific (port revision, slippage, dilated pouch, and band migration), gastrointestinal complaints (nausea, vomiting, intestinal blood loss, diarrhea, GERD, gallstones, and dumping), nutritional deficiency/dehydration, DVT, and pneumonia/pulmonary embolus

“*”not reported, “†” not summarized due to short follow-up