Role of balloon enteroscopy for obscure gastrointestinal bleeding in those with surgically altered anatomy: A systematic review

Table 1 Overview of literature on balloon enteroscopy for obscure gastrointestinal bleeding in those with altered anatomy

Cases (n-patients)	Anatomy	Device	Study type	Yield	Complications	Ref.
17 (12)	8 GBR, 6 PSW, 2 OLTR, 1 GJR	DBE	Retrospective	15/17 diagnostic; 14/17 therapeutic	1/17 perforation	[7]
3 (3)	Not specified	TTS-BAE	Retrospective	1/3 diagnostic; 1/3 therapeutic	None	[8]
3 (3)	1 OLTR, 1 Ileal-sigmoid anastomosis, 1 right hemicolectomy with ileostomy	DBE	Retrospective	3/3 diagnostic; 0/3 therapeutic	3/3 perforation	[9]
15 (15)	Not specified	SBE	Retrospective	8/15 diagnostic; 5/15 therapeutic	None	[10]
3 (1)	Most OLTR	DBE	Retrospective	3/3 diagnostic; 1/3 therapeutic	None	[11]
5 (5)	Not specified	DBE	Retrospective	5/5 diagnostic; 5/5 therapeutic	None	[12]
9 (9)	Not specified	DBE	Prospective	Does not specify	1/9 perforation	[13]
3 (3)	3 GBR	DBE	Prospective	3/3 diagnostic; 3/3 therapeutic	None	[14]
5 (5)	2 HJ, 1 PSW, 1 GBR, 1 right hemihepatectomy w/RYHJ	3 DBE 2 SBE	Case Series	5/5 diagnostic; 5/5 therapeutic	None	[15]
1 (1)	OLTR	SBE	Case Report	1/1 diagnostic; 1/1 therapeutic	None	[16]
1 (1)	HJ	SBE	Case Report	1/1 diagnostic; 1/1 therapeutic	None	[17]
1 (1)	Whipple	DBE	Case Report	1/1 diagnostic; 1/1 therapeutic	None	[18]
1 (1)	GBR	SBE	Case Report	1/1 diagnostic; 1/1 therapeutic	None	[19]
1 (1)	OLT	SBE	Case Report	1/1 diagnostic; 1/1 therapeutic	None	[20]

TTS-BAE: Through the scope balloon assisted enteroscopy; GBR:Gastric bypass Roux-en-Y; PSW: Pylorus sparing Whipple; OLTR: Orthotopic Liver Transplantation with Roux-en-Y; OLT: Orthotopic Liver Transplantation; GJR: Gastrojejunostomy Roux-en-Y; HJ: Hepaticojejunostomy; RYHJ: Roux-en-Y hepaticojejunostomy.