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The effect of Roux limb lengths on outcome after Roux-en-Y gastric bypass: a prospective, randomized clinical trial.
Obes Surg. 2002 Aug; 12(4):540-5.OS

Abstract

BACKGROUND

The effect of limb-length on weight loss after Roux-en-Y gastric bypass (RYGBP) is controversial; hence, the optimal limb-lengths have not been determined. This study evaluated the effect of different limb-lengths on weight loss after RYGBP.

METHODS

The study was a prospective randomized clinical trial in which patients undergoing RYGBP (110 F, 24 M; mean age 39.7) were randomized as follows: BMI < or = 50 (N = 69): A-75 cm (N = 35) vs B-150 cm alimentary limb (N = 34) and C-150 cm (N = 33) vs D-250 cm alimentary limb (N = 31). All other aspects of the operation were identical. Patients were followed at 2 weeks, 6 weeks, 6 months, 12 months, 18 months, 24 months and yearly thereafter.

RESULTS

There were no significant differences in age, sex, race, initial BMI, or excess weight between patients assigned to groups A vs B and C vs D. Postoperative nutritional intake was also similar between groups. Within each weight category, there were no differences in mean weight loss, change in BMI, and % excess weight lost (EWL) over time. When the number of patients achieving 50% EWL was evaluated, there was no difference between groups with a BMI < or = 50 kg/m2; however, among patients with a BMI > 50 kg/m2, a significantly greater percentage of those having a 250-cm limb achieved > 50% EWL at 18 months postoperatively. This difference was lost at 24 and 36 months, possibly due to the small sample size.

CONCLUSIONS

In patients with a BMI < or = 50, there appears to be no advantage to longer limb-lengths. In patients with BMI > 50, however, these data suggest that longer alimentary limb-lengths may be associated with a higher percent of patients achieving > 50% EWL. Longer follow-up studies of the effects of limb-length on success of RYGBP are indicated.

Authors+Show Affiliations

Bariatric Treatment Center of Ohio, Ohio State University, Columbus, OH, USA.No affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

12194548

Citation

Choban, Patricia S., and Louis Flancbaum. "The Effect of Roux Limb Lengths On Outcome After Roux-en-Y Gastric Bypass: a Prospective, Randomized Clinical Trial." Obesity Surgery, vol. 12, no. 4, 2002, pp. 540-5.
Choban PS, Flancbaum L. The effect of Roux limb lengths on outcome after Roux-en-Y gastric bypass: a prospective, randomized clinical trial. Obes Surg. 2002;12(4):540-5.
Choban, P. S., & Flancbaum, L. (2002). The effect of Roux limb lengths on outcome after Roux-en-Y gastric bypass: a prospective, randomized clinical trial. Obesity Surgery, 12(4), 540-5.
Choban PS, Flancbaum L. The Effect of Roux Limb Lengths On Outcome After Roux-en-Y Gastric Bypass: a Prospective, Randomized Clinical Trial. Obes Surg. 2002;12(4):540-5. PubMed PMID: 12194548.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effect of Roux limb lengths on outcome after Roux-en-Y gastric bypass: a prospective, randomized clinical trial. AU - Choban,Patricia S, AU - Flancbaum,Louis, PY - 2002/8/27/pubmed PY - 2003/1/15/medline PY - 2002/8/27/entrez SP - 540 EP - 5 JF - Obesity surgery JO - Obes Surg VL - 12 IS - 4 N2 - BACKGROUND: The effect of limb-length on weight loss after Roux-en-Y gastric bypass (RYGBP) is controversial; hence, the optimal limb-lengths have not been determined. This study evaluated the effect of different limb-lengths on weight loss after RYGBP. METHODS: The study was a prospective randomized clinical trial in which patients undergoing RYGBP (110 F, 24 M; mean age 39.7) were randomized as follows: BMI < or = 50 (N = 69): A-75 cm (N = 35) vs B-150 cm alimentary limb (N = 34) and C-150 cm (N = 33) vs D-250 cm alimentary limb (N = 31). All other aspects of the operation were identical. Patients were followed at 2 weeks, 6 weeks, 6 months, 12 months, 18 months, 24 months and yearly thereafter. RESULTS: There were no significant differences in age, sex, race, initial BMI, or excess weight between patients assigned to groups A vs B and C vs D. Postoperative nutritional intake was also similar between groups. Within each weight category, there were no differences in mean weight loss, change in BMI, and % excess weight lost (EWL) over time. When the number of patients achieving 50% EWL was evaluated, there was no difference between groups with a BMI < or = 50 kg/m2; however, among patients with a BMI > 50 kg/m2, a significantly greater percentage of those having a 250-cm limb achieved > 50% EWL at 18 months postoperatively. This difference was lost at 24 and 36 months, possibly due to the small sample size. CONCLUSIONS: In patients with a BMI < or = 50, there appears to be no advantage to longer limb-lengths. In patients with BMI > 50, however, these data suggest that longer alimentary limb-lengths may be associated with a higher percent of patients achieving > 50% EWL. Longer follow-up studies of the effects of limb-length on success of RYGBP are indicated. SN - 0960-8923 UR - https://www.unboundmedicine.com/medline/citation/12194548/The_effect_of_Roux_limb_lengths_on_outcome_after_Roux_en_Y_gastric_bypass:_a_prospective_randomized_clinical_trial_ L2 - https://dx.doi.org/10.1381/096089202762252316 DB - PRIME DP - Unbound Medicine ER -