Influence of the actual diameter of the gastric pouch outlet in weight loss after silicon ring Roux-en-Y gastric bypass: an endoscopic study.
Some sort of restriction of the pouch emptying is supported by many surgeons to allow a sustained weight loss through the use of a ring placed circumferentially around the gastric pouch. Most previous studies focused on the length of the ring, not the actual diameter of the gastric pouch outlet. This study aims to evaluate the association between the actual diameter of the gastric pouch outlet and the weight loss in obese patients submitted to silicon ring Roux-en-Y gastric bypass. We studied prospectively 257 patients that underwent silicon ring (65 mm) Roux-en-Y gastric bypass between July 2005 and August 2007. Upper digestive endoscopy was performed to measure the diameter of the gastric pouch outlet at 1 and 2 years with the aid of calibrated balloons. The diameter of the gastric pouch outlet ranged from 9 to 14 mm (mean = 11 mm). Excess weight loss ranged from 37% to 127% (mean = 69%) during the first year and 29% to 110% (mean = 69%) during the second year. A negative correlation between the diameter of the gastric pouch outlet and excess weight loss at first year (r = -0.792, p < 0.001) and at the second year of follow-up (r = -0.921, p < 0.001) was found. The actual diameter of the gastric pouch outlet was associated with weight loss after silicon ring Roux-en-Y gastric bypass during the 2-year follow-up.
Mali
Jorge
J
Department of Surgery, State University of Londrina, 1302 Santos St, 86020-041, Londrina, Parana, Brazil.
Fernandes
Fernando Augusto Mardiros Herbella
FA
Valezi
Antonio Carlos
AC
Matsuo
Tiemi
T
Menezes
Mariano de Almeida
Mde A
D000293:Adolescent; D000328:Adult; D000368:Aged; D015992:Body Mass Index; D005260:Female; D015390:Gastric Bypass / Q000295:instrumentation / Q000379:methods*; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000601:surgery*; D012825:Silicon; D013270:Stomach / Q000473:pathology*; D015431:Weight Loss; D055815:Young Adult
D012825:Silicon
Am J Gastroenterol. 1982 Jul;77(7):464-6
7091134
Obes Surg. 1997 Dec;7(6):495-9
9730507
Obes Surg. 1997 Dec;7(6):489-94
9730506
J Natl Med Assoc. 1994 Feb;86(2):125-8
8169987
Obes Surg. 1991 Dec;1(4):389-395
10775940
Obes Surg. 1994 Nov;4(4):353-357
10742801
Obes Surg. 2005 Feb;15(2):155-63
15802056
Obes Surg. 2005 Nov-Dec;15(10):1403-7
16354519
Obes Surg. 1997 Apr;7(2):149-56; discussion 157
9730543
Am J Surg. 1996 Jan;171(1):74-9
8554155
Obes Surg. 2009 May;19(5):650-4
19263180
Obes Surg. 2007 Oct;17(10):1287-91
18098397
Ann Surg. 1981 Mar;193(3):334-40
7212793
Obes Surg. 2005 Nov-Dec;15(10):1408-17
16354520
Obes Surg. 2002 Apr;12(2):261-4
11975225
World J Surg. 1998 Sep;22(9):919-24
9717417
Am J Surg. 1980 Dec;140(6):751-4
7457696
Obes Surg. 2005 Jan;15(1):114-21
15760509
Obes Surg. 1998 Jun;8(3):283-8
9678195
Obes Surg. 2000 Dec;10(6):509-13
11175957
World J Surg. 1998 Sep;22(9):925-35
9717418
Obes Surg. 1997 Jun;7(3):198-202
9730548
Obes Surg. 2003 Apr;13(2):269-74
12740137
Obes Surg. 2001 Dec;11(6):699-707
11775567
Obes Surg. 2006 Oct;16(10):1298-303
17059737